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Texas Instruments TPS650244IRHBRQ1
- Part No.:
- TPS650244IRHBRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS650244IRHBRQ1.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,083
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Product details
Overview
TPS650244IRHBRQ1 from Texas Instruments is an automotive-qualified power management IC (PMIC) integrating three synchronous step-down converters (VDCDC1: 800 mA @ 3.3 V, VDCDC2: 1.6 A @ 2.5 V, VDCDC3: 800 mA @ 1.55/1.6 V), two 200-mA adjustable LDOs, and a 30-mA always-on Vdd_alive LDO - all in a 32-pin QFN package. It targets Li-ion–powered automotive infotainment and ADAS subsystems requiring dynamic voltage scaling and high efficiency across wide load ranges.
For engineers reviewing the TPS650244IRHBRQ1 datasheet, TPS650244IRHBRQ1 pinout, TPS650244IRHBRQ1 application, or TPS650244IRHBRQ1 equivalent, key selection criteria include its dual-voltage core rail (1.55 V / 1.6 V via DEFDCDC3), 2.25-MHz switching frequency for compact filter design, 85-μA quiescent current in PFM mode, thermal shutdown at 160°C, and AEC-Q100 Grade 3 qualification (–40°C to +85°C).
Technical Context
The TPS650244IRHBRQ1 implements three independent synchronous buck regulators with integrated P- and N-channel MOSFETs, each supporting automatic transition between pulse-frequency modulation (PFM) at light loads and fixed-frequency PWM (2.25 MHz ±15%) under heavier loads. Its VDCDC3 converter features dynamic voltage management via the DEFDCDC3 pin, enabling real-time core voltage adjustment without sequencing interruption.
Control logic includes separate enable pins for each DC-DC converter (EN_DCDC1/2/3), independent LDO enable (EN_LDO), and a global MODE pin selecting between Power Safe (auto-PFM/PWM) and forced-PWM operation. The device integrates analog ground (AGND1/AGND2) and power ground (PGND1/2/3) separation, plus internal UVLO (2.35 V threshold) and thermal shutdown (160°C with 20°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDCDC1 Output | Fixed 3.3 V ±2% (PWM/PFM); supports 2.80 V or adjustable 0.6–VIN via resistor divider |
| VDCDC2 Output | Fixed 2.5 V ±2% (PWM/PFM); supports 1.8 V or adjustable 0.6–VIN via resistor divider |
| VDCDC3 Output | Selectable 1.55 V (DEFDCDC3 = LOW) or 1.6 V (DEFDCDC3 = HIGH), ±2% accuracy |
| Switching Frequency | 2.25 MHz typical; enables use of small 1.5–2.2 μH inductors and 10–22 μF ceramic output capacitors |
| Quiescent Current | 85 μA typical with all DC-DCs enabled and zero load in PFM mode; critical for battery runtime in standby |
| Operating Temp | –40°C to +85°C ambient; qualified per AEC-Q100 Grade 3 for automotive cabin electronics |
| Package | 32-pin QFN (RHB), 5 mm × 5 mm, 0.5-mm pitch; exposed thermal pad tied to AGND |
Pinout & Package
TPS650244IRHBRQ1 uses a 32-pin QFN (RHB) package with 0.5-mm pitch and an exposed thermal pad connected to AGND. Pin assignments are fully defined in TI SLVS994A Rev. March 2011.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDCDC3 (Pin 1) | Feedback input | Connects directly to VDCDC3 output for closed-loop regulation; sets 1.55 V/1.6 V via DEFDCDC3 logic level |
| PGND3 (Pin 2) | Power ground | Low-impedance return path for VDCDC3 switch node (L3); must be routed separately from AGND |
| L3 (Pin 3) | Switch node | Connects to VDCDC3 inductor; carries high di/dt switching current; requires short, low-inductance trace |
| VINDCDC3 (Pin 4) | Input supply | Supplies VDCDC3; must be tied to same Li-ion source as VINDCDC1/VINDCDC2/VCC |
| DEFDCDC3 (Pin 32) | Voltage select control | Logic-level input: LOW → 1.55 V, HIGH → 1.6 V; enables dynamic core voltage scaling during operation |
| EN_DCDC3 (Pin 18) | Enable control | Active-high enable for VDCDC3; allows independent power sequencing of processor core rail |
Key Features
| Feature | Design Value |
|---|---|
| Triple synchronous buck architecture | Enables independent, high-efficiency (up to 97%) power rails for I/O (3.3 V), memory (2.5 V), and core (1.55/1.6 V) in single-chip solution |
| Dynamic VDD scaling on VDCDC3 | Real-time core voltage adjustment via DEFDCDC3 pin without reset or reconfiguration - essential for ARM-based automotive processors |
| Auto-PFM/PWM mode transition | Maintains >85% efficiency down to 100 μA load while delivering full rated current; eliminates need for external mode control |
| Separate enable pins per regulator | Supports precise power sequencing (e.g., Vdd_alive → VDCDC3 → VDCDC2 → VDCDC1) required by Samsung ARM SoCs and similar processors |
| AEC-Q100 Grade 3 qualification | Validated for automotive environments: –40°C to +85°C operation, ESD robustness, and lifetime reliability per ISO/TS 16949 |
Applications
| Automotive Infotainment Head Unit | Digital Cluster Display |
|---|---|
Use Scenario: Central display unit powered by single-cell Li-ion battery, running Linux-based UI with GPU acceleration and audio DSP. IC Role / Device Role / Timing Role: TPS650244IRHBRQ1 supplies 3.3 V I/O rail, 2.5 V DDR memory rail, and dynamically scaled 1.55 V / 1.6 V core rail to Samsung Exynos application processor. Use Value: Enables seamless DVFS transitions during video playback or navigation rendering, reducing peak power by up to 22% versus fixed-core-voltage PMICs. | Use Scenario: Driver-facing TFT cluster with real-time vehicle data, warning alerts, and animated gauges. IC Role / Device Role / Timing Role: TPS650244IRHBRQ1 delivers always-on 1.2 V Vdd_alive for RTC and wake-up logic, plus sequenced 2.5 V memory and 1.55 V core rails for microcontroller. Use Value: Guarantees sub-100-ms cold-start boot time and maintains critical safety functions during ignition cycling due to dedicated low-noise Vdd_alive LDO. |
| ADAS Camera Module | Telematics Control Unit (TCU) |
Use Scenario: Rear-view camera module with image sensor, ISP, and CAN transceiver operating in engine-off battery mode. IC Role / Device Role / Timing Role: TPS650244IRHBRQ1 powers 3.3 V sensor interface, 2.5 V ISP core, and 1.6 V vision processor core - all with ultra-low quiescent current. Use Value: Achieves <100 μA system standby current by disabling unused DC-DCs and leveraging PFM mode, extending parking-mode battery life beyond 72 hours. | Use Scenario: Cellular-connected TCU managing GNSS, LTE, and vehicle diagnostics over extended temperature range. IC Role / Device Role / Timing Role: TPS650244IRHBRQ1 provides 3.3 V modem I/O, 2.5 V GNSS RF section, and 1.55 V application processor core - with thermal shutdown protection at 160°C. Use Value: Prevents thermal runaway in sealed enclosures during summer operation while maintaining CAN FD communication integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650233IRHBRQ1 | Same RHB package; VDCDC3 outputs 1.0 V / 1.2 V (not 1.55/1.6 V); lower max VDCDC2 current (1.0 A vs 1.6 A) | Targeted at lower-power OMAP processors; unsuitable for Samsung Exynos requiring ≥1.55 V core | Select only if core voltage requirement is ≤1.2 V and memory rail current ≤1.0 A |
| MAX8649ATG+T | 3.3 V / 2.5 V / 1.35 V triple buck; no Vdd_alive LDO; 1.2-MHz switching; not AEC-Q100 qualified | Designed for consumer portable devices; lacks automotive temp range, thermal shutdown, and always-on rail | Acceptable only for non-automotive industrial designs with relaxed reliability and thermal requirements |
Compared with TPS650243IRHBRQ1 (1.0 V / 1.2 V core) and MAX8649ATG+T (non-automotive, no Vdd_alive), the TPS650244IRHBRQ1 uniquely delivers 1.55 V / 1.6 V dynamic core scaling within AEC-Q100 constraints - making it the sole fit for next-generation automotive application processors requiring higher core voltages and guaranteed safety-critical always-on functionality.
Availability
TPS650244IRHBRQ1 is available at Aetrix Electronics and suitable for automotive infotainment head units, digital instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for TPS650244IRHBRQ1 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 decades of automotive-grade product development experience.
The TPS65024x product line was designed specifically for single-cell Li-ion–powered automotive electronics, delivering tightly regulated, sequenced, and dynamically scalable power rails to application processors, memory, and peripherals in space-constrained, thermally demanding environments.
FAQ
What is the maximum output current capability of the VDCDC3 converter in TPS650244IRHBRQ1?
The VDCDC3 converter in TPS650244IRHBRQ1 delivers up to 800 mA at its selectable output voltages of 1.55 V (DEFDCDC3 = LOW) or 1.6 V (DEFDCDC3 = HIGH). This rating is validated across the full operating temperature range (–40°C to +85°C) and accounts for thermal derating in the 5-mm × 5-mm QFN package. The current limit is enforced by internal circuitry to prevent damage during overload or short-circuit conditions.
How does the DEFDCDC3 pin function in TPS650244IRHBRQ1 compared to DEFDCDC1 and DEFDCDC2?
In TPS650244IRHBRQ1, the DEFDCDC3 pin is a logic-level input that selects between two fixed core voltages: 1.55 V (LOW) or 1.6 V (HIGH). Unlike DEFDCDC1 and DEFDCDC2 - which support both fixed outputs and resistor-divider–based adjustable ranges - DEFDCDC3 cannot be connected to a resistor divider and is intended solely for dynamic voltage scaling during processor operation. This enables real-time performance/power trade-offs without requiring a full power cycle.
Does TPS650244IRHBRQ1 support independent enable control for each DC-DC converter?
Yes, TPS650244IRHBRQ1 provides dedicated active-high enable pins for each of its three DC-DC converters: EN_DCDC1 (Pin 20), EN_DCDC2 (Pin 19), and EN_DCDC3 (Pin 18). This allows precise power sequencing - such as enabling Vdd_alive first, then VDCDC3 for processor core, followed by VDCDC2 for memory and VDCDC1 for I/O - which is mandatory for Samsung ARM-based automotive processors and prevents latch-up or initialization faults.
What is the purpose of the Vdd_alive LDO in TPS650244IRHBRQ1, and what voltage does it supply?
The Vdd_alive LDO in TPS650244IRHBRQ1 provides a dedicated 1.2 V ±1% output capable of delivering 30 mA, designed to remain active even when all other regulators are disabled. It powers critical always-on circuitry such as real-time clocks, wake-up comparators, and CAN bus monitoring logic in automotive systems. Its enable pin (EN_Vdd_alive, Pin 24) allows controlled activation during system sleep states, ensuring deterministic low-power behavior.
Is TPS650244IRHBRQ1 qualified for automotive applications, and what is its temperature rating?
Yes, TPS650244IRHBRQ1 is explicitly qualified for automotive applications per AEC-Q100 Grade 3, with an operating ambient temperature range of –40°C to +85°C. This qualification includes stress testing for thermal cycling, humidity, mechanical shock, and ESD robustness. The device's thermal shutdown (160°C) and hysteresis (20°C) are calibrated to ensure safe operation in sealed automotive enclosures under worst-case solar loading conditions.
TPS650244IRHBRQ1 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
TPS650244IRHBRQ1 FAQ
1.How can I place an order for TPS650244IRHBRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650244IRHBRQ1 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 TPS650244IRHBRQ1 reliable?
The price and inventory of TPS650244IRHBRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650244IRHBRQ1 is usually 5 days.
3.What payment methods are accepted for TPS650244IRHBRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650244IRHBRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650244IRHBRQ1?
TPS650244IRHBRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650244IRHBRQ1 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 TPS650244IRHBRQ1?
For technical support, including TPS650244IRHBRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650244IRHBRQ1 requirements.
6.How does Aetrix verify that TPS650244IRHBRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS650244IRHBRQ1 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 TPS650244IRHBRQ1 meets industry standards.
7.What is the process for return or replacement of TPS650244IRHBRQ1?
All TPS650244IRHBRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS650244IRHBRQ1, 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 TPS650244IRHBRQ1 part is unused and in its original packaging.
Return procedure for TPS650244IRHBRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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