This document introduces the LT ®1182/LT1183/LT1184/LT1184F CCFL/LCD Contrast Switching Regulators products, including the product supported input voltage range, output current, switching frequency, lamp configuration, protection circuit, etc.
The LT1182, LT1183, LT1184 and LT1184F are dual current‑mode switching regulators designed for CCFL and LCD contrast control. They operate from a wide input voltage range, offer low quiescent current, and support both grounded and floating lamp configurations.
Typical applications include notebook and palmtop computers, portable instruments, automotive displays, and retail terminals. The datasheet includes detailed electrical characteristics, performance graphs, and recommended circuit examples.
| Input Voltage Range | 3 V to 30 V |
|---|---|
| Typical Quiescent Current | 9 mA |
| Switching Frequency | 200 kHz |
| Shutdown Current (standby) | 35 µA |
| Maximum Input Voltage | 30 V |
| Package | 16‑lead plastic SOIC |
The devices operate from 3 V up to 30 V.
Typical quiescent current is 9 mA.
They switch at a typical frequency of 200 kHz.
In shutdown the current drops to about 35 µA.