Datasheet LT3082 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 200mA Single Resistor Low Dropout Linear Regulator |
| Páginas / Página | 20 / 1 — FEATURES. DESCRIPTION. Outputs May Be Paralleled for Higher Output. … |
| Formato / tamaño de archivo | PDF / 301 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Outputs May Be Paralleled for Higher Output. Current or Heat Spreading. Maximum Output Current: 200mA
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LT3082 200mA Single Resistor Low Dropout Linear Regulator
FEATURES DESCRIPTION
n
Outputs May Be Paralleled for Higher Output
The LT®3082 is a 200mA low dropout linear regulator that
Current or Heat Spreading
can be paralleled to increase output current or spread heat n
Maximum Output Current: 200mA
in surface mounted boards. Architected as a precision n
Wide Input Voltage Range: 1.2V to 40V
current source and voltage follower, this regulator benefi ts n
Output Adjustable to 0V
many applications requiring high current, adjustability to n
Stable with Minimum 2.2μF Ceramic Capacitors
zero and no heat sink. The LT3082 withstands reverse n
Single Resistor Sets Output Voltage
input voltages and reverse output-to-input voltages without n
Initial Set Pin Current Accuracy: 1%
reverse-current fl ow. n
Low Output Noise: 33μVRMS (10Hz to 100kHz)
A key feature of the LT3082 is the capability to supply a n
Reverse-Battery Protection
wide output voltage range. A precision “0” TC 10μA ref- n
Reverse-Current Protection
erence current source drives a single resistor to program n <1mV Load Regulation Typical the output voltage to any level between zero and 38.5V. n <0.001%/ V Line Regulation Typical The LT3082 is stable with only 2.2μF of capacitance on n Current Limit and Thermal Shutdown Protection the output; the IC uses small ceramic capacitors that n Available in 8-Lead SOT-23, 3-Lead SOT-223 and do not require additional ESR as is common with other 8-Lead 3mm × 3mm DFN Packages regulators.
APPLICATIONS
Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and ther- n All-Surface Mount Power Supply mal limiting. The LT3082 is offered in the thermally en- n Post Regulator for Switching Supplies hanced 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm n Low Parts Count Variable Voltage Supply × 3mm DFN packages. n Low Output Voltage Supply n Battery Powered Regulator L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION SET Pin Current vs Temperature Variable Output Voltage Battery Powered Supply
10.100 10.075 IN LT3082 10.050 9V 1μF 10μA 10.025 + 10.000 – 9.975 SET PIN CURRENT (μA) SET OUT 9.950 VOUT = 10μA • RSET 9.925 C R SET SET COUT 0.1μF 500k 2.2μF 9.900 –50 –25 0 25 50 75 100 125 150 3082 TA01a TEMPERATURE (°C) 3082 TA01b 3082f 1
FEATURES DESCRIPTION
n
Outputs May Be Paralleled for Higher Output
The LT®3082 is a 200mA low dropout linear regulator that
Current or Heat Spreading
can be paralleled to increase output current or spread heat n
Maximum Output Current: 200mA
in surface mounted boards. Architected as a precision n
Wide Input Voltage Range: 1.2V to 40V
current source and voltage follower, this regulator benefi ts n
Output Adjustable to 0V
many applications requiring high current, adjustability to n
Stable with Minimum 2.2μF Ceramic Capacitors
zero and no heat sink. The LT3082 withstands reverse n
Single Resistor Sets Output Voltage
input voltages and reverse output-to-input voltages without n
Initial Set Pin Current Accuracy: 1%
reverse-current fl ow. n
Low Output Noise: 33μVRMS (10Hz to 100kHz)
A key feature of the LT3082 is the capability to supply a n
Reverse-Battery Protection
wide output voltage range. A precision “0” TC 10μA ref- n
Reverse-Current Protection
erence current source drives a single resistor to program n <1mV Load Regulation Typical the output voltage to any level between zero and 38.5V. n <0.001%/ V Line Regulation Typical The LT3082 is stable with only 2.2μF of capacitance on n Current Limit and Thermal Shutdown Protection the output; the IC uses small ceramic capacitors that n Available in 8-Lead SOT-23, 3-Lead SOT-223 and do not require additional ESR as is common with other 8-Lead 3mm × 3mm DFN Packages regulators.
APPLICATIONS
Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and ther- n All-Surface Mount Power Supply mal limiting. The LT3082 is offered in the thermally en- n Post Regulator for Switching Supplies hanced 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm n Low Parts Count Variable Voltage Supply × 3mm DFN packages. n Low Output Voltage Supply n Battery Powered Regulator L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION SET Pin Current vs Temperature Variable Output Voltage Battery Powered Supply
10.100 10.075 IN LT3082 10.050 9V 1μF 10μA 10.025 + 10.000 – 9.975 SET PIN CURRENT (μA) SET OUT 9.950 VOUT = 10μA • RSET 9.925 C R SET SET COUT 0.1μF 500k 2.2μF 9.900 –50 –25 0 25 50 75 100 125 150 3082 TA01a TEMPERATURE (°C) 3082 TA01b 3082f 1