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Diodes Semiconductor Electronic Components Datasheet

AP3700A Datasheet

LOW POWER PWM CONTROLLER

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AP3700A pdf
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
General Description
Features
AP3700/A
The AP3700/A is a green-mode pulse width modula-
tion (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/1A, the maximum standby power is only 0.18W.
In normal operation, the AP3700/A switches on and
off at a fixed switching frequency of 60 kHz. With a
current limit capability of 460mA for AP3700 and
500mA for AP3700A, the AP3700/A 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 AP3700/A also features under-voltage lockout,
over-current and short circuit protections.
· Current Mode Control with Skip Cycle Capability
· Lower Operating Current: 0.45mA
· Fixed Switching Frequency: 60 kHz
· Frequency Dithering for Low EMI: ±2.5kHz
· 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 AP3700/A is available in TO-92 package.
Mar. 2008 Rev. 1. 4
TO-92
(Bulk Packing)
TO-92
(Ammo Packing)
Figure 1. Package Types of AP3700/A
BCD Semiconductor Manufacturing Limited
1


Diodes Semiconductor Electronic Components Datasheet

AP3700A Datasheet

LOW POWER PWM CONTROLLER

No Preview Available !

AP3700A pdf
Data Sheet
LOW POWER PWM CONTROLLER FOR OFF-LINE BATTERY CHARGER
Pin Configuration
AP3700/A
Z Package
(TO-92)
3 OUT
2 GND
1 VCC
Figure 2. Pin Configuration of AP3700/A (Top View)
Pin Description
Pin Number
1
2
3
Pin Name
Function
VCC The power supply of the IC, and is generally connected to opto-coupler's emitter
GND Supply ground
OUT The output pin, connected to the emitter of NPN transistor or the source of MOSFET
Mar. 2008 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
2


Part Number AP3700A
Description LOW POWER PWM CONTROLLER
Maker BCD
Total Page 11 Pages
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