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Texas Instruments TPS650244RHBR
- Part No.:
- TPS650244RHBR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS650244RHBR.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,123
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Product details
Overview
TPS650244RHBR 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 (DCDC1: 800 mA @ 3.3 V or 2.8 V; DCDC2: 1.6 A @ 1.8 V or 2.5 V; DCDC3: 800 mA @ 1.55 V/1.6 V), two 200-mA adjustable LDOs, and one 30-mA always-on Vdd_alive LDO. It delivers dynamic voltage scaling and high efficiency (>95% at full load) in portable applications such as smart phones and GPS devices.
For engineers reviewing the TPS650244RHBR datasheet, TPS650244RHBR pinout, TPS650244RHBR application, or TPS650244RHBR equivalent, key selection considerations include its fixed dual-core/memory rail configuration, DEFDCDC3-selectable 1.55 V / 1.6 V output for processor core, 2.25-MHz switching frequency, 85-μA quiescent current in PFM mode, and thermal shutdown protection.
Technical Context
The TPS650244RHBR implements three independent PWM/PFM hybrid synchronous buck converters with separate enable pins (EN_DCDC1/2/3) and voltage-selection inputs (DEFDCDC1/2/3). DCDC3 supports precise core voltage selection via logic-level DEFDCDC3 - LOW sets 1.55 V, HIGH sets 1.6 V - enabling dynamic scaling during processor state transitions.
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 nominal), all supplied from VINLDO (1.5–6.5 V). The device operates across –40°C to +85°C ambient, uses a shared 2.25-MHz oscillator, and enters low-power PFM mode at light loads to maintain >85% efficiency down to 100 μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output | 800 mA max @ 3.3 V or 2.8 V; supports I/O/peripheral rail with ±2% regulation in PWM/PFM mode |
| DCDC2 Output | 1.6 A max @ 1.8 V or 2.5 V; supplies memory subsystem with 95% peak efficiency |
| DCDC3 Output | 800 mA max @ 1.55 V (DEFDCDC3 = LOW) or 1.6 V (HIGH); core voltage rail with dynamic scaling |
| LDO1/LDO2 | 200 mA each, adjustable via external resistor divider; 1-V feedback reference enables precision output setting |
| Vdd_alive | 30 mA, fixed 1.2 V output; powers always-on circuitry (e.g., RTC, wake-up logic) with ±1% accuracy |
| Quiescent Current | 85 μA typical in PFM mode (all converters enabled, zero load); critical for battery runtime extension |
| Switching Frequency | 2.25 MHz nominal (±13%); enables use of compact 2.2-μH inductors and low-ESR ceramic capacitors |
Pinout & Package
The TPS650244RHBR is housed in a thermally enhanced 32-pin VQFN package (5.0 mm × 5.0 mm, RHB), with exposed PowerPad connected to AGND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDCDC3 | Feedback input for DCDC3 | Connects directly to DCDC3 output node for closed-loop regulation of 1.55 V/1.6 V core rail |
| DEFDCDC3 | DCDC3 voltage select input | Logic-level control: LOW = 1.55 V, HIGH = 1.6 V; enables hardware-based core voltage scaling |
| EN_DCDC3 | Enable input for DCDC3 | Active-high signal; disables converter and reduces quiescent current to <1 μA when pulled low |
| L3 | Switch node for DCDC3 | Connects to 2.2-μH inductor; carries high-frequency pulsed current; requires tight layout to minimize EMI |
| PGND3 | Power ground for DCDC3 | Dedicated ground return path for DCDC3 high-side/low-side MOSFETs; must be routed separately from AGND |
| VINDCDC3 | Input supply for DCDC3 | Accepts 2.5–6 V; must be tied to same source as VCC, VINDCDC1, and VINDCDC2 for proper biasing |
Key Features
| Feature | Design Value |
|---|---|
| Three independent buck converters | Enables simultaneous, optimized power delivery to core (DCDC3), memory (DCDC2), and I/O (DCDC1) rails without cross-regulation |
| Dynamic core voltage scaling | DEFDCDC3 pin allows real-time hardware selection between 1.55 V and 1.6 V for adaptive processor performance/power trade-offs |
| Ultra-low quiescent current | 85 μA in PFM mode extends battery life in standby; drops to 16 μA in full shutdown (all converters and LDOs disabled) |
| Integrated power-fail detection | PWRFAIL_SNS input and open-drain PWRFAIL output provide early warning of battery depletion to trigger safe system shutdown |
| Thermal shutdown with hysteresis | Triggers at 160°C junction temperature and releases at 140°C, preventing thermal runaway during sustained high-load operation |
Applications
| Smartphone Power Architecture | GPS Module Power Management |
|---|---|
Use Scenario: Single-cell Li-ion powered smartphone requiring independent, dynamically scalable rails for application processor core, DDR memory, and display interface. IC Role / Device Role / Timing Role: TPS650244RHBR provides three regulated DC outputs (1.55/1.6 V core, 1.8/2.5 V memory, 2.8/3.3 V I/O) with sequencing control and PFM/PWM efficiency optimization. Use Value: Enables >95% conversion efficiency at full load and sub-100 μA quiescent current in sleep mode, extending talk time by up to 18% versus discrete solutions. | Use Scenario: Portable GPS receiver needing reliable, low-noise power for RF front-end, baseband processor, and real-time clock under varying battery voltage (4.2 V → 3.0 V). IC Role / Device Role / Timing Role: TPS650244RHBR delivers stable 1.2 V (Vdd_alive), 1.8 V (memory), and 3.3 V (I/O) rails while monitoring battery health via PWRFAIL_SNS. Use Value: Integrated power-fail comparator triggers graceful shutdown before brownout, preventing data corruption in navigation log storage. |
| Digital Camera System | ARM-Based Industrial Handheld |
Use Scenario: High-resolution digital camera with image sensor, ISP, and LCD requiring fast transient response and low ripple on analog and digital rails. IC Role / Device Role / Timing Role: TPS650244RHBR supplies 1.6 V core (DCDC3), 2.5 V sensor bias (DCDC2), and 3.3 V interface (DCDC1), with soft-start ramp time of 750 μs per converter. Use Value: 2.25-MHz switching frequency minimizes output capacitor size and reduces audible noise in zoom motor drivers. | Use Scenario: Ruggedized ARM Cortex-A8 handheld used in warehouse logistics, operating continuously on Li-ion battery with frequent deep-sleep cycles. IC Role / Device Role / Timing Role: TPS650244RHBR powers processor core (1.55 V), DDR2 memory (1.8 V), and peripherals (3.3 V), while maintaining 1.2 V Vdd_alive for RTC and wake-up interrupt controller. Use Value: 30-mA Vdd_alive LDO ensures deterministic wake-up latency (<10 μs regulation time) and eliminates need for external backup battery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650243RHBR | DCDC3 outputs 1.0 V / 1.2 V (vs. 1.55 V / 1.6 V); DCDC2 rated for 1.6 A @ 2.5 V; identical pinout and package | Suitable for lower-voltage ARM9/ARM11 cores; not compatible where 1.55+ V core rail is required | Select TPS650243RHBR only if target SoC specifies 1.0–1.2 V core voltage and higher memory current demand |
| TPS650245RHBR | DCDC3 outputs 0.9 V / 1.1 V; DCDC1 rated for 1.0 A @ 3.3 V; shares same VQFN-32 footprint | Targeted at ultra-low-power Cortex-M3/M4 microcontrollers; lacks 1.6-A memory rail capability | Choose TPS650245RHBR for cost-sensitive, sub-1-V core applications where memory bandwidth is not critical |
Compared with TPS650243RHBR and TPS650245RHBR, the TPS650244RHBR uniquely supports 1.55–1.6 V core voltage scaling-critical for mid-range application processors-and maintains 1.6-A memory rail capability, making it optimal for performance-constrained portable systems requiring balanced power and thermal design.
Availability
TPS650244RHBR is available at Aetrix Electronics and suitable for smartphone power architecture, GPS module power management, and ARM-based industrial handheld applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS650244RHBR 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 90 years of innovation in energy-efficient electronics.
The TPS65024x family was designed specifically for single-cell Li-ion/Li-polymer portable systems requiring multi-rail, high-efficiency, and dynamic voltage scaling capabilities - targeting smartphones, GPS units, digital cameras, and PDAs.
FAQ
What is the core output voltage range supported by the TPS650244RHBR?
The TPS650244RHBR supports two fixed core output voltages on its DCDC3 rail: 1.55 V when DEFDCDC3 is logic LOW, and 1.6 V when DEFDCDC3 is logic HIGH. This dual-voltage capability enables hardware-based dynamic scaling for ARM-based application processors without requiring I²C communication or firmware intervention. The TPS650244RHBR does not support adjustable core voltage outside this pair.
Does the TPS650244RHBR require external resistors to set its DCDC1 and DCDC2 output voltages?
No - the TPS650244RHBR uses internal resistor dividers for default DCDC1 (3.3 V or 2.8 V) and DCDC2 (1.8 V or 2.5 V) outputs, selected by DEFDCDC1 and DEFDCDC2 logic levels. External resistors are optional: connecting DEFDCDC1/2 to a voltage divider between their respective output and GND allows adjustment within 0.6 V to VIN range, but are not required for standard operation.
How does the TPS650244RHBR manage efficiency at light load conditions?
The TPS650244RHBR automatically enters pulse-frequency modulation (PFM) mode at light loads across all three buck converters, reducing switching frequency and gate drive losses to achieve 85–90% efficiency down to 100 μA output current. When MODE pin is held HIGH, it forces fixed-frequency PWM mode for predictable EMI behavior - a key differentiator from hysteretic or burst-mode alternatives.
Can the TPS650244RHBR's LDOs be used to power noise-sensitive analog circuitry?
Yes - the TPS650244RHBR's VLDO1 and VLDO2 are low-noise, low-dropout regulators with 1-V internal reference and ±1% output accuracy. When supplied from a clean DCDC output (e.g., filtered 3.3 V rail), they deliver <20 μVRMS output noise and 10-μs load regulation time, making them suitable for powering ADC references, PLLs, or RF bias circuits - provided proper PCB layout separates LDO input/output paths from noisy switch-node traces.
What thermal protection features are built into the TPS650244RHBR?
The TPS650244RHBR includes junction-temperature sensing with thermal shutdown activation at 160°C and 20°C hysteresis (re-enable at 140°C). Its 32-pin VQFN package features an exposed PowerPad that must be soldered to a thermal pad on the PCB for effective heat dissipation. Thermal resistance is specified as RθJA = 32.2°C/W, enabling reliable operation up to 85°C ambient with appropriate copper area and airflow.
TPS650244RHBR 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)
TPS650244RHBR FAQ
1.How can I place an order for TPS650244RHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650244RHBR 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 TPS650244RHBR reliable?
The price and inventory of TPS650244RHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650244RHBR is usually 5 days.
3.What payment methods are accepted for TPS650244RHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650244RHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650244RHBR?
TPS650244RHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650244RHBR 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 TPS650244RHBR?
For technical support, including TPS650244RHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650244RHBR requirements.
6.How does Aetrix verify that TPS650244RHBR is sourced from the original manufacturer or authorized distributors?
All TPS650244RHBR 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 TPS650244RHBR meets industry standards.
7.What is the process for return or replacement of TPS650244RHBR?
All TPS650244RHBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS650244RHBR, 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 TPS650244RHBR part is unused and in its original packaging.
Return procedure for TPS650244RHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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