ML4854IT Fairchild, ML4854IT Datasheet - Page 5

• Manufacturer Part Number: ML4854IT
• Description: Adjustable / Low-Current / 2-Cell Boost Regulator with Shutdown and Low Battery Detect
• Manufacturer: Fairchild

ML4854
Typical Operating Characteristics
REV. 1.0.7 5/6/03
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
500
400
300
200
100
0.0
5
4
3
2
1
0
1.5
0.1
0
0.2
Starting Up and turning Off VOUT=5V
Vin=3V
Maximum Steady State Load
0.4
Efficiency vs. Load Current
Vin=2.0V
Current vs. Input Voltage
2
1
Input (Battery) Voltage, V
V
OUT
V
0.6
Iload=10mA/50mA
load=50mA
Output Current, mA
OUT
Input Voltage, V
TURN OFF:
Iload=10mA
= 3.3V
Vout = 5V
= 5V
0.8
10
2.5
Vin=1.5V
1
1.2
100
3
1.4
START UP:
Iload=50mA
Iload=10mA
1.6
1000
(L=10µH, C
1.8
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
300
250
200
150
100
3.5
2.5
1.5
0.5
0.0
50
4
3
2
1
0
IN
0
0.1
0
0
=47µF, C
TURN OFF:
Iload=10mA
No-Load Battery Current vs. Input Battery
Starting Up and Turning Off VOUT=3.3V
1.2 1.4 1.6 1.8
0.2
Vin=3V
Shut Down
0.4
Efficiency vs. Load Current
OUT
1
Vin=2.0V
Input (Battery) Voltage, V
Iload=10mA/50mA
Output Current, mA
0.6 0.8
=47µF//1.0µF T=25°C)
Battery Voltage, V
Vout = 3.3V
load=50mA
Voltage
10
2
Vout=3.3V
Vin=1.5V
1.0
Vout=5V
2.2 2.4 2.6 2.8 3.0
1.2
PRODUCT SPECIFICATION
100
1.4
Iload=10mA
START UP
Iload=50mA
1.6 1.8
1000
5