AAT1157IVN-T1 View Datasheet(PDF) - Analog Technology Inc
Part Name
Description
MFG CO.
'AAT1157IVN-T1' PDF : 14 Pages View PDF
AAT1157
1MHz 1.2A 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
Description
Conditions
VIN
VOUT
∆VOUT/VOUT
∆VOUT(VOUT*∆VIN)
IQ
ISHDN
ILIM
VUVLO
VUVLO(HYS)
VIL
VIH
IIL
IIH
RDS(ON)H
RDS(ON)L
FOSC
TSD
Input Voltage Range
Output Voltage Tolerance
Load Regulation
Line Regulation
Quiescent Supply Current
Shutdown Current
Current Limit
Under-Voltage Lockout
Under-Voltage Lockout Hysteresis
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
High Side Switch On Resistance
Low Side Switch On Resistance
Oscillator Frequency
Over-Temperature Shutdown
Threshold
VIN = VOUT + 0.2 to 5.5V,
IOUT = 0 to 1.2A
VIN = 4.2V, ILOAD = 0 to 1.2A
VIN =2.7 to 5.5V
No Load
VEN = 0V, VIN = 5.5V
TA = 25°C
VIN Rising, VEN = VCC
VIN Falling, VEN = VCC
VIN = VFB = 5.5V
VIN = VFB = 0V
TA = 25°C
TA = 25°C
TA = 25°C
THYS
Over-Temperature Shutdown
Hysteresis
Min Typ Max Units
2.7
5.5
V
-4
+4
%
±2.5
%
±0.1
%/V
160 300 µA
1.0 µA
1.7
A
2.5
V
1.2
250
mV
0.6
V
1.4
V
1.0 µA
1.0 µA
110 150 mΩ
100 150 mΩ
750 1000 1250 kHz
140
°C
15
°C
1. The AAT1157 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
4
1157.2005.11.1.4
Share Link: 
