Datasheet

3
LT1302/LT1302-5
TYPICAL PERFORMANCE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50
SATURATION VOLTAGE (mV)
400
350
300
250
200
150
100
–25
02550
1302 G03
75 100
I
SW
= 2A
TEMPERATURE (°C)
–50
FEEDBACK VOLTAGE (V)
1.250
1.245
1.240
1.235
1.230
1.225
1.220
1.215
1.210
1.205
1.200
–25
02550
1302 G04
75 100
SUPPLY VOLTAGE (V)
2.0 2.5 3.0 3.5 4.0 4.5 5.0
QUIESCENT CURRENT (µA)
500
450
400
350
300
250
200
150
100
50
0
1302 G01
T
A
= 25°C
No-Load Quiescent Current
Circuit of Figure 1
TEMPERATURE (°C)
–50
SENSE RESISTANCE (kΩ)
600
500
400
300
200
100
0
–25
02550
1302 G05
75 100
TEMPERATURE (°C)
–50
QUIESCENT CURRENT (µA)
300
250
200
150
100
50
0
–25
02550
1302 G06
75 100
V
IN
= 2.5V
SWITCH OFF
TEMPERATURE (°C)
–50
OFFSET VOLTAGE (mV)
30
25
20
15
10
5
0
–25
02550
1302 G07
75 100
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
5.100
5.075
5.050
5.025
5.000
4.975
4.950
4.925
4.900
–25
02550
1302 G08
75 100
TEMPERATURE (°C)
–50
ON-TIME (µs)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
–25
02550
1302 G09
75 100
SWITCH CURRENT (A)
0
V
CESAT
(V)
600
500
400
300
200
100
0
1234
1302 G02
T
A
= 25°C
Switch Saturation Voltage Switch Saturation Voltage
LT1302 Feedback Voltage
LT1302-5 Sense Pin Resistance Quiescent Current
Error Amplifier Offset Voltage LT1302-5 Output Voltage Maximum On-Time