LT3492 LINER [Linear Technology], LT3492 Datasheet - Page 4

• Manufacturer Part Number: LT3492
• Description: Triple Output LED Driver with 3000:1 PWM Dimming
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
LT3492
temperature range, otherwise specifi cations are at T
OVP1-3 = 0V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3492E is guaranteed to meet performance specifi cations
from 0°C to 125°C junction temperature. Specifi cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3492I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
PARAMETER
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Pin Current
PWM1-3 Input Low Voltage
PWM1-3 Input High Voltage
PWM1-3 Pin Current
Gate Off Voltage (ISP1-3–TG1-3)
Gate On Voltage (ISP1-3–TG1-3)
Gate Turn-On Delay
Gate Turn-Off Delay
TYPICAL PERFORMANCE CHARACTERISTICS
4
14
12
10
8
4
2
0
6
0
Quiescent Current
10
V
C
V
= GND, NOT SWITCHING
IN
20
(V)
PWM1-3 = 5V
PWM1-3 = 0V
30
3492 G01
40
CONDITIONS
SHDN = 5V, Current Into Pin
Current Into Pin
ISP1-3 = 60V, PWM1-3 = 0V
ISP1-3 = 60V
C
C
LOAD
LOAD
600
500
400
200
100
300
0
= 300pF , ISP1-3 = 60V (Note 5)
= 300pF , ISP1-3 = 60V (Note 5)
0
A
Switch On Voltage
= 25°C. V
200
The
SWITCH CURRENT (mA)
l
IN
400
denotes the specifi cations which apply over the full operating
= 5V, SHDN = 5V, PWM1-3 = 5V, FADJ = 0.5V, CTRL1-3 = 1.5V,
Note 3: Current fl ows into pin. Current limit and switch V
guaranteed by design and/or correlation to static test.
Note 4: Absolute maximum voltage at the V
nonrepetitive 1 second transients, and 30V for continuous operation.
Note 5: Gate turn-on/turn-off delay is measured from 50% level of PWM
voltage to 90% level of gate on/off voltage.
600
800
3492 G02
(T
1000
A
= 25°C unless otherwise noted)
1200
1000
200
800
600
400
0
0
Switch Current Limit
vs Duty Cycle
MIN
1.5
1.2
5.5
20
IN
DUTY CYCLE (%)
and SHDN pins is 40V for
TYP
160
110
110
0.1
6.5
40
65
60
CESAT
MAX
120
210
0.4
0.4
0.3
7.5
is
80
3492 G03
UNITS
100
3492f
μA
μA
ns
ns
V
V
V
V
V
V