AP2003 Datasheet, PDF (1/6 Pages) Anachip Corp – Synchronous PWM Controller

Synchronous PWM Controller
„ Features
- Single or Dual Supply Application
- 0.8V + 1.0% Voltage Reference.
- Fast transient response.
- Synchronous operation for high efficiency (95%)
- Soft Start functions
- Small size with minimum external components
- Industrial temperature range
- Under Voltage Lockout function
- SOP-8L package
„ Applications
- Microprocessor core supply
- Low cost synchronous applications
- Voltage Regulator Modules (VRM)
- DDR termination supplies
- Networking power supplies
- Sequenced power supplies
AP2003
(Preliminary)
„ General Description
The AP2003 is a low-cost, full featured, and
synchronous voltage-mode controller designed for
use in single ended power supply applications
where efficiency is of the primary concern. This
synchronous operation allows the elimination of
heat sinks in many applications. The AP2003 is
ideal for implementing DC/DC converters needed to
power advanced microprocessors in low cost
systems, or in distributed power applications where
efficiency is important. Internal level-shift,
high-side drive circuitry, and preset shoot-thru
control, allows the use of inexpensive N-channel
power switches.
AP2003 features include temperature compensated
voltage reference, an internal 200KHz virtual
frequency oscillator, under-voltage lockout
protection, soft-start, and shutdown function.
„ Pin Assignment
„ Pin Descriptions
(Top View)
SS/SHDN ¹
8 COMP
VCC ² _AP2003 ⁷ SENSE
DRVH 3
6 BSTH
GND 4
5 DRVL
SOP-8L
„ Ordering Information
AP2003 X X X
Package
Lead Free
Packing
S: SOP-8L Blank : Normal
Blank : Tube
L : Lead Free Package A : Taping
Name
Description
VCC Chip supply voltage
DRVH High side driver output
DRVL Low side driver output
BSTH Bootstrap, high side driver
SENSE Voltage sense input
COMP
SS/ SHDN
GND
Compensation pin
Soft start, a capacitor to ground sets
the slow start time
Ground
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. 0.1 Feb.10, 2004
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