PRODUCT DATASHEET
AAT1217
SwitchRegTM
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Electrical Characteristics1
VIN = 1.2V, VOUT = 3.3V, TA = 25°C, unless otherwise noted.
Symbol Description
Conditions
Min
Typ
Max
Units
Minimum Start-Up Voltage
Minimum Operating Voltage
Output Voltage Range
IOUT = 1mA
VSHDN = VIN
0.85
0.5
1
0.65
5.5
VIN
V
V
2.5
-4
VOUT
VFB
IOUT = 10mA; TA = -40°C to
+85°C
TA = -40°C to +85°C
VIN = 1.2V to 2.4V, IOUT = 10mA,
VOUT = 3.3V
VIN = 2.4V to 4.2V, IOUT
10mA,VOUT = 5.0V
Output Voltage Accuracy3
Reference Voltage
+4
%
V
1.192
1.230
0.2
1.268
ΔVOUT
VOUT/ΔVIN
/
Reference Voltage Line
Regulation
%/V
=
0.4
VIN = 1.2V, IOUT = 10mA to
100mA, VOUT = 3.3V
VIN = 3.6V, IOUT = 10mA to
400mA, VOUT = 5.0V
0.003
0.004
ΔVOUT
/
Reference Voltage Load
%/mA
VOUT/ΔIOUT Regulation
Quiescent Current (Shutdown)
Quiescent Current (Active)
NMOS Switch Leakage
VSHDN = 0
Measured on VOUT, VSHDN = VIN
VSW = 5V
0.01
300
0.1
1
500
5
IQ
μA
ILNMOS
ILPMOS
μA
μA
PMOS Switch Leakage
VSW = 0V
0.1
5
NMOS Switch ON Resistance
VOUT = 3.3V
VOUT = 5V
VOUT = 3.3V
VOUT = 5V
0.35
0.30
0.60
0.55
1200
40
Ω
Ω
RDS(ON)L
RDS(ON)H
PMOS Switch ON Resistance
ICL
Δt(ICL)
NMOS Current Limit
Current Limit Delay to Output
750
mA
ns
DMAX
FOSC
VSHDN
ISHDN
TSD
Maximum Duty Cycle
VFB = 1.15V, TA = -40°C to +85°C
TA = -40°C to +85°C
80
85
%
MHz
V
Switching Frequency
SHDN Input Low
SHDN Input High
SHDN Input Current
0.9
1.2
1.5
0.35
1.00
VSHDN = 5.5V
Hysteresis
0.01
160
20
1
μA
°C
Thermal Shutdown
1. Specifications over the temperature range are guaranteed by design, characterization, and correlation with statistical process controls.
2. Not including the current into internal resistance divider.
3. For fixed 3.3V and 5.0V output voltage version. The adjustable output voltage is guaranteed by reference voltage accuracy.
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1217.2008.03.1.3