LX8816 데이터 시트보기 (PDF) - Microsemi Corporation
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LX8816 Datasheet PDF : 9 Pages
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LX8816
TM
®
Dual Channel 1A Low Dropout Regulator
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VBAT).................................................................................................. 13.5V
Load Current (Internally Limited)................................................................................... 1A
Power Dissipation ................................................................................... Internally Limited
Short-Circuit Protection ........................................................................................Indefinite
Operating Junction Temperature................................................................................ 150°C
Storage Temperature Range........................................................................ -65°C to 150°C
Peak Package Solder Reflow Temperature
(40 seconds 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.
PACKAGE PIN OUT
Tab is GND
5
V2
4
V1
3
GND
2
ADJ
1
VIN
THERMAL DATA
DF Plastic S-Pak 5-Pin
THERMAL RESISTANCE-JUNCTION TO TAB, θJT
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
4.5°C/W
24.5°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 25°C/W to >
40°C/W depending on mounting technique. (See Application Notes Section: Thermal
considerations)
DF PACKAGE
(Top View)
RoHS 100% Matte Tin Lead Finish
PIN NAME
VIN
ADJ
GND
V1
V2
FUNCTIONAL PIN DESCRIPTION
DESCRIPTION
Positive unregulated supply input for the regulator. Bypass to GND with at least 2.2µF capacitance having low
ESR for good transient response.
Adjustable Input. The output voltage can be set by two external resistors with the following relationship: V1 = VREF
* (1 + R1 / R2) + IADJ * R1 where R1 is the resistor connected between V1 and ADJ, and R2 is the resistor
connected between ADJ and GND.
Common terminal for ground reference. The input and output bypass capacitors should be connected to this
pin. In addition the tab on the S-Pak package and pin 3 are also used for heat sinking the device.
Adjustable regulator output (Regulator #1) It is recommended to bypass to GND with at least 2.2uF. Size your
output capacitor to meet the transient loading requirement. If you have a very dynamic load, a lower ESR
capacitor will improve the response to these load steps.
Fixed regulator output (Regulator #2). It is recommended to bypass to GND with at least 2.2µF. Size your output
capacitor to meet the transient loading requirement. For dynamic loads, a lower ESR capacitor will improve the
response to these load steps.
Copyright © 2000
Rev. 1.2c, 2005-05-18
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 2
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