LT1370 Linear Technology, LT1370 Datasheet - Page 4

• Manufacturer Part Number: LT1370
• Description: 500kHz High Efficiency 6A Switching Regulator
• Manufacturer: Linear Technology

LT1370
TYPICAL PERFORMANCE CHARACTERISTICS
4
100
550
500
450
400
350
300
250
200
150
20
18
16
14
12
10
50
–1
–2
–3
–4
8
6
4
2
0
0
2
1
0
–50
–1
Switch Saturation Voltage
vs Switch Current
0
Shutdown Delay and Threshold
vs Temperature
S/S Pin Input Current vs Voltage
SHUTDOWN DELAY
–25
0
1
SHUTDOWN THRESHOLD
0
1
SWITCH CURRENT (A)
TEMPERATURE ( C)
2
25
2
VOLTAGE (V)
25 C
50
3
3
75 C
75
4
4
125 C
100 125 150
0 C
W
5
5
LT1370 • G04
LT1370 • G07
LT1370 • G01
6
U
6
7
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
110
100
8.2
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
90
80
70
60
50
40
30
20
10
0
Switch Current Limit
vs Duty Cycle
3.0
2.0
1.5
0.5
0
2.5
1.0
Switching Frequency
vs Feedback Pin Voltage
0
–50
10
0.1
Minimum Synchronization
Voltage vs Temperature
f
SYNC
20
0.2
–25
FEEDBACK PIN VOLTAGE (V)
= 700kHz
30
0.3
DUTY CYCLE (%)
0
40
TEMPERATURE ( C)
0.4
25
50
0.5
50
60
0.6
70
0.7
75
80
0.8
100
LT1370 • G02
LT1370 • G08
90
0.9
LT1370 • G05
125
100
1.0
150
2000
1800
1600
1400
1200
1000
800
600
400
200
2.4
–100
–200
3.0
2.8
2.6
2.2
2.0
1.8
–300
400
300
200
100
0
–50
–50
0
Minimum Input Voltage
vs Temperature
Error Amplifier Transconductance
vs Temperature
Error Amplifier Output Current
vs Feedback Pin Voltage
–25
–25
–0.3
0
FEEDBACK PIN VOLTAGE (V)
0
125 C
TEMPERATURE ( C)
TEMPERATURE ( C)
–0.2
25
25
50
50
–0.1
25 C
–55 C
75
75
g
V
m
100 125 150
100
REF
=
V (FB)
LT1370 • G09
LT1370 • G03
I (V
125
LT1370 • G06
0.1
C
)
150