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| AAT1151 Datasheet, PDF (4/16 Pages) Advanced Analogic Technologies – 850kHz 700mA Synchronous Buck DC/DC Converter | |||
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AAT1151
850kHz 700mA Synchronous Buck DC/DC Converter
Electrical Characteristics1
VIN = VCC = VP = 5V, TA = -40°C to 85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol
VIN
VOUT
VUVLO
VUVLO(HYS)
IIL
IIH
IQ
ISHDN
ILIM
RDS(ON)H
RDS(ON)L
η
âVOUT (VOUT*âVIN)
âVOUT/VOUT
FOSC
VEN(L)
VEN(H)
TSD
THYS
Description
Input Voltage Range
Output Voltage Tolerance
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Input Low Current
Input High Current
Quiescent Supply Current
Shutdown Current
Current Limit
High Side Switch On Resistance
Low Side Switch On Resistance
Efficiency
Load Regulation
Line Regulation
Oscillator Frequency
Enable Threshold Low
Enable Threshold High
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Conditions
VIN = VOUT + 0.2 to 5.5V,
IOUT = 0 to 700mA
VIN Rising
VIN Falling
VIN = VFB = 5.5V
VIN = VFB = 0 V
No Load, VFB = 0 V, VIN = 4.2V
TA = 25°C
VEN = 0 V, VIN = 5.5V
TA = 25°C
TA = 25°C
TA = 25°C
IOUT = 300mA, VIN = 3.5V
VIN = 4.2V, ILOAD = 0 to 700mA
VIN = 2.7V to 5.5V
TA = 25°C
Min
2.7
-3.0
1.2
1.2
600
1.4
Typ
250
210
110
100
92
±0.9
±0.1
850
140
15
Max
5.5
+3.0
Units
V
%
2.5
V
mV
1.0 µA
1.0 µA
300 µA
1.0 µA
A
150 mâ¦
150 mâ¦
%
%
%/V
1200 KHz
0.6 V
V
°C
°C
1. The AAT1151 is guaranteed to meet performance specifications over the -40°C to +85°C operating range and is assured by design,
characterization, and correlation with statistical process controls.
4
1151.2005.11.1.4
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