LTC1628 LINER [Linear Technology], LTC1628 Datasheet - Page 7

• Manufacturer Part Number: LTC1628
• Description: High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFOR A CE CHARACTERISTICS
31
25
35
33
29
27
–50 –25
Current Sense Pin Input Current
vs Temperature
V
OUT
= 5V
0
TEMPERATURE ( C)
3.50
3.45
3.20
3.40
3.35
3.30
3.25
25
–50
Undervoltage Lockout
vs Temperature
50
–25
75
W
0
TEMPERATURE ( C)
100
1628 G26
25
U
125
50
75
10
6
0
8
4
2
100
–50 –25
EXTV
vs Temperature
1628 G29
125
CC
Switch Resistance
0
TEMPERATURE ( C)
25
50
75
4.5
4.0
3.5
3.0
2.5
2.0
1.0
1.5
0.5
0
100
–50
Shutdown Latch Thresholds
vs Temperature
1628 G27
LTC1628/LTC1628-PG
125
–25
0
TEMPERATURE ( C)
THRESHOLD
350
200
150
100
300
250
LATCHOFF
25
50
0
– 50
Oscillator Frequency
vs Temperature
LATCH ARMING
50
– 25
75
0
TEMPERATURE ( C)
100
1628 G30
V
25
V
FREQSET
V
FREQSET
FREQSET
125
50
= OPEN
= 5V
= 0V
75
100
1628 G28
7
125