AP2007 Datasheet, PDF (1/7 Pages) Anachip Corp – Synchronous PWM Controller

Synchronous PWM Controller
„ Features
- Single 4.5V to 20V Supply Application
- 0.8V + 2.0% Voltage Reference
- Virtual Frequency Control^TM
- Fast Transient Response
- Synchronous Operation for High Efficiency (93%)
- Short Circuit Protect
- Small Size with Minimum External Components
- Soft Start and Enable Functions
- Under Voltage Lockout Function
- SOP-8L Pb-Free Package
„ Applications
- Microprocessor Core Supply
- Low Cost Synchronous Applications
- Voltage Regulator Modules (VRM)
- Networking Power Supplies
- Sequenced Power Supplies
- Telecommunication Power Supplies.
AP2007
„ General Description
The AP2007 is a low-cost, full featured, synchronous
voltage-mode controller designed for use in single
ended power supply applications where efficiency is
of primary concern. Synchronous operation allows
for the elimination of heat sinks in many applications.
The AP2007 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.
High-side drive circuitry, and preset shoot-thru
control, allows the use of inexpensive
1P+1N-channel power switches.
AP2007’s features include temperature
compensated voltage reference, Virtual Frequency
Control^TM method to reduce external component count,
an internal 200KHz virtual frequency oscillator,
under-voltage lockout protection, soft-start,
shutdown function and current sense comparator
circuitry.
Virtual Frequency Control is a trademark of
PWRTEK, LLC.
„ Pin Assignments
(Top View)
VCC
DRVP
GND
DRVN
1
8
2
7
3 ^AP2007 6
4
5
SOP-8L
V_REF
PHASE
FB
SS/SHDN
„ Ordering Information
AP2007 X X
Package
S: SOP-8L
Packing
Blank : Tube
A : Taping
„ Pin Descriptions
Name
VCC
V_REF
PHASE
DRVP
GND
DRVN
FB
SS/ SHDN
Description
Chip supply voltage
Reference voltage
Input from the phase node between
the MOSFETs
High side driver output (P MOSFET)
Ground
Low side driver output (N MOSFET)
Feedback input
Soft start, a capacitor to ground sets
the slow start time / Shutdown
function
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. 1.0 Apr 1, 2005
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