BT29 Series
Clean-and-Simple, Optocoupler-Enhanced Boost Regulators
Description
BT29 is a series of low-noise, switching-free optocoupler-enhanced linear boost voltage regulators that use Polaris Semiconductor’s patented circuit topology. The devices consist of a high current MIC29152 LDO co-packaged with Polaris Semiconductor high-efficiency optocoupler chips. This offers high PSRR, low ground current, and high output current performance combined with efficient, switching-free boost capability.
The BT29 series has been designed for up to 5V output and is configured for 3-5V input voltages. During optocoupler-enhanced operation, the LDO injects current into the optocoupler’s LED, which transfer photons to the PV device. In turn, the PV device steps-up the input voltage which is then regulated by the LDO’s feedback circuit. The result is an efficient, simple, and switching-free boost regulator.
Specifications
| Device | Nominal VOUT Range | IIN 1 @ IOUT=0.1A | Min VIN @IOUT=0.1A | QFN Package |
|---|---|---|---|---|
| BT291D18M | VON-5V | 240mA | 3.1V (M) | QFN-286x6x0.8mm3 |
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1 Typical input current after device turn-on
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| Max VOUT | 5 V |
| Min VIN | 3.1 V @ 0.1 A |
| Max IOUT | 500 mA |
| TID | 200 krad(Si) |
Applications
Clean Analog Supply Requirements
Post-Switching Power Supply
Rad-Tolerant Space Power Supply
Battery-Powered Systems
Documentation
Technical documentation for this product
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