LX1745(2006) データシートの表示（PDF） - Microsemi Corporation
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LX1745 Datasheet PDF : 16 Pages
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LX1745
TM
®
Triple Output Boost – LED Driver / LCD Bias
PRODUCTION DATASHEET
ABSOLUTE MAXIMUM RATINGS
Supply Input Voltage ...........................................................................-0.3V to 7V
Feedback Input Voltage (VFBx) ...............................................-0.3V to VIN + 0.3V
Shutdown Input Voltage (VSHDN x) ..........................................-0.3V to VIN + 0.3V
PWM Input Amplitude (ADJx, BRT).....................................-0.3V to VIN + 0.3V
Analog Adjust Input Voltage (VADJx, VBRT)............................-0.3V to VIN + 0.3V
SRC Input Current ................................................................................ 500mARMS
Operating Temperature Range .........................................................-40°C to 85°C
Maximum Operating Junction Temperature ................................................ 150°C
Storage Temperature Range...........................................................-65°C to 150°C
RoHS / Pb-free 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.
x denotes respective pin designator 1, 2, or 3
THERMAL DATA
PW Plastic TSSOP 20-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
SW1
1
ADJ1
2
SHDN1
3
IN
4
LSHDN
5
DRV
6
SRC
7
GND
8
SHDN2
9
SW2
10
20
GND
19
FB1
18
REF
17
OVP
16
BRT
15
CS
14
LFB
13
ADJ2
12
FB2
11
GND
PW PACKAGE
(Top View)
RoHS / Pb-free 100% Matte Tin Lead Finish
Copyright © 2000
Rev. 1.2, 2006-02-27
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
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