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Texas Instruments TPS65290LMRHFT
- Part No.:
- TPS65290LMRHFT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65290LMRHFT.pdf
- Description:
- IC REG CONV ENERGY 3OUT 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,604
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Product details
Overview
TPS65290LMRHFT 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 rail with 400-nA IQQ, eight configurable power distribution switches, and factory-selectable I²C/SPI interface. It operates from 2.2 V to 5 V input and targets energy harvesting and battery-powered systems requiring ultra-low sleep current and dynamic rail selection.
For engineers reviewing the TPS65290LMRHFT datasheet, TPS65290LMRHFT pinout, TPS65290LMRHFT application, or TPS65290LMRHFT equivalent, key selection criteria include its LDOMINI microcontroller bias supply (1.8–3.3 V, ±5% accuracy), PFM/PWM buck-boost efficiency down to μA loads, integrated recovery comparator, and 24-pin QFN (RHF) package with thermal pad.
Technical Context
The TPS65290LMRHFT implements a dual-mode buck-boost topology supporting both standalone operation (via BB_EN) and serial bus control (I²C or SPI), with programmable PFM/PWM transition and forced-PWM mode for noise-sensitive applications. Its LDOMINI output is a regulated low-IQQ LDO factory-configured for 10 mA max load and 400-nA quiescent current.
Eight independent power switches-including PWR_BB1, PWR_LDO1, and PWR_VMAX-enable flexible system-level power routing between BB_OUT, LDO_OUT, VMAX, and VIN. The device integrates a voltage recovery comparator with 8-step selectable rising/falling thresholds (1.7–3.1 V) and supports automatic power path arbitration via VMAX analog multiplexer.
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 in 200-mV steps, ±3% accuracy - digitally adjustable rail for variable system loads |
| LDO Output (LDOMINI) | 1.8–3.3 V in 200-mV steps, ±5% accuracy, 10 mA max - factory-set low-IQQ bias for MCU sleep mode |
| Quiescent Current (Always-On) | 400 nA - enables multi-year battery life in wireless sensor nodes and flow meters |
| Switch On-Resistance | PWR_BB1: 100 mΩ; PWR_LDO1: 300 mΩ - low-loss power routing with minimal voltage drop under load |
| Interface | Factory-selectable I²C or SPI - eliminates need for external level shifters or pull-up resistors |
| Ambient Temp Range | –40°C to +85°C - qualified for industrial and outdoor energy harvesting deployments |
Pinout & Package
TPS65290LMRHFT is housed in a 24-pin RHF (4 mm × 4 mm, 0.5 mm pitch) QFN package with exposed thermal pad. The package supports high-density PCB layouts and efficient thermal dissipation in compact battery-powered systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Battery input supply | Main system input; powers all internal blocks when ≥2.2 V |
| BB_EN | Buck-boost enable input | Hardware-controlled start/stop of BB converter; active-high |
| CE | Chip enable / deep-sleep control | Low = deep sleep + VMICRO enabled; high = full functionality |
| VMICRO | LDOMINI regulated output | 10-mA, 400-nA IQQ bias rail for microcontroller core/sleep domain |
| BB_OUT | Buck-boost output | Main regulated rail; feeds PWR_BB1/PWR_BB2 switches and VMAX mux |
| VMAX | Analog multiplexer output | Maximum of BB_OUT or VIN; used for automatic power-path selection |
| LDO_OUT | LDO regulated output | 150-mA, 2.8-V default rail; supplies PWR_LDO1/PWR_LDO2 switches |
| MOSI/SDA | Serial data input (SPI/I²C) | Shared pin; function determined by factory configuration |
| INT | Interrupt output | Push-pull, active-low signal for fault or status reporting |
| PGND/AGND | Power/analog ground | Internally connected; must be tied to thermal pad and PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| LDOMINI Always-On Bias Rail | 10-mA, 400-nA IQQ regulated LDO (1.8–3.3 V) - extends battery life in MCU sleep states without compromising wake-up speed |
| Programmable Recovery Comparator | 8-step rising/falling threshold (1.7–3.1 V) - enables autonomous reconnection to energy harvesters after voltage sag |
| Integrated Power Switches | Eight MOSFET-based switches (100–1000 mΩ RON) - eliminates discrete FETs and gate drivers for rail selection and load isolation |
| Factory-Selectable Serial Interface | I²C or SPI configured at wafer level - reduces BOM count and avoids runtime interface conflicts |
| Thermal Protection | Two-tier shutdown: 141°C (buck-boost), 160°C (whole IC) with hysteresis - prevents damage during sustained overload |
Applications
| Wireless Sensor Node | Industrial Flow Meter |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter operating for >5 years on two AA cells, sampling every 15 minutes. IC Role / Device Role / Timing Role: TPS65290LMRHFT manages power sequencing, provides VMICRO bias during deep sleep, and enables BB converter only during measurement bursts. Use Value: 400-nA LDOMINI IQQ and programmable UVLO prevent premature battery depletion; VMAX auto-select ensures stable MCU supply whether battery or harvester is dominant. |
Use Scenario: Explosion-proof gas flow transmitter using piezoelectric sensors and LoRaWAN radio, deployed in remote oil fields. IC Role / Device Role / Timing Role: TPS65290LMRHFT delivers regulated 3.3-V rail to MCU and sensor, routes BB_OUT to radio during transmission, and isolates loads via PWR_BB1/PWR_BB2 switches. Use Value: Integrated 100-mΩ PWR_BB1 switch minimizes voltage drop during 500-mA radio transmit pulses; thermal shutdown protects against ambient temperature extremes. |
| Energy Harvesting Gateway | Portable Medical Monitor |
|
Use Scenario: Solar-powered gateway aggregating BLE sensor data, storing logs locally, and uploading via cellular modem. IC Role / Device Role / Timing Role: TPS65290LMRHFT uses recovery comparator to reconnect solar charger when light returns, powers MCU from VMICRO in sleep, and enables BB converter only for modem activation. Use Value: 8-step comparator threshold allows precise matching to solar panel IV curve; zero external components needed for I²C pull-ups reduce leakage paths. |
Use Scenario: Handheld ECG monitor powered by rechargeable coin cell, requiring FDA-compliant low-power design and rapid wake-up. IC Role / Device Role / Timing Role: TPS65290LMRHFT supplies VMICRO to MCU in standby, powers analog front-end from LDO_OUT, and activates BB converter only during signal acquisition. Use Value: ±5% LDOMINI accuracy ensures consistent MCU clock stability across temperature; fast 200-μs LDO startup meets clinical response time requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65290ZBRHFT | Zero-leakage adjustable bias (10 mA, 100 nA IQQ), unregulated VIN–1.4 V output | Better for ultra-deep-sleep MCU domains where regulation is unnecessary and lowest possible IQQ is critical | Select ZB variant if system requires <100 nA always-on current and can tolerate unregulated bias voltage |
| TPS65290BMRHFT | BuckMINI internal converter (30 mA, 300 nA IQQ), requires external 33-μH inductor | Suitable when higher bias current is needed and board space allows discrete inductor placement | Select BM variant if 30-mA VMICRO drive capability is required and inductor footprint is acceptable |
Compared with TPS65290ZBRHFT and TPS65290BMRHFT, the TPS65290LMRHFT offers the optimal balance of regulated output accuracy (±5%), moderate bias current (10 mA), and ultra-low quiescent consumption (400 nA), making it ideal for applications needing reliable MCU wake-up behavior without external magnetics.
Availability
TPS65290LMRHFT is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial flow meters, energy harvesting gateways, and portable medical monitors requiring stable component supply across long product lifecycles.
Supply support for TPS65290LMRHFT 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS65290 product line is designed specifically for ultra-low-power, battery- and energy-harvesting–powered systems, integrating multiple power rails, intelligent switching, and adaptive control in a single compact package.
FAQ
What is the factory-configured interface mode for TPS65290LMRHFT?
The TPS65290LMRHFT is factory-configured for I²C interface operation. Pins MOSI/SDA, SCL/SCK, and CS function as I²C data, clock, and chip select respectively. Internal 10-kΩ pull-up resistors eliminate need for external components, and the interface supports standard-mode (100 kHz) and fast-mode (400 kHz) speeds per TI SLVSBY5A datasheet.
How does the LDOMINI output of TPS65290LMRHFT differ from the main LDO?
The LDOMINI output (VMICRO) in TPS65290LMRHFT is a dedicated 10-mA, 400-nA IQQ low-dropout regulator optimized for microcontroller bias during deep sleep. Unlike the main 150-mA LDO (LDO_OUT), LDOMINI features tighter load regulation (±5% up to 10 mA), lower quiescent current, and factory-programmed voltage range (1.8–3.3 V in 200-mV steps), but is not intended for high-current system rails.
Can TPS65290LMRHFT operate without external inductors or capacitors?
No. TPS65290LMRHFT requires external components for core functionality: a 3.3-μH inductor and two 4.7-μF output capacitors for the buck-boost converter, a 2.2-μF capacitor on LDO_IN, and a 2-μF capacitor on LDO_OUT. However, it integrates internal resistive dividers, compensation networks, and I²C pull-up resistors - reducing total BOM count by up to seven passive components versus discrete solutions.
What is the role of the VMAX pin in TPS65290LMRHFT?
The VMAX pin in TPS65290LMRHFT outputs the highest voltage among VIN and BB_OUT, acting as an analog power-path multiplexer. It enables automatic selection of the strongest available source for downstream circuits (e.g., MCU VDD), eliminating need for external diode-ORing or controller logic. VMAX is decoupled with a 1-μF ceramic capacitor and supports three configurations: MAX(VIN, BB_OUT), VIN-only, or MAX minus diode drop.
Does TPS65290LMRHFT support hardware-based power sequencing?
Yes. TPS65290LMRHFT supports hardware sequencing via CE (chip enable) and BB_EN pins. Driving CE low forces deep-sleep mode while enabling VMICRO, allowing MCU to retain state; asserting BB_EN high independently starts the buck-boost converter. This enables deterministic, glitch-free power-up of subsystems without firmware intervention - critical for fail-safe industrial and medical devices.
TPS65290LMRHFT 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)
TPS65290LMRHFT FAQ
1.How can I place an order for TPS65290LMRHFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65290LMRHFT 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 TPS65290LMRHFT reliable?
The price and inventory of TPS65290LMRHFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65290LMRHFT is usually 5 days.
3.What payment methods are accepted for TPS65290LMRHFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65290LMRHFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65290LMRHFT?
TPS65290LMRHFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65290LMRHFT 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 TPS65290LMRHFT?
For technical support, including TPS65290LMRHFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65290LMRHFT requirements.
6.How does Aetrix verify that TPS65290LMRHFT is sourced from the original manufacturer or authorized distributors?
All TPS65290LMRHFT 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 TPS65290LMRHFT meets industry standards.
7.What is the process for return or replacement of TPS65290LMRHFT?
All TPS65290LMRHFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65290LMRHFT, 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 TPS65290LMRHFT part is unused and in its original packaging.
Return procedure for TPS65290LMRHFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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