AAT2500
1MHz Step-Down Converter/LDO Regulator
Typical Characteristics
Unless otherwise noted, VIN = 5V, TA = 25°C.
LDO Dropout Voltage vs. Temperature
(EN = GND; ENLDO = VIN)
LDO Dropout Characteristics
(EN = GND; ENLDO = VIN)
540
480
420
360
300
240
180
120
60
3.20
3.00
2.80
2.60
2.40
2.20
2.00
IL = 300mA
IOUT = 0mA
IL = 100mA
IL = 150mA
IOUT = 300mA
IOUT = 150mA
IOUT = 100mA
IOUT = 50mA
IOUT = 10mA
2.80
IL = 50mA
0
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100 110 120
2.70
2.90
3.00
3.10
3.20
3.30
Temperature (°C)
Input Voltage (V)
LDO Ground Current vs. Input Voltage
(EN = GND; ENLDO = VIN)
LDO Dropout Voltage vs. Output Current
(EN = GND; ENLDO = VIN)
90.00
500
450
400
350
300
250
200
150
100
50
80.00
70.00
60.00
50.00
40.00
30.00
20.00
10.00
0.00
IOUT=300mA
IOUT=150mA
85°C
25°C
IOUT=50mA
IOUT=0mA
-40°C
IOUT=10mA
0
0
50
100
150
200
250
300
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Output Current (mA)
LDO Output Voltage vs. Temperature
(EN = GND; ENLDO = VIN)
LDO Initial Power-Up Response Time
(CBYP = 10nF; EN = GND; ENLDO = VIN)
1.203
1.202
1.201
1.200
1.199
1.198
1.197
1.196
VENLDO (5V/div)
VOUT (1V/div)
-40 -30 -20 -10
0
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
400μs/div
6
2500.2006.05.1.16
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
