LT3476 LINER [Linear Technology], LT3476 Datasheet - Page 3

• Manufacturer Part Number: LT3476
• Description: High Current Quad Output LED Driver
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, (Note 3) otherwise specifi cations are at T
PWM1-4 = 3.3V, V
PARAMETER
Quiescent Current Idle
Quiescent Current Active (Not Switching)
Switching Frequency
Nominal R
Maximum Duty Cycle
V
VC1-4 Idle Input Bias Current
EAMP GM (ΔI
VC Output Impedance
SW1-4 Current Limit
SW1-4 V
SW1-4 Leakage Current
CAP1-4 Overvoltage Protect Threshold
CAP1-4/LED1-4 Idle Input Bias Current
CAP1-4/LED1-4 Input Bias Current
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Pin Current
PWM1-4 Input Low Voltage
PWM1-4 Input High Voltage
PWM1-4 Pin Current
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: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.
ADJ1-4
Input Bias Current
CESAT
T
Pin Voltage
VC
/ΔV
CAP-LED
ADJ1-4
)
= REF , CAP1-4 = 5V, unless otherwise noted.
CONDITIONS
PWM1-4 = 0V
VC1-4 = 0V
R
R
R
R
R
R
Current Out of Pin
PWM1-4 = 0V
Static Test
I
SHDN = 0V
PWM1-4 < 0.4V, CAP = LED = 5V
CAP = LED = 5V
SW
T
T
T
T
T
T
= 8.25k
= 21k
= 140k
= 8.25k (2MHz)
= 21k (1MHz)
= 140k (200kHz)
= 1.3A to GND
The
A
= 25°C. SW1-4 = 5V, V
●
denotes the specifi cations which apply over the full operating
Note 3: The LT3476E is guaranteed to meet specifi cations from 0°C to
85°C. Specifi cations over the –40°C to 85°C operating temperature range
are assured by design, characterization and correlation with statistical
process controls.
IN
= 3.3V, SHDN = 3.3V, R
1700
33.5
MIN
850
160
–10
–20
1.5
1.5
1.5
84
T
2000
1000
1.26
TYP
200
200
350
5.5
0.1
22
76
90
98
20
35
70
16
50
= 21k to GND,
3
0
2
LT3476
MAX
2300
1150
240
100
100
100
2.5
0.4
0.4
30
20
30
5
UNITS
3476fa
3
MΩ
kHz
kHz
kHz
mA
mA
mV
nA
nA
μS
μA
nA
μA
μA
μA
%
%
%
V
A
V
V
V
V
V