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AP1503 Datasheet(PDF) 3 Page - Anachip Corp

Part # AP1503
Description  300Khz, 2.5A PWM Buck DC/DC Converter
PDF  5 Pages
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Manufacturer  ANACHIP [Anachip Corp]
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AP1503 Datasheet(HTML) 3 Page - Anachip Corp

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AP1503
300Khz, 2.5A PWM Buck DC/DC Converter
Anachip Corp.
www.anachip.com.tw
Rev 1.0 Sep. 29, 2004
3/5
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VCC
Supply Voltage
+26
V
VSD
ON/OFF Pin input voltage
-0.3 to +25
V
VFB
Feedback Pin voltage
-0.3 to +25
V
VOUT
Output voltage to Ground
-1
V
PD
Power dissipation
Internally limited
W
TST
Storage temperature
-65 to +150
oC
TOP
Operating temperature
-40 to +125
oC
VOP
Operating voltage
+7 to +40
V
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, VIN=12V for 3.3V, 5V, ILOAD = 0.5A
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
255
300
345
FOSC
Oscillator frequency
230
360
KHz
0.5
VSAT
Saturation voltage
ISW=2A
VB=VIN+2.5V.
0.4
0.6
V
Max. Duty Cycle (ON)
VFB=0V force driver on
90
DC
Min. Duty cycle (OFF)
VFB=6V force driver off
0
%
3.5
ICL
Current limit
Peak current
No outside circuit
VFB=0 force driver on
3
3.25
4
A
Output = 0
no outside circuit
VFB=6V force driver off
-1
uA
IL
Output = -1
Output
leakage
current
VIN=24V
-1
mA
COMP Min SW threshold Duty Cycle=0%,FB=3.5V
0.04
VC
2A ISW threshold
0.8
V
VB
Min VB above switch
ISW=2A
2.6
3
V
ISW=1A
120
IB
Boost current
ISW=2A
130
140
mA
IQ
Quiescent Current
VFB=6 force driver off
5
10
mA
150
ISTBY
Standby Quiescent
Current
ON/OFF pin=5V
VIN=24V
80
200
uA
VIL
Low (regulator ON)
-
0.6
VIH
ON/OFF pin logic input
threshold voltage
High (regulator OFF)
2.0
1.3
-
V
IH
ON/OFF pin logic input
current
VLOGIC=2.5V (OFF)
-0.1
IL
ON/OFF pin input current VLOGIC=0.5V (ON)
-1
uA
ΘJC
Thermal Resistance
SOP-7L Junction to case
20
oC/W
ΘJA
Thermal Resistance
With copper area of
approximately 0.5 in
2
SOP-7L
Junction to
ambient
50
oC/W



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