Datasheet

3
LT1304/LT1304-3.3/LT1304-5
V
IN
= 2V, V
SHDN
= 2V unless otherwise noted.
E
LECTR
IC
AL C CHARA TERIST
ICS
The ● denotes specifications which apply over the 0°C to 70°C operating
temperature range.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Switch Saturation Voltage I
SW
= 1A 0.37 V
I
SW
= 700mA ● 0.26 0.35 V
Switch Leakage Switch Off, V
SW
= 5V ● 0.01 7 µA
TYPICAL PERFORMANCE CHARACTERISTICS
UW
TEMPERATURE (°C)
–50 –25
TIME (µs)
05025
75
100
1304 G03
8
7
6
5
4
3
2
1
0
MAXIMUM ON-TIME
OFF-TIME
On- and Off-Times
Supply Current
SWITCH CURRENT (A)
0
SATURATION VOLTAGE (mV)
500
400
300
200
100
0
0.2
0.4 0.6 0.8
1304 G01
1.0 1.2
T
A
= 25°C
TEMPERATURE (°C)
–50
0
BIAS CURRENT (nA)
4
6
8
10
12
14
–25
0
25 50
1304 G05
75
16
18
20
2
100
Feedback Pin Bias Current
Feedback Voltage
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
1304 G04
75 100
TEMPERATURE (°C)
PEAK CURRENT (A)
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6

1304 G02
–50
–25
0 25 50 75 100
Peak Switch Current LimitSwitch Saturation Voltage
INPUT VOLTAGE (V)
01 3 5 7
SUPPLY CURRENT (µA)
24
6
8
1304 G06
300
250
200
150
100
50
0
V
SHDN
= V
IN
NOT SWITCHING
V
SHDN
= 0V
T
A
= 25°C