Harman Kardon AVR 146, Руководство по обслуживанию

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1A LOWDROP OUT VOLTAGE REGULATOR (ADJUSTABLE & FIXED) LM1117
FEATURES
● Output Current up to 1 A
● Low Dropout Voltage ( 700mV at 1A Output Current )
● Three Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 2.85V,
3.0V, 3.3V, 5.0V
● 2.85V Device for SCSI-II Active Terminator
● 0.04% Line Regulaion, 0.1% Load Regulation
● Very Low Quiescent Current
● Internal Current andTerminal Limit
● Logic-Controlled Electronics Shutdown
● Surface Mount Package SOT-223 & TO-263 (D2-Pack)
● 100% Thermal Limit Burn-In
APPLICATION
● Active SCSI Terminators
● Portable/Plan Top/Notebook Computers
● High Efficiency Linear Regulators
● SMPS Post Regulators
ORDERING INFORMATION
● Mother B/D Clock Supplies
Package
● Disk Drives
● Battery Chargers
DESCRIPTION
(X=Output Voltage=1.5V, 1.8V, 2.5V, 2.85V,
'3.0V, 3.3V, 5.0V, Adjustable=AD)
The LM1117 is a low power positive-voltage regulator designed to meet 1A output current and comply
with SCSI-II specifications with a fixed output voltage of 2.85V. This device is an excellent choice for use
in battery-powered applications, as active terminators for the SCSI bus, and portable computers.
The LM1117 features very low quiescent current and very
low dropout voltage of 700mV at a full load
and
lower as output current decreases. LM1117 is available as an adjustable or fixed 1.5V, 1.8V, 2.5V, 2.85V,
3.0V, 3.3V, and 5.0V output voltages.
The LM1117 is offered in a 3-pin surface mount package SOT-223 & TO-263. The output capacitor of
10㎌ or larger is needed for output stability of LM1117 as required by most of the other regulator circuits.
ABSOLUTE MAXIMUM RATINGS
HTC
LM1117T
LM1117T-XX
TO-263 (D2)
Device (Marking)
SOT-223
LM1117S
LM1117S-XX
MIN. UNIT
℃
V
0
7
125
℃
-65 150
Lead Temperature (Soldering, 5 Seconds)
T
SOL
℃
1
CHARACTERISTIC
DC Input Voltage
Operating Junction Temperature Range
SYMBOL
V
IN
T
OPR
Storage Temperature Range
T
STG
MAX.
260
1 2 3
SOT-223 PKG (FRONT VIEW)
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
TO-263 (D2 PKG, FRONT VIEW)
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
1 2 3
159
AVR146
harman/kardon