The document is about LT1372/LT1377 5V to 12V Step-Up Converters, which has the following features: output voltage is 11.60~12.50V, output current is 250mA, input voltage range is 2.7~11V, switching frequency is 500kHz/1MHz, output ripple voltage is 150mVP-P/80mVP-P, supply current is 4.5mA, shutdown supply current is 100µA.
This document is a demonstration manual for the DC053A evaluation board, which utilizes the LT1372 or LT1377 constant frequency, high efficiency switching regulators. The board is designed to evaluate these devices in a typical step-up application, converting 5V input to 12V output.
| Output Current | 250 mA |
|---|---|
| Input Voltage Range | 2.7 to 11 V |
| Switching Frequency LT1372 | 500 kHz |
| Output Ripple Voltage | 150 mV P-P |
| Supply Current | 4.5 mA |
The shutdown supply current is 100 µA maximum, though applications can reduce this to 30µA maximum.
The output voltage is set by resistors R2 and R3 using the formula V OUT = VREF (1 + R3/R2).
The demo board uses a MBRS130LT3 Schottky diode rated for 30V and 1A.