Ap1609, Block diagram, Absolute maximum ratings – Diodes AP1609 User Manual
Page 3: Pwm/pfm dual mode step-up dc/dc converter
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AP1609
PWM/PFM DUAL MODE STEP-UP DC/DC CONVERTER
AP1609 Rev. 2
3 of 9
FEBRUARY 2009
www.diodes.com
©
Diodes Incorporated
Block Diagram
Phase
Compensation
Vref with
CE
+
-
PWM/PFM
Controller
+
-
Ramp Wave
Generator,
OSC
Buffer,
Driver
FB
CE
PGND
LX
PWM
Comparator
GND
Vcc
Absolute Maximum Ratings
Symbol
Parameter
Ratings
Units
V
CC
V
IN
Pin Voltage
-0.3 ~ 7
V
V
FB
FB Pin Voltage
-0.3 ~ V
CC
+0.3 V
V
CE
CE Pin Voltage
-0.3 ~ V
CC
+0.3 V
V
SW
Switch Voltage (LX to GND)
-0.3 ~ 18
V
I
LX
Switch Current
-3 ~ 0.2
A
P
D
Continuous Total Power Dissipation
1200
mW
T
OPR
Operating Ambient Temperature
-20 ~ +80
o
C
T
STG
Storage Temperature
-20 ~ +125
o
C
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