AP2004 View Datasheet(PDF) - Anachip Corporation
Part Name
Description
Manufacturer
AP2004 Datasheet PDF : 8 Pages
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PWM Buck Controller
Features
- PWM Buck Control Circuitry
- Operating voltage can be up to 27V
- Under voltage Lockout (UVLO) Protection
- Short Circuit Protection (SCP)
- Soft-start circuit
- Variable Oscillator Frequency -- 300Khz Max
- 1.25V voltage reference Output
- 8-pin PDIP and SOP packages
Applications
- Backlight inverter
- LCD Monitor
- XDROM, XDSL Product
- DC/DC converters in computers, etc.
Pin Assignment
( Top View )
OUT 1
VCC 2
COMP 3
FB 4
8 GND
7 CT
6 SS
5 SCP
PDIP/SOP
Ordering Information
AP2004
General Description
The AP2004 integrates Pulse-Width-Modulation
(PWM) control circuit into a single chip, mainly
designs for power-supply regulator. All the functions
include an on-chip 1.25V reference output, an error
amplifier, an adjustable oscillator, a soft-start,
UVLO, SCP circuitry, and a push-pull output circuit.
Switching frequency is adjustable by trimming CT.
During low VCC situation, the UVLO makes sure
that the outputs are off until the internal circuit
operates normally.
Pin Descriptions
Name
CT
FB
SS
COMP
OUT
GND
VCC
SCP
Description
Timing Capacitor
Voltage Feedback
Soft-Start.
Feedback Loop Compensation
PWM Output
Ground
Supply Voltage
Short Circuit Protection
AP2004 X X X
Package
Lead Free
Packing
N: PDIP-8L Blank : Normal
Blank : Tube
S: SOP-8L L : Lead Free Package A : Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.4 Arpr 6, 2004
1/8
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