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Texas Instruments TPS65012RGZT
- Part No.:
- TPS65012RGZT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
TPS65012RGZT.pdf
- Description:
- IC BATT MFUNC LI-ION 1CEL 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:248
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Product details
Overview
TPS65012RGZT from Texas Instruments is a highly integrated Li-Ion linear charge controller and multi-rail power management IC for single-cell battery systems. It delivers 1-A VMAIN and 400-mA VCORE step-down converters, dual 200-mA LDOs, I²C interface, thermal shutdown, and autonomous USB/AC input selection - deployed in cellular phones and PDAs requiring compact, low-quiescent-power system power.
For engineers reviewing the TPS65012RGZT datasheet, TPS65012RGZT pinout, TPS65012RGZT application, or TPS65012RGZT equivalent, key selection criteria include its dual-step-down topology with programmable output voltages (VMAIN: 2.5–3.3 V; VCORE: 0.85–1.6 V), 70-µA quiescent current, 1% reference accuracy, and 48-pin VQFN package with exposed thermal pad.
Technical Context
The TPS65012RGZT integrates two synchronous 1.25-MHz step-down converters operating in PWM/PFM mode to maximize efficiency across light-to-heavy loads. Its linear charger supports autonomous AC/USB source selection, programmable charge current via ISET resistor, and full safety monitoring including UVLO, thermal fault, and battery cover detection.
Power sequencing is controlled via PS_SEQ, DEFCORE, and DEFMAIN pins; LDO1/LDO2 are enabled and configured over I²C (100/400 kHz); GPIOs support open-drain logic-level interfacing; and dedicated drivers handle LED2 blink control and VIB motor activation - all coordinated under a unified low-power architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VMAIN Output | Fixed 2.5 V / 2.75 V / 3.0 V / 3.3 V; selected by DEFMAIN pin; ±3% tolerance over load/temperature ensures stable I/O rail regulation. |
| VCORE Output | Programmable 0.85–1.6 V in 0.1-V steps; selected by DEFCORE pin; ±3% accuracy enables precise processor core voltage scaling. |
| Charge Current | 100–1000 mA (AC) or 80–500 mA (USB); set by external ISET resistor and I²C register CHGCONFIG<4:3>, supporting Li-ion fast-charge profiles. |
| Quiescent Current | 70 µA typical in full-power mode; drops further in low-power mode - critical for extending battery life in always-on portable devices. |
| I²C Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible; supports address differentiation via IFLSB pin for multi-device bus configurations. |
| Thermal Protection | Thermal shutdown at TJ = 160°C with 20°C hysteresis; suspend at 145°C; monitored via TS pin with 102-µA current source and analog comparator. |
| Package | 48-pin VQFN (RGZ), 7.0 mm × 7.0 mm, 0.5-mm pitch, with exposed thermal pad - optimized for high-density PCB layouts and thermal dissipation. |
Pinout & Package
TPS65012RGZT uses a 48-pin VQFN (RGZ) package with an exposed thermal pad soldered to PCB ground for enhanced thermal performance. Pin numbering follows standard top-view layout with functional grouping across charger, regulators, LDOs, drivers, and control interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBAT_A / VBAT_B | Battery sense and output | VBAT_A is high-impedance battery voltage monitor; VBAT_B is low-impedance battery power output - enables accurate state-of-charge and safe charging path control. |
| AC / USB | Charger input sources | Independent inputs for wall adapter (AC) and USB port (USB); internal FETs and current sensing enable automatic priority-based source selection. |
| VMAIN / VCORE | Feedback inputs | Direct connection points for output voltage feedback; used with external resistive dividers to configure fixed or adjustable regulator outputs. |
| L1_A / L1_B / L2 | Switch node terminals | L1_A/L1_B drive the VMAIN buck converter's high-side/low-side MOSFETs; L2 drives VCORE converter - require external inductors and low-ESR capacitors. |
| VLDO1 / VLDO2 | LDO outputs | 200-mA regulated outputs; enabled/disabled and voltage trimmed via I²C; VINLDO1/VINLDO2 accept 1.8–6.5 V input for flexible supply routing. |
| SCLK / SDAT | I²C interface | Open-drain bidirectional serial interface compliant with SMBus/I²C standards; supports configuration, status readback, and dynamic voltage scaling. |
| PG / INT / PWRFAIL | Status and fault outputs | PG indicates valid input power; INT signals charge termination/faults; PWRFAIL asserts on UVLO, overtemperature, or BATT_COVER removal - all open-drain for system-level interrupt handling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual step-down converters | 1-A VMAIN and 400-mA VCORE converters with 95%/90% peak efficiency and 1.25-MHz switching frequency - reduce external component count and footprint. |
| Linear charger with auto-source selection | Supports simultaneous AC and USB inputs with seamless handover, programmable current (via ISET), and safety features including precharge, taper, termination, and thermal foldback. |
| Configurable LDO pair | Two 200-mA LDOs (VLDO1/VLDO2) with 1.8–6.5 V input range, ±3% accuracy, and I²C-controlled enable/voltage trim - ideal for auxiliary rails and peripheral biasing. |
| Low-power deep-sleep mode | LOW_PWR pin lowers or disables VCORE during system idle; reduces total system current to <25 µA - extends standby time in handheld and IoT edge devices. |
| Integrated driver functions | Dedicated LED2 (blink-programmable) and VIB (100-mA sink) drivers eliminate discrete components; GPIO1–GPIO4 provide configurable open-drain I/O for system signaling. |
Applications
| Cellular Smartphones | PDA Systems |
|---|---|
|
Use Scenario: Compact handheld device powered by single Li-ion cell requiring multiple regulated rails for application processor, memory, display, and peripherals. IC Role / Device Role: Central power management unit providing VMAIN (3.3 V I/O), VCORE (1.2–1.5 V CPU), dual LDOs (for audio codec and sensors), and smart charging. Use Value: Reduces bill-of-materials by integrating charger, two buck converters, two LDOs, drivers, and I²C control - enabling sub-100 mm² power solution area. |
Use Scenario: Portable digital assistant with always-on connectivity, touch interface, and extended battery runtime requirements. IC Role / Device Role: System power supervisor managing battery charging, dynamic voltage scaling of processor core, and sequenced power-up/down of subsystems. Use Value: 70-µA quiescent current and LOW_PWR deep-sleep mode extend standby time beyond 14 days; I²C programmability enables firmware-driven power policy updates. |
| Digital Still Cameras | Internet Audio Players |
|
Use Scenario: Battery-powered camera with high-current flash LED, image sensor, and real-time video processing. IC Role / Device Role: Supplies VMAIN (2.8 V for sensor interface), VCORE (1.1 V for DSP), and VLDO2 (3.0 V for flash driver) while managing USB charging and thermal limits. Use Value: Integrated VIB and LED2 drivers directly control focus motor and status indicators; PWRFAIL signal triggers graceful shutdown before brownout. |
Use Scenario: Portable media player with OLED display, stereo DAC, Bluetooth radio, and microSD card interface. IC Role / Device Role: Delivers clean, low-noise power to analog audio stages (via VLDO1), digital core (VCORE), and I/O (VMAIN), while coordinating USB charging and battery protection. Use Value: 1% reference voltage and <0.12%/A load regulation ensure stable DAC reference; PSRR >60 dB at 100 Hz minimizes switching noise coupling into audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RGZR | Three buck converters (1.5 A / 1.5 A / 1.5 A), no linear charger; I²C interface; same 48-pin VQFN package. | Targeted at systems with higher current demands and no battery charging requirement - e.g., embedded industrial controllers with external charger. | Select TPS65023RGZR when primary need is multi-rail DC-DC conversion without integrated charging; verify thermal design due to higher power density. |
| BQ24075RGTR | Dedicated linear charger only (1 A max), no DC-DC converters or LDOs; 16-pin QFN; supports USB/AC input with I²C control. | Used where charging is isolated from system power regulation - e.g., add-on battery pack or secondary charging module in modular designs. | Choose BQ24075RGTR when system already has separate PMIC for regulation and requires only intelligent, safety-certified charging functionality. |
Compared with TPS65012RGZT, TPS65023RGZR offers higher current capability but lacks battery management; BQ24075RGTR provides focused charging precision but no system rail generation - making TPS65012RGZT uniquely suited for space-constrained, single-cell Li-ion devices needing full power integration.
Availability
TPS65012RGZT is available at Aetrix Electronics and suitable for cellular smartphones, PDAs, digital still cameras, and internet audio players requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.
Supply support for TPS65012RGZT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in energy-efficient electronics.
The TPS65012RGZT belongs to TI's portable power management IC family, designed specifically for Li-ion–powered handheld devices demanding high integration, low quiescent current, and flexible programmability in minimal board area.
FAQ
What is the maximum supported charge current for TPS65012RGZT using the AC adapter input?
The TPS65012RGZT supports up to 1000 mA charge current when powered from the AC adapter input, programmable via the external ISET resistor and confirmed by the CHGCONFIG<4:3> register setting. This value is validated across the full operating temperature range (0°C to 85°C) and complies with JEITA-compliant charging profiles when combined with TS pin monitoring.
How does the TPS65012RGZT handle power source arbitration between USB and AC inputs?
The TPS65012RGZT performs autonomous power source selection: AC input takes priority over USB. When both are present, the internal FETs route power from AC to the battery and system rails; if AC is removed, it seamlessly transitions to USB without interruption. No host intervention or I²C command is required for this handover.
Can the VCORE output voltage of TPS65012RGZT be adjusted dynamically during operation?
Yes - the VCORE output voltage of TPS65012RGZT can be adjusted dynamically via I²C register writes to the CORE_VOLTAGE register, enabling real-time voltage scaling for processor performance/power trade-offs. The hardware DEFCORE pin sets the default boot voltage (1.5 V or 1.6 V), but I²C overrides this after initialization.
What is the purpose of the PS_SEQ pin on the TPS65012RGZT?
The PS_SEQ pin on the TPS65012RGZT controls the power-up and power-down sequencing order of the VMAIN and VCORE step-down converters. When pulled high, VMAIN powers up before VCORE; when pulled low, VCORE powers up first - ensuring correct voltage ramp timing for processors with strict sequencing requirements.
Does the TPS65012RGZT support battery temperature monitoring, and how is it implemented?
Yes - the TPS65012RGZT supports battery temperature monitoring via the TS pin, which connects to an NTC thermistor. An internal 102-µA current source biases the thermistor, and the resulting voltage is compared against thresholds (V(LTF) = 2.50 V, V(HTF) = 0.50 V) to detect cold/hot conditions and suspend charging accordingly.
TPS65012RGZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Multi-Function Controller
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- -
- Interface:
- I2C, USB
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-VQFN (7x7)
TPS65012RGZT FAQ
1.How can I place an order for TPS65012RGZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65012RGZT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS65012RGZT reliable?
The price and inventory of TPS65012RGZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65012RGZT is usually 5 days.
3.What payment methods are accepted for TPS65012RGZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65012RGZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65012RGZT?
TPS65012RGZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65012RGZT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS65012RGZT?
For technical support, including TPS65012RGZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65012RGZT requirements.
6.How does Aetrix verify that TPS65012RGZT is sourced from the original manufacturer or authorized distributors?
All TPS65012RGZT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS65012RGZT meets industry standards.
7.What is the process for return or replacement of TPS65012RGZT?
All TPS65012RGZT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65012RGZT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS65012RGZT part is unused and in its original packaging.
Return procedure for TPS65012RGZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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