APE8872M Advanced Power Electronics Corp., APE8872M Datasheet - Page 3

• Manufacturer Part Number: APE8872M
• Description: The APE8872 is a low dropout linear regulator which is designed to power a DC fan and delivers up to 500mA output current
• Manufacturer: Advanced Power Electronics Corp.

Specifications of APE8872M

• Vin (max.): 7V
• Current (max.): 0.5A
• Vo / Vset: 1.6V/V
• Package: SOP-8L
• Fully On: ?

Output Voltage Regulation
Current-Limit
Short Current Protection
Thermal Shutdown
FUNCTION DESCRIPTION
PIN DESCRIPTIONS
BLOCK DIAGRAM
PIN SYMBOL
voltage until it reaches V
prevent load and APE8872 from damages during overload or short circuit conditions.
circuit, the fold back current limit circuitry limits the output current to 500mA. The fold back current
limit is used to reduce the power dissipation during short circuit condition.
temperature exceeds +150°C, a thermal sensor turns off the output PMOS, allowing the device to
cool down. The regulator regulates the output again through initiation of a new soft-start cycle after
the junction temperature cools by 40°C, resulting in a pulsed output during continuous thermal
overload conditions.
Advanced Power
Electronics Corp.
VSET
GND
FON
VIN
VO
The Output Voltage is set by V
The APE8872 monitors the current via the output PMOS and limits the maximum current to
When the output voltage drops below 0.6V (typical), which is caused by over load or short
A thermal shutdown circuit limits the junction temperature of APE8872. When the junction
FON
VIN
IN
PIN DESCRIPTION
GND pin
IC power supply pin
Output Pin. Its voltage is 1.6 times of V
This pin sets the output voltage. Its voltage must be larger than 1V to guarantee
V
FON Input. Pulling this pin below 0.4V turns the regulator fully on. Internally pulled high.
Current Limit and
O
V
voltage.
Short Protection
Shutdown
O
1.6 times of VSET
Thermal
Logic
Fully On
SET
voltage. V
VSET
- +
Error
Amp
O
output voltage follows the 1.6 times of V
SET
VO
GND
APE8872
SET
3