ltc1473l Linear Technology Corporation, ltc1473l Datasheet - Page 4

• Manufacturer Part Number: ltc1473l
• Description: Dual Low Voltage Powerpath Switch Driver
• Manufacturer: Linear Technology Corporation

LTC1473L
4
TYPICAL PERFOR A CE CHARACTERISTICS
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
–60
Turn-Off Delay and Gate Fall Time
vs Temperature
V
C
V
LOAD
SAB
+
–40
= 5V
= 5V
= 1000pF
– 20
TEMPERATURE ( C)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
8.5
8.0
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
0.2
0
– 60
– 50
0
Logic Input Threshold Voltage
vs Temperature
Timer Source Current
vs Temperature
V
TIMER = 0V
+
–40
20
– 25
= 5V
GATE FALL
TURN-OFF
TIME
DELAY
–20
40
0
TEMPERATURE ( C)
TEMPERATURE ( C)
60
0
W
V
V
25
+
+
= 2.8V
80
20
= 10V
1473 G07
50
U
100
40
75
60
100
80
1473 G12
1473 G10
45
40
35
30
25
20
15
10
5
0
– 60
125
100
Turn-On Delay and Gate Rise Time
vs Temperature
V
C
V
LOAD
SAB
+
– 40 – 20
= 5V
= 0V
= 1000pF
TEMPERATURE ( C)
0
20
GATE RISE
TURN-ON
DELAY
40
TIME
60
80
1473 G08
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
100
– 50
300
250
200
150
100
50
– 50
0
Timer Latch Threshold Voltage
vs Temperature
SENSE Pin Source Current
(I
0
V
BSENSE
+
– 25
1
= 5V
2
40
15
10
35
30
25
20
) vs V
5
0
10
0
TEMPERATURE ( C)
Rise and Fall Time
vs Gate Capacitive Loading
3
SENSE
V
25
4
SENSE
GATE CAPACITIVE LOADING (pF)
V
V
V
V
+
DIODE
IN2
SENSE
5
= 5V
50
= 0V
(V)
100
+
6
= V
– V
RISE TIME
FALL TIME
V
V
IN1
75
SAB
SAB
SENSE
7
= 5V
= 0V
= 5V
8
100
–
1473 G11
= 0V
1473 G13
9
1000
125
10
1473 G08
10000