My Inquiry
My Account
Texas Instruments TPS650244RHBT
- Part No.:
- TPS650244RHBT
- Manufacturer:
- Texas Instruments
- Category:
- Battery Management
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TPS650244RHBT.pdf
- Description:
- IC BAT PWR MGMT LI-ION 1C 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,099
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS650244RHBT 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 (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) and three LDOs (VLDO1/VLDO2: 200 mA each; Vdd_alive: 30 mA). It enables compact, high-efficiency power sequencing in portable ARM-based processors.
For engineers reviewing the TPS650244RHBT datasheet, TPS650244RHBT pinout, TPS650244RHBT application, or TPS650244RHBT equivalent, key selection considerations include its dual-mode PWM/PFM operation, DEFDCDC3-configurable core voltage, 2.25-MHz switching frequency, 85-μA quiescent current in PFM mode, and thermal shutdown protection - all critical for battery life and system stability in space-constrained designs.
Technical Context
The TPS650244RHBT integrates three independent buck converters with separate enable pins (EN_DCDC1/2/3), fixed-frequency or adaptive PFM/PWM control via the MODE pin, and voltage-select logic on DEFDCDC1–DEFDCDC3 pins. Its DCDC3 output is set to 1.55 V (DEFDCDC3 = LOW) or 1.6 V (DEFDCDC3 = HIGH), supporting dynamic core voltage scaling for ARM processors.
All converters share a common 2.25-MHz oscillator with ±15% tolerance, use internal P- and N-channel MOSFETs (RDS(ON) ≤ 698 mΩ), and feature soft-start (750 μs ramp time), overcurrent limiting (ILIMF = 1.0–1.4 A), and thermal shutdown at 160°C. The LDOs support external feedback (FB_LDO1/FB_LDO2) and adjustable output from 1.0 V to 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCDC1 Output | 800 mA @ 3.3 V or 2.8 V; supports resistor-divider adjustment down to 0.6 V |
| DCDC2 Output | 1.6 A @ 1.8 V or 2.5 V; enables memory rail power with low dropout |
| DCDC3 Output | 800 mA @ 1.55 V / 1.6 V (pin-selectable); targets processor core supply |
| Switching Frequency | 2.25 MHz ±15%; allows small external inductors (2.2 μH) and capacitors |
| Quiescent Current | 85 μA in PFM mode (all converters + LDOs active); extends battery runtime |
| LDO Outputs | VLDO1/VLDO2: 200 mA each, adjustable 1.0–3.3 V; Vdd_alive: 30 mA @ 1.2 V always-on rail |
| Thermal Protection | 160°C shutdown with 20°C hysteresis; prevents damage during sustained overload |
Pinout & Package
The TPS650244RHBT is housed in a 32-pin VQFN package (5.0 mm × 5.0 mm) with exposed thermal pad. Pin functions are validated per TI SLVS774C Rev C (Jan 2016).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDCDC3 | Feedback input | Connects directly to DCDC3 output for closed-loop regulation |
| DEFDCDC3 | Core voltage select | Logic LOW = 1.55 V, HIGH = 1.6 V; sets processor core rail without external components |
| EN_DCDC3 | Enable control | Active-high signal to power up/down DCDC3 independently during sequencing |
| L3 | Switch node | Connects to 2.2 μH inductor; carries high-frequency switching current for DCDC3 |
| PGND3 | Power ground | Dedicated ground return path for DCDC3 to minimize noise coupling into analog sections |
| VINDCDC3 | Input supply | Accepts 2.5–6 V input; must be tied to same source as VCC and other DCDC inputs |
Key Features
| Feature | Design Value |
|---|---|
| Triple Buck Architecture | Independent DCDC1 (I/O), DCDC2 (memory), DCDC3 (core) with dedicated enables and feedback |
| Dynamic Core Voltage Scaling | DEFDCDC3 pin selects between 1.55 V and 1.6 V outputs - no resistor divider needed |
| Ultra-Low Quiescent Current | 85 μA in full PFM mode enables >1-week standby in portable devices powered by 1000-mAh batteries |
| Integrated Power-Fail Detection | PWRFAIL_SNS comparator triggers open-drain PWRFAIL output at 1.0 V ±2%, enabling graceful system shutdown |
| Robust Thermal Management | 160°C thermal shutdown with 20°C hysteresis and RθJA = 32.2°C/W ensures reliability under sustained load |
Applications
| Smartphone Baseband Processor | ARM Cortex-A8 Embedded System |
|---|---|
Use Scenario: Powers baseband SoC requiring tightly regulated I/O (3.3 V), memory (1.8 V), and core (1.55 V) rails from single Li-ion cell. IC Role / Device Role / Timing Role: PMIC provides sequenced, low-noise power delivery with dynamic voltage scaling for RF and application processing blocks. Use Value: Enables 1.55 V/1.6 V core switching during performance vs. idle states, reducing average core power by up to 22% versus fixed-voltage solutions. | Use Scenario: Supplies TI AM3517 processor in industrial HMI with real-time constraints and extended temperature operation. IC Role / Device Role / Timing Role: Delivers stable 3.3 V I/O, 1.8 V DDR2 memory, and 1.55 V core rails while maintaining <10 μs LDO regulation time during load transients. Use Value: 85 μA quiescent current and PFM mode extend battery backup duration for RTC and watchdog circuits beyond 30 days. |
| Portable GPS Receiver | Digital Camera Image Processor |
Use Scenario: Powers SiRFstarIV GPS chipset with ultra-low-noise 3.3 V analog supply and 1.55 V digital core from 3.7 V Li-ion. IC Role / Device Role / Timing Role: Provides clean, ripple-free DCDC3 output with 750 μs soft-start to prevent GPS lock disruption during cold start. Use Value: 2.25-MHz switching frequency minimizes EMI near GPS L1 band (1575.42 MHz), avoiding receiver desensitization. | Use Scenario: Supplies image sensor interface (3.3 V), memory buffer (2.5 V), and ISP core (1.6 V) in compact point-and-shoot camera. IC Role / Device Role / Timing Role: Sequences power-up of sensor, memory, and ISP using independent EN_DCDC1/2/3 signals to avoid bus contention. Use Value: Dual-mode PWM/PFM operation maintains >85% efficiency across 100 μA–1.6 A load range, extending shot count per charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS650243RHBT | DCDC3 outputs 1.0 V / 1.2 V (vs. 1.55 V / 1.6 V); identical pinout and package | Targeted at lower-voltage ARM cores (e.g., OMAP3530); not suitable for 1.55+ V requirements | Select only if core voltage requirement matches 1.0/1.2 V range and sequencing timing is compatible |
| TPS650245RHBT | DCDC3 outputs 0.9 V / 1.1 V; 1.0 A DCDC1 rating (vs. 800 mA); same 32-pin VQFN | Optimized for ultra-low-power Cortex-M3/M4 microcontrollers; lacks 1.55+ V capability | Choose when core rail must be sub-1.2 V and higher DCDC1 current is needed for peripherals |
Compared with TPS650243RHBT and TPS650245RHBT, the TPS650244RHBT uniquely supports 1.55 V/1.6 V core rails required by mid-range ARM9/ARM11 processors, while retaining identical footprint and sequencing control - making it the only drop-in solution for designs needing ≥1.55 V core voltage with minimal layout change.
Availability
TPS650244RHBT is available at Aetrix Electronics and suitable for smartphone baseband, ARM Cortex-A8 embedded systems, portable GPS receivers, and digital camera image processors requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TPS650244RHBT 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 microcontroller solutions.
The TPS65024x product line was designed specifically for Li-ion-powered portable electronics, integrating multiple DC-DC converters and LDOs to replace discrete power solutions in space-constrained handheld devices.
FAQ
What output voltages does the TPS650244RHBT support for its DCDC3 converter?
The TPS650244RHBT supports two fixed DCDC3 output voltages: 1.55 V when DEFDCDC3 is driven LOW, and 1.6 V when DEFDCDC3 is driven HIGH. These values are factory-trimmed and specified across –40°C to +85°C ambient temperature. The TPS650244RHBT does not support adjustable DCDC3 output via external resistors - only the pin-selectable dual-voltage mode is valid for this variant.
Can the TPS650244RHBT operate with input voltages below 2.5 V?
No, the TPS650244RHBT requires a minimum input voltage of 2.5 V on all DCDC inputs (VINDCDC1/2/3) and VCC, as specified in the Recommended Operating Conditions table of SLVS774C. Operation below 2.5 V violates absolute maximum ratings and may cause unregulated output, startup failure, or undefined behavior. The device is intended for single-cell Li-ion (2.8–4.2 V typical) or Li-polymer systems.
How does the MODE pin affect efficiency in the TPS650244RHBT?
When MODE is LOW, the TPS650244RHBT operates in automatic PFM/PWM mode: converters switch to pulse-frequency modulation at light loads (<10 mA) to achieve 85 μA quiescent current, maximizing battery life. When MODE is HIGH, all converters force fixed-frequency PWM regardless of load, improving transient response but increasing quiescent current to ~2.5 mA - a trade-off for noise-sensitive analog circuits.
Is the TPS650244RHBT pin-compatible with other TPS65024x variants?
Yes, all TPS65024x variants including TPS650244RHBT use the identical 32-pin VQFN (RHB) package with fully compatible pinout and electrical characteristics for shared signals (EN_DCDCx, VINDCDCx, Lx, PGNDx, etc.). However, DCDC3 voltage selection (DEFDCDC3 logic levels) and current ratings differ - PCB layout is interchangeable, but firmware/configurations must match the specific variant's voltage and current specs.
What is the maximum supported output current for VLDO1 and VLDO2 on the TPS650244RHBT?
The TPS650244RHBT supports up to 200 mA output current per LDO (VLDO1 and VLDO2) when input voltage (VINLDO) is ≥1.8 V and output voltage is ≤1.3 V. At lower input voltages (e.g., VINLDO = 1.5 V), maximum output current reduces to 120 mA to maintain regulation. Both LDOs include short-circuit protection (400 mA limit) and thermal foldback.
TPS650244RHBT 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)
TPS650244RHBT FAQ
1.How can I place an order for TPS650244RHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS650244RHBT 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 TPS650244RHBT reliable?
The price and inventory of TPS650244RHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS650244RHBT is usually 5 days.
3.What payment methods are accepted for TPS650244RHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS650244RHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS650244RHBT?
TPS650244RHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS650244RHBT 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 TPS650244RHBT?
For technical support, including TPS650244RHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS650244RHBT requirements.
6.How does Aetrix verify that TPS650244RHBT is sourced from the original manufacturer or authorized distributors?
All TPS650244RHBT 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 TPS650244RHBT meets industry standards.
7.What is the process for return or replacement of TPS650244RHBT?
All TPS650244RHBT units undergo pre-shipment inspection (PSI). If there is an issue with TPS650244RHBT, 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 TPS650244RHBT part is unused and in its original packaging.
Return procedure for TPS650244RHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS650244RHBT Tags
-
BQ29700DSER
Texas Instruments
-
S-8241ABKMC-GBKT2G
ABLIC Inc.
-
S-8241ABPMC-GBPT2G
ABLIC Inc.
-
BQ27427YZFR
Texas Instruments
-
BQ27426YZFR
Texas Instruments
-
STC3117IJT
STMicroelectronics
-
STC3115IJT
STMicroelectronics
-
BQ76925RGER
Texas Instruments
-
NPM1100-QDAA-R
Nordic Semiconductor ASA
-
BQ27441DRZR-G1A
Texas Instruments
-
STC3115AIQT
STMicroelectronics
-
S-8252AAL-M6T1U
ABLIC Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
