Diodes AUR9703 - Manual (Page 5)

Data Sheet
1.5MHz, 800mA, STEP DOWN DC-DC CONVERTER AUR9703
Nov. 2011 Rev. 1 .0 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=5V, V
OUT
=3.3V, V
FB
=0.6V, L=2.2 µH, C
IN
=4.7 µF, C
OUT
=10 µF, T
A
=25°C, I
MAX
=800mA. Unless
otherwise specified.
Parameter Symbol Conditions Min Typ Max Unit
Input Voltage Range V
IN
2.5 5.5 V
Shutdown Current I
OFF
V
EN
=0 0.1 1 µA
Regulated 1 Feedback
Voltage
V
FB
For Adjustable Output Voltage 0.585 0.6 0.615 V
Regulated Output
Voltage Accuracy
∆V
OUT
/V
OUT
V
IN
=2.5V to 5.5V,
I
OUT
=0 to 800mA
-3 3 %
Peak Inductor
Current
I
PK
V
IN
=5V, V
FB
=0.5V 1.2 A
Oscillator Frequency f
OSC
V
IN
=5V 1.2 1.5 1.8 MHz
PMOSFET R
ON
R
ON(P)
V
IN
=5V, I
OUT
=200mA 0.25 Ω
NMOSFET R
ON
R
ON(N)
V
IN
=5V, I
OUT
=200mA 0.27 Ω
Quiescent Current I
Q
I
OUT
=0A, V
FB
= 0.7V 100 µA
LX Leakage Current I
LX
V
EN
=0V, V
LX
=0V or 5V,
V
IN
=5V
0.1 1 µA
Feedback Current I
FB
30 nA
Soft Start Time t
SS
200 µs
EN Leakage Current I
EN
0.01 0.1 µA
EN High-level Input
Voltage
V
EN_H
V
IN
=2.5V to 5.5V 1.5 V
EN Low-Level Input
Voltage
V
EN_L
V
IN
=2.5V to 5.5V 0.6 V
Under Voltage Lock
Out
V
UVLO
1.8 V
Hysteresis 0.1 V
Thermal Shutdown T
SD
160 °C