Diodes AUR9717 - Manual (Page 5)

Data Sheet
Dual 1A, 1.5MHz PWM Step-down DC-DC Converter with OVP AUR9717
Oct. 2011 Rev. 1.0 BCD Semiconductor Manufacturing Limited
5
Electrical Characteristics
V
IN
=V
EN1
=V
EN2
=5V, V
FB1
=V
FB2
=0.6V, L1=L2=2.2 μH, C
IN1
=C
IN2
=4.7 μF, C
OUT1
=C
OUT2
=10 μF, T
A
=25°C,
unless otherwise specified.
Parameter Symbol Conditions Min Typ Max Unit
Input Voltage Range V
IN
V
IN
=V
IN1
=V
IN2
2.5 5.5 V
Shutdown Current I
OFF
V
EN1
=V
EN2
=0V 0.1 1 μA
Regulated Feedback
Voltage
V
FB
For Adjustable Output Voltage 0.585 0.6 0.615 V
Regulated Output
Voltage Accuracy ΔV
OUT1
/V
OUT1,
ΔV
OUT2
/V
OUT2
V
IN
=2.5V to 5.5V,
I
OUT1
=I
OUT2
=0 to 1A
-3 3 %
Peak Inductor
Current
I
PK
V
FB1
=V
FB2
=0.5V 1.5 A
Oscillator Frequency f
OSC
1.2 1.5 1.8 MHz
PMOSFET R
ON
R
ON(P)
I
OUT1
=I
OUT2
=200mA 0.28 Ω
NMOSFET R
ON
R
ON(N)
I
OUT1
=I
OUT2
=200mA 0.25 Ω
LX Leakage Current I
LX
V
EN1
=V
EN2
=0V,
V
LX1
=V
LX2
=0V or 5V
0.01 0.1 μA
Feedback Current I
FB1,
I
FB2
30 nA
Input Over Voltage
Protection
V
IOVP
6 V
EN Leakage Current I
EN1,
I
EN2
0.01 0.1 μA
EN High-level Input
Voltage
V
EN_H1,
V
EN_H2
V
IN
=2.5V to 5.5V 1.5 V
EN Low-level Input
Voltage
V
EN_L1,
V
EN_L2
V
IN
=2.5V to 5.5V 0.6 V
Under Voltage Lock
Out
V
UVLO
Rising 1.8 V
Hysteresis Hysteresis 0.1 V
Thermal Shutdown T
SD
160 °C