LT1777C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1777C' PDF : 24 Pages View PDF
LT1777
TYPICAL PERFOR A CE CHARACTERISTICS
Minimum Input Voltage
vs Temperature
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1777 G01
Switch Current Limit
vs Duty Cycle
1000
TA = 25°C
800
600
400
200
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
1777 G03
SHDN Pin Current vs Voltage
5
0
–5
–10
–15
–20
0
25°C
125°C
–55°C
1
2
3
4
SHDN PIN VOLTAGE (V)
5
1777 G05
Switch On Voltage
vs Switch Current
1.50
1.25
25°C
1.00
– 55°C
0.75
125°C
0.50
0.25
0
0 100 200 300 400 500 600 700
SWITCH CURRENT (mA)
1777 G02
SHDN Pin Shutdown Threshold
vs Temperature
900
800
700
600
500
400
300
200
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1777 G04
SHDN Pin Lockout Thresholds
vs Temperature
1.30
1.28
UPPER THRESHOLD
1.26
LOWER THRESHOLD
1.24
1.22
1.20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1777 G06
4
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