LX8817 データシートの表示（PDF） - Microsemi Corporation
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LX8817 Datasheet PDF : 4 Pages
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A MICROSEMI COMPANY
LX8817
Dual Channel 2.5A Low Dropout Regulator
PRELIMINARY
Input Voltage (VCTRL, VPWR) ........................................................................ 13.5V
Load Current (Internally Limited) .................................................................. 3.0A
Power Dissipation...................................................................... Internally Limited
Short-Circuit Protection...........................................................................Indefinite
Operating Junction Temperature ..................................................................150°C
Storage Temperature Range .......................................................... -65°C to 150°C
Lead Temperature (Soldering 180 seconds) .................................................235°C
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.
DF Plastic S-PAK 7-PIN
THERMAL RESISTANCE-JUNCTION TO TAB, θJT
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
4.5°C/W
20°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. θJA can vary from 10°C/W to >
30°C/W depending on mounting technique. (See Application Notes Section: Thermal
considerations)
TAB is GND
7
6
5
4
3
2
1
DF PACKAGE
(Top View)
NC
ADJV2
V O UT2
GND
VPW R
V
O UT1
V
CTRL
1
VCTRL
Unregulated input voltage supply, provides bias for control circuitry, (VCTRL – VOUT) > 1V.
2
VOUT1
Regulator #1 fixed output voltage.
3
VPWR
Unregulated input voltage supply for power section. For proper operation: (VPWR – VOUT) >
VDROPOUT.
4
GND
Common terminal for ground reference, Tab of package is internally connected to this pin.
5
VOUT2
Regulator #2 adjustable output.
6
ADJV2
Regulator #2 voltage feedback. Sets the output voltage for regulator #2 via an external resistor
divider.
7
NC
Not used.
Copyright © 2000
Rev. 0.2a, 2000-09-15
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
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