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AP2004 Datasheet(PDF) 3 Page - Diodes Incorporated

Part # AP2004
Description  PWM BUCK CONTROLLER
PDF  8 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP2004 Datasheet(HTML) 3 Page - Diodes Incorporated

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AP2004
PWM BUCK CONTROLLER
AP2004 Rev. 3
3 of 8
FEBRUARY 2009
www.diodes.com
© Diodes Incorporated
Block Diagram
Bandgap
Reference
OUT
PWM Amplifier
FB
VCC
SCP
CT
Error Amplifier
COMP
UVLO
GND
0.7V
1.5V
+
-
2.5V
Internal use
1.25V
Iss
+
-
VCC
Oscillator
MAX.300KHz
SS
+
+
-
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
PD
Power dissipation at 25
°C
600
mW
VCC
Supply voltage
28
V
VI
Amplifier input voltage
20
V
VO
Collector output voltage
VCC-1.0V
V
ISOURCE
Source current
200
mA
ISINK
Sink current
200
mA
TOP
Operating junction temperature range
-20 to +125
oC
TST
Storage temperature range
-65 to +150
oC
Recommended Operating Conditions
Symbol
Parameter
Min
Max
Unit
VCC
Supply voltage
3.6
27
V
VI
Amplifier input voltage
1.05
1.45
V
VO
Collector output voltage
Vcc-1.5
V
IFB
Current into feedback terminal
45
µA
RF
Feedback resistor
100
k
Ω
CT
Timing capacitor
100
6800
pF
FOSC
Oscillator frequency
10
300
KHz



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