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PDF AP2001NA Data sheet ( Hoja de datos )
| Número de pieza | AP2001NA | |
| Descripción | Monolithic Dual Channel PWM Controller | |
| Fabricantes | ETC | |
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Monolithic Dual Channel PWM Controller
AP2001
Features
- Dual PWM Control Circuitry
- 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 and SOP packages
Applications
- Backlight inverter
- DC/DC converts in computers, etc.
General Description
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.
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.
Pin Assignments
( Top View )
CT
RT
EA1+
EA1-
FB1
DTC1
OUT1
GND
1
2
3
4
5
6
7
8
16 REF
15 SCP
14 EA2+
13 EA2-
12 FB2
11 DTC2
10 OUT2
9 VCC
PDIP/SOP
Pin Descriptions
Name
CT
RT
EA+
EA -
FB
DTC
OUT
GND
VCC
SCP
REF
Description
Timing Capacitor
Timing Resistor
Error Amplifier Input(+)
Error Amplifier Input(-)
Feedback Loop Compensation
Dead Time Control
Pre-driver Output
Ground
Supply Voltage
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. 0.3 Feb 20, 2004
1/8
1 page  
Monolithic Dual Channel PWM Controller
AP2001
Electrical Characteristics (Continued)
Error-amplifier
Symbol
Parameter
Conditions
VIO Input offset voltage
IIO Input offset current
IIB Input bias current
VO (FB)=1.25V
VO (FB)=1.25V
VO (FB)=1.25V
VCM
Common-mode input voltage
range
VCC=3.6V ~ 40V
AV
GBW
CMRR
VOH
VOL
IOI
IOO
Output section
Symbol
Open-loop voltage
amplification
RF=200 kΩ
Unity-gain bandwidth
Common-mode rejection ratio
Max. output voltage
Min. output voltage
Output (sink) current (FB)
VID = -0.1V, VO = 1.25V
Output (source) current (FB) VID = 0.1V, VO = 1.25V
Parameter
Conditions
ILEAK
Leakage current
VO = 40V
VSAT
Output saturation voltage
IO = 10 mA
ISC Short-circuit output current
PWM comparator
Symbol
Parameter
VO = 6V
Conditions
VT0
VT100
Total device
Symbol
Input threshold voltage at f = Zero duty cycle
10 Khz (FB)
Maximum duty cycle
Parameter
Conditions
ICCS Standby supply current
ICCA Average supply current
Off-state
RT = 10 kΩ
Min.
1.05
to
1.45
70
60
Vref-0.1
0.5
-45
Min.
Min.
1.2
Min.
Typ.
160
80
1.5
80
1.6
-70
Typ.
1.2
90
Typ.
2.05
1.45
Typ.
2.5
2.8
Max.
±6
±100
500
1
Max.
10
2
Max.
2.25
Max.
3.0
3.5
Unit
mV
nA
nA
V
dB
MHz
dB
V
V
mA
µA
Unit
µA
V
mA
Unit
V
V
Unit
mA
mA
Anachip Corp.
www.anachip.com.tw
Rev. 0.3 Feb 20, 2004
5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet AP2001NA.PDF ] | |
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