Datasheet LT3080 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Adjustable 1.1A Single Resistor Low Dropout Regulator |
| Páginas / Página | 28 / 1 — FEATURES. DESCRIPTION. Outputs May Be Paralleled for Higher Current. … |
| Revisión | D |
| Formato / tamaño de archivo | PDF / 1.4 Mb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Outputs May Be Paralleled for Higher Current. and Heat Spreading. Output Current: 1.1A
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LT3080 Adjustable1.1A Single Resistor Low Dropout Regulator
FEATURES DESCRIPTION
n
Outputs May Be Paralleled for Higher Current
The LT®3080 is a 1.1A low dropout linear regulator that
and Heat Spreading
can be paralleled to increase output current or spread n
Output Current: 1.1A
heat in surface mounted boards. Architected as a preci- n
Single Resistor Programs Output Voltage
sion current source and voltage follower allows this new n
1% Initial Accuracy of SET Pin Current
regulator to be used in many applications requiring high n
Output Adjustable to 0V
current, adjustability to zero, and no heat sink. Also the n
Low Output Noise: 40µVRMS (10Hz to 100kHz)
device brings out the collector of the pass transistor to n
Wide Input Voltage Range: 1.2V to 36V
allow low dropout operation —down to 350 millivolts— n
Low Dropout Voltage: 350mV (Except
when used with multiple supplies.
SOT-223 Package)
A key feature of the LT3080 is the capability to supply n <1mV Load Regulation a wide output voltage range. By using a reference cur- n <0.001%/V Line Regulation rent through a single resistor, the output voltage is pro- n Minimum Load Current: 0.5mA grammed to any level between zero and 36V. The LT3080 n Stable with 2.2µF Minimum Ceramic Output Capacitor is stable with 2.2µF of capacitance on the output, and n Current Limit with Foldback and Overtemperature the IC uses small ceramic capacitors that do not require Protected additional ESR as is common with other regulators. n Available in 8-Lead MSOP, 3mm × 3mm DFN, n 5-Lead DD-Pak, TO-220 and 3-Lead SOT-223 Internal protection circuitry includes current limiting and n AEC-Q100 Qualified for Automotive Applications thermal limiting. The LT3080 regulator is offered in the 8-lead MSOP (with an exposed pad for better thermal characteristics), a 3mm × 3mm DFN, 5-lead DD-Pak,
APPLICATIONS
TO-220 and a simple-to-use 3-lead SOT-223 version. n High Current All Surface Mount Supply All registered trademarks and trademarks are the property of their respective owners. n High Efficiency Linear Regulator n Post Regulator for Switching Supplies n Low Parts Count Variable Voltage Supply n Low Output Voltage Power Supplies
TYPICAL APPLICATION Set Pin Current Distribution Variable Output Voltage 1.1A Supply
N = 13792 V IN LT3080 IN 1.2V TO 36V VCONTROL + 1µF – OUT VOUT SET 2.2µF RSET VOUT = RSET • 10µA 9.80 9.90 10.00 10.10 10.20 3080 TA01a SET PIN CURRENT DISTRIBUTION (µA) 3080 G02 Rev. D Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Output Voltage Stability and Output Capacitance Paralleling Devices Thermal Performance Quieting the Noise Overload Recovery Load Regulation Thermal Considerations T Package, 5-Lead TO-220 Calculating Junction Temperature Reducing Power Dissipation Typical Applications Package Description Revision History Typical Application Related Parts
FEATURES DESCRIPTION
n
Outputs May Be Paralleled for Higher Current
The LT®3080 is a 1.1A low dropout linear regulator that
and Heat Spreading
can be paralleled to increase output current or spread n
Output Current: 1.1A
heat in surface mounted boards. Architected as a preci- n
Single Resistor Programs Output Voltage
sion current source and voltage follower allows this new n
1% Initial Accuracy of SET Pin Current
regulator to be used in many applications requiring high n
Output Adjustable to 0V
current, adjustability to zero, and no heat sink. Also the n
Low Output Noise: 40µVRMS (10Hz to 100kHz)
device brings out the collector of the pass transistor to n
Wide Input Voltage Range: 1.2V to 36V
allow low dropout operation —down to 350 millivolts— n
Low Dropout Voltage: 350mV (Except
when used with multiple supplies.
SOT-223 Package)
A key feature of the LT3080 is the capability to supply n <1mV Load Regulation a wide output voltage range. By using a reference cur- n <0.001%/V Line Regulation rent through a single resistor, the output voltage is pro- n Minimum Load Current: 0.5mA grammed to any level between zero and 36V. The LT3080 n Stable with 2.2µF Minimum Ceramic Output Capacitor is stable with 2.2µF of capacitance on the output, and n Current Limit with Foldback and Overtemperature the IC uses small ceramic capacitors that do not require Protected additional ESR as is common with other regulators. n Available in 8-Lead MSOP, 3mm × 3mm DFN, n 5-Lead DD-Pak, TO-220 and 3-Lead SOT-223 Internal protection circuitry includes current limiting and n AEC-Q100 Qualified for Automotive Applications thermal limiting. The LT3080 regulator is offered in the 8-lead MSOP (with an exposed pad for better thermal characteristics), a 3mm × 3mm DFN, 5-lead DD-Pak,
APPLICATIONS
TO-220 and a simple-to-use 3-lead SOT-223 version. n High Current All Surface Mount Supply All registered trademarks and trademarks are the property of their respective owners. n High Efficiency Linear Regulator n Post Regulator for Switching Supplies n Low Parts Count Variable Voltage Supply n Low Output Voltage Power Supplies
TYPICAL APPLICATION Set Pin Current Distribution Variable Output Voltage 1.1A Supply
N = 13792 V IN LT3080 IN 1.2V TO 36V VCONTROL + 1µF – OUT VOUT SET 2.2µF RSET VOUT = RSET • 10µA 9.80 9.90 10.00 10.10 10.20 3080 TA01a SET PIN CURRENT DISTRIBUTION (µA) 3080 G02 Rev. D Document Feedback For more information www.analog.com 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Output Voltage Stability and Output Capacitance Paralleling Devices Thermal Performance Quieting the Noise Overload Recovery Load Regulation Thermal Considerations T Package, 5-Lead TO-220 Calculating Junction Temperature Reducing Power Dissipation Typical Applications Package Description Revision History Typical Application Related Parts