Data sheet, Electrical characteristics – Diodes AP3417A User Manual
Page 5
Data Sheet
1A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter AP3417A
Aug. 2012 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=5V, T
A
=25
ºC
, unless otherwise specified.
Parameters Symbol
Conditions Min
Typ
Max
Unit
Input Voltage
V
IN
2.5 5.5 V
Quiescent Current
I
Q
V
FB
=0.65V
62
100
µA
Shutdown Supply Current
I
STBY
V
EN
=GND
0.1
1
µA
Reference Voltage
V
REF
For Adjustable Output
Voltage
0.588 0.6 0.612 V
Feedback Bias Current
I
FB_H
V
FB
=1V -0.1
0.1
µA
I
FB_L
V
FB
=0V -0.1
0.1
PMOSFET R
ON
R
DS(ON)_ P
I
SW
= 200mA
0.25
Ω
NMOSFET R
ON
R
DS(ON) _N
I
SW
= -200mA
0.2
Ω
Switch Current Limit
I
LIM
V
FB
=0.55V 1.3
1.8
A
EN Pin Threshold
V
H
1.5
V
V
L
0.4
UVLO Threshold
V
UVLO
V
IN
Rising
2.3
V
UVLO Hysteresis
V
HYS
0.2
Oscillator Frequency
F
OSC
1.12 1.40 1.68 MHz
Max. Duty Cycle
D
MAX
100
%
Min. Duty Cycle
D
MIN
0
SW Leakage Current
I
SW_H
V
SW
=0V
0.1
µA
I
SW_L
V
SW
=5V
0.1
Soft-start Time
t
SS
1
ms
Thermal Shutdown
T
OTSD
160
ºC
Thermal Shutdown
Hysteresis
T
HYS
20
ºC