AP1509 データシートの表示（PDF） - Diodes Incorporated.
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AP1509 Datasheet PDF : 13 Pages
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AP1509
150KHz, 2A PWM BUCK DC/DC CONVERTER
Electrical Characteristics
Unless otherwise specified, VIN = 12V for 3.3V, 5V, adjustable version and VIN = 18V for the 12V version. ILOAD = 0.5A
Specifications with boldface type are for full operating temperature range, the other type are for TJ = 25ºC.
Symbol
Parameter
Conditions
Min
Typ.
Max
Unit
IFB
Feedback Bias Current
VFB = 1.3V
(Adjustable version only)
-10
-50
-100
nA
FOSC Oscillator Frequency
127
110
150
173
173
KHz
FSCP
Oscillator Frequency of
Short Circuit Protect
When current limit occurred
and VFB < 0.5V, Ta = 25 oC
10
30
50
KHz
IOUT = 2A
1.4
VSAT Saturation Voltage
No outside circuit
VFB = 0V force driver on
1.25
1.5
V
DC
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
VFB = 0V force driver on
VFB = 12V force driver off
100
0
%
Peak current
ICL Current Limit
No outside circuit
3
A
VFB = 0V force driver on
IL
Output = 0
Output
Leakage
No outside circuit
VFB = 12V force driver off
Output = -1 Current
VIN = 22V
-200
uA
-5
mA
IQ Quiescent Current
VFB = 12V force driver off
5
10
mA
ISTBY
Standby Quiescent
Current
ON/OFF pin = 5V
VIN = 22V
70
150
200
uA
VIL
Low (regulator ON)
ON/OFF Pin Logic Input
VIH Threshold Voltage
High (regulator OFF)
-
0.6
2.0
1.3
-
V
IH
ON/OFF Pin Logic Input
Current
VLOGIC = 2.5V (OFF)
IL
ON/OFF Pin Input Current VLOGIC = 0.5V (ON)
θJA Thermal Resistance
SOP-8L
Junction to
case
Thermal Resistance
θJC with a copper area of
approximately 3 in2
SOP-8L
Junction to
ambient
-0.01
uA
-0.1
-1
15
oC/W
70
oC/W
AP1509
Document number: DS31016 Rev. 4 - 2
5 of 13
www.diodes.com
June 2010
© Diodes Incorporated
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