LX8816_05 Datasheet, PDF (1/9 Pages) Microsemi Corporation – Dual Channel 1A Low Dropout Regulator

LX8816
TM
®
Dual Channel 1A Low Dropout Regulator
PRODUCTION DATA SHEET
DESCRIPTION
The LX8816 is a dual channel enabling precise output voltages,
positive-voltage linear regulator. This typically ±1% of it’s specified value,
dual regulator has one fixed output while the BiPolar output transistor has a
coupled with an adjustable output. low dropout voltage even at full output
Each channel features low-dropout current (V_DO < 1.2V typ. @ 1A).
and high accuracy.
Thermal and Short Circuit Current
The LX8816 provides designers Protection are integrated on-chip and
with a flexible power management operate independently for each regulator
solution, minimal printed circuit board output.
area and shorter design cycles.
The LX8816 regulator is stable with a
Each channel can supply up to one low-value output capacitor, typically
amp independently with a regulator _{2.2µF on the outputs, allowing designers}
design optimized for system efficiency _{flexibility in external component}
by consuming minimal ground current _selection.
and directing quiescent current to the _{Microsemi’s S-PAK package enables}
load.
maximum power dissipation and ease of
The LX8816 features on-chip _{assembly using surface mount}
trimming of the internal voltage
technology.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ Two Independent Regulated
Outputs
ƒ Accurate Output Voltages
ƒ Typical Dropout of 1.2V at 1A
and 1.1V at 500mA
ƒ Independent Thermal and
Current Limit Protection
ƒ Low Profile 5 Lead SMT Power
Package
ƒ Low Tolerance Load Regulation
ƒ Wide DC Supply Voltage of 4.3V
to 10V
ƒ Loop Stability Independent of
Output Capacitor Type
APPLICATIONS/BENEFITS
ƒ 5V to 3.3V / ADJ Regulators
ƒ Hard Disk Drives, CD-ROMs
ƒ ADSL and Cable Modems
ƒ Battery Charging Circuits
ƒ Instrumentation
ƒ PC Peripherals
APPLICATION CIRCUITS
V_IN = 5V
22µF
V_IN
V₂
LX8816-04
10 µF
GND
V₁
ADJ
R1
499
10µF
R2
499
*V₁
=
V_REF
⎜⎜⎝⎛^{1 +}
R1
R2
⎟⎞
⎠
+
I
ADJ
R1
3.3V @ 1.0A
2.5V* @ 1.0A
Copyright © 2000
Rev. 1.2c, 2005-05-18
PACKAGE ORDER INFO
T_J (°C)
OUTPUT V₁
(PIN 4)
OUTPUT V₂
(PIN 5)
Plastic S-PAK
DF 5-PIN
RoHS Compliant
Transition DC: 0515
0 to 125
Adj.
3.3V
LX8816-04CDF
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX8816-04CDF-TR)
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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