Specifications

Rev. 1.0 January 2012
www.aosmd.com
Page 7 of 7
AOZ197
8
Absolute Maximum Ratings
Exceeding the Absolute Maximum Ratings may damage the
device.
Parameter Rating
VIN to GND -0.3V to +20V
GATE1, DPWM1, GATE2,
DPWM2 to GND
-0.3V to +20V
COMP1, OVP1, DBRT1, CS1,
FB1, ISET COMP2, OVP2,
DBRT2, CS2, FB2, SCP, FLAG
to GND
-0.3V to +6V
Storage Temperature (T
S
) -65°C to +150°C
ESD Rating
(1)
2kV
Note:
1. Devices are inherently ESD sensitive, handling precautions are
required. Human body model rating: 1.5kΩ in series with 100pF.
Recommended Operating Ratings
This device is not guaranteed to operate beyond the
Recommended Operating Ratings.
Parameter Rating
Supply Voltage (V
VIN
) 8V to 18V
Ambient Temperature (T
A
) -40°C to +85°C
Package Thermal Resistance
SOIC-20 (

JA
)
105°C/W
Electrical Characteristics
T
A
= 25°C, V
IN
= 12V unless otherwise specified. Specifications in BOLD indicate an ambient temperature range of
-40°C to +85°C.
Symbol Parameter Conditions Min. Typ. Max Units
V
VIN
VIN Supply Voltage
8 18
V
I
VIN
_
ON
VIN Quiescent Current 2 mA
V
UVLO_RISE
V
UVLO_FALL
VIN UVLO Threshold
VIN rising
VIN falling 6.2
7
6.5
7.3
V
V
VIN
_
HYS
VIN UVLO Hysteresis 500 mV
Oscillator
F
SW
Switching Frequency 170 200 230 kHz
T
ON
Minimum ON Time (PWM) 150 200 ns
GATE1 and GATE2 Driver
I
GATE_SOURCE
Source Current GATE1 or GATE2 = 0V 350 mA
I
GATE_SINK
Sink Current GATE1 or GATE2 = 12V 600 mA
T
GATE_RISE
Rise Time
C
GATE
= 1nF
10% to 90% of VIN
50 85 ns
T
GATE_FALL
Fall Time
C
GATE
= 1nF
90% to 10% of VIN
25 45 ns
Inputs
I
ISET
ISET Input Current ISET = 0.6V 5 µA
I
CS
CS Input Current CS1 or CS2 = 0.3V 5 µA
I
SCP
SCP Current SCP = 1.2V 5 µA
I
DBRT
DBRT Input Current DBRT1 or DBRT2 = 5V 5 µA
I
OVP
OVP Input Current OVP1 or OVP2 = 1.2V 5 µA
I
FB
FB Input Current FB1 or FB2 = 0.5V 5 µA
F
DBRT
DBRT Dimming Frequency
DBRT1 or DBRT2 duty cycle
from 1% to 99%
100 2000 Hz
Outputs
ISET
VOUT
ISET Output Voltage 0.5V 488 500 512 mV
ISET
SRC
ISET Output Source Current ISET = GND 10 µA
I
FLAG_SINK
FLAG Output Sink Current FLAG = 0.5V 1 mA