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Texas Instruments TPS65290LMRHFR
- Part No.:
- TPS65290LMRHFR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65290LMRHFR.pdf
- Description:
- IC REG CONV ENERGY 3OUT 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
TPS65290LMRHFR from Texas Instruments is a low-quiescent-current, multi-mode power management IC (PMIC) integrating a 500-mA buck-boost converter, a 150-mA LDO, an always-on 10-mA LDOMINI bias supply (400-nA IQ), eight configurable power distribution switches, and factory-selectable I²C/SPI interface. It operates from 2.2 V to 5 V input and supports energy harvesting, battery-powered flow meters, and industrial data-acquisition systems requiring ultra-low sleep current and dynamic rail control.
For engineers reviewing the TPS65290LMRHFR datasheet, TPS65290LMRHFR pinout, TPS65290LMRHFR application, or TPS65290LMRHFR equivalent, key selection considerations include its LDOMINI microcontroller bias configuration (1.8–3.3 V, ±5% accuracy), 24-pin QFN RHF package with thermal pad, integrated recovery comparator, and dual-control capability via BB_EN pin or serial interface.
Technical Context
The TPS65290LMRHFR implements a PFM/PWM hybrid buck-boost topology with forced-PWM option, enabling high efficiency across load ranges from 100 nA to 500 mA. Its LDOMINI output is factory-configured as a regulated 10-mA, low-IQ LDO (400 nA quiescent current) with 16 voltage steps (1.8–3.3 V, 200-mV increments) and ±5% DC accuracy at 25°C.
Control flexibility is achieved through dual-path enable logic: CE pin for deep-sleep entry (enabling VMICRO while disabling I²C/SPI and switches), and BB_EN for standalone buck-boost activation. The device integrates internal resistive dividers, pull-up/pull-down resistors for I²C/SPI, boost/buck compensation, and interrupt pull-up - eliminating external passive components beyond ceramic capacitors and inductors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2 V to 5 V - supports single-cell Li-ion, LiFePO₄, and energy harvesting sources without external regulation. |
| Buck-Boost Output | 1.0–5.0 V (29 × 100-mV steps), ±3% accuracy - programmable rail for BB_OUT, VMAX, and switch inputs. |
| LDO Output (LDOMINI) | 1.8–3.3 V (16 × 200-mV steps), ±5% accuracy, 10-mA max - factory-set low-IQ bias supply for MCU sleep mode. |
| Quiescent Current (Always-On) | 400 nA - enables >10-year battery life in ultra-low-power sensor nodes with 200-mAh coin cells. |
| Power Switches | 8 configurable NMOS/PMOS switches (e.g., PWR_BB1: 100 mΩ, PWR_LDO1: 300 mΩ) - enables dynamic power routing without external FETs. |
| Interface | Factory-selectable I²C or SPI - eliminates BOM cost of level shifters; SPI reduces bus leakage vs. I²C open-drain. |
| Operating Temp | −40°C to +125°C - qualified for industrial and outdoor metering applications with extended thermal range. |
Pinout & Package
TPS65290LMRHFR uses a 24-pin RHF (QFN) package with exposed thermal pad (5 mm × 5 mm, 0.5-mm pitch). The pad must be soldered to AGND/PGND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Battery input | Main system supply input (2.2–5 V); powers all blocks except VMICRO during deep sleep. |
| CE | Chip enable | Active-high: enables I²C/SPI, switches, and buck-boost; low enables VMICRO-only deep-sleep mode. |
| BB_EN | Buck-boost enable | Direct hardware control for standalone BB operation - bypasses serial interface for fast wake-up. |
| VMICRO | Microcontroller bias output | LDOMINI-regulated output (1.8–3.3 V); powers MCU core in sleep mode with 400-nA IQ. |
| BB_OUT | Buck-boost output | Main regulated rail (1–5 V); feeds PWR_BB1/PWR_BB2 switches and VMAX multiplexer. |
| VMAX | Max voltage selector output | Auto-selects higher of VBAT or BB_OUT - enables seamless source switchover without software intervention. |
| LDO_OUT | LDO output | 2.8-V default (±4%), 150-mA max - powers peripherals requiring low-noise, stable voltage. |
| INT | Interrupt output | Push-pull active-low signal indicating fault conditions (UVLO, thermal shutdown, comparator events). |
| MOSI/SDA | Serial data input | Shared pin for SPI MOSI or I²C SDA - interface mode fixed at factory; no runtime switching. |
| SCL/SCK | Serial clock | Shared pin for SPI SCK or I²C SCL - determines communication protocol alongside MOSI/SDA and CS. |
| CS | SPI chip select | Active-high SPI enable; unused in I²C mode (internally pulled high). |
| PWR_VIN | Battery-powered switch | 1-Ω NMOS switch sourcing from VIN - isolates battery during BB/LDO faults or deep sleep. |
| PWR_BB1 | BB-powered switch | 100-mΩ PMOS switch sourcing from BB_OUT - delivers high-efficiency power to critical loads. |
| PWR_LDO1 | LDO-powered switch | 300-mΩ PMOS switch sourcing from LDO_OUT - enables independent control of noise-sensitive analog rails. |
| AGND / PGND | Analog & power ground | Separate ground pins require low-impedance connection to thermal pad and PCB GND plane. |
Key Features
| Feature | Design Value |
|---|---|
| LDOMINI Always-On Bias | 10-mA, 400-nA IQ regulated LDO (1.8–3.3 V) - extends battery life in sensor nodes by minimizing sleep current. |
| Recovery Comparator | Configurable rising/falling thresholds (1.7–3.1 V, 100-mV steps) - autonomously reconnects power blocks when input recovers. |
| Integrated Power Routing | 8 programmable switches with on-resistances from 100 mΩ to 1 Ω - replaces 8 discrete load switches and saves >15 mm² PCB area. |
| Zero External Components | On-die compensation, pull-ups/pull-downs, and dividers - only requires ceramic caps and inductors for full solution. |
| Thermal Protection | Two-tier shutdown: buck-boost local (141°C trip) and IC-wide (160°C trip) - prevents damage during overload or poor heatsinking. |
Applications
| Flow Meter Power Management | Wireless Sensor Node |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter operating for 10+ years on a single CR2032 cell, sampling every 5 minutes. IC Role / Device Role / Timing Role: TPS65290LMRHFR provides VMICRO bias during 99.9% sleep time, wakes BB/LDO on demand, and routes power to ADC, transducer driver, and RF module. Use Value: 400-nA LDOMINI IQ enables >10-year runtime; VMAX auto-selection ensures uninterrupted operation during battery depletion or BB startup delay. |
Use Scenario: LoRaWAN environmental sensor node harvesting ambient light, with intermittent 100-ms transmit bursts. IC Role / Device Role / Timing Role: TPS65290LMRHFR manages energy buffer (supercap), regulates BB_OUT for radio, supplies LDO for precision sensor, and controls PWR_BB_LDO switch to boost efficiency. Use Value: PFM/PWM buck-boost achieves >90% efficiency at 100 μA; recovery comparator disconnects loads during low-light periods to preserve charge. |
| Industrial Handheld Terminal | Smart Utility Meter |
|
Use Scenario: Rugged handheld used for field asset inspection, powered by removable Li-ion pack with 200-cycle lifespan. IC Role / Device Role / Timing Role: TPS65290LMRHFR delivers BB_OUT (3.3 V) to processor, LDO_OUT (2.8 V) to display driver, and PWR_VIN to USB PHY - all under I²C control. Use Value: Factory-configured SPI interface minimizes standby leakage; 8 switches isolate failed subsystems without firmware intervention. |
Use Scenario: AMI smart meter with dual power sources (mains + backup Li-SOCl₂ battery), requiring fail-safe switchover and tamper detection. IC Role / Device Role / Timing Role: TPS65290LMRHFR monitors VBAT via recovery comparator, asserts INT on brownout, and enables PWR_VMAX to maintain RTC and secure memory during mains loss. Use Value: VMAX output guarantees continuous 3.3-V supply from higher-of-two sources; INT pin triggers immediate firmware save before power collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65290ZBRHFR | Zero-leakage adjustable bias (10-mA, 100-nA IQ, unregulated VIN–1.4 V drop) instead of LDOMINI LDO. | Used where absolute minimum sleep current is critical and output voltage regulation is secondary (e.g., RTC backup). | Select ZB variant if system requires <100-nA bias and can tolerate unregulated output; LM provides tighter voltage control for MCU cores. |
| TPS65290BMRHFR | Integrates BuckMINI hysteretic converter (30-mA, 300-nA IQ, 5-Hz switching) instead of LDOMINI LDO. | Preferred for higher-current always-on rails (e.g., 30-mA MCU active mode) where ripple tolerance exists. | Select BM variant if VMICRO load exceeds 10 mA or system accepts ~5% output ripple; LM offers lower noise for sensitive analog circuits. |
Compared with TPS65290ZBRHFR and TPS65290BMRHFR, the TPS65290LMRHFR delivers regulated 1.8–3.3 V bias with ±5% accuracy and 400-nA IQ - striking optimal balance between ultra-low sleep current, voltage stability, and noise performance for microcontroller-based edge devices.
Availability
TPS65290LMRHFR is available at Aetrix Electronics and suitable for battery-powered flow meters, wireless sensor networks, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS65290LMRHFR 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 50 years of innovation in energy-efficient IC design.
The TPS65290 product line was engineered specifically for ultra-low-power, battery- and energy-harvesting–powered systems - delivering integrated buck-boost, LDO, bias, and power-switch functionality in a single 24-pin QFN package.
FAQ
What is the factory-configured interface mode for TPS65290LMRHFR?
The TPS65290LMRHFR is factory-configured for I²C interface operation. Pins MOSI/SDA, SCL/SCK, and CS are assigned to I²C SDA, SCL, and internal pull-up (no external pull-up required), respectively. SPI mode is not enabled on this variant - interface selection is fixed at manufacturing and cannot be changed in-circuit.
How does the LDOMINI bias supply in TPS65290LMRHFR differ from the standard LDO?
The LDOMINI supply in TPS65290LMRHFR is a dedicated 10-mA, low-IQ LDO with 400-nA quiescent current, factory-set to output 1.8–3.3 V in 200-mV steps. Unlike the main 150-mA LDO (default 2.8 V), LDOMINI is optimized for microcontroller sleep mode - it remains active during CE-low deep-sleep and features tighter load regulation (±5%) at light loads.
Can TPS65290LMRHFR operate without a serial interface connection?
Yes. TPS65290LMRHFR supports fully standalone operation using hardware control pins: BB_EN enables the buck-boost converter directly, CE selects deep-sleep (VMICRO only) or active mode, and GPIO pins configure switch behavior. Serial interface is optional for advanced configuration - all critical functions remain operational without I²C wiring.
What is the purpose of the VMAX pin on TPS65290LMRHFR?
The VMAX pin on TPS65290LMRHFR outputs the higher voltage between VIN (battery) and BB_OUT (buck-boost output), enabling automatic power source selection. It drives PWR_VMAX and other switches to maintain uninterrupted supply to critical circuits (e.g., RTC, secure memory) during battery depletion or BB startup delay - no firmware or external diode required.
Does TPS65290LMRHFR include thermal protection?
Yes. TPS65290LMRHFR incorporates dual thermal protection: localized buck-boost shutdown at 141°C (12°C hysteresis) and full-IC shutdown at 160°C (20°C hysteresis). Both mechanisms disable power stages and assert the INT pin, allowing firmware to log thermal events or initiate derating before permanent damage occurs.
TPS65290LMRHFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, Energy Harvesting
- Voltage - Input:
- 2.2V ~ 5V
- Number of Outputs:
- 3
- Voltage - Output:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-VQFN (5x4)
TPS65290LMRHFR FAQ
1.How can I place an order for TPS65290LMRHFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65290LMRHFR 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 TPS65290LMRHFR reliable?
The price and inventory of TPS65290LMRHFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65290LMRHFR is usually 5 days.
3.What payment methods are accepted for TPS65290LMRHFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65290LMRHFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65290LMRHFR?
TPS65290LMRHFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65290LMRHFR 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 TPS65290LMRHFR?
For technical support, including TPS65290LMRHFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65290LMRHFR requirements.
6.How does Aetrix verify that TPS65290LMRHFR is sourced from the original manufacturer or authorized distributors?
All TPS65290LMRHFR 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 TPS65290LMRHFR meets industry standards.
7.What is the process for return or replacement of TPS65290LMRHFR?
All TPS65290LMRHFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65290LMRHFR, 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 TPS65290LMRHFR part is unused and in its original packaging.
Return procedure for TPS65290LMRHFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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