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Texas Instruments TPS650241RHBT
- Part No.:
- TPS650241RHBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS650241RHBT.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
TPS650241RHBT from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-ion/Li-polymer systems, featuring three synchronous step-down converters (1.6 A / 1.0 A / 0.8 A), two 200 mA general-purpose LDOs, and one 30 mA always-on Vdd_alive LDO. It delivers 97% peak efficiency at VDCDC1, supports dynamic voltage scaling on DCDC3 (0.9 V / 1.375 V), and operates across –40°C to +85°C ambient temperature.
For engineers reviewing the TPS650241RHBT datasheet, TPS650241RHBT pinout, TPS650241RHBT application, or TPS650241RHBT equivalent, key selection criteria include core/memory/I/O rail separation, DEFDCDC3-configurable output voltage, MODE-selectable PFM/PWM operation, and 2.25 MHz switching frequency with low quiescent current (40–170 µA).
Technical Context
The TPS650241RHBT integrates three independent buck regulators with separate enable pins (EN_DCDC1/2/3), fixed-frequency PWM or adaptive PFM mode via MODE pin, and external feedback configuration through DEFDCDC1/2/3 pins. Each converter uses internal P- and N-channel MOSFETs with ON-resistances of 125–698 mΩ and soft-start ramp time of 750 µs.
Its analog subsystem includes dual 200 mA LDOs with externally adjustable outputs (via FB_LDO1/FB_LDO2), a dedicated 30 mA Vdd_alive LDO (1.2 V nominal), and a PWRFAIL comparator with hysteresis (40–60 mV) referenced to PWRFAIL_SNS. All ground paths are split into AGND1/AGND2 and PGND1/PGND2/PGND3 for noise isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output Current | 1.6 A max - supports high-current I/O or peripheral rails (e.g., USB PHY, display interface) |
| DCDC2 Output Current | 1.0 A max - powers memory subsystems (SDRAM, NAND flash) requiring stable 1.8 V or 2.5 V |
| DCDC3 Output Voltage | 0.9 V / 1.375 V selectable via DEFDCDC3 - enables dynamic core voltage scaling for ARM processors |
| Switching Frequency | 2.25 MHz (±15%) - allows compact 2.2 µH inductors and reduces EMI filtering burden |
| Quiescent Current | 40 µA (DCDC1 only active, PFM) - extends battery life in standby/sleep modes |
| LDO1/LDO2 Output | 200 mA each, 1–3.3 V adjustable - supplies auxiliary logic, sensors, or RF bias rails |
| Vdd_alive Output | 30 mA @ 1.2 V - maintains real-time clock, wake-up circuitry, or backup registers during deep sleep |
Pinout & Package
TPS650241RHBT is housed in a thermally enhanced 32-pin VQFN package (5.0 mm × 5.0 mm, RHB), with exposed PowerPad connected to AGND for improved thermal dissipation and EMI performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDCDC3 | Feedback input for core converter | Direct connection to DCDC3 output enables precise regulation; requires 0.1% resistor divider for adjustable mode |
| DEFDCDC3 | Core voltage select input | Logic LOW = 0.9 V, HIGH = 1.375 V - sets processor core voltage without external DAC or I²C |
| EN_DCDC3 | Core converter enable | Active-high control allows independent sequencing of core power relative to memory/I/O rails |
| L3 | DCDC3 switch node | Connects to 2.2 µH inductor; layout must minimize loop area to reduce radiated EMI |
| PGND3 | Power ground for DCDC3 | Separate ground return path prevents switching noise coupling into analog sections |
| VLDO1 | LDO1 output | Supplies up to 200 mA at user-defined voltage; requires ≥2.2 µF ceramic output capacitor for stability |
| FB_LDO1 | LDO1 feedback input | Accepts resistor divider to set output between 1 V and 3.3 V; reference voltage = 1.0 V ±1% |
| Vdd_alive | Always-on LDO output | Provides 1.2 V ±1% at 30 mA; critical for RTC, brown-out detection, and system reset integrity |
Key Features
| Feature | Design Value |
|---|---|
| Three independent buck converters | Enables full power-rail independence: DCDC1 (I/O), DCDC2 (memory), DCDC3 (core) with separate EN and DEF pins |
| Dynamic core voltage scaling | DEFDCDC3 pin selects between 0.9 V and 1.375 V - matches ARM Cortex-A8/A9 DVFS requirements |
| Adaptive PFM/PWM mode | MODE pin forces fixed-frequency PWM or auto-switches to PFM below ~10 mA - optimizes light-load efficiency |
| Dual 200 mA adjustable LDOs | FB_LDO1/FB_LDO2 accept external dividers - supports diverse logic families (1.8 V, 2.5 V, 3.3 V) from single VINLDO source |
| PWRFAIL monitoring | Open-drain PWRFAIL output asserts low when PWRFAIL_SNS falls below 1 V ±2% - triggers graceful shutdown before brownout |
Applications
| Smartphone Baseband Power | ARM-Based Industrial HMI |
|---|---|
Use Scenario: Single-cell Li-ion powered smartphone with ARM application processor, LPDDR2 memory, and multi-function peripherals. IC Role / Device Role / Timing Role: Central PMIC managing core (DCDC3), memory (DCDC2), and I/O (DCDC1) rails plus auxiliary LDOs for camera sensor and audio codec. Use Value: DEFDCDC3-driven voltage scaling reduces core power by >30% during idle; 97% DCDC1 efficiency extends talk time. | Use Scenario: Ruggedized human-machine interface with ARM Cortex-A9, resistive touch controller, and CAN transceiver. IC Role / Device Role / Timing Role: Primary power sequencer delivering 1.375 V core, 1.8 V memory, 3.3 V I/O, and 1.2 V Vdd_alive for RTC and watchdog. Use Value: Independent EN_DCDCx pins allow precise boot-order control; PWRFAIL signal initiates safe state save before power loss. |
| GPS Navigation Module | Digital Camera Sensor Subsystem |
Use Scenario: Portable GPS receiver with SiRFstar IV chipset, SD card interface, and OLED display backlight driver. IC Role / Device Role / Timing Role: Supplies 1.2 V Vdd_alive for GPS almanac retention, 1.8 V for SDIO interface, and 3.3 V for display logic. Use Value: Low 40 µA quiescent current in PFM mode maximizes battery runtime in tracking-only mode. | Use Scenario: High-resolution digital camera using CMOS image sensor with programmable analog bias and digital I/O. IC Role / Device Role / Timing Role: Powers sensor analog core (DCDC3 @ 0.9 V), digital interface (DCDC1 @ 2.8 V), and LDO1 for sensor bias (2.5 V). Use Value: 2.25 MHz switching frequency minimizes inductor size while maintaining <10 mVpp ripple on sensitive analog rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650240RHBT | DCDC3 outputs 1.0 V / 1.3 V (not 0.9 V / 1.375 V); lower DCDC1 current (1.0 A vs 1.6 A) | Suitable for legacy ARM9/ARM11 designs with fixed 1.0 V core; not compatible with newer Cortex-A8 DVFS profiles | Select if system requires 1.0 V core and lower cost; verify DCDC1 load does not exceed 1.0 A |
| TPS650243RHBT | DCDC3 outputs 1.0 V / 1.2 V; same 1.6 A / 1.0 A / 0.8 A current ratings as TPS650241RHBT | Optimized for systems needing tighter core voltage tolerance (±1% at 1.2 V) and lower dynamic power than 1.375 V | Choose when core voltage must be 1.2 V for thermal or timing margin reasons; shares identical pinout and layout |
Compared with TPS650240RHBT and TPS650243RHBT, the TPS650241RHBT uniquely supports 0.9 V core operation for ultra-low-power states and delivers higher DCDC1 current for demanding I/O interfaces-making it optimal for next-generation portable ARM platforms requiring aggressive DVFS.
Availability
TPS650241RHBT is available at Aetrix Electronics and suitable for smartphone baseband power, ARM-based industrial HMI, GPS navigation modules, and digital camera sensor subsystems requiring stable component supply and long-term production support.
Supply support for TPS650241RHBT 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 and embedded processing technologies, with leadership in power management, signal chain, and microcontrollers.
The TPS65024x product line was designed specifically for Li-ion-powered portable electronics requiring high-efficiency, multi-rail power conversion with minimal external components and robust thermal performance in compact 5×5 mm packages.
FAQ
What is the core output voltage range supported by the TPS650241RHBT?
The TPS650241RHBT supports two fixed core output voltages on DCDC3: 0.9 V when DEFDCDC3 is logic LOW, and 1.375 V when DEFDCDC3 is logic HIGH. This dual-voltage capability enables dynamic voltage and frequency scaling (DVFS) for ARM-based processors without requiring external voltage-setting DACs or I²C configuration. The TPS650241RHBT does not support continuous adjustment outside these two values.
How does the MODE pin affect efficiency in the TPS650241RHBT?
The MODE pin on the TPS650241RHBT selects between automatic PFM/PWM operation (MODE = LOW) and forced PWM mode (MODE = HIGH). In PFM mode, the TPS650241RHBT achieves ultra-low quiescent current (as low as 40 µA) at light loads, maximizing battery life. In forced PWM mode, it maintains constant 2.25 MHz switching for predictable EMI and transient response, though quiescent current rises to ~2.5 mA. The choice depends on whether priority is standby efficiency or regulation stability.
Can the TPS650241RHBT power both memory and I/O rails simultaneously?
Yes, the TPS650241RHBT is explicitly designed to power memory and I/O rails concurrently: DCDC2 delivers up to 1.0 A at 1.8 V or 2.5 V for memory subsystems (e.g., LPDDR, NAND), while DCDC1 provides up to 1.6 A at 2.8 V or 3.3 V for I/O interfaces (e.g., USB, display, SDIO). Their independent enable pins (EN_DCDC2 and EN_DCDC1) and separate power grounds (PGND2 and PGND1) prevent cross-rail interference and support flexible power sequencing.
What is the purpose of the PWRFAIL and PWRFAIL_SNS pins on the TPS650241RHBT?
The PWRFAIL_SNS pin on the TPS650241RHBT monitors battery voltage (VBAT) through an external resistor divider, and the PWRFAIL pin is an open-drain output that asserts LOW when the sensed voltage drops below 1.0 V ±2%. This provides early warning of impending power loss, allowing the host processor to execute safe shutdown routines-such as saving state or flushing buffers-before brownout occurs. The 40–60 mV hysteresis prevents chatter during marginal conditions.
Does the TPS650241RHBT require external compensation components for its DC-DC converters?
No, the TPS650241RHBT integrates full compensation networks for all three DC-DC converters internally. Designers only need to select appropriate external components per the datasheet: 2.2 µH inductors (L1–L3), 10–22 µF output capacitors (COUTDCDC1–3), and 10 µF input capacitors (CINDCDC1–3). The internal compensation ensures stable operation across the full load and input voltage range without requiring external RC networks or loop analysis.
TPS650241RHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
TPS650241RHBT FAQ
1.How can I place an order for TPS650241RHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650241RHBT 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 TPS650241RHBT reliable?
The price and inventory of TPS650241RHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650241RHBT is usually 5 days.
3.What payment methods are accepted for TPS650241RHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650241RHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650241RHBT?
TPS650241RHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650241RHBT 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 TPS650241RHBT?
For technical support, including TPS650241RHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650241RHBT requirements.
6.How does Aetrix verify that TPS650241RHBT is sourced from the original manufacturer or authorized distributors?
All TPS650241RHBT 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 TPS650241RHBT meets industry standards.
7.What is the process for return or replacement of TPS650241RHBT?
All TPS650241RHBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS650241RHBT, 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 TPS650241RHBT part is unused and in its original packaging.
Return procedure for TPS650241RHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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