Block Diagram
AOZ1015
VIN
EN
UVLO
5V LDO
Internal
OTP
& POR
Regulator
+5V
Reference
& Bias
Softstart
ILimit
+
ISen
–
0.8V
FB
COMP
+
EAmp
–
+
– PWM
Comp
+
PWM
Control
Logic
Level
Shifter
+
FET
Driver
0.2V
0.96V
Frequency
Foldback
+ Comparator
–
Over Voltage
Protection
+ Comparator
–
500kHz/63kHz
Oscillator
AGND
Q1
LX
PGND
Absolute Maximum Ratings
Exceeding the Absolute Maximum ratings may damage the
device.
Parameter
Rating
Supply Voltage (VIN)
LX to AGND
EN to AGND
FB to AGND
COMP to AGND
PGND to AGND
Junction Temperature (TJ)
Storage Temperature (TS)
ESD Rating(1)
Human Body Model
Machine Model
18V
-0.7V to VIN+0.3V
-0.3V to VIN+0.3V
-0.3V to 6V
-0.3V to 6V
-0.3V to +0.3V
+150°C
-65°C to +150°C
2kV
200V
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Parameter
Rating
Supply Voltage (VIN)
Output Voltage Range
Ambient Temperature (TA)
Package Thermal Resistance SO-8
(ΘJA)(2)
4.5V to 16V
0.8V to VIN
-40°C to +85°C
87°C/W
Note:
2. The value of ΘJA is measured with the device mounted on 1-in2 FR-4
board with 2oz. Copper, in a still air environment with TA = 25°C. The
value in any given application depends on the user’s specific board
design.
Note:
1. Devices are inherently ESD sensitive, handling precautions are
required. Human body model rating: 1.5kΩ in series with 100pF.
The machine model is a 200pF capacitor discharged directly into
each pin.
Rev. 1.2 September 2007
www.aosmd.com
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