lt1303-5 Linear Technology Corporation, lt1303-5 Datasheet - Page 4

• Manufacturer Part Number: lt1303-5
• Description: Micropower High Efficiency Dc/dc Converters With Low-battery Detector Adjustable And Fixed 5v
• Manufacturer: Linear Technology Corporation

LT1303/LT1303-5
AC COUPLED
4
I
TYPICAL PERFORMANCE CHARACTERISTICS
LOAD
100mV/DIV
200
190
180
170
160
150
140
130
120
110
100
200mA
V
8
7
6
5
4
3
2
0mA
–50
OUT
–50
Switch On-Time
Quiescent Current
SWITCH OFF
V
V
V
Transient Response
Figure 1 Circuit
IN
IN
OUT
= 2V
–25
= 2V
–25
= 5V
TEMPERATURE ( C)
TEMPERATURE ( C)
0
0
200 s/DIV
25
25
50
50
W
75
75
LT1303 G13
LT1303 G10
U
LT1303 G16
100
100
5V/DIV
1V/DIV
V
SHDN
V
OUT
5V
200
190
180
170
160
150
140
130
120
110
100
500
400
200
100
300
Shutdown Pin Response
R
V
V
C
0
LOAD
IN
OUT
OUT
–50
Oscillator Frequency
Quiescent Current
0
= 2V
= 5V
= 100 F
T
SWITCH OFF
= 100
A
= 25 C
–25
2
TEMPERATURE ( C)
INPUT VOLTAGE (V)
0
500 s/DIV
4
25
6
50
8
LT1303 G17
75
LT1303 G11
LT1303 G14
100
10
V
LBI
V
V
TRIP
TRIP
–10mV
1200
1100
2V/DIV
+10mV
1000
100
900
800
700
95
90
85
80
75
70
65
60
55
50
V
LBO
–50
Maximum Duty Cycle
Switch Current Limit
0
Low Battery Detector Transient
Response
R
L = 33 H
V
PULL-UP
L
= 3V
–25
2
= 47k
TEMPERATURE ( C)
INPUT VOLTAGE (V)
0
4
5 s/DIV
25
6
50
8
75
LT1303 G12
LT1303 G15
LT1303 G18
100
10