Diodes AP3435 - Manual (Page 5)

Preliminary Datasheet
1.0MHz, 3.5A, Synchronous Step Down DC-DC Converter AP3435
Dec. 2012 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=V
CC
=V
EN
=5V, V
OUT
=1.2V, V
FB
=0.8V, L=2.2 μH, C
IN
=10 μF, C
OUT
=22 μF, T
A
=25°C, unless otherwise
specified.
Parameter Symbol Conditions Min Typ Max Unit
Input Voltage
Range
V
IN
2.7 5.5 V
Shutdown Current I
OFF
V
EN
=0 1 μA
Active Current I
ON
V
FB
=0.95V 310 μA
Regulated Feedback
Voltage
V
FB
For Adjustable Output Voltage 0.784 0.8 0.816 V
Regulated Output
Voltage Accuracy
ΔV
OUT
/V
OUT
V
IN
=2.7V to 5.5V,
I
OUT
=0 to 3.5A
-3 3 %
Peak Inductor
Current
I
PK
4.5 A
Oscillator
Frequency
f
OSC
V
IN
=2.7V to 5.5V 1.0 MHz
PMOSFET RON R
ON(P)
V
IN
=5V 100 m Ω
NMOSFET RON R
ON(N)
V
IN
=5V 100 m Ω
EN High-level Input
Voltage
V
EN_H
1.5 V
EN Low-level Input
Voltage
V
EN_L
0.4 V
EN Input Current I
EN
1 μA
Soft Start Time t
SS
400 μs
Maximum Duty
Cycle
D
MAX
100 %
Under Voltage Lock
Out Threshold
V
UVLO
Rising 2.4
V Falling 2.3
Hysteresis 0.1
Thermal Shutdown T
SD
Hysteresis=30°C 150 °C
Input Over Voltage
Protection (IOVP)
V
IOVP
Rising 5.8 5.9 6.0 V
Hysteresis 0.3 0.4 0.5 V