AP3700E
AP3700E is LOW POWER PWM CONTROLLER manufactured by BCD.
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
General Description
Features
The AP3700E is a green-mode pulse width modulation (PWM) controller. It is specially designed for low power applications such as off-line battery chargers, where the needs for low standby power, space saving and low cost are all required. In a battery charger rated 5V/0.8A, the maximum standby power is only 0.18Watt.
In normal operation, the AP3700E switches on and off at a fixed switching frequency of 60 k Hz. With a current limit capability of 460m A, the AP3700E can directly drive the emitter of high voltage NPN transistor. When output power falls below a given level, the IC enters skip cycle mode to reduce power consumption.
The AP3700E also Features under-voltage lockout, over-current and short circuit protections.
- Current Mode Control with Skip Cycle Capability
- Lower Operating Current: 0.45m A
- Fixed Switching Frequency: 60 k Hz
- Frequency Dithering for Low EMI: ±2.5k Hz
- Under-Voltage Lockout Protection
- Over-Current Protection
- Internal Short Circuit Protection
- Higher Output Voltage at OUT Terminal
- Low Total Cost Solution
Applications
- Battery Chargers
- Off-Line Power Supplies
The AP3700E is available in TO-92 package.
May 2008 Rev. 1. 1
TO-92 (Buck Packing)
TO-92 (Ammo Packing)
Figure 1. Package Types of AP3700E
BCD Semiconductor Manufacturing Limited 1
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
Pin Configuration
Z Package (TO-92)
3 OUT 2 GND 1...
