aoz1240 Alpha & Omega Semiconductor, aoz1240 Datasheet - Page 4

• Manufacturer Part Number: aoz1240
• Description: Ezbucktm 2a Simple Buck Regulator
• Manufacturer: Alpha & Omega Semiconductor

Electrical Characteristics
T
Note:
3. Specification in BOLD indicate an ambient temperature range of -40°C to +85°C. These specifications are guaranteed by design.
ENABLE
MODULATOR
PROTECTION
PWM OUTPUT STAGE
A
Symbol
Rev. 1.3 September 2010
R
= 25°C, V
V
D
V
G
D
DS(ON)
I
V
G
V
I
V
UVLO
OFF
I
f
t
I
MAX
LIM
HYS
f
FB
MIN
VEA
SC
SS
IN
EN
FB
O
EA
IN
IN
Supply Voltage
Input Under-Voltage Lockout Threshold
Supply Current (Quiescent)
Shutdown Supply Current
Feedback Voltage
Load Regulation
Line Regulation
Feedback Voltage Input Current
EN Input Threshold
EN Input Hysteresis
Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Error Amplifier Voltage Gain
Error Amplifier Transconductance
Current Limit
Over-Temperature Shutdown Limit
Short Circuit Hiccup Frequency
Soft Start Interval
High-Side Switch On-Resistance
High-Side Switch Leakage
= V
EN
= 12V, unless otherwise specified
Parameter
(3
www.aosmd.com
)
I
T
V
V
V
V
Off Threshold
On Threshold
T
V
OUT
J
J
IN
IN
EN
FB
EN
Rising
Falling
Rising
Falling
= 0V
= 0V
= 0V, V
= 0, V
Conditions
FB
LX
= 1.2V, V
= 0V
EN
> 2V
0.782
Min.
315
4.5
2.5
2.5
85
Typ.
0.08
200
370
500
200
145
100
4.3
4.1
0.8
0.5
24
70
2
3
4
Max.
0.818
200
425
100
0.6
4.5
32
20
10
AOZ1240
3
6
Page 4 of 15
Units
µA / V
% / V
V / V
kHz
kHz
m
mA
mV
µA
nA
ms
µA
°C
%
%
%
V
V
V
V
A
Ω