LT3492 LINER [Linear Technology], LT3492 Datasheet - Page 3

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

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
OVP1-3 = 0V, unless otherwise noted.
PARAMETER
V
V
Full-Scale LED Current Sense Voltage
One-Tenth Scale LED Current Sense Voltage
ISPn/ISNn Operating Voltage
V
V
Quiescent Current in Shutdown
Quiescent Current Idle
Quiescent Current Active (Not Switching)
Switching Frequency
Maximum Duty Cycle
CTRL1-3 Input Bias Current
FADJ Input Bias Current
OVP1-3 Input Bias Current
OVP1-3 Threshold
V
V
EAMP g
SW1-3 Current Limit
SW1-3 V
SW1-3 Leakage Current
ISP1-3 Input Bias Current
ISP1-3, ISN1-3 Idle Input Bias Current
ISP1-3, ISN1-3 Input Bias Current in Shutdown
IN
IN
REF
REF
C1-3
C1-3
Operation Voltage
Undervoltage Lockout
Output Voltage
Line Regulation
Idle Input Bias Current
Output Impedance
m
CESAT
(ΔI
VC
/ΔV
CAP-LED
)
CONDITIONS
(Note 4)
ISP1-3 = 48V
CTRL1-3 = 100mV, ISP1-3 = 48V
I
3V ≤ V
SHDN = 0V
PWM1-PWM3 = 0V
V
FADJ = 1.5V
FADJ = 0.5V
FADJ = 0.1V
FADJ = 1.5V (2.1MHz)
FADJ = 0.5V (1.3MHz)
FADJ = 0.1V (330kHz)
Current Out of Pin, CTRL1-3 = 0.1V
Current Out of Pin, FADJ = 0.1V
Current Out of Pin, OVP1-3 = 0.1V
PWM1-3 = 0V
ISP1-3 = 48V
ISP1-3 = 48V
(Note 3)
I
SHDN = 0V, SW = 5V
PWM1-3 = 0V
SHDN = 0V
REF
SW
C1
-V
= 500mA (Note 3)
= 200μA, Current Out of Pin
C3
IN
A
= 0V
≤ 40V, I
= 25°C. V
The
REF
l
= 10μA
IN
denotes the specifi cations which apply over the full operating
= 5V, SHDN = 5V, PWM1-3 = 5V, FADJ = 0.5V, CTRL1-3 = 1.5V,
l
l
1800
1000
1.96
0.95
MIN
280
–20
600
2.5
98
96
73
80
3
7
2100
1300
1000
TYP
100
340
200
340
180
2.1
0.1
10
11
78
87
97
20
20
10
10
2
6
1
0
LT3492
MAX
2400
1600
1300
2.04
0.03
1.05
103
104
400
100
100
100
250
2.4
30
13
60
10
15
20
8
2
1
1
UNITS
3
%/V
3492f
MΩ
kHz
kHz
kHz
mV
mV
mA
mA
mV
mV
mA
μA
nA
nA
nA
nA
μS
μA
μA
μA
μA
%
%
%
V
V
V
V
V