AP1503 Ver la hoja de datos (PDF) - Anachip Corporation
Número de pieza
componentes Descripción
Fabricante
AP1503 Datasheet PDF : 5 Pages
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300Khz, 2.5A PWM Buck DC/DC Converter
AP1503
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.
FOSC Oscillator frequency
255
300
230
VSAT Saturation voltage
ISW=2A
VB=VIN+2.5V.
DC
Max. Duty Cycle (ON)
Min. Duty cycle (OFF)
VFB=0V force driver on
VFB=6V force driver off
Peak current
ICL Current limit
No outside circuit
3
VFB=0 force driver on
IL
Output = 0 Output
leakage
no outside circuit
VFB=6V force driver off
Output = -1 current
VIN=24V
VC
VB
IB
IQ
ISTBY
COMP Min SW threshold
2A ISW threshold
Min VB above switch
Boost current
Quiescent Current
Standby Quiescent
Current
Duty Cycle=0%,FB=3.5V
ISW=2A
ISW=1A
ISW=2A
VFB=6 force driver off
ON/OFF pin=5V
VIN=24V
VIL ON/OFF pin logic input Low (regulator ON)
-
VIH threshold voltage
High (regulator OFF)
2.0
IH
ON/OFF pin logic input
current
VLOGIC=2.5V (OFF)
IL
ON/OFF pin input current VLOGIC=0.5V (ON)
ΘJC Thermal Resistance
SOP-7L Junction to case
ΘJA
Thermal Resistance
With copper area of
approximately 0.5 in2
SOP-7L
Junction to
ambient
0.4
90
0
3.25
0.04
0.8
2.6
120
130
5
80
1.3
20
50
Max.
345
360
0.5
0.6
3.5
4
-1
-1
3
140
10
150
200
0.6
-
-0.1
-1
Unit
KHz
V
%
A
uA
mA
V
V
mA
mA
uA
V
uA
oC/W
oC/W
Anachip Corp.
www.anachip.com.tw
Rev.A3 Mar. 11, 2004
3/5
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