AP1509-33SG-13 Diodes Zetex, AP1509-33SG-13 Datasheet - Page 3

• Manufacturer Part Number: AP1509-33SG-13
• Description: Conv DC-DC Single Step Down 4.5V to 22V 8-Pin SOP T/R
• Manufacturer: Diodes Zetex
• Type: Step Downr

Specifications of AP1509-33SG-13

• Package: 8SOP
• Number Of Outputs: 1
• Minimum Input Voltage: 4.5 V
• Maximum Input Voltage: 22 V
• Switching Frequency: 173 KHz
• Operating Supply Voltage: 4.5 to 22 V
• Maximum Output Current: 2 A
• Output Type: Fixed
• Output Voltage: 3.3 V
• Switching Regulator: Yes
• Efficiency: 78(Typ) %
• Operating Temperature: -20 to 85 °C

Pin Descriptions
Functional Block Diagram
AP1509
Document number: DS31016 Rev. 4 - 2
Pin Name
FB
Output
GND
SD
V
FB
IN
Current
Source
bias
Operating voltage input
Switching output
Ground
Output voltage feedback control
ON/OFF Shutdown
Reference
1.235V
+
_
Amp
Description
Frequecy
compen-
Regulator
sation
2.5V
www.diodes.com
Comp
+
_
3 of 13
Start
150kH
150KHz, 2A PWM BUCK DC/DC CONVERTER
OSC.
up
SD
z
driver
Pre-
Comp
Comp
200mV
Shutdown
Thermal
_
+
+
_
220mV
Switch
2A
AP1509
© Diodes Incorporated
GND
Output
V
IN
June 2010