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Texas Instruments TPS65290ZBRHFT
- Part No.:
- TPS65290ZBRHFT
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65290ZBRHFT.pdf
- Description:
- IC REG CONV ENERGY 3OUT 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
TPS65290ZBRHFT 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 microcontroller bias supply (Zero Leak Adjustable Bias variant), 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, flow metering, and battery-powered industrial sensors requiring ultra-low sleep current and dynamic rail control.
For engineers reviewing the TPS65290ZBRHFT datasheet, TPS65290ZBRHFT pinout, TPS65290ZBRHFT application, or TPS65290ZBRHFT equivalent, key selection criteria include its 100-nA quiescent current in Zero IDDQ mode, 24-pin QFN (RHF) package with thermal pad, programmable VMAX analog multiplexer, and dual-control capability via BB_EN pin or serial interface - critical for autonomous power sequencing in long-life IoT endpoints.
Technical Context
The TPS65290ZBRHFT implements a hybrid PFM/PWM buck-boost topology with forced PWM option, enabling high efficiency across 100 nA–500 mA load range. Its VMAX block selects the higher of BB_OUT or VIN using internal back-to-back MOSFETs, while the CE pin enables deep-sleep mode with VMICRO bias active and serial interface disabled.
It integrates three factory-configured always-on bias options: Zero Leak Adjustable Bias (TPS65290ZB) delivers 10 mA at 100 nA IQQ with unregulated VIN−1.4 V output; LDOMINI (TPS65290LM) provides 10 mA regulated output at 400 nA IQQ; BuckMINI (TPS65290BM) supplies 30 mA regulated output at 300 nA IQQ. The TPS65290ZBRHFT is specifically configured for the Zero Leak variant.
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 V to 5.0 V in 200 mV steps, ±3% accuracy - programmable rail for system core or sensor supply. |
| LDO Output | 2.8 V fixed, 150 mA max, ±4% accuracy - stable low-noise supply for analog circuitry or RF modules. |
| Always-On Bias (Zero Leak) | VIN−1.4 V (0.6–2.0 V in 200 mV steps), 10 mA max, 100 nA IQQ - enables microcontroller deep sleep with zero leakage path. |
| Power Switches | Eight independent NMOS/PMOS switches (e.g., PWR_BB1: 100 mΩ, PWR_LDO1: 300 mΩ) - configurable rail routing without external FETs. |
| Interface | Factory-configured SPI/I²C - SPI selected by default for lower standby current; no external pull-up/pull-down required. |
| Operating Temp | −40°C to +85°C ambient - qualified for industrial and outdoor embedded applications. |
| Package | 24-pin RHF (4 mm × 4 mm QFN) with exposed thermal pad - optimized for compact PCB area and thermal dissipation. |
Pinout & Package
TPS65290ZBRHFT uses a 24-pin RHF QFN package (4 mm × 4 mm, 0.5 mm pitch) with exposed thermal pad connected to AGND/PGND. Pin functions are validated per TI SLVSBY5A datasheet Rev. May 2013.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Battery input | Main system input (2.2–5 V); powers all blocks except VMICRO bias when CE = low. |
| BB_VIN | Buck-boost input | Dedicated input for buck-boost stage; decoupled separately for optimal switching noise isolation. |
| BB_OUT | Buck-boost output | Primary regulated rail (1.0–5.0 V); feeds PWR_BB1/PWR_BB2 switches and VMAX selector. |
| VMAX | Analog multiplexer output | Outputs max(VIN, BB_OUT); used for automatic power source selection without host intervention. |
| LDO_IN / LDO_OUT | LDO input/output | 2.8 V LDO with 2.2 μF input and 2.2 μF output ceramic decoupling; supports 150 mA loads. |
| VMICRO | Microcontroller bias supply | Zero Leak Adjustable Bias output (VIN−1.4 V); 100 nA IQQ enables multi-year battery life in sleep mode. |
| CE | Chip enable | Active-low deep-sleep control: disables BB/LDO/switches but keeps VMICRO active and INT pulled low. |
| BB_EN | Buck-boost enable | Hardware-enable pin for standalone operation; overrides serial interface control for fail-safe startup. |
| INT | Interrupt output | Push-pull, active-low signal indicating fault (thermal shutdown, UVLO) or status change (e.g., VMAX transition). |
| MOSI/SDA, MISO, CS, SCL/SCK | Serial interface | SPI pins (CS active-high, 4-wire) or I²C pins (open-drain, internal 10 kΩ pull-down on CS, 10 kΩ pull-up on SDA/SCL). |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Leak Bias Supply | 100 nA quiescent current with VIN−1.4 V output - eliminates sleep-mode battery drain in decade-long deployments. |
| Programmable VMAX Selector | Automatically routes highest available voltage (VIN or BB_OUT) to system rails - enables seamless battery-to-harvester switchover. |
| Integrated Power Switches | Eight configurable switches (e.g., PWR_BB1: 100 mΩ, PWR_LDO1: 300 mΩ) - reduce BOM count and PCB area vs. discrete FET solutions. |
| Recovery Voltage Comparator | Configurable rising/falling thresholds (1.7–3.1 V in 0.1 V steps) - autonomously reconnects power blocks after brownout without MCU involvement. |
| Internal Compensation & Biasing | On-chip boost/buck compensation, I²C pull-ups, SPI pull-downs, and interrupt pull-up - eliminates 7 external passive components. |
| Thermal Protection | Two-tier shutdown: buck-boost-specific (141°C trip) and full-IC (160°C trip) with hysteresis - prevents damage during sustained overload. |
Applications
| Flow Meter Power Management | Energy Harvesting Node |
|---|---|
|
Use Scenario: Battery-powered ultrasonic flow meter operating in remote water infrastructure with 10+ year service life. IC Role / Device Role / Timing Role: TPS65290ZBRHFT manages primary power (LiSOCl₂ battery), boosts low-voltage pulses from piezoelectric transducers, and supplies VMICRO bias to MCU in 100-nA sleep state between measurements. Use Value: 100-nA Zero Leak bias extends battery life beyond 12 years; VMAX auto-select ensures continuous operation during battery depletion or solar recharge events. |
Use Scenario: Wireless sensor node powered by thermoelectric generator (TEG) with intermittent 20–100 μW output. IC Role / Device Role / Timing Role: TPS65290ZBRHFT acts as autonomous power arbiter: recovers energy into storage capacitor, regulates BB_OUT to 3.3 V for radio transmission, and enables VMICRO only during wake-up bursts. Use Value: Input voltage recovery comparator triggers BB startup at 1.8 V, enabling operation below typical PMIC thresholds; PFM mode sustains >75% efficiency at 100 μA load. |
| Industrial Handheld Scanner | Low-Power Fitness Tracker |
|
Use Scenario: Rugged handheld barcode scanner with dual power sources (rechargeable Li-ion + USB backup). IC Role / Device Role / Timing Role: TPS65290ZBRHFT routes power from either source via VMAX, powers imaging sensor from BB_OUT, supplies LDO for Bluetooth SoC, and controls PWR_VIN switch for USB isolation. Use Value: 500-mA buck-boost handles peak 400-mA laser diode current; 8 integrated switches eliminate 8 discrete MOSFETs and associated gate drivers. |
Use Scenario: Wearable fitness tracker requiring sub-10-μA average current in motion-sensing sleep mode. IC Role / Device Role / Timing Role: TPS65290ZBRHFT delivers VMICRO at VIN−1.4 V to ARM Cortex-M0+ in deep sleep, wakes system via INT on accelerometer event, and powers sensor rail from BB_OUT only during active measurement. Use Value: 100-nA IQQ reduces sleep current to dominant system factor; BB_EN pin allows hardware-triggered wake without serial bus initialization delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65290LMRHFT | Features LDOMINI bias (10 mA, 400 nA IQQ, regulated 1.8–3.3 V) instead of Zero Leak; identical buck-boost, LDO, and switch specs. | Preferred where regulated micro bias voltage is mandatory (e.g., ADC reference stability), not just ultra-low IQQ. | Select TPS65290LMRHFT if system requires precise VMICRO voltage tolerance (<±5%) over temperature and load. |
| TPS65290BMRHFT | Uses BuckMINI bias (30 mA, 300 nA IQQ, regulated 1.8–3.3 V with ~5% ripple); adds external inductor requirement. | Suitable for systems needing higher bias current (e.g., BLE SoC wake-up burst) where 30 mA > 10 mA and ripple is acceptable. | Choose TPS65290BMRHFT when VMICRO must deliver >10 mA continuously and board space allows 33 μH inductor placement. |
Compared with TPS65290LMRHFT and TPS65290BMRHFT, the TPS65290ZBRHFT uniquely delivers unregulated VIN−1.4 V output at 100 nA IQQ - making it the sole choice for applications where absolute minimum sleep current dominates design constraints, even at the expense of voltage regulation.
Availability
TPS65290ZBRHFT is available at Aetrix Electronics and suitable for energy harvesting nodes, industrial flow meters, and battery-powered handheld scanners requiring stable component supply, long-lifecycle support, and guaranteed traceability for ISO 13485 and IEC 61508-compliant designs.
Supply support for TPS65290ZBRHFT 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 low-power system solutions.
The TPS65290 product line was designed specifically for ultra-low-power, battery- and energy-harvesting–powered applications - delivering integrated power sequencing, intelligent source selection, and nanoscale quiescent current in a single chip.
FAQ
What is the quiescent current of the TPS65290ZBRHFT in deep-sleep mode?
The TPS65290ZBRHFT draws 100 nA quiescent current in Zero Leak Adjustable Bias mode when CE is low and all other blocks (buck-boost, LDO, switches) are disabled. This value is measured at TJ = 25°C with VIN = 3.6 V and represents the total device IQQ - enabling multi-decade battery life in applications like utility metering and environmental sensors.
How does the VMAX pin function in the TPS65290ZBRHFT?
The VMAX pin on the TPS65290ZBRHFT outputs the higher of VIN or BB_OUT through an internal analog multiplexer. It is decoupled with a 1 μF ceramic capacitor and serves as an autonomous power-source selector - eliminating need for MCU polling or external diode-OR circuits in dual-supply systems such as solar-charged battery backups.
Can the TPS65290ZBRHFT operate without a microcontroller?
Yes, the TPS65290ZBRHFT supports fully standalone operation via hardware pins: BB_EN enables the buck-boost converter directly, CE controls deep-sleep entry/exit, and the recovery voltage comparator autonomously re-enables power blocks after brownout - enabling self-contained power management in dumb sensors or legacy systems.
What are the key differences between TPS65290ZBRHFT and TPS65290LMRHFT?
The TPS65290ZBRHFT uses Zero Leak Adjustable Bias (VIN−1.4 V, 100 nA IQQ, unregulated), while TPS65290LMRHFT uses LDOMINI (regulated 1.8–3.3 V, 400 nA IQQ). Both share identical buck-boost, LDO, switch, and interface specs. The ZB variant prioritizes absolute minimum sleep current; LM prioritizes voltage precision.
Which external components are mandatory for basic TPS65290ZBRHFT operation?
Minimum external components for TPS65290ZBRHFT are: two 1 μF ceramic capacitors (BB_OUT and VMAX), one 2.2 μF capacitor (LDO_IN), one 2.2 μF capacitor (LDO_OUT), one 3.3 μH inductor (BB stage), and one 10 μF capacitor (VMICRO decoupling). No external resistors or pull-ups are needed - all biasing and interface termination is internal.
TPS65290ZBRHFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- 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)
TPS65290ZBRHFT FAQ
1.How can I place an order for TPS65290ZBRHFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65290ZBRHFT 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 TPS65290ZBRHFT reliable?
The price and inventory of TPS65290ZBRHFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65290ZBRHFT is usually 5 days.
3.What payment methods are accepted for TPS65290ZBRHFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65290ZBRHFT transactions.
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4.How is shipping managed for TPS65290ZBRHFT?
TPS65290ZBRHFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65290ZBRHFT 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 TPS65290ZBRHFT?
For technical support, including TPS65290ZBRHFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65290ZBRHFT requirements.
6.How does Aetrix verify that TPS65290ZBRHFT is sourced from the original manufacturer or authorized distributors?
All TPS65290ZBRHFT 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 TPS65290ZBRHFT meets industry standards.
7.What is the process for return or replacement of TPS65290ZBRHFT?
All TPS65290ZBRHFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65290ZBRHFT, 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 TPS65290ZBRHFT part is unused and in its original packaging.
Return procedure for TPS65290ZBRHFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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