LX1744 データシートの表示（PDF） - Microsemi Corporation
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LX1744 Datasheet PDF : 16 Pages
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INTEGRATED PRODUCTS
LX1744
Dual Output Boost – LED Driver / LCD Bias
PRODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage ...........................................................................-0.3V to 7V
Feedback Input Voltage (VFB, VLFB).......................................-0.3V to VIN + 0.3V
Shutdown Input Voltage (VSHDN , VLSHDN)) ...........................-0.3V to VIN + 0.3V
PWM Input Amplitude (ADJ, BRT).......................................-0.3V to VIN + 0.3V
Analog Adjust Input Voltage (VADJ, VBRT) .............................-0.3V to VIN + 0.3V
SRC Input Current ................................................................................ 800mARMS
Operating Temperature Range .........................................................-40°C to 85°C
Maximum Operating Junction Temperature ................................................ 150°C
Storage Temperature Range...........................................................-65°C to 150°C
RoHS Peak Package Solder Reflow Temperature
(40 second maximum exposure) ..................................................... 260°C (+0, -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
THERMAL DATA
LQ Plastic MLPQ 16-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
31°C/W
PW Plastic TSSOP 14-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
90°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
PACKAGE PIN OUT
SW
SHDN
FB
ADJ
REF
IN
LSHDN
1
14
2
13
3
12
4
11
5
10
6
9
7
8
PW PACKAGE
(Top View)
GND
SRC
DRV
CS
OVP
LFB
BRT
SW
SHDN1
FB
ADJ
16 15 14 13
1
12
2
11
3
10
4
9
56 78
DRV
CS
OVP
LFB
LQ PACKAGE
(Bottom View)
(“N.C.” = No Internal Connection)
RoHS / Pb-free 100% Matte Tin Lead Finish
Copyright © 2000
Rev. 1.1b, 2005-03-01
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
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