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Texas Instruments TPS650242RHBRG4
- Part No.:
- TPS650242RHBRG4
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS650242RHBRG4.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 32VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS650242RHBRG4 from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-ion/Li-polymer systems, delivering three synchronous step-down converters (1.0 A / 0.8 A / 0.8 A), two 200 mA general-purpose LDOs, and one 30 mA always-on LDO (Vdd_alive). It supports dynamic core voltage scaling via DEFDCDC3 pin (1.0 V / 1.5 V), operates at 2.25 MHz switching frequency, and features 85 µA quiescent current in PFM mode - enabling compact, high-efficiency power rails for ARM-based processors and mobile applications.
For engineers reviewing the TPS650242RHBRG4 datasheet, TPS650242RHBRG4 pinout, TPS650242RHBRG4 application, or TPS650242RHBRG4 equivalent, key selection considerations include its fixed dual-core/memory output voltages (3.3 V / 1.8 V), programmable DCDC3 output (1.0 V or 1.5 V), separate enable control per converter, and 5 mm × 5 mm VQFN-32 package with thermal pad - critical for space-constrained portable designs requiring stable multi-rail sequencing.
Technical Context
The TPS650242RHBRG4 implements three independent synchronous buck converters with integrated P/N-channel MOSFETs, each supporting adjustable output via external resistor dividers or factory-set voltages (DCDC1: 3.3 V or 2.8 V; DCDC2: 1.8 V or 2.5 V; DCDC3: 1.0 V or 1.5 V). All converters operate in automatic PFM/PWM mode (controlled by MODE pin) to maintain >90% efficiency across 10 µA–800 mA load range.
It integrates two externally adjustable 200 mA LDOs (VLDO1/VLDO2) with 1 V feedback reference and a dedicated 30 mA Vdd_alive LDO (1.2 V output), plus battery monitoring via PWRFAIL_SNS comparator and open-drain PWRFAIL output. Analog and power grounds are separated (AGND1/AGND2, PGND1/PGND2/PGND3) to minimize noise coupling in mixed-signal SoC power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output Current | 1000 mA max - powers system I/O or peripheral rails at 3.3 V or 2.8 V with ±2% regulation accuracy |
| DCDC2 Output Current | 800 mA max - supplies memory subsystem (e.g., SDRAM, NAND flash) at 1.8 V or 2.5 V |
| DCDC3 Output Voltage | 1.0 V or 1.5 V selectable via DEFDCDC3 pin - enables dynamic core voltage scaling for ARM Cortex-A8/A9 processors |
| LDO1/LDO2 Output Current | 200 mA each - supports analog sensors, audio codecs, or interface logic with external resistor-adjustable output (1–3.3 V) |
| Vdd_alive Output | 1.2 V / 30 mA - maintains real-time clock or wake-up circuitry during deep sleep or battery backup |
| Switching Frequency | 2.25 MHz (±15%) - allows use of small 2.2 µH inductors and 10–22 µF ceramic output capacitors, reducing board area |
| Quiescent Current | 85 µA typical in PFM mode - extends battery life in low-power standby states without sacrificing transient response |
Pinout & Package
The TPS650242RHBRG4 is housed in a thermally enhanced 32-pin VQFN package (5.0 mm × 5.0 mm, 0.5 mm pitch) with exposed PowerPad for improved thermal dissipation. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDCDC3 | Feedback input for DCDC3 converter | Connects directly to DCDC3 output node for closed-loop voltage regulation; requires 10–22 µF ceramic capacitor |
| DEFDCDC3 | DCDC3 output voltage select | Digital input: LOW = 1.0 V, HIGH = 1.5 V - sets core rail voltage without external resistors |
| EN_DCDC3 | Enable control for DCDC3 | Active-high logic input; disables converter and reduces quiescent current to 0.1 µA in shutdown |
| L3 | Switch node for DCDC3 | Connects to 2.2 µH inductor; carries high-frequency pulsed current - requires tight layout and ground plane |
| PGND3 | Power ground return for DCDC3 | Separate low-impedance path for DCDC3 switch current - must be connected to PowerPad and AGND near L3 |
Key Features
| Feature | Design Value |
|---|---|
| Three independent buck converters | Enables simultaneous, sequenced power-up of core, memory, and I/O rails - eliminates need for discrete regulators and simplifies BOM |
| Programmable DCDC3 output (1.0 V / 1.5 V) | Supports dynamic voltage and frequency scaling (DVFS) in ARM-based applications - improves energy efficiency during variable workload |
| Separate enable pins per converter | Allows fine-grained power domain control (e.g., disable memory rail during idle while keeping core active) - enhances system-level power management |
| 200 mA adjustable LDOs with 1 V reference | Permits precise output setting (1–3.3 V) using standard resistor ratios - avoids custom LDOs for sensor or interface biasing |
| 85 µA quiescent current in PFM mode | Maintains >85% efficiency down to 100 µA load - extends battery runtime in always-on or low-duty-cycle modes |
Applications
| Smartphone Baseband Power | ARM Cortex-A8 Tablet PMU |
|---|---|
Use Scenario: Powers baseband processor, RF transceivers, and display interface in single-cell Li-ion smartphones. IC Role / Device Role / Timing Role: Provides sequenced 1.0 V core, 1.8 V memory, and 3.3 V I/O rails with dynamic core scaling via DEFDCDC3 pin. Use Value: Reduces component count by integrating three bucks + three LDOs in 5 mm × 5 mm footprint - saves >30 mm² PCB area vs discrete solution. | Use Scenario: Manages power for ARM Cortex-A8 SoC, LPDDR2 memory, and touchscreen controller in 7-inch tablets. IC Role / Device Role / Timing Role: Delivers 1.0 V/1.5 V core voltage (switched dynamically), 1.8 V memory rail, and 3.3 V I/O with independent EN_DCDCx control for power-state transitions. Use Value: Enables fast wake-from-sleep (<100 µs) via dedicated Vdd_alive LDO and low-quiescent-current PFM mode - extends standby time to >14 days. |
| Digital Camera Image Processor | GPS Navigation Module |
Use Scenario: Supplies image signal processor (ISP), CMOS sensor, and SD card interface in portable digital cameras. IC Role / Device Role / Timing Role: Generates 1.0 V core, 1.8 V sensor bias, and 3.3 V SDIO interface rails with soft-start ramp time of 750 µs to prevent inrush current. Use Value: Achieves >92% peak efficiency at 500 mA load - minimizes thermal rise in sealed camera housing during video capture. | Use Scenario: Powers GPS baseband IC, RF front-end, and flash memory in automotive-grade navigation modules. IC Role / Device Role / Timing Role: Provides 1.5 V core (for high-accuracy GNSS processing), 1.8 V memory, and 3.3 V serial interface with PWRFAIL monitoring for graceful shutdown on battery drop. Use Value: Integrates battery voltage monitoring (PWRFAIL_SNS threshold = 1.0 V ±2%) - eliminates external supervisor IC and reduces BOM cost by $0.18. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650241RHB | Higher DCDC1/DCDC2 current (1.6 A / 1.0 A); DCDC3 outputs 0.9 V / 1.375 V | Better suited for higher-performance ARM Cortex-A9 systems requiring >1 A core rail | Select when core current exceeds 1.0 A or 0.9 V core voltage is required for advanced process nodes |
| TPS650243RHB | Same 1.0 A / 0.8 A / 0.8 A current ratings; DCDC3 outputs 1.0 V / 1.2 V instead of 1.0 V / 1.5 V | Optimized for systems needing tighter core voltage tolerance (±1% at 1.2 V) over wider temperature range | Choose for applications where 1.2 V core rail stability is prioritized over 1.5 V headroom for burst-mode operation |
Compared with TPS650241RHB and TPS650243RHB, the TPS650242RHBRG4 uniquely balances 1.0 A core capability with 1.5 V maximum DCDC3 output - offering optimal voltage headroom for ARM Cortex-A8 DVFS while maintaining pin compatibility and identical thermal performance in the RHB package.
Availability
TPS650242RHBRG4 is available at Aetrix Electronics and suitable for smartphone baseband power, ARM tablet PMU, digital camera image processor, and GPS navigation module applications requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for TPS650242RHBRG4 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 company specializing in analog, embedded processing, and power management technologies, with leadership in high-efficiency DC-DC conversion and battery-powered system solutions.
The TPS65024x product line was designed specifically for Li-ion/Li-polymer powered portable electronics - integrating multiple power rails, dynamic voltage scaling, and ultra-low quiescent current to maximize battery life in space-constrained handheld devices.
FAQ
What output voltages does the TPS650242RHBRG4 support for its DCDC3 converter?
TPS650242RHBRG4 supports two fixed DCDC3 output voltages: 1.0 V when DEFDCDC3 is logic LOW, and 1.5 V when DEFDCDC3 is logic HIGH. This dual-voltage capability enables dynamic core voltage scaling for ARM-based processors without external resistor networks. The TPS650242RHBRG4 datasheet specifies ±2% output accuracy across –40°C to +85°C ambient temperature and full load range.
How does the TPS650242RHBRG4 manage power efficiency at light loads?
The TPS650242RHBRG4 automatically enters pulse-frequency modulation (PFM) mode at light loads (typically <10 mA), reducing switching frequency and gate drive losses to achieve 85 µA typical quiescent current. When load increases, it seamlessly transitions to fixed-frequency PWM mode (2.25 MHz) - maintaining >90% efficiency from 100 µA to full rated current. This behavior is controlled internally and requires no external configuration for TPS650242RHBRG4.
Can the TPS650242RHBRG4's LDO outputs be adjusted externally?
Yes, both VLDO1 and VLDO2 outputs of the TPS650242RHBRG4 are externally adjustable using resistor dividers connected to FB_LDO1 and FB_LDO2 pins. Each LDO uses a 1.0 V internal reference, allowing output voltage setting from 1.0 V to 3.3 V. The TPS650242RHBRG4 datasheet provides standard resistor ratio tables and specifies ±1% load regulation accuracy across 0–200 mA output current.
What is the purpose of the PWRFAIL and PWRFAIL_SNS pins on the TPS650242RHBRG4?
The PWRFAIL_SNS pin on the TPS650242RHBRG4 monitors battery voltage and feeds into an internal comparator with 1.0 V ±2% threshold. When sensed voltage falls below this level, the open-drain PWRFAIL output asserts LOW to signal impending power loss - enabling host processors to initiate safe shutdown or data save routines. This integrated function replaces external voltage supervisors in TPS650242RHBRG4-based designs.
Does the TPS650242RHBRG4 require external components for basic operation?
Yes, the TPS650242RHBRG4 requires external components for full functionality: three 2.2 µH inductors (L1–L3), six ceramic capacitors (10–22 µF output, 10 µF input per buck), input decoupling at VCC (1 µF), and output capacitors for VLDO1/VLDO2 (2.2 µF each). The TPS650242RHBRG4 datasheet specifies exact values and placement guidelines in Section 12 (Layout) to ensure stability and EMI compliance.
TPS650242RHBRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Power Management
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Fault Protection:
- Over Temperature, Under Voltage
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
TPS650242RHBRG4 FAQ
1.How can I place an order for TPS650242RHBRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650242RHBRG4 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 TPS650242RHBRG4 reliable?
The price and inventory of TPS650242RHBRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650242RHBRG4 is usually 5 days.
3.What payment methods are accepted for TPS650242RHBRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650242RHBRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650242RHBRG4?
TPS650242RHBRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650242RHBRG4 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 TPS650242RHBRG4?
For technical support, including TPS650242RHBRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650242RHBRG4 requirements.
6.How does Aetrix verify that TPS650242RHBRG4 is sourced from the original manufacturer or authorized distributors?
All TPS650242RHBRG4 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 TPS650242RHBRG4 meets industry standards.
7.What is the process for return or replacement of TPS650242RHBRG4?
All TPS650242RHBRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS650242RHBRG4, 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 TPS650242RHBRG4 part is unused and in its original packaging.
Return procedure for TPS650242RHBRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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