AP1513
PWM CONTROL 2A STEP-DOWN CONVERTER
AP1513 Rev. 4 4 of 9 JULY 2009
DS31053 www.diodes.com © Diodes Incorporated
Electrical Characteristics (VIN = 12V, T
A
= 25°C, unless otherwise specified)
Symbol Parameter Conditions Min. Typ. Max. Unit
V
FB
Feedback Voltage I
OUT
= 0.1A 0.784 0.8 0.816 V
I
FB
Feedback Bias Current I
OUT
= 0.1A - 0.1 0.5 µA
I
SW
Switch Current -- 2.5 - - A
I
SSS
Current Consumption
During Power Off
V
EN
= 0V - 10 - µA
∆V
OUT
/V
OUT
Line Regulation V
IN
= 5V~18V - 1 2 %
∆V
OUT
/V
OUT
Load Regulation I
OUT
= 0.1 to 2A - 0.2 0.5 %
f
OSC
Oscillation Frequency Measure waveform at SW pin 240 300 400 KHz
f
OSC1
Frequency of Current Limit
or Short Circuit Protect
Measure waveform at SW pin 10 - - KHz
V
SH
EN Pin Input Voltage
Evaluate oscillation at SW pin 2.0 - -
V
V
SL
Evaluate oscillation stop at SW pin - - 0.8
I
SH
EN Pin Input Leakage
Current
-- - 20 - µA
I
SL
-- - -10 - µA
I
OCSET
OCSET Pin Bias Current -- 75 90 105 µA
T
SS
Soft-Start Time -- 0.3 2 5 ms
R
DSON
Internal MOSFET Rdson
V
IN
= 5V, V
FB
= 0V - 110 150
mΩ
V
IN
= 12V, V
FB
= 0V - 70 100
EFFI Efficiency
V
IN
= 12V, V
OUT
= 5V
I
OUT
= 2A
- 92 - %
θ
JA
Thermal Resistance
Junction-to-Ambient
SOP-8L (Note 3) - 134 -
o
C/W
θ
JC
Thermal Resistance
Junction-to-Case
SOP-8L (Note 3) - 22 -
o
C/W
Notes: 3. Test conditions: Device mounted on FR-4 PCB, 2"*2", 2oz copper minimum recommended pad layout, single-sided, PC boards.
