AOZ1282CI
Absolute Maximum Ratings
Exceeding the Absolute Maximum Ratings may damage the
device.
Recommended Operating Conditions
The device is not guaranteed to operate beyond the
Recommended Operating Conditions.
Parameter
Supply Voltage (VIN)
Rating
Parameter
Supply Voltage (VIN)
Output Voltage (VOUT
Rating
40V
4.5V to 36V
0.8V to VVIN
LX to GND
-0.7V to VVIN+ 0.3V
-0.3V to 40V
-0.3V to 6V
VLX + 6V
)
EN to GND
Ambient Temperature (TA)
-40°C to +85°C
FB to GND
Package Thermal Resistance (JA)
SOT23-6L
55°C/W
BST to GND
Junction Temperature (TJ)
Storage Temperature (TS)
ESD Rating(1)
Note:
+150°C
-65°C to +150°C
2kV
1. Devices are inherently ESD sensitive, handling precautions are
required. Human body model rating: 1.5k
Ω in series with 100pF.
Electrical Characteristics
TA = 25 °C, VIN = VEN = 12V, unless otherwise specified. Specifications in BOLD indicate a temperature range of -40°C to +85°C.
These specifications are guaranteed by design.
Symbol
Parameter
Supply Voltage
Conditions
Min.
4.5
Typ.
Max.
Units
VIN
36
V
VUVLO
Input Under-Voltage Lockout Threshold
VIN rising
VIN falling
2.9
V
V
2.3
UVLO Hysteresis
260
mV
mA
A
IIN
Supply Current (Quiescent)
Shutdown Supply Current
Feedback Voltage
IOUT = 0, VFB = 1V, VEN > 1.2V
VEN = 0V
1
1.5
8
IOFF
VFB
TA = 25ºC
784
800
0.5
816
mV
%
VFB_LOAD Load Regulation
VFB_LINE Line Regulation
120mA < Load < 1.08A
Load = 600mA
0.03
500
%/V
nA
IFB
Feedback Voltage Input Current
VFB = 800mV
ENABLE
VEN_OFF EN Input Threshold
VEN_ON
Off threshold
On threshold
0.4
V
V
1.2
VEN_HYS EN Input Hysteresis
200
mV
IEN
Enable Input Current
3
A
MODULATOR
fO
Frequency
Maximum Duty Cycle
360
1.5
450
87
540
kHz
%
DMAX
TON_MIN Minimum On Time
150
1.9
ns
A
ILIM
Current Limit
Over-Temperature Shutdown Limit
TJ rising
TJ falling
150
110
°C
°C
TSS
Soft Start Interval
1.5
ms
POWER STATE OUTPUT
ILEAKAGE NMOS Leakage
RDS(ON) NMOS On-Resistance
VEN = 0V, VLX = 0V
VIN = 12V
10
A
420
mꢀ
Rev. 0.5 September 2012
www.aosmd.com
Page 3 of 13
AOS [ ALPHA & OMEGA SEMICONDUCTORS ]
