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AP1635 Datasheet(PDF) 3 Page - Diodes Incorporated

Part # AP1635
Description  PWM/PFM DUAL MODE STEP-DOWN DC/DC
PDF  8 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP1635 Datasheet(HTML) 3 Page - Diodes Incorporated

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AP1635
PWM/PFM DUAL MODE STEP-DOWN DC/DC
CONVERTER
AP1635 Rev. 4
3 of 8
FEBRUARY 2009
www.diodes.com
© Diodes Incorporated
Block Diagram
Phase
Compensation
Vref with
CE
+
-
PWM/PFM
Controller
+
-
Ramp Wave
Generator,
OSC
SW
CE/SS
GND
PVcc
PWM
Comparator
FB
Current Limit
Soft
Start
ERR
AMP
SVcc
Absolute Maximum Ratings
(TA=25°C)
Symbol
Parameter
Ratings
Units
VCC/SVCC
VIN Pin Voltage
-0.3 ~ 5.0
V
VSW
SW Pin Voltage
-0.3
~
VIN+0.3
V
VFB
FB Pin Voltage
-0.3
~
VIN+0.3
V
VCE/SS
CE/SS Pin Voltage
-0.3
~
VIN+0.3
V
PD
Continuous Total Power Dissipation
Internal limited
TOPR
Operating Ambient Temperature
-25 ~ +80
°C
TSTG
Storage Temperature
-40 ~ +125
°C



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