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| AAT1102 Datasheet, PDF (3/18 Pages) Advanced Analog Technology, Inc. – ADVANCED PWM DC-DC CONVERTER WITH INTERNAL SWITCH AND SOFT-START | |||
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Advanced Analog Technology, Inc.
AAT1102
ELECTRICAL CHARACTERISTICS
VDD = SHDN = 3V , FREQ = GND, unless otherwise specified. Typical values are at TC = +25oC )
PARAMETER
Input Supply Voltage
Range
VDD Under Voltage
Lockout
Quiescent Current
Shutdown Current
SYMBOL
VDD
CONDITIONS
MIN TYP MAX UNITS
2.6
5.5 V
When VDD is rising, typical
UVLO hysteresis is 40mV; SW 2.25 2.38 2.52 V
remains off below this level
I DD
VIN = 1.3V, not switching
VIN = 1.0V, switching
I SC
SHDN = GND
0.21 0.35
mA
1.2 5.0
0.1 10.0 µA
ERROR AMPLIFIER
PARAMETER
Feedback Voltage
VDD Input Bias Current
Feedback-Voltage Line
Regulation
Transconductance
Voltage Gain
SYMBOL
VIN
I IN
gm
AV
CONDITIONS
Level to produce VEO
1.24V
VIN= 1.24V
Level to produce VEO
1.24V,
2.6V < VDD < 5.5V
âI = 5 µA
MIN
= 1.222
=
70
TYP
1.240
0
0.05
105
1,500
MAX
1.258
40
0.15
240
UNITS
V
nA
%/V
µA /V
V/V
OSCILLATOR
PARAMETER
Frequency
Maximum Duty Cycle
SYMBOL
f OSC
D MAX
CONDITIONS
FREQ = GND
FREQ = VDD
FREQ = GND
FREQ = VDD
MIN
540
1,100
79
TYP
640
1,320
85
85
MAX UNITS
740
1,600 kHz
92
%
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Page 3 of 18
V4.0
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