Low Iq Boost Converter with 15nA Bypass Operation
Product details
Parameters
Package | Pins | Size
Features
- Input Voltage Range 0.9V to 5V
- Startup Voltage 1.5V at 20mA Load
- Pin Selectable Output Voltages:
3.3V, 3V, 2.5V - 15nA typical Quiescent Current in
Bypass Mode - 5.7µA typical Quiescent Current in
Boost Mode - Bypass Switch from VIN to VOUT
- IOUT > 200mA at 3.3V VOUT,
VIN = 1.8V - Internal Feedback Divider Disconnect
(Bypass Mode) - Controlled Bypass Transition Prevents
Reverse Current into Battery - Power-Save Mode at Light Loads
- Overtemperature Protection
- Redundant Overvoltage Protection
- Small 2mm × 2mm SON 6-pin package
Description
The TPS61291 is a boost converter with pin selectable output voltages and an integrated bypass mode. In bypass operation, the device provides a direct path from the input to the system and allows a low power micro controller (MCU) such as the MSP430 to operate directly from a single 3V Li-MnO2 battery or dual alkaline battery cells.
In bypass mode the integrated feedback divider network for boost mode operation is disconnected from the output and the quiescent current consumption drops down to only 15nA (typical).
In boost mode the device provides a minimum output current of 200mA at 3.3V VOUT from 1.8V VIN. The boost mode is used for system components which require a regulated supply voltage and cannot directly operate from the input source. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency and consumes typically 5.7µA from the output. During startup of the boost converter, the VSEL pin is read out and the integrated feedback network sets the output voltage to 2.5V, 3V or 3.3V.
Bypass mode or boost mode operation is controlled by the system via the EN/BYP pin.
The device integrates an enhanced bypass mode control to prevent charge, stored in the output capacitor during boost mode operation, from flowing back to the input and charging the battery.
The device is packaged in a small 6-pin SON package (DRV) measuring 2.0mm × 2.0mm × 0.75mm.
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Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The TPS61291EVM-569 facilitates the evaluation of the TPS61291 Low IQ Boost Converter with Bypass Mode device. The device outputs a user-selectable output voltage of 2.5V, 3V, or 3.3V. Available output current depends on the input voltage and output voltage but is generally around 200 mA (...)
Features
- 5.7 µA IQ
- 15 nA Bypass Mode
- 0.9V to 5V Input Voltage Range
- 2.5V, 3V, or 3.3V Output Voltage
- 200 mA Output Current at 3.3Vout from a 1.8V Input Voltage
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-00484 Gerber (Rev. C).zip (465KB) -
download TIDA-00484 BOM (Rev. C).pdf (57KB) -
download TIDA-00484 Assembly Drawing (Rev. C).pdf (135KB) -
download TIDA-00484 PCB (Rev. C).pdf (869KB) -
download TIDA-00484 Altium (Rev. C).zip (768KB)
Design files
-
download TIDA-01477 Assembly Drawing (Rev. A).pdf (136KB) -
download TIDA-01477 BOM (Rev. A).pdf (57KB) -
download TIDA-01477 CAD Files (Rev. A).zip (764KB) -
download TIDA-01477 Gerber (Rev. A).zip (481KB) -
download TIDA-01477 PCB (Rev. A).pdf (876KB)
Design files
-
download TIDA-01469 BOM.pdf (65KB) -
download TIDA-01469 Assembly Drawing.pdf (129KB) -
download TIDA-01469 PCB.pdf (730KB) -
download TIDA-01469 CAD Files.zip (3748KB) -
download TIDA-01469 Gerber.zip (297KB)
Design files
-
download PMP9763 BOM.pdf (17KB) -
download PMP9763 Gerber.zip (402KB)
Design files
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (DRV) | 6 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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