Dropout Positive Adjustable Regulator DESCRIPTION AIC1117A d
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AIC1117A
Dropout Positive Adjustable Regulator
DESCRIPTION
AIC1117A dropout three terminal regulator with output current capability. output voltage adjustable with resistor divider fixed 2.85V, 3.3V, Dropout guaranteed maximum 1.5V maximum output current. dropout voltage fast transient response make ideal voltage microprocessor applications. Internal current thermal limiting provides protection against overload condition that would create excessive junction temperatures.
Dropout Voltage 1.3V Output Current. Fast Transient Response. Line Regulation typically 0.015%. Load Regulation typically 0.1%. Internal Thermal Current Limiting. Adjustable Output Voltage Fixed 2.85V, 3.3V, Standard 3-Pin Power Packages.
APPLICATIONS
Post Regulator Switching Supply. Active SCSI Termination. Battery Chargers. Constant-Current Regulators. Motherboard Clock Supplies.
TYPICAL APPLICATION CIRCUIT
10µF AIC1117A VREF
VREF=VOUT VADJ=1.25V (typ.)
VOUT 3.3V
VOUT=VREF (1+RF2/RF1)+ IADJ IADJ=55µA (typ.) needed device away from filter capacitors. required stability.
10µF
Adjustable Voltage Regulator
10µF
AIC1117A-33
VOUT 3.3V
10µF
Fixed Voltage Regulator
Analog Integrations Corporation DS-1117A-00 Industry Science Based Industrial Park, Hsinchu Taiwan, TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
AIC1117A
ORDERING INFORMATION
AIC1117A-XXCX
PACKAGING TYPE TO-252 TO-263 TO-220 SOT-223
ORDER NUMBER
AIC1117ACE (TO-252)
CONFIGURATION
FRONT VIEW VOUT (TAB)
DEFAULT:
ADJ. 2.85V 3.3V 5.0V
AIC1117ACM (TO-263)
FRONT VIEW VOUT (TAB)
AIC1117ACT (TO-220)
FRONT VIEW VOUT (TAB)
AIC1117ACY (SOT-223)
FRONT VIEW VOUT (TAB)
AIC1117A
ABSOLUTE MAXIMUM RATINS
ADJ/GND 125°C Operating Junction Temperature Range Power Dissipation .Internally Limited Thermal Resistance (Junction Case) TO-220 TO-263 SOT-223 TO-252 Thermal Resistance (Junction Ambient) TO-220 (Assume ambient airflow, heatsink) TO-263 SOT-223 TO-252 Storage Temperature Range .15°C .12.5°C 50°C/W .60°C/W .155°C/W .100°C/W
65°C 150°C .260°C
Lead Temperature (Soldering) sec.
ELECTRICAL CHARACTERISTICS
specified) PARAMETER
Reference Voltage
(VIN=5V, J=25°C, IO=10mA, Unless otherwise
TEST CONDITIONS
=25°C 0°CTJ 125°C 2.65VVIN7V 10mAIO1A AIC1117A-28, VIN=5V AIC1117A-33, VIN=5V AIC1117A-50, VIN=7V
MIN.
1.238 1.225
TYP.
1.25 1.25
MAX.
1.262 1.275
UNIT
2.82 3.26 4.95
2.85 3.30 5.00
2.88 3.33 5.05
Output Voltage
AIC1117A 0°CTJ 125°C 2.65VVIN7V 10mAIO1A 2.65VIN 0.98V 1.02V
Line Regulation
=25°C 0°CTJ 125°C
0.015 0.035
%VOUT
AIC1117A
ELECTRICAL CHARACTERISTICS
PARAMETER
Load Regulation 0°CTJ 125°C VOUT, VREF Dropout Voltage IO=1A 0°CTJ 125°C Current Limit 0°CTJ 125°C 2.65VIN Adjusted Current (IADJ) 10mAIO1A 0°CTJ 125°C 2.65VIN Adjusted Current Change (IADJ) 10mAIO1A 0°CTJ 125°C IO=0.5A Temperature Stability Minimum Load Current Adj. Quiescent Current Fixed Version) Output Noise VOUT) Ripple Rejection Ratio 0°CTJ 125°C 0°CTJ 125°C 0°CTJ 125°C 10Hzf10KHz
(Continued) MIN. TYP.
TEST CONDITIONS
=25°C, IO=10mA
MAX.
UNIT
%VOUT
0.003
VOUT %VOUT
120Hz input ripple COUT=25µF
AIC1117A
TYPICAL
PERFORMANCE CHARACTERISTICS
Load Transient Response
Line Transient Response
Output Voltage (mV, IN=5V IN=1µ OUT=10µF (Tantalum) OUT=3.3V
Output Voltage
0.05
-0.05 -0.1
-100
0.4A
Input Voltage
COUT =10µ (Tantalum) VOUT=3.3V
Load Current
0.1A
Time (µS)
Time (µS)
Minimum Differential Voltage
1.26
Dropout Voltage (VOUT=3.3V)
Minimum Operating Current (mA)
Minimum Operating Current
1.24
1.22
1.20
1.18
1.16 1000
Output Current (mA)
Differential Voltage
Minimum Load Current (Adjustable Version)
Minimum Load Current (mA)
J=125
J=125 TJ=0°C
Input/Output Differential
AIC1117A
BLOCK DIAGRAM
Current Amp. VREF 1.25V
Thermal Limit
Current Limit VOUT fixed voltage device
DESCRIPTIONS
(GND VOUT Providing VREF=1.25V (typ.) adjustable VOUT. VREF=VOUT-V IADJ=55µA (typ.) Power ground.) Adjustable output voltage. Power Input.
AIC1117A
PHYSICAL DIMENSIONS
TO-220 (unit:
3.81±0.27
SYMBOL
3.56 14.23 9.66 2.29 0.50 0.51 2.04 12.70
4.82 16.51 10.66 2.79 1.15 1.10 1.39 2.92 14.73
TO-252 (unit:
SYMBOL
2.19 1.02 0.64 5.21 0.46 5.33 6.35 2.28 (TYP.) 9.40 0.51
2.38 1.27 0.88 5.46 0.58 5.59 6.73
10.42
AIC1117A
SOT-223
1.80
SYMBOL
0.02 0.60 2.90 0.24 6.30 3.30
0.12 0.80 3.15 0.35 6.80 3.70
(PLCS)
2.30 (TYP.) 6.70 7.30
0.91
SOT-223 Marking
Part AIC1117ACY AIC1117A-28CY AIC1117A-33CY AIC1117A-50CY Marking BS17 BS28 BS33 BS50
TO-263 (unit:
SYMBOL
4.06 0.50 1.14 1.14 8.63 9.65 14.60 2.28
4.83 1.00 1.40 1.40 9.66 10.29 15.88 2.80 1.40
2.54 (TYP.)
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