AAT1106
600mA Step-Down Converter
Electrical Characteristics
VIN = VEN = 3.6V, TA = 25°C, unless otherwise noted.
Symbol Description
Conditions
Min
Typ
Max Units
Step-Down Converter
VIN
Input Voltage Range
2.5
5.5
400
1.0
V
Active Mode, VFB = 0.5V
Shutdown Mode, VFB = 0V, VIN = 4.2V
TA = 25°C
TA = 0°C ≤ TA ≤ +85°C
TA = -40°C ≤ TA ≤ +85°C
VFB = 0.65V
270
0.08
IQ
Input DC Supply Current
µA
0.5880 0.6000 0.6120
0.5865 0.6000 0.6135
0.5850 0.6000 0.6150
-30
1.455
1.746
VFB
Regulated Feedback Voltage
V
IFB
FB Input Bias Current
Regulated Output Voltage
Output Voltage Line
30
1.545
1.854
nA
V
AAT1106ICB-1.5, -40°C ≤ TA ≤ 85°C
AAT1106ICB-1.8, -40°C ≤ TA ≤ 85°C
1.500
1.800
VOUT
∆VOUT
/
VIN = 2.5V to 5.5V, IOUT = 10mA
IOUT = 10mA to 600mA
0.11
0.40
%/V
VOUT/∆VIN Regulation
∆VOUT Output Voltage Load
VOUT/∆IOUT Regulation
/
0.0015
%/mA
ILIM
FOSC
Maximum Output Current
Oscillator Frequency
VIN = 3.0V
600
1.2
mA
MHz
VFB = 0.6V or VOUT = 100%
From Enable to Output
Regulation
ILX = 300mA
ILX = 300mA
1.5
1.8
TS
Startup Time
100
µs
Ω
A
P-Channel MOSFET
N-Channel MOSFET
0.30
0.20
0.50
0.45
RDS(ON)
VIN = 3V, VFB = 0.5V or VOUT = 90%;
Peak Inductor Current
1.20
60
Duty Cycle <35%
Output Over-Voltage Lockout ∆VOVL = VOVL - VFB
Enable Threshold Low
Enable Threshold High
Input Low Current
mV
V
V
VEN(L)
VEN(H)
IEN
0.4
1.0
1.4
-1.0
µA
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
TSD
150
15
°C
°C
THYS
1. 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.
4
1106.2007.07.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
