APE1630 Datasheet, PDF (1/11 Pages) Advanced Power Electronics Corp. – 32V,1A STEP-DOWN HIGH BRIGHTNESS LED DRIVER WITH 5000:1 DIMMING

Advanced Power
Electronics Corp.
Preliminary
APE1630
32V,1A STEP-DOWN HIGH BRIGHTNESS
LED DRIVER WITH 5000:1 DIMMING
GENERAL DESCRIPTION
The APE1630 is a continuous conduction mode inductive step-down converter,
designed for driving single or multiple series connected LED efficiently from a voltage source
higher than the total LED chain voltage. The device operates from an input supply between
8V and 32V and provides an externally adjustable output current of up to 1A. Depending
upon the supply voltage and external components, the APE1630 can provide more than 15
watts of output power. The APE1630 includes the power switch and a high-side output
current sensing circuit, which uses an external resistor to set the nominal average output
current, and a dedicated DIM input accepts a wide range of pulsed dimming. Applying a
voltage of 0.3V or lower to the DIM pin turns the output off and switches the device into a
low current standby state.
The APE1630 is available in SOT-89-5L package.
FEATURES
- Simple Low Parts Count
- Wide Input Voltage Range: 8V to 32V
- Up to 1A Output Current
- Single Pin On/Off and Brightness Control Using PWM
- Up to 1MHz Switching Frequency
- Typical 5% Output Current Accuracy
- High-Side Current Sense
- Hysteretic Control: No Compensation
- Adjustable Constant LED Current
Data and specifications subject to change without notice
1
20110309pre