Datasheet

LT3760
7
3760fc
INTV
CC
Current Limit
vs Junction Temperature
SENSE Threshold
vs Junction Temperature
Overvoltage Protection (OVP)
Level vs Junction Temperature
V
OUT
- V
(LEDx)
Short Threshold
vs Junction Temperature
Minimum ON and OFF Times
vs Junction Temperature
GATE Rise/Fall Times
vs GATE Capacitance
INTV
CC
vs Current,
Junction Temperature
INTV
CC
vs Current,
Junction Temperature
INTV
CC
, UVLO(+), UVLO(–)
vs Junction Temperature
Typical perForMance characTerisTics
T
A
= 25°C, unless otherwise noted.
JUNCTION TEMPERATURE (°C)
–50
INTV
CC
(V)
7.0
6.9
6.8
6.7
6.6
25 100750 50
3760 G13
125–25
I
LOAD
= 10mA, 20mA, 30mA
I
LOAD
= 40mA
V
IN
= 8V, PWM = 0V
JUNCTION TEMPERATURE (°C)
–50
INTV
CC
(V)
6.0
5.00
5.5
4.5
25 100750 50
3760 G14
125–25
V
IN
= 6V, PWM = 0V
I
LOAD
= 10mA
I
LOAD
= 20mA
I
LOAD
= 30mA
I
LOAD
= 40mA
JUNCTION TEMPERATURE (°C)
–50
INTV
CC
(V)
8
4
5
6
7
2
3
25 100750 50
3760 G15
125–25
INTV
CC
UVLO(–)
INTV
CC
UVLO(+)
V
IN
= 12V
INTV
CC
(REGULATED)
JUNCTION TEMPERATURE (°C)
–50
INTV
CC
CURRENT (mA)
60
45
50
55
40
25 100750 50
3760 G16
125–25
V
IN
= 6V, INTV
CC
= 0V
JUNCTION TEMPERATURE (°C)
–50
SENSE PIN VOLTAGE (mV)
60.0
57.5
55.0
52.5
50.0
47.5
45.0
42.5
40.0
25 100750 50
3760 G17
125–25
INDUCTOR PEAK CURRENT THRESHOLD
(CYCLE-BY-CYCLE)
JUNCTION TEMPERATURE (°C)
–50
OVP (V)
70
60
50
40
30
20
10
0
25 100750 50
3760 G18
125–25
OVP
SET
= 1.0V
OVP
SET
= 0.22V
JUNCTION TEMPERATURE (°C)
–50
SHORT THRESHOLD (V)
7.00
6.75
6.50
6.25
6.00
5.75
5.50
5.25
5.00
25 100750 50
3760 G18
125–25
V
OUT
= 60V
V
OUT
= 12V
JUNCTION TEMPERATURE (°C)
–50
TIME (ns)
250
225
200
175
150
125
100
25 100750 50
3760 G20
125–25
MINIMUM ON-TIME
MINIMUM OFF-TIME
C
GATE
(nF)
0
TIME (ns)
120
100
80
60
40
20
0
155 10
3760 G21
20
FALL TIME
RISE TIME
V
IN
= 8V
INTV
CC
= 7V