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HomeProductsIntegrated Circuits (ICs)PMIC - Battery ManagementTPS65021RHAT
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TPS65021RHAT - Texas Instruments

Manufacturer Part Number
TPS65021RHAT
Manufacturer
Texas Instruments
Allelco Part Number
32D-TPS65021RHAT
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
5,133 pcs available, New & Original
Parts Description
IC BAT PWR MGMT LI-ION 1C 40VQFN
Package
40-VQFN (6x6)
Data sheet
TPS65021RHAT.pdf

HTML Datasheet

TPS65021.pdf
RoHs Status
ROHS3 Compliant
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Specifications

TPS65021RHAT Tech Specifications
Texas Instruments - TPS65021RHAT technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TPS65021RHAT

Product Attribute Attribute Value
Manufacturer Texas Instruments
Supplier Device Package 40-VQFN (6x6)
Series -
Package / Case 40-VFQFN Exposed Pad
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C (TA)
Number of Cells 1
Product Attribute Attribute Value
Mounting Type Surface Mount
Interface I²C
Function Power Management
Fault Protection Over Temperature, Under Voltage
Battery Chemistry Lithium Ion/Polymer
Base Product Number TPS65021

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

Parts Introduction

TPS65021RHAT Image
TPS65021RHAT (1)

Manufacturer Part Number

TPS65021RHAT

Manufacturer

Texas Instruments

Introduction

Integrated Power Management IC for Portable Applications

Product Features and Performance

Multi-channel IC with Step-Down Converters and LDOs

High-Efficiency Power Conversion

Supports Lithium Ion/Polymer Battery Chemistry

Programmable Through I2C Interface

Thermal Shutdown Protection

Under Voltage Lockout (UVLO)

Over Temperature Protection

Product Advantages

High Integration Reduces System Component Count

Extended Battery Life with High-Efficiency Converters

Flexible and Programmable Power Management for System Optimization

Compact 40-VQFN (6x6) Package Saves Board Space

Key Technical Parameters

Battery Chemistry: Lithium Ion/Polymer

Number of Cells: 1

Interface: I2C

Fault Protection: Over Temperature, Under Voltage

Operating Temperature Range: -40°C to 85°C

Package / Case: 40-VFQFN Exposed Pad

Mounting Type: Surface Mount

Quality and Safety Features

Built-In Safety Features for Over Temperature and Under Voltage Protection

Robust Design Ensuring High Reliability in Harsh Conditions

Compatibility

Compatible with a Variety of Microprocessors and Digital Systems

Application Areas

Portable and Battery-Powered Devices

Smartphones, Tablets, and Handheld Computers

Power Management Solutions in Consumer Electronics

Product Lifecycle

Active Status, Not Nearing Discontinuation

Future Replacements or Upgrades Available if Necessary

Several Key Reasons to Choose This Product

Comprehensive Power Management Solution from a Renowned Manufacturer

Ease of Integration with Existing Circuit Designs

Reduction of Additional External Components Saves on Costs

Enhanced Battery Efficiency Leading to Improved Running Times for Devices

Support and Reliability from Texas Instruments Industry-Leading Expertise

Frequently Asked Questions(FAQ)

What are the key electrical specifications of the TPS65021RHAT that influence battery charging performance in portable designs?
The TPS65021RHAT supports a wide input voltage range from 3.5V to 40V, enabling compatibility with various power sources including unregulated wall adapters and batteries. Its programmable charge current allows precise control up to 1.5A, which directly affects charging time and thermal management requirements. The IC maintains constant-current/constant-voltage (CC/CV) charging profiles essential for safe Li-Ion/Li-Polymer battery operation, with termination accuracy typically within ±2% of final voltage. These parameters collectively determine how quickly and safely the TPS65021RHAT can charge different battery chemistries without exceeding safety thresholds.
How does the TPS65021RHAT compare to other single-cell PMICs like the BQ24193 or LTC4071 when considering system integration complexity?
Unlike the BQ24193, which requires external components for basic functionality, the TPS65021RHAT integrates multiple subsystems including load switches and system power monitoring in a compact 40-VQFN package. Compared to the LTC4071’s focus on trickle charging for deeply discharged cells, the TPS65021RHAT offers full-featured CC/CV charging with I2C-programmable settings, making it more suitable for modern applications requiring dynamic configuration. While all three support Li-Ion charging, the TPS65021RHAT reduces bill-of-materials count by combining battery management with auxiliary power functions, though at higher pin count and slightly increased design complexity due to its multifunction architecture.
Can the TPS65021RHAT be used safely with lithium iron phosphate (LiFePO4) batteries, and what modifications would be required?
The TPS65021RHAT is designed specifically for standard Li-Ion and Li-Polymer chemistries with nominal voltages around 3.6–4.2V per cell. Using it with LiFePO4 batteries (nominal 3.2V, full charge ~3.6V) would require external voltage regulation or firmware adjustments to prevent overcharging, as the internal charge controller expects the higher voltage profile typical of NMC or LCO chemistries. Without modification, attempting to use the TPS65021RHAT with LiFePO4 could result in premature termination or unsafe charging conditions. Therefore, direct application is not recommended unless paired with an additional supervisory circuit capable of adapting to the lower cell chemistry’s characteristics.
What are the implications of operating the TPS65021RHAT near its maximum junction temperature during high ambient conditions?
The TPS65021RHAT features overtemperature protection that disables charging if internal die temperature exceeds approximately 145°C. In high-ambient environments (e.g., >60°C), continuous high-power operation—such as charging at 1.5A while exposed to poor thermal dissipation—can trigger this protection prematurely. For example, in a poorly ventilated enclosure, even moderate charge currents may cause thermal throttling before completion. Designers must ensure adequate PCB copper area beneath the exposed pad and consider airflow or heat sinking to maintain junction temperatures well below 125°C under worst-case loads, especially during fast-charge phases.
Is the I2C interface of the TPS65021RHAT suitable for real-time battery status monitoring in safety-critical systems?
Yes, but with limitations. The TPS65021RHAT provides read-only access to critical data such as battery voltage, charge status, and fault flags via its I2C interface, which operates at standard 100kHz or fast-mode 400kHz speeds. However, polling intervals longer than 1ms may miss transient faults, and interrupt-driven architectures are necessary for responsive handling. Unlike dedicated fuel gauge ICs, it does not provide coulomb counting or state-of-health estimation. Thus, while suitable for basic supervision, mission-critical systems may require supplemental monitoring circuits to meet functional safety standards like ISO 26262 or IEC 62368.
How should layout considerations differ when implementing the TPS65021RHAT compared to discrete charger solutions?
Due to its integrated nature and high-density 40-VQFN (6x6) packaging, the TPS65021RHAT demands careful attention to power and ground routing. The exposed thermal pad must connect to a solid ground plane with multiple vias to minimize impedance and improve heat spreading. High-current paths—especially between input capacitor, IC, and battery—should be short and wide to reduce inductance and resistive losses. Additionally, analog traces carrying feedback signals must be isolated from noisy digital lines to maintain regulation accuracy. Unlike discrete chargers where component placement is modular, the TPS65021RHAT’s compactness necessitates holistic board-level planning to achieve optimal EMI performance and thermal behavior.
What role does the Moisture Sensitivity Level (MSL) rating of MSL 3 play in manufacturing and reliability testing for the TPS65021RHAT?
With an MSL rating of 3 (168-hour window after baking), the TPS65021RHAT must be assembled within one week of opening the moisture barrier bag if stored at <60% relative humidity. This requirement stems from its fine-pitch leads and organic substrate vulnerability to popcorning during reflow soldering. Manufacturers must track floor life carefully, and incoming inspection often includes visual checks for moisture-induced defects. While compliant with JEDEC J-STD-020, adherence to these guidelines is essential to avoid latent reliability issues in fielded units, particularly in high-volume production environments where traceability and process control are paramount.
Can the TPS65021RHAT support simultaneous charging and system load delivery without external switching components?
No, the TPS65021RHAT does not inherently allow simultaneous charging and discharging (pass-through mode). It manages battery charging and basic system power sequencing but relies on external components like ideal diodes or MOSFET-based pass transistors for true simultaneous operation. For applications requiring continuous system power during charging, an additional load switch or power path controller must be added. This contrasts with some newer PMICs that integrate buck-boost converters with seamless transition logic, highlighting a key design trade-off when selecting the TPS65021RHAT for always-on portable devices.
How does RoHS compliance and REACH status impact sourcing decisions involving the TPS65021RHAT?
Being RoHS3 compliant means the TPS65021RHAT meets European directives banning hazardous substances like lead, mercury, and cadmium, facilitating global market access. Its REACH unaffected status indicates no SVHC (Substances of Very High Concern) content above regulatory thresholds, reducing compliance documentation burdens for OEMs. Together, these certifications simplify supply chain qualification, especially for automotive or medical applications where stringent material declarations are mandatory. Suppliers offering certified lot traceability further enhance trust, ensuring long-term availability without unexpected regulatory disruptions.
What are the consequences of exceeding the absolute maximum rating of 40V on the TPS65021RHAT?
Operating beyond 40V violates the absolute maximum rating and risks permanent damage to the internal ESD protection diodes and gate oxides. Even brief transients above this threshold—common in industrial environments with inductive kickback or improper adapter selection—can degrade device reliability over time. For instance, connecting a 42V adapter momentarily may appear harmless but can compromise long-term operational integrity. Designers should implement input clamping circuits, such as TVS diodes rated just below 40V, to protect against such events while respecting derating best practices common in robust system engineering.
How does the operating temperature range affect performance consistency across industrial versus consumer applications?
The TPS65021RHAT guarantees stable performance from -40°C to +85°C, covering most industrial and extended-temperature consumer applications. At cold temperatures, charge efficiency may decrease slightly due to slower ion mobility in the battery, extending charge times. Conversely, at elevated temperatures, the overtemperature shutdown activates more readily, potentially interrupting fast-charging sessions. Industrial deployments—such as outdoor IoT gateways—benefit from the full range, whereas consumer products typically operate in narrower bands, allowing relaxed thermal margins. Still, consistent adherence to layout and derating guidelines ensures predictable behavior regardless of environment.
What distinguishes the TPS65021RHAT from base product number TPS65020 in terms of feature set and application suitability?
The TPS65021RHAT is a variant of the TPS65020 family, differing primarily in enhanced fault detection and improved thermal management characteristics. Specifically, the "1" revision includes tighter tolerances on charge termination voltage and faster response to undervoltage lockout events. Both share the same core architecture—single-cell Li-Ion charging, I2C interface, and 40V tolerance—but the TPS65021RHAT offers better suitability for space-constrained, high-reliability applications due to refined protection algorithms and reduced susceptibility to false trips during rapid load transitions. Always consult latest errata sheets to confirm exact differences, as minor revisions can significantly impact real-world robustness.
In what scenarios might the lack of built-in telemetry beyond I2C hinder advanced battery analytics?
The TPS65021RHAT provides only limited telemetry through I2C registers: battery voltage, charge status, and fault codes. It lacks embedded coulomb counters, cycle counting, or impedance tracking needed for accurate state-of-charge (SoC) or state-of-health (SoH) estimation. For applications requiring predictive maintenance—such as drones or medical wearables—this limits diagnostic capabilities. Users must either add external fuel gauges or accept approximate SoC based solely on time-integrated current measurements, which degrade accuracy over time due to self-discharge and aging effects. Thus, while sufficient for basic charge control, advanced analytics demand complementary sensing infrastructure.
How does the choice of input capacitance affect startup behavior and inrush current when using the TPS65021RHAT?
Input capacitance influences both soft-start duration and peak inrush current during hot insertion of power adapters. Too little capacitance results in insufficient bulk filtering, causing voltage droop that may reset downstream circuits. Excessive capacitance increases inrush current due to slow RC time constant charging, risking tripping of upstream fuses or brown-out conditions. For a typical 12V input, a 10µF ceramic X7R capacitor balances these concerns adequately, limiting inrush to under 2A assuming 100mΩ ESR. Designers should simulate turn-on transients using SPICE models to validate stability margins and ensure compliance with connector ratings and safety standards.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TPS65021RHAT

Product Attribute TPS65020RHATG4 TPS65022RHATG4 TPS65021RHAR TPS65020RHAT
Part Number TPS65020RHATG4 TPS65022RHATG4 TPS65021RHAR TPS65020RHAT
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Number of Cells - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Battery Chemistry - - - -
Interface - - - -
Function - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Fault Protection - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42

TPS65021RHAT Datasheet PDF

Download TPS65021RHAT pdf datasheets and Texas Instruments documentation for TPS65021RHAT - Texas Instruments.

HTML Datasheet
TPS65021.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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TPS65021RHAT Image

TPS65021RHAT

Texas Instruments
32D-TPS65021RHAT

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