AS1117 Regulator Datasheet

AS1117 Datasheet, PDF, Equivalent


Part Number

AS1117

Description

800mA Low Dropout Regulator

Manufacture

Sipex

Total Page 9 Pages
Datasheet
Download AS1117 Datasheet


AS1117
AS1117
800mA Low Dropout Regulator
SCSI-II Active Terminator
FEATURES
Guaranteed 800mA Output
Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 3V, 3.3V & 5V
Very Low Quiescent Current
Low Dropout Voltage Of 1.2 Volts At Full Load
Extremely Tight Load And Line Regulation
Very Low Temperature Coefficient
Logic-Controlled Electronic Shutdown
Internal Overcurrent Limiting & Thermal Overload Protection
Surface Mount Package SOT-223, TO-252, TO-220, SOT-89, TO-263, & SO-8
APPLICATIONS
SCSI-II Active Terminator
Portable/ Palm Top / Notebook Computers
Battery Chargers
Disk Drives
Portable Consumer Equipment
Portable Instrumentation
SMPS Post-Regulator
PRODUCT DESCRIPTION
The AS1117 is a low power positive-voltage regulator designed to meet 800mA 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 AS1117 features very low quiescent current and very low dropout voltage of 1.2V at a
full load and lower as output current decreases. AS1117 is available as an adjustable or fixed 1.5V, 2.5V, 3.0V, 3.3V, and 5.0V output
voltages.
The AS1117 is offered in a 3-pin surface mount package SOT-223, TO-252, TO-220 and TO-263. The output capacitor of 10µF or
larger is needed for output stability of AS1117 as required by most of the other regulator circuits.
ORDERING INFORMATION
TO-220
3-PIN
AS1117U
AS1117U-X
TO-263
3-PIN
AS1117T
AS1117T-X
SOT-223
3-PIN
AS1117M3
AS1117M3-X
PLASTIC
SOIC 8 PIN
AS1117S
AS1117S-X
TO-252
DPAK
AS1117R
AS1117R-X
X= Output Voltage (X = 1.5V, 2.5V, 3.0V, 3.3V, 5.0, or Blank for Adjustable)
PIN CONNECTIONS
Oper. Temp.
Range
-40°C to +85°C
-40°C to +85°C
8-Pin Surface Mount (S)
TO-220-3 (U)
SOT-223 (M3)
TO-263-3 (T)
TO-252 (R)
GND
N/C
VOUT
VOUT
18
27
AS1117
36
45
Top View
VIN
VIN AS1117
AS1117
1 23
VIN 1 2 3
N/C ADJ/GND VOUT VIN
Top View
ADJ/GND VOUT VIN
Front View
AS1117
123
ADJ/GND VOUT VIN
Top View
AS1117
1 23
ADJ/GND VOUT VIN
Front View
Rev. 10/6/00

AS1117
AS1117
ABSOLUTE MAXIMUM RATINGS
Power Dissipation..........................................Internally Limited
Lead Temp. (Soldering, 5 Seconds) ................................ 260°C
Storage Temperature Range ............................ -65° to +150°C
Operating Junction Temperature Range
AS1117 .................................................. -40C° to +125°C
Input Supply Voltage ......................................-20V to +20V
ESD Rating ............................................................2KV Min
ELECTRICAL CHARACTERISTICS at VIN = VOUT +1, Ta=25°C, CL =3.3µf, unless otherwise specified. Limits in
Boldface apply over the full operating temperature range.
Parameter
1.5V Version
Output Voltage
2.5V Version
Output Voltage
3.0V Version
Output Voltage
3.3V Version
Output Voltage
5.0V Version
Output Voltage
All Output Options
Reference Voltage
Output Voltage
Temperature Stability
Line Regulation
Load Regulation
Dropout Voltage
( Note 2)
Quiescent Current
Current Limit
Thermal Regulation
Ripple Rejection
Long Term Stability
RMS Output Noise
Thermal Resistance
Conditions
IOUT = 10mA, VIN = 4.85V
0IOUT800mA, 4.25VIN10V
IOUT = 10mA, VIN = 4.85V
0IOUT800mA, 4.25VIN10V
IOUT = 10mA, VIN = 4.85V
0IOUT800mA, 4.75VIN10V
IOUT = 10mA, VIN = 5.0V
0IOUT800mA, 4.75VIN10V
IOUT = 10mA, VIN = 7.0V
0IOUT800mA, 6.50VIN12V
IOUT = 10mA, (VIN – VOUT) = 2V
10IOUT800mA, 1.4(VIN -VIN) 10V
(Note 1)
4.50V VIN12V, VOUT = 3.00, IOUT = 0
4.80V VIN12V, VOUT = 3.30, IOUT = 0
6.50V VIN15V, VOUT = 5.00, IOUT = 0
0IOUT800mA, VIN = 4.50V, VOUT = 3.00
0IOUT800mA, VIN = 4.80V, VOUT = 3.30
0IOUT800mA, VIN = 6.50V, VOUT = 5.00
IL = 100mA
IL = 500mA
IL = 800mA
4.25V VIN6.5V
(VIN-VOUT) = 5V
25°C,30mS Pulse
fRIPPLE = 120Hz, (Vin-VOUT) = 3V,
VRIPPLE = 1Vp-p
125°C, 1000Hrs
% of Vout, 10Hzf10kHz
Junction to case, at tab
Typ
1.500
2.500
3.000
3.300
5.000
1.250
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.05
1.10
5.00
1000
0.01
60
AS1117
Min Max
1.485
1.470
2.475
2.450
1.515
1.530
2.525
2.550
2.970
2.940
3.267
3.234
3.030
3.060
3.333
3.366
4.950
4.900
5.050
5.100
1.238
1.225
1.262
1.270
0.05
7.00
7.00
10.00
12.00
12.00
15.00
1.10
1.15
1.20
10.00
1200
0.1
75
0.03
0.003
15
Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range
Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential at very low values of
programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.
Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied. excluding load or line regulation effect.
Units
V
V
V
V
V
V
%
mV
mV
V
mA
mA
%/W
dB
%
%
°C/W°
Rev. 10/6/00


Features AS1117 800mA Low Dropout Regulator SCSI- II Active Terminator FEATURES • Guar anteed 800mA Output • Three Terminal Adjustable Or Fixed 1.5V, 2.5V, 3V, 3.3 V & 5V • Very Low Quiescent Current Low Dropout Voltage Of 1.2 Volts At Full Load • Extremely Tight Load And Line Regulation • Very Low Temperatur e Coefficient • Logic-Controlled Elec tronic Shutdown • Internal Overcurren t Limiting & Thermal Overload Protectio n • Surface Mount Package SOT-223, TO -252, TO-220, SOT-89, TO-263, & SO-8 A PPLICATIONS • SCSI-II Active Terminat or • Portable/ Palm Top / Notebook Co mputers • Battery Chargers • Disk D rives • Portable Consumer Equipment Portable Instrumentation • SMPS Po st-Regulator PRODUCT DESCRIPTION The A S1117 is a low power positive-voltage r egulator designed to meet 800mA output current and comply with SCSI-II specifi cations with a fixed output voltage of 2.85V. This device is an excellent choi ce for use in battery-powered applications, as active terminators for the SCSI bus, and portabl.
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