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Texas Instruments TPS65290BMRHFT
- Part No.:
- TPS65290BMRHFT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65290BMRHFT.pdf
- Description:
- IC REG CONV ENERGY 3OUT 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,843
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Product details
Overview
TPS65290BMRHFT 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, eight configurable power distribution switches, and a factory-configured 30-mA BuckMINI bias supply with 300-nA quiescent current. It operates from 2.2 V to 5 V input and supports I²C/SPI serial control for energy harvesting and battery-powered flow meters, handheld industrial sensors, and long-term data-acquisition systems.
For engineers reviewing the TPS65290BMRHFT datasheet, TPS65290BMRHFT pinout, TPS65290BMRHFT application, or TPS65290BMRHFT equivalent, key selection criteria include its 30-mA BuckMINI always-on rail, 500-mA buck-boost output with PFM/PWM mode, 24-pin QFN (RHF) package, integrated recovery comparator, and support for automatic power path selection between battery and BB output.
Technical Context
The TPS65290BMRHFT implements a dual-mode buck-boost converter with selectable PFM/PWM operation and forced PWM option, enabling high efficiency across microamp-to-hundred-mA load ranges. Its BuckMINI subsystem is a hysteretic 30-mA DC/DC converter with 33 µH inductor and 1 µF output capacitor, factory configured for 2.2 V output and optimized for ultra-low-IQ sleep-mode microcontroller biasing.
Control logic integrates an I²C/SPI interface (factory-selected), GPIO-controlled enable pins (CE, BB_EN), interrupt management (INT), and a programmable input voltage recovery comparator with 8-step rising/falling thresholds (1.7–3.1 V). All eight power switches are independently controllable via register or pin, supporting flexible power routing including BB→LDO back-to-back connection and VMAX analog multiplexing.
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 (200 mV steps), 500 mA max - programmable output with ±3% accuracy in PWM mode; sustains operation down to 1.8 V input after startup. |
| LDO Output | 1.0–4.0 V (100 mV steps), 150 mA max - fixed 2.8 V default; ±4% DC accuracy; 300 mV dropout at full load. |
| BuckMINI Output | 1.8–3.3 V (100 mV steps), 30 mA max - factory-set to 2.2 V; 300 nA quiescent current; requires external 33 µH inductor and 1 µF ceramic capacitor. |
| Always-On Quiescent Current | 300 nA - enables >10-year battery life in deep-sleep microcontroller applications with 10 µA average system load. |
| Power Switch RON | PWR_BB1: 100 mΩ; PWR_LDO1: 300 mΩ; PWR_VMAX: 600 mΩ - enables efficient load switching with minimal voltage drop and thermal rise. |
| Interface | Factory-configured SPI or I²C - SPI selected for lower active current; includes internal pull-up/pull-down resistors and interrupt masking capability. |
Pinout & Package
TPS65290BMRHFT is housed in a 24-pin RHF (QFN) package with exposed thermal pad, measuring 4 mm × 4 mm × 0.8 mm, compatible with standard reflow profiles and requiring AGND/PGND/power-pad connection per TI layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Battery input supply | Main system input (2.2–5 V); powers all blocks except BuckMINI when enabled. |
| BB_VIN | Buck-boost input | Dedicated input for buck-boost stage; decoupled separately for optimal transient response. |
| BB_OUT | Buck-boost output | Main regulated rail (1.0–5.0 V); supplies PWR_BB1/PWR_BB2 and feeds VMAX multiplexer. |
| VMAX | Analog multiplexer output | Maximum of VBAT or BB_OUT; used for automatic power-path selection without host intervention. |
| LDO_IN / LDO_OUT | LDO input/output | 150-mA LDO with 2.2 µF input and 2 µF output ceramic decoupling; supports 1.0–4.0 V programmable output. |
| VMICRO | BuckMINI output | 30-mA always-on bias rail (factory-set to 2.2 V); connects directly to microcontroller VDD for deep-sleep operation. |
| CE | Chip enable | Active-high control: high enables SPI/I²C, switches, and BB; low enables deep-sleep with VMICRO active. |
| BB_EN | Buck-boost enable | Hardware override for BB converter; independent of CE and serial interface state. |
| INT | Interrupt output | Push-pull active-low signal indicating fault, comparator trip, or register event; maskable via SPI/I²C. |
| MOSI/SDA, MISO, CS, SCL/SCK | Serial interface | SPI (CS, MOSI, MISO, SCK) or I²C (SDA, SCL) - factory-configured; no external pull resistors required. |
| PWR_BB1, PWR_BB2, PWR_LDO1, PWR_LDO2, PWR_VMAX, PWR_VIN | Power distribution switches | Eight independent NMOS/PMOS switches (RON = 100–1000 mΩ); each controlled by register or GPIO for flexible rail routing. |
| AGND / PGND | Analog & power ground | Separate ground pins require low-inductance connection to PCB ground plane and thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-rail power architecture | Integrates buck-boost, LDO, BuckMINI, and 8 switches - eliminates need for 5+ discrete regulators in compact sensor nodes. |
| Ultra-low-IQ always-on bias | 300 nA quiescent current for BuckMINI - enables >10-year coin-cell lifetime in wake-on-event systems. |
| Automatic power-path selection | VMAX pin outputs highest of BB_OUT or VIN - enables seamless switchover during battery depletion without firmware intervention. |
| Programmable input voltage monitor | Recovery comparator with 8-step rising/falling thresholds (1.7–3.1 V) - allows autonomous power block enable/disable in energy harvesting. |
| Integrated passive components | Internal resistive dividers, I²C pull-ups, SPI pull-downs, and compensation networks - reduces BOM count by ≥7 passive parts. |
| Thermal protection | Two-tier shutdown: 141°C for buck-boost stage, 160°C for full IC - prevents thermal runaway in sealed enclosures. |
Applications
| Flow Meter Power Management | Handheld Industrial Sensor Node |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter operating for 10+ years on a single CR2032 cell, sampling every 5 minutes and transmitting via LoRaWAN. IC Role / Device Role / Timing Role: TPS65290BMRHFT provides always-on 2.2 V BuckMINI bias to MCU in deep sleep, wakes BB converter only during measurement, and routes BB output to transceiver via PWR_BB1 switch. Use Value: 300 nA BuckMINI IQ extends battery life beyond 10 years; VMAX auto-select ensures stable 3.3 V rail even as battery drops from 3.6 V to 2.4 V. |
Use Scenario: Portable gas detector with CO, NO₂, and humidity sensors, powered by rechargeable LiPo and requiring <10 µA standby current. IC Role / Device Role / Timing Role: TPS65290BMRHFT delivers 2.8 V LDO power to analog front-end, 4.5 V BB output to display backlight, and uses PWR_VIN switch to isolate battery during charging. Use Value: Integrated 8-switch matrix replaces 4 discrete load switches; PFM/PWM BB converter achieves >85% efficiency at 100 µA load, minimizing self-heating. |
| Energy Harvesting Wireless Node | Fitness Tracker Power System |
|
Use Scenario: Solar-powered soil moisture sensor using small PV cell (<100 µW avg), storing energy in supercapacitor and powering BLE transmission every hour. IC Role / Device Role / Timing Role: TPS65290BMRHFT monitors input voltage via recovery comparator, enables BB converter only when capacitor reaches 2.5 V, and powers MCU via VMICRO while disabling non-essential rails. Use Value: Programmable comparator thresholds (1.7–3.1 V) allow precise harvest-start/stop control; zero external passives reduce leakage paths in µW-scale systems. |
Use Scenario: Wearable heart-rate monitor with optical sensor, accelerometer, and Bluetooth LE, requiring sub-µA sleep current and fast wake-up response. IC Role / Device Role / Timing Role: TPS65290BMRHFT supplies 1.8 V to MCU core via LDO, 3.3 V to sensor array via PWR_BB2, and uses INT pin to wake host on motion detection event. Use Value: 200 µs LDO startup time and 330 µs BB startup time meet BLE connection latency requirements; 24-pin QFN fits 8 mm × 8 mm wearable PCB area budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65290LMRHFT | Features 10-mA LDOMINI LDO (400 nA IQ) instead of 30-mA BuckMINI; same pinout and interface. | Lower output current but tighter regulation and no switching ripple - preferred for noise-sensitive analog biasing. | Select when microcontroller sleep current ≤5 mA and low-noise 2.2 V bias is required over higher current capability. |
| TPS65290ZBRHFT | Uses zero-drop adjustable bias (100 nA IQ, 10 mA max) with unregulated VIN−X output - no inductor or capacitor needed. | No switching noise or external components; output voltage tracks battery with fixed drop - suited for simple MCU VDD only. | Select when absolute minimum BOM count and zero EMI are critical, and regulated output voltage is not required. |
Compared with TPS65290LMRHFT and TPS65290ZBRHFT, the TPS65290BMRHFT offers the highest always-on output current (30 mA) at ultra-low IQ (300 nA), making it optimal for systems needing both extended battery life and sufficient drive capability for RF modules or multiple peripherals in sleep mode.
Availability
TPS65290BMRHFT is available at Aetrix Electronics and suitable for flow meter design, handheld industrial sensor development, and energy harvesting wireless node production requiring stable component supply, long-lifecycle assurance, and consistent parametric performance across temperature.
Supply support for TPS65290BMRHFT 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 expertise in ultra-low-power system solutions.
The TPS65290 product line was designed specifically for energy-constrained, battery- and harvester-powered applications demanding multi-rail flexibility, nanoscale quiescent current, and autonomous power-path management without host processor involvement.
FAQ
What is the factory-configured interface mode for TPS65290BMRHFT?
The TPS65290BMRHFT is factory-configured for SPI interface operation, as indicated by the "BM" suffix and TI documentation. This configuration uses internal pull-down resistors on MOSI/MISO/CS/SCK lines and avoids the continuous current draw associated with I²C pull-up resistors, optimizing active-mode efficiency. The interface cannot be changed post-manufacture.
Does TPS65290BMRHFT support hardware-based automatic power-path selection?
Yes, the TPS65290BMRHFT supports hardware-based automatic power-path selection via the VMAX pin, which outputs the higher of VIN (battery) or BB_OUT (buck-boost output) without software intervention. This feature enables seamless transition between battery and harvested power sources in energy harvesting systems, and is implemented entirely in analog circuitry within the IC.
What external components are required for the BuckMINI output on TPS65290BMRHFT?
The BuckMINI output on TPS65290BMRHFT requires two external components: a 33 µH shielded inductor (0603 size) and a 1 µF ceramic output capacitor. No feedback resistor divider, compensation network, or input capacitor is needed - the BuckMINI is a self-contained hysteretic converter with internal sensing and control, as specified in the TI datasheet SLVSBY5A.
How does the recovery comparator function in TPS65290BMRHFT?
The recovery comparator in TPS65290BMRHFT monitors VIN and asserts events based on user-programmable rising and falling thresholds (1.7–3.1 V in 0.1 V steps). It triggers INT output and can autonomously enable/disable power blocks - for example, turning on the buck-boost converter only when input voltage exceeds 2.5 V, reducing unnecessary consumption in intermittent energy harvesting scenarios.
What is the maximum continuous output current of the buck-boost converter in TPS65290BMRHFT?
The buck-boost converter in TPS65290BMRHFT delivers up to 500 mA continuous output current under typical conditions (TA = 25°C, VIN = 3.6 V). Derating applies above 85°C ambient or with poor PCB thermal design; the device includes thermal shutdown at 141°C for the buck-boost stage and 160°C for the full IC to ensure reliability.
TPS65290BMRHFT 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)
TPS65290BMRHFT FAQ
1.How can I place an order for TPS65290BMRHFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65290BMRHFT 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 TPS65290BMRHFT reliable?
The price and inventory of TPS65290BMRHFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65290BMRHFT is usually 5 days.
3.What payment methods are accepted for TPS65290BMRHFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65290BMRHFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65290BMRHFT?
TPS65290BMRHFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65290BMRHFT 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 TPS65290BMRHFT?
For technical support, including TPS65290BMRHFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65290BMRHFT requirements.
6.How does Aetrix verify that TPS65290BMRHFT is sourced from the original manufacturer or authorized distributors?
All TPS65290BMRHFT 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 TPS65290BMRHFT meets industry standards.
7.What is the process for return or replacement of TPS65290BMRHFT?
All TPS65290BMRHFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65290BMRHFT, 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 TPS65290BMRHFT part is unused and in its original packaging.
Return procedure for TPS65290BMRHFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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