lt3592emse-trpbf Linear Technology Corporation, lt3592emse-trpbf Datasheet - Page 3

• Manufacturer Part Number: lt3592emse-trpbf
• Description: 500ma Wide Input Voltage Range Step-down Led Driver With 10 1 Dimming
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
PARAMETER
Minimum Input Voltage
Input Quiescent Current
- in Shutdown
CAP to OUT Voltage
DA Pin Current to Stop OSC
Switching Frequency
Maximum Duty Cycle
SHDN Input High Voltage
SHDN Input Low Voltage
BRIGHT Input High Voltage
BRIGHT Input Low Voltage
Switch Current Limit (Note 4)
Switch V
Boost Pin Current
Switch Leakage Current
Minimum Boost Voltage
Boost Diode Forward Voltage
V
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 LT3592E 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
LT3592I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The operating lifetime is derated at junction
temperatures greater than 125°C.
FB
Voltage
CESAT
CONDITIONS
Not Switching
V
0.4Ω CAP to OUT
BRIGHT = 1.4V
BRIGHT = 0.3V
R
R
R
R
I
I
V
I
OUT = CAP = 4V
SW
SW
DIO
SHDN
OUT
T
T
T
T
= 357k
= 140k
= 48.7k
= 140k
= 500mA
= 500mA
= 50mA
A
= 4V
= 0.3V
= 25°C. V
The
l
IN
denotes the specifi cations which apply over the full operating
= 12V, V
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operation above
the specifi ed maximum operating junction temperature may result in
device degradation or failure.
Note 4: Switch Current Measurements are performed when the outputs
are not switching. Slope compensation reduces current limit at higher duty
cycles.
BOOST
= 16V, V
OUT
= 4V unless otherwise noted. (Note 2)
l
l
l
l
l
1.185
MIN
–0.8
190
350
800
1.9
2.3
1.4
0.9
18
90
3.25
1.25
1.21
TYP
200
400
900
300
800
0.1
2.2
1.8
20
–1
94
20
2
1
LT3592
1.235
1000
MAX
–1.2
210
450
3.6
2.5
0.3
0.3
1.5
2.5
22
30
10
3
2
UNITS
3
3592f
MHz
kHz
kHz
mA
mV
mV
mV
mA
mV
μA
μA
%
V
A
V
V
V
V
A
V
V