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AP1551 Fiches technique(PDF) 3 Page - Anachip Corp

No de pièce AP1551
Description  150KHz, Dual Channel 2A PWM Buck DC/DC Converter
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Fabricant  ANACHIP [Anachip Corp]
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Logo ANACHIP - Anachip Corp

AP1551 Fiches technique(HTML) 3 Page - Anachip Corp

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AP1551
150KHz, Dual Channel 2A PWM Buck DC/DC Converter
Anachip Corp.
www.anachip.com.tw
Rev. 1.0 Nov 17, 2004
3/8
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VCC
Supply Voltage
+24
V
VSD
ON/OFF Pin input voltage
-0.3 to +18
V
VFB
Feedback Pin voltage
-0.3 to +18
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
+4.5 to +22
V
Electrical Characteristics
Unless otherwise specified, VIN=12V, ILOAD = 0.5A
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
-50
IB1/2
Feedback bias current
VFB1/2=1.3V
(Adjustable version only)
-
-10
-100
nA
127
150
173
FOSC
Oscillator frequency
110
-
173
KHz
FSCP
Oscillator frequency of
short circuit protect
When current limit occurred
and VFB1/2 < 0.5V, Ta=25
oC
5
15
25
KHz
1.4
VSAT1/2
Saturation voltage
IOUT1/2=2A
No outside circuit
VFB1/2=0V force driver on
-
1.25
1.5
V
Max. Duty Cycle (ON)
VFB1/2=0V force driver on
-
100
-
DC
Min. Duty Cycle (OFF)
VFB1/2=12V force driver off
-
0
-
%
ICL1/2
Current limit for each
channel
Peak current
No outside circuit
VFB1/2=0V force driver on
3
-
-
A
Output = 0
No outside circuit
VFB1/2=12V force driver off
-
-
-200
uA
IL1/2
Output = -1
Output
leakage
current
VIN1/2=22V
-
-5
mA
IQ1/2
Quiescent Current
VFB1/2=12V force driver off
-
5
10
mA
150
ISTBY1/2
Standby Quiescent
Current
ON/OFF pin=5V
VIN1/2=22V
-
70
200
uA
VIL1/2
Low (regulator ON)
-
0.6
VIH1/2
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)
-
-
-0.01
IL
ON/OFF pin input current VLOGIC=0.5V (ON)
-
-0.1
-1
uA
θJC
Thermal Resistance
SOP-16L
Junction to
case
-
15
-
oC/W
θJA
Thermal Resistance
With copper area of
approximately 3 in
2
SOP-16L
Junction to
ambient
-
70
-
oC/W


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