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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage Regulators - DC DC Switching RegulatorsTPS566235RJNR
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TPS566235RJNR - Texas Instruments

Manufacturer Part Number
TPS566235RJNR
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPS566235RJNR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
18,387 pcs available, New & Original
Parts Description
IC REG CTRLR
Package
13-VQFN-HR (3x2)
Data sheet
TPS566235RJNR.pdf

PCN Assembly/Origin

Assembly 28/Jun/2022.pdf
RoHs Status
ROHS3 Compliant
Our certification
In stock: 18387
  • Unit Price: $0.417
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.417 $0.42
10+ $0.342 $3.42
30+ $0.304 $9.12
100+ $0.267 $26.70
500+ $0.238 $119.00
1000+ $0.226 $226.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TPS566235RJNR Tech Specifications
Texas Instruments - TPS566235RJNR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS566235RJNR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 7V
Voltage - Input (Min) 4.5V
Voltage - Input (Max) 18V
Topology Buck
Synchronous Rectifier Yes
Supplier Device Package 13-VQFN-HR (3x2)
Series Eco-Mode™
Package / Case 13-VFQFN
Product Attribute Attribute Value
Package Tape & Reel (TR)
Output Type Adjustable
Output Configuration Positive
Operating Temperature -40°C ~ 125°C (TJ)
Number of Outputs 1
Mounting Type Surface Mount
Function Step-Down
Frequency - Switching 600kHz
Current - Output 6A
Base Product Number TPS566235

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

TPS566235RJNR Image
TPS566235RJNR (1)

Manufacturer Part Number

TPS566235RJNR

Manufacturer

Texas Instruments

Introduction

High-efficiency step-down voltage regulator from Texas Instruments' Eco-Mode™ series for power management.

Product Features and Performance

Eco-Mode™ series for enhanced power conservation

Step-Down functionality for voltage reduction

Positive output configuration

Buck topology for efficient conversion

Adjustable output for versatile applications

Single output design

Input voltage range from 4.5V to 18V

Adjustable output voltage from 0.6V to 7V

Capable of delivering up to 6A of output current

600kHz switching frequency for a good balance between efficiency and component size

Built-in synchronous rectifier for improved efficiency

Surface mount design for modern PCB layout

Product Advantages

High efficiency and low power consumption in Eco-Mode™

Wide input voltage range compatible with various power sources

Flexibility with adjustable output voltage

High current output suitable for demanding applications

Fast switching frequency allowing a smaller size of external components

Optimized for thermal performance within a -40°C to 125°C operating range

TPS566235RJNR Image
TPS566235RJNR (2)

Key Technical Parameters

Voltage - Input (Min): 4.5V

Voltage - Input (Max): 18V

Voltage - Output (Min/Fixed): 0.6V

Voltage - Output (Max): 7V

Current - Output: 6A

Frequency - Switching: 600kHz

Quality and Safety Features

Operational temperature range from -40°C to 125°C ensures reliability in various environments

Compatibility

Compatible with a variety of applications requiring an adjustable output voltage

Suitable for surface mounting on a variety of PCBs

Application Areas

Power supply for industrial systems

Consumer electronics

Telecommunications

Computing devices

Networking equipment

Product Lifecycle

Active status, not nearing discontinuation

Availability of replacements or upgrades within Texas Instruments' portfolio

Several Key Reasons to Choose This Product

Efficient power conversion reducing overall energy waste

Wide input voltage accommodating a vast array of power sources

Ability to provide a high output current for high-power applications

Adjustable output facilitating use in multiple applications

High-frequency operation minimizing the size of passive components

Synchronous rectification boosting efficiency

Robust thermal performance expanding the range of operating conditions

Reputable manufacturer with a track record for quality and reliability

Ongoing product support and availability in the market

Frequently Asked Questions(FAQ)

How does the TPS566235RJNR compare to other 6A buck regulators in terms of efficiency at light load conditions, and what impact does this have on thermal performance in compact designs?
At light loads below 100mA, the TPS566235RJNR maintains over 90% efficiency due to its Eco-Mode™ architecture with pulse-skipping modulation, which reduces switching losses significantly. This low quiescent current (typically under 30µA) minimizes power waste in standby modes, resulting in reduced heat generation compared to fixed-frequency PWM regulators that exhibit higher switching losses at light loads. For space-constrained applications where thermal dissipation is critical—such as industrial sensors or battery-powered systems—this translates to lower junction temperatures under intermittent operation, allowing use of smaller heatsinks or even passive cooling solutions.
What are the key design considerations when selecting input capacitance for the TPS566235RJNR in automotive environments, and how do ceramic capacitor values affect stability across temperature?
In automotive applications requiring compliance with ISO 16750-2 surge and transient tests, input capacitance must provide sufficient bulk energy storage while maintaining stability. A minimum of 10µF X7R or X8R ceramic capacitors should be placed close to the VIN pin, supplemented with a low-ESR electrolytic or polymer capacitor for high-current transients. The TPS566235RJNR's 600kHz switching frequency allows smaller capacitance values than lower-frequency designs, but output voltage ripple increases inversely with capacitance. At -40°C, X7R capacitors retain approximately 60% of their room-temperature capacitance, so derating to 1.5× the nominal value ensures adequate input filtering across the full operating range.
Can the TPS566235RJNR be used in parallel configurations to achieve higher current delivery, and what challenges arise from mismatched phase control?
Parallel operation of TPS566235RJNR devices is not recommended without external current-sharing circuitry due to lack of built-in master-slave synchronization. Without coordinated phase shifting, circulating currents can develop between regulators during startup or load transitions, especially if output voltages differ by more than ±10mV. Even with identical components, manufacturing tolerances in feedback resistors and internal comparators may cause unequal current distribution. Implementing external OR-ing diodes or active current balancing ICs adds complexity and defeats the purpose of using an integrated 6A regulator. Instead, designers typically select discrete multi-phase controllers or higher-current monolithic regulators for parallel applications.
How does the adjustable output voltage range of the TPS566235RJNR influence system-level noise sensitivity, particularly in precision analog subsystems powered from the same rail?
With an adjustable output from 0.6V to 7V, the TPS566235RJNR can support low-voltage digital loads while potentially sharing power rails with sensitive analog circuits such as op-amps or ADCs. However, the 600kHz switching frequency—while enabling compact magnetics—produces conducted emissions near the upper end of the audio band. Without proper PCB layout and filtering, this can couple into nearby traces through capacitive or inductive paths. To mitigate this, designers often add LC filters at the output and ensure Kelvin connections for feedback networks, reducing sensitivity to ripple-induced errors in precision measurements.
What trade-offs exist between switching frequency and inductor selection when designing with the TPS566235RJNR for cost-sensitive consumer electronics?
The fixed 600kHz frequency simplifies inductor selection by allowing smaller core sizes and fewer turns compared to lower frequencies like 300kHz, reducing BOM cost and board area. However, higher-frequency inductors exhibit increased core losses and parasitic capacitance, which can degrade efficiency at elevated temperatures. Standard ferrite materials (e.g., Mn-Zn) perform well up to 600kHz, but Ni-Zn types may be needed above 1MHz. For the TPS566235RJNR, typical inductance values range from 0.47µH to 2.2µH depending on input/output ratio and ripple current tolerance. Lower inductance reduces output voltage ripple but increases peak-to-peak current stress, requiring careful trade-off analysis based on load profile and thermal budget.
Is it feasible to operate the TPS566235RJNR near its maximum input voltage (18V) with unregulated supplies, and what precautions are necessary to prevent reliability issues?
Yes, but only with robust input protection. When powered from sources like automotive batteries or PoE lines that can exceed 18V during surges, the device must withstand transient overvoltages per IEC 61000-4-5 standards. Although the absolute maximum rating is 18V, sustained operation near this limit increases gate oxide stress in the internal MOSFETs. Adding an input TVS diode rated slightly above 18V (e.g., 20V clamping voltage) protects the IC, while bulk capacitance absorbs energy from fast transients. Additionally, minimizing trace length from the input capacitor to the VIN pin reduces inductance and improves surge response, preventing latch-up during hot-plug events.
How does the synchronous rectification feature in the TPS566235RJNR improve thermal performance in high-input-to-output differential applications?
Synchronous rectification replaces the traditional Schottky diode with a low-RDS(on) MOSFET, typically achieving 0.03Ω conduction resistance versus 0.3–0.5Ω for diodes. In a 12V-to-3.3V conversion scenario, this reduces conduction loss by nearly 90%, lowering power dissipation from ~1W (diode-based) to ~0.1W for the same output current. This directly decreases the regulator’s junction temperature, enabling continuous 6A operation without heatsinking in many cases. The improved efficiency also extends battery life in portable devices, making the TPS566235RJNR particularly suitable for intermediate bus architectures where multiple downstream rails require tight voltage regulation.
What role does the enable pin play in sequencing multiple TPS566235RJNR-based rails, and how can soft-start settings affect downstream components?
The EN pin allows logic-level control for power sequencing, ensuring that one rail powers up before another to prevent reverse current flow or inrush surges. When coordinating multiple regulators, delaying the enable signal of a secondary rail using an RC network or supervisor IC ensures proper initialization order. The TPS566235RJNR offers programmable soft-start via an external capacitor connected to SS/TRK, limiting inrush current to less than 10A during startup. This prevents excessive input current spikes that could trip upstream fuses or stress bulk capacitors. Proper soft-start timing also avoids tripping overcurrent protection in downstream LDOs or load switches, enhancing system robustness.
How does the Moisture Sensitivity Level (MSL) of 2 for the TPS566235RJNR affect reflow soldering processes in high-volume manufacturing?
With an MSL rating of 2, the TPS566235RJNR requires baking only if exposed to ambient moisture beyond one year, unlike MSL-3 or higher parts that mandate pre-bake before reflow. During assembly, the device must be handled within the specified floor life (typically 168 hours at <30% RH) to avoid popcorning during thermal cycling. Standard lead-free reflow profiles (e.g., peak 245°C) are compatible, but excessive dwell time above 217°C should be avoided to prevent degradation of the mold compound. Adhering to IPC/JEDEC guidelines ensures reliable solder joints and prevents latent damage from moisture ingress.
In what scenarios would substituting the TPS566235RJNR with alternative models like RT7291AGQUF offer advantages, and what compatibility factors must be evaluated?
Alternatives such as the RT7291AGQUF from Richtek may be preferred when lower component cost or tighter form factor is critical, as some alternatives integrate additional features like I2C interface or integrated FETs. However, differences in switching frequency (often 500kHz vs. 600kHz), feedback topology, and compensation networks require redesign of external components. For instance, the RT7291 operates at 500kHz, necessitating larger inductors for similar ripple performance, increasing board area. Additionally, package footprints differ slightly—some substitutes use 12-VQFN instead of 13-VQFN-HR—requiring layout modifications. Always validate stability margins and transient response under worst-case conditions before substitution.
How does the adjustable output voltage affect fault detection strategies in safety-critical systems using the TPS566235RJNR?
Because the output can be set anywhere between 0.6V and 7V, overvoltage protection thresholds must be carefully calibrated relative to downstream load requirements. Unlike fixed-output regulators, an undervoltage lockout (UVLO) set too low may falsely trigger during brief brownouts, while setting it too high risks exposing sensitive components to insufficient headroom. The TPS566235RJNR includes internal UVLO with hysteresis, but external monitoring via an ADC or window comparator provides finer control. For functional safety applications, redundant voltage supervision circuits may be warranted, especially when the output drives FPGA cores or microcontrollers with strict power-on reset timing.
What impact does PCB trace inductance have on the TPS566235RJNR’s performance during fast load transients, and how can layout practices mitigate instability?
High parasitic inductance in input or output traces creates voltage spikes during rapid current changes, potentially exceeding the IC’s absolute maximum ratings or causing false shutdowns. For example, a 10nH trace inductance with a di/dt of 1A/ns produces a 10V spike, which is dangerous near the 18V max rating. To minimize this, keep input and output capacitors within 2mm of the VIN and SW pins, use wide, short copper pours for power paths, and avoid routing high-current loops under the IC. Ground plane stitching beneath the package further reduces impedance, improving transient response and stability across all load steps.
How does the operating temperature range (-40°C to +125°C TJ) influence derating curves for continuous 6A operation in industrial versus automotive use cases?
Continuous 6A operation is only guaranteed within the rated temperature range, and derating applies outside this window. At ambient temperatures above 85°C, the maximum allowable output current decreases due to reduced thermal headroom. For instance, in a 105°C ambient environment with natural convection cooling, continuous output might drop to 4.5A. Automotive applications often experience higher ambient temps and limited airflow, necessitating heatsinking or reduced duty cycle. Industrial systems with forced air cooling may sustain closer to full rating. Thermal modeling using junction-to-ambient resistance (θJA ≈ 35°C/W typical) helps predict real-world capability under actual environmental conditions.
What considerations apply when integrating the TPS566235RJNR into a system requiring compliance with EMI regulations such as CISPR 25?
The 600kHz switching edge rates generate conducted emissions primarily in the 150kHz–30MHz range, which must meet Class 5 limits in automotive contexts. Shielded inductors, spread-spectrum modulation (if available), and careful PCB grounding reduce spectral peaks. Place bulk decoupling capacitors near the input side and use ferrite beads on noisy nodes like the SW line. Keep feedback traces away from switching nodes to prevent coupling. If conducted emissions exceed limits, adding an input common-mode choke or LC filter may be required, though this adds cost and board space.
How does the absence of integrated protection features like OVP or OCP affect system design when using the TPS566235RJNR in harsh environments?
While the TPS566235RJNR includes basic protections (thermal shutdown, UVLO), it lacks dedicated overvoltage or overcurrent circuitry, leaving system-level protection to external components. Without a robust OVP circuit, a failed feedback divider could cause runaway output voltage, damaging downstream loads. Similarly, overcurrent events must be detected by a fuse, current sense resistor, or load switch. In mission-critical systems, redundancy or watchdog timers may supplement these measures. Designers must therefore implement comprehensive fault handling at the board level, increasing validation effort but ensuring reliability.
What are the implications of using the TPS566235RJNR in a distributed power architecture with long cable runs between the regulator and load?
Long cables introduce significant resistance and inductance, causing voltage droop under dynamic loads and degrading load regulation. The feedback loop attempts to compensate, but excessive cable length (>10cm) can destabilize the control loop if not accounted for. Solutions include placing local bypass capacitors at the load, using thicker gauge wires, or implementing remote sensing (Kelvin connection) to measure voltage at the load point rather than at the regulator. Without remote sense, even milliohm-level wire resistance can result in hundreds of millivolts drop at 6A, violating tight voltage budgets for modern SoCs.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS566235RJNR

Product Attribute TPS566235RJNT TPS566231RQFR TPS566238RQFR TPS566231PRQFR
Part Number TPS566235RJNT TPS566231RQFR TPS566238RQFR TPS566231PRQFR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Output Configuration - - - -
Current - Output - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Output Type - Current - Unbuffered Voltage - Buffered -
Base Product Number - DAC34H84 MAX500 ADS62P42
Synchronous Rectifier - - - -
Voltage - Output (Max) - - - -
Voltage - Input (Max) - - - -
Frequency - Switching - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Input (Min) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Topology - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Output (Min/Fixed) - - - -
Number of Outputs - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Function - - - -

TPS566235RJNR Datasheet PDF

Download TPS566235RJNR pdf datasheets and Texas Instruments documentation for TPS566235RJNR - Texas Instruments.

PCN Assembly/Origin
Assembly 28/Jun/2022.pdf

Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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TPS566235RJNR Image

TPS566235RJNR

Texas Instruments
32D-TPS566235RJNR

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