APE8901 Advanced Power Electronics Corp., APE8901 Datasheet - Page 4

• Manufacturer Part Number: APE8901
• Manufacturer: Advanced Power Electronics Corp.

Specifications of APE8901

• Vin(min): 1
• Vin(max): 5.5
• Vout(min): 0.8
• Vout(max): 2.8
• Iout(max): 1
• Vref: 0.8
• Quiescent Current Typ.: 100uA
• En: ?
• Pok: ?
• Package: Exposed SOP8,SOT-26,DFN 2x2

FB
VIN
VCNTL
POK
EN
BLOCK DIAGRAM
PIN DESCRIPTION
Advanced Power
Electronics Corp.
regulator. The output voltage set by the resistor divider is determined by:
to GND. A bypass capacitor may be connected with R1in parallel to improve load transient
response. The recommended R2 and R1 are in the range of 1K~100kΩ.
Power-On Reset purpose.
voltage provides the bias for the control circuitry. The voltage at this pin is monitored for Power-On
Reset purpose.
output voltage by sensing FB voltage. This pin is pulled low when the rising FB voltage is not
above the VPOK threshold or the falling FB voltage is below the VPOK threshold, indicating the
output is not OK.
enabled, the IC undergoes a new soft-start cycle. Left this pin open, this pin is internal pulled up to
VCNTL voltage, enabling the regulator.
Connecting this pin to an external resistor divider receives the feedback voltage of the
Where R1 is connected from VOUT to FB with Kelvin sensing and R2 is connected from FB
Main supply input pins for power conversions. The voltage at this pin is monitored for
Power input pin of the control circuitry. Connecting this pin to a +5V (recommended) supply
Power-OK signal output pin. This pin is an open-drain output used to indicate status of
Enable control pin. Pulling and holding this pin below 0.4V shuts down the output. When re-
VCNTL
GND
VIN
EN
Enable
Power -ON
Shutdown
Thermal
Reset
Control Logic
Soft-Start
0.4V
And
Current
+
UV
Limit
Delay
-
POK
N-MOSFET
-
POK
Bandgap
+
Error
Amp
90%
Vref
90Ω
VOUT
FB
APE8901
4