AP2502
AP2502 is 4-CH Linear Constant Current Sink manufactured by BCD.
Data Sheet
4-CH Linear Constant Current Sink With Matching
General Description
The AP2502 is a 4-channel independent linear current sink with low dropout voltage and perfect match between each channel. Each channel can provide 20m A continuous constant current.
In application, there is only one 0.1µF ceramic capacitor required, and there is no any EMI and switching noise issue. It is perfect choice for hand-hold portable system especially based on Li-ion/Polymer battery powered display module.
The brightness can be controlled and/or adjustable via simple PWM signal applied to EN pin.
The AP2502 is available with SOT-23-6 and TSOT-23-6 packages.
Features
- Current Matching Between Each Channel: ±1%
- Low Dropout Voltage: 65m V (Typ.) @ ILED=
20m A
- Maximum Output Current on Each Channel:
20m A
- Ultra-low Quiescent Current: 125µA (Typ.)
- Ultra-low Shutdown Current: 1µA (Max.)
- None EMI and Switching Noise Issue
- Permitted PWM Dimming Frequency up to
- 150k Hz
- OTSD Protection
Applications
- Mobile Phone, Smart Phone, PDA
- MP3, MP4, PMP
- Small Size Backlight Module
SOT-23-6
TSOT-23-6
Figure 1. Package Types of AP2502
Oct. 2010 Rev 1. 1
BCD Semiconductor Manufacturing Limited 1
4-CH Linear Constant Current Sink With Matching
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