lt3590 Linear Technology Corporation, lt3590 Datasheet - Page 3

• Manufacturer Part Number: lt3590
• Description: 48v Buck Mode Led Driver In Sc70 And 2mm X 2mm Dfn
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
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 LT3590E is guaranteed to meet performance specifi cations
from 0°C to 85°C junction temperature. Specifi cations over the –40°C
to 85°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls.
temperature range, otherwise specifi cations are at T
PARAMETER
Minimum Operating Voltage
LED Current Sense Voltage (V
Sense Voltage Load Regulation
Quiescent Current ON, No Switching
Quiescent Current in Shutdown
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
V
V
V
CTRL Pin Bias Current
LED Pin Bias Current
LDO Voltage V
LDO Load Regulation
LDO Current Limit
Schottky Forward Drop
Schottky Leakage Current
CTRL
CTRL
CTRL
for Full LED Current
to Shut Down IC
to Turn on IC
CESAT
REG
IN
- V
LED
)
CONDITIONS
ΔI
V
V
I
V
V
V
I
ΔI
I
V
SW
VREG
SCHOTTKY
LED
CTRL
SW
CTRL
LED
R
LED
VREG
= 48V
= 50mA
A
= 48V
= 47.7V
= 47.8V
= 10mA to 50mA
= 1mA
= 0V
= 1V, Current Out of Pin
= 25°C, V
= 0mA to 1mA
= 50mA
The
●
IN
denotes the specifi cations which apply over the full operating
= 48V, V
CTRL
= 3.3V, unless otherwise noted.
●
●
●
●
MIN
190
650
150
4.5
1.5
3.1
1.5
90
80
TYP
200
500
850
115
500
100
3.3
0.8
15
17
5
1
9
LT3590
MAX
1050
210
700
150
100
3.5
20
14
2
4
UNITS
3
3590f
kHz
mV
mV
mA
mV
mV
mV
mV
mA
μA
μA
μA
nA
μA
μA
%
V
V
V
V