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LTM8005 データシート(PDF) 1 Page - Linear Technology

部品番号 LTM8005
部品情報  38VIN Boost 關Module Regulator for LED Drive with 10A Switch
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTM8005 データシート(HTML) 1 Page - Linear Technology

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LTM8005
1
8005f
For more information www.linear.com/LTM8005
TYPICAL APPLICATION
FEATURES
DESCRIPTION
38VIN Boost µModule Regulator for
LED Drive with 10A Switch
The LTM®8005 is a 38VIN, 38VOUT boost µModule (power
micromodule) LED driver designed to regulate current or
voltage and is ideal for driving LEDs. The fixed frequency
and current mode architecture result in stable operation
over a wide range of supply and output voltages. Spread
spectrum frequency modulation (SSFM) can be activated
for improved electromagnetic compatibility (EMC) perfor-
mance. The ground-referred voltage FB pin serves as the
input for several LED protection features, and also allows the
converter to operate as a constant voltage source. The PWM
input provides LED dimming ratios of up to 3000:1, and the
CTRL inputs provide additional analog dimming capability.
The low profile package enables utilization of unused
space on the bottom of PC boards. The LTM8005 is pack-
aged in thermally enhanced, compact over-molded Ball
Grid Array (BGA) package suitable for automated assem-
bly by standard surface mount equipment. The LTM8005
is RoHS compliant.
350mA at 30.5V to 35.5V LED String from 6V to 27V VIN (Boost) with Spread Spectrum
APPLICATIONS
n
Wide Input Voltage Range: 5V to 38V
n
Supports Boost or SEPIC Power Topologies
n
Adjustable LED Current Up to 1.6A
n
40V 10A Internal Power Switch
n
Wide Temperature Range: –40°C to 150°C
n
Input and Output Current Reporting
n
Internal Switch for PWM and Output Disconnect
n
Internal Spread Spectrum Frequency Modulation
n
3000:1 True Color PWM™ Dimming
n
Open LED Protection with OPENLED Flag
n
Short-Circuit Protection and SHORTLED Flag
n
Soft-Start with Programmable Fault Restart Timer
n
9mm × 11.25mm × 2.22mm BGA
n
High Power LED, High Voltage LED
n
Accurate Current-Limited Voltage Regulators
All registered trademarks and trademarks are the property of their respective owners.
LTM8005
8005 TA01a
EN/UVLO
OVLO
PWM
VREF
CTRL1
CTRL2
VOUT
ISN
LED
AUX
FB
ISMON
RAMP
SS
VC
RT
GND OPENLED SHORTLED
IVINP
VIN
IVINN
SW
DA
LED
STRING
COUT
4.7µF
50V
L
8.2µH
L: COILCRAFT XAL7030-822ME
CIN, COUT: MURATA GRM31CR71H475KA12
PIN NOT USED IN THIS CIRCUIT: IVINCOMP
100k
93.1k
1M
19.1k
4.7k
23.2k
f = 350kHz
10nF
6.8nF
0.1µF
0.1µF
CIN
4.7µF
50V
12.4k
374k
VIN
6V TO 27V
18.7k


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