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HomeProductsIntegrated Circuits (ICs)PMIC - Power Management - SpecializedTPS658621DZGUT
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TPS658621DZGUT - Texas Instruments

Manufacturer Part Number
TPS658621DZGUT
Manufacturer
Texas Instruments
Allelco Part Number
98D-TPS658621DZGUT
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,249 pcs available, New & Original
Parts Description
IC LI-ION BATT/PWR MGMT 169BGA
Package
169-BGA MicroStar (12x12)
Data sheet
TPS658621DZGUT.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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In stock: 6249

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Specifications

TPS658621DZGUT Tech Specifications
Texas Instruments - TPS658621DZGUT technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS658621DZGUT

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply -
Supplier Device Package 169-BGA MicroStar (12x12)
Series -
Package / Case 169-LFBGA
Package Tape & Reel (TR)
Product Attribute Attribute Value
Operating Temperature -
Mounting Type Surface Mount
Current - Supply -
Base Product Number TPS658621
Applications Battery Management, Display (LED Drivers), Handheld/Mobile Devices, Power Supply

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the TPS658621DZGUT support power sequencing in handheld device designs, and what are the key timing parameters to consider when integrating this PMIC?
The TPS658621DZGUT includes configurable power sequencers that enable precise control over the turn-on and turn-off order of multiple voltage rails, which is essential for preventing latch-up and ensuring reliable operation in handheld devices. Designers must evaluate the internal delay settings, external capacitor requirements on the EN pins, and the interaction between the battery management unit and the display drivers. For example, typical sequencing delays range from tens to hundreds of milliseconds depending on load conditions and external RC networks. Proper sequencing reduces stress on downstream components and improves system reliability.
What are the differences between using the TPS658621DZGUT with a single lithium-ion cell versus dual-cell configurations, particularly regarding voltage regulation and protection features?
The TPS658621DZGUT supports input voltages up to 14 V, making it suitable for both single-cell (3.0 V to 4.2 V) and dual-cell (6.0 V to 8.4 V) lithium-ion battery packs. However, in dual-cell applications, careful attention must be paid to the internal LDOs and DC-DC converters, as their efficiency and thermal performance degrade at higher input voltages. Additionally, overvoltage protection thresholds must be verified against the expanded input range. While the core functionality remains consistent, system-level power budgeting becomes more critical in multi-cell topologies to avoid thermal overload or premature shutdown.
Can the TPS658621DZGUT operate reliably in ambient temperatures typical of mobile device enclosures, and how does junction temperature affect its output accuracy?
Yes, the TPS658621DZGUT is rated for operation across industrial temperature ranges (-40°C to +85°C), which covers most mobile device environments. However, sustained high ambient temperatures combined with full-load conditions can elevate junction temperature, potentially causing dynamic current limiting or reduced output voltage accuracy due to internal reference drift. Engineers should account for self-heating effects—especially in compact form factors like the 12x12 mm MicroStar BGA—by simulating worst-case thermal profiles under peak load scenarios.
How does the TPS658621DZGUT compare to other Texas Instruments PMICs such as the TPS6598x series in terms of integration level and application focus?
While the TPS658621DZGUT is optimized for battery-powered handheld devices with integrated LED drivers and basic power sequencing, the TPS6598x series targets USB Type-C and DisplayPort alternate mode applications with protocol-based power delivery. The TPS658621 offers broader analog integration (including ADC channels and battery gauge interfaces) but lacks advanced digital communication protocols. Designers selecting between them should prioritize use case: general-purpose mobile platforms favor the TPS658621, whereas USB-C docking and fast-charging systems require the TPS6598x’s protocol stack.
What design considerations arise when routing signals near the 169-BGA MicroStar (12x12) package of the TPS658621DZGUT to maintain signal integrity and minimize noise coupling?
Due to the fine-pitch ball grid array and high pin density, PCB layout demands strict adherence to impedance control, especially for clock and control lines routed to the display backlight drivers. Power and ground planes must be decoupled with low-ESL capacitors placed within millimeters of each power pad. Stitching vias around sensitive analog paths help suppress radiated EMI from switching regulators. Misrouting can lead to visible artifacts on OLED displays or erratic behavior in battery monitoring circuits—validated through pre-layout simulation and post-manufacturing functional testing.
Is it feasible to use the TPS658621DZGUT in a hot-swappable battery backup configuration without risking latch-up or regulator instability?
Yes, the TPS658621DZGUT includes undervoltage lockout (UVLO) and reverse-current blocking features that mitigate risks during hot insertion of lithium-ion cells. However, transient spikes from connector arcing may trigger false UVLO events unless suppressed with input filtering (e.g., TVS diodes and bulk capacitance). Designers should simulate insertion transients using ESD models and verify stability margins under all possible insertion angles and contact resistances to ensure seamless transition between primary and backup power sources.
How accurate are the internal voltage references of the TPS658621DZGUT across process, voltage, and temperature (PVT) variations, and what impact does this have on regulated rail tolerances?
The internal references typically exhibit ±1% initial accuracy, but this degrades to ±2.5% over the full operating temperature range and supply voltage swing. This variation directly affects precision rails like the 1.8 V or 3.3 V outputs used by microcontrollers and sensor interfaces. In safety-critical applications, external trimming or calibration routines may be required. System architects often derate nominal voltages by 3–5% to accommodate worst-case PVT shifts, ensuring reliable margin for downstream component specifications.
What role do the built-in ADC channels play in the TPS658621DZGUT, and how can they be leveraged for real-time battery health monitoring beyond simple state-of-charge estimation?
The integrated 12-bit ADC provides access to battery voltage, temperature, and individual rail voltages, enabling continuous health diagnostics such as impedance tracking and cycle counting. By sampling these values at regular intervals and applying coulomb-counting algorithms, designers can estimate state-of-health (SOH) with reasonable accuracy (±10% typical). These data streams feed into firmware-based alert systems for predictive maintenance, which is particularly valuable in ruggedized or long-lifetime handheld deployments where battery replacement is impractical.
When selecting decoupling capacitors for the TPS658621DZGUT, how should capacitance value and ESR be chosen to stabilize the switching regulators without introducing excessive inrush current?
Decoupling capacitors must balance stability and transient response: ceramic capacitors in the 1 µF to 10 µF range with X5R/X7R dielectrics are preferred due to low ESR and stable capacitance over temperature. Higher-value bulk capacitors (e.g., 47 µF) may be needed at the input to absorb startup surges, but their ESR should remain below 50 mΩ to avoid damping oscillations in the feedback loop. Placement within 1 mm of respective power pads ensures minimal loop inductance, preserving phase margin under variable loads.
How does the Moisture Sensitivity Level (MSL) rating of 3 for the TPS658621DZGUT influence handling procedures during assembly in high-humidity manufacturing environments?
With an MSL of 3 and a floor life of 168 hours, the TPS658621DZGUT must be stored in dry cabinets (<10% RH) and processed within one week of opening. Exposure beyond this window risks popcorning during reflow soldering, which could compromise solder joints in the fine-pitch BGA package. Facilities must implement real-time humidity logging and automated alerts to prevent shelf-life violations, especially during seasonal humidity fluctuations common in regions with tropical climates.
What trade-offs exist between using the internal LDOs versus the buck converters of the TPS658621DZGUT for supplying logic voltages in power-constrained designs?
Internal LDOs offer simplicity and low noise but suffer from poor efficiency (often <60%) at moderate load currents due to linear dropout losses. In contrast, the integrated buck converters achieve >85% efficiency but generate switching noise that may interfere with analog subsystems. For sub-100 mA loads, LDOs are preferable; for higher currents (>200 mA), buck converters reduce total system power consumption and heat dissipation—critical factors in thermally limited handheld devices.
Are there any known compatibility issues between the TPS658621DZGUT and certain OLED display controllers that rely on specific gamma correction or brightness scaling algorithms?
Some OLED controllers expect analog dimming signals with precise voltage levels for gamma correction, while the TPS658621DZGUT provides PWM-controlled LED drivers with limited resolution (typically 8-bit). Mismatched dimming granularity can result in perceptible brightness steps or color inaccuracies. Designers should verify that the driver’s output matches the display IC’s expected input characteristics, possibly requiring external DACs or software compensation if finer control is mandated by visual quality standards.
How does the absence of programmable I²C addresses on the TPS658621DZGUT affect system-level device enumeration compared to PMICs with address pins?
Unlike some competitors, the TPS658621DZGUT uses fixed I²C addresses determined by internal pull-ups and cannot be changed via external resistors or firmware. This simplifies driver development but limits parallel instances in multi-PMIC systems. If two identical PMICs are needed (e.g., in split-battery architectures), alternative solutions such as GPIO-based chip selects or secondary buses must be implemented, adding complexity and reducing scalability. Architects should assess this constraint early in system topology planning.
What impact does enabling the internal thermal shutdown feature of the TPS658621DZGUT have on system availability during prolonged high-load operation?
Thermal shutdown activates when junction temperature exceeds ~150°C, cutting off all regulated outputs until cooling occurs. While this protects the IC, it also causes immediate loss of power to downstream components, resulting in system reset or interruption. In mission-critical handheld tools, this behavior may necessitate heatsinking, dynamic load shedding, or redundant power rails to maintain operational continuity despite sustained thermal stress.
How can the TPS658621DZGUT’s built-in brown-out detection assist in preventing microcontroller resets during sudden battery voltage drops?
Brown-out detection monitors the main supply rail and triggers a reset pulse when voltage falls below a programmable threshold (typically adjustable from 2.5 V to 4.2 V). This prevents erratic behavior in MCUs during rapid discharge events. By configuring the threshold slightly above the minimum operating voltage of the host processor, designers ensure clean initialization even as battery voltage declines toward end-of-life conditions, improving user experience and data integrity.
Given its RoHS3 compliance and EAR99 classification, what export or supply chain documentation is required when sourcing the TPS658621DZGUT internationally?
As an EAR99 component with RoHS3 compliance, the TPS658621DZGUT generally avoids ITAR restrictions and requires only standard commercial documentation (commercial invoices, packing lists). However, exporters must still comply with local import regulations and may need to provide certificates of conformance referencing HTSUS 8542.39.0001. Suppliers should maintain REACH declarations confirming no SVHCs above 0.1% w/w to facilitate customs clearance in EU markets.
What are the implications of using the TPS658621DZGUT in medical-grade handheld devices that require fault-tolerant power delivery under ISO 13485 conditions?
Medical devices demand rigorous failure-mode analysis, so reliance on the TPS658621DZGUT necessitates thorough qualification testing per IEC 60601-1, including single-fault tolerance assessments of power rails and isolation between patient-connected and non-patient circuits. While the PMIC itself is not medical-rated, its use in such systems must be accompanied by additional hardware safeguards (e.g., redundant regulators, watchdog timers) and software diagnostics to meet regulatory expectations for safe operation during foreseeable misuse or component degradation.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS658621DZGUT

Product Attribute TPS658621CZGUT TPS658621AZGUT TPS658621AZGUT-1 TPS658621DZGUR
Part Number TPS658621CZGUT TPS658621AZGUT TPS658621AZGUT-1 TPS658621DZGUR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Base Product Number - DAC34H84 MAX500 ADS62P42
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Voltage - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Current - Supply - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Applications - - - -

TPS658621DZGUT Datasheet PDF

Download TPS658621DZGUT pdf datasheets and Texas Instruments documentation for TPS658621DZGUT - Texas Instruments.

PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf

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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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Texas Instruments

TPS658621DZGUT

Texas Instruments
98D-TPS658621DZGUT

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