This Anachip version datasheet is replaced
with Diodes Inc. datasheet AP2001
AP2001
Monolithic Dual Channel PWM Controller
Features
General Description
- Dual PWM control circuitry
The AP2001 integrates Pulse-width-Modulation
(PWM) control circuit into a single chip, mainly
designs for power-supply regulator. All the functions
included an on-chip 2.5V reference output, two
error amplifiers, an adjustable oscillator, two
dead-time comparators, UVLO, SCP, DTC circuitry,
and dual common-emitter (CE) output transistor
circuit.
- Operating voltage can be up to 50V
- Adjustable Dead Time Control (DTC)
- Under Voltage Lockout (UVLO) protection
- Short Circuit Protection (SCP)
- Variable oscillator frequency...... 500KHz Max
- 2.5V voltage reference output
- 16-pin PDIP, TSSOP and SOP packages
Recommend the output CE transistors as pre-driver
for Driving externally. The DTC can provide from
0% to 100%. Switching frequency can be
adjustable by trimming RT and CT. During low VCC
situation, the UVLO makes sure that the outputs
are off until the internal circuit is operational
normally.
Applications
- Backlight inverter
- DC/DC converts in computers, etc.
Pin Assignments
Pin Descriptions
( Top View )
Name
CT
Description
Timing Capacitor
1
2
3
4
5
6
7
8
CT
REF
16
15
RT
Timing Resistor
SCP
EA2+
EA2-
FB2
DTC2
OUT2
VCC
RT
EA1+
EA1-
FB1
DTC1
OUT1
GND
14
13
12
11
10
9
EA+
EA -
FB
Error Amplifier Input(+)
Error Amplifier Input(-)
Feedback Loop Compensation
Dead Time Control
Pre-driver Output
Ground
DTC
OUT
GND
VCC
PDIP/TSSOP/SOP
Supply Voltage
SCP
REF
Short Circuit Protection
Voltage Reference
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. 1.1 May 23, 2005
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