ap1509-s Diodes, Inc., ap1509-s Datasheet - Page 4

• Manufacturer Part Number: ap1509-s
• Description: 150khz, 2a Pwm Buck Dc/dc Converter
• Manufacturer: Diodes, Inc.

Electrical Characteristics
Unless otherwise specified, V
Specifications with boldface type are for full operating temperature range, the other type are for T
AP1509 Rev. 2
Symbol
F
F
V
I
DC
STBY
V
θ
θ
V
I
I
OSC
I
I
SCP
I
I
FB
SAT
CL
Q
H
JA
JC
L
L
IH
IL
Feedback Bias Current
Oscillator Frequency
Oscillator Frequency of
Short Circuit Protect
Saturation Voltage
Max. Duty Cycle (ON)
Min. Duty Cycle (OFF)
Current Limit
Output = 0
Output = -1
Quiescent Current
Standby Quiescent
Current
ON/OFF Pin Logic Input
Threshold Voltage
ON/OFF Pin Logic Input
Current
ON/OFF Pin Input Current V
Thermal Resistance
Thermal Resistance
with a copper area of
approximately 3 in
Parameter
IN
= 12V for 3.3V, 5V, adjustable version and V
Output
Leakage
Current
2
V
(Adjustable version only)
When current limit occurred
and V
I
No outside circuit
V
V
V
Peak current
No outside circuit
V
No outside circuit
V
V
V
ON/OFF pin = 5V
V
Low (regulator ON)
High (regulator OFF)
V
SOP-8L
SOP-8L
OUT
(All Output Voltage Versions)
FB
FB
FB
FB
FB
FB
IN
FB
IN
LOGIC
LOGIC
www.diodes.com
= 22V
= 22V
= 1.3V
= 0V force driver on
= 0V force driver on
= 12V force driver off
= 0V force driver on
= 12V force driver off
= 12V force driver off
= 2A
FB
= 2.5V (OFF)
= 0.5V (ON)
< 0.5V, T
Conditions
4 of 12
150KHz, 2A PWM BUCK DC/DC CONVERTER
Junction to
case
Junction to
ambient
a
= 25
IN
= 18V for the 12V version. I
o
C
Min.
127
110
2.0
10
3
-
J
= 25ºC.
Typ.
1.25
150
100
-0.1
-10
1.3
30
70
15
70
-5
0
5
LOAD
= 0.5A
©
FEBRUARY 2008
Max.
-0.01
-100
-200
173
173
150
200
AP1509
-50
1.4
1.5
0.6
50
10
Diodes Incorporated
-1
-
o
o
Unit
KHz
KHz
mA
C/W
C/W
mA
nA
uA
uA
uA
%
V
A
V