Datasheet LT3083 (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | Adjustable 3A Single Resistor Low Dropout Regulator |
| Páginas / Página | 28 / 9 — PIN FUNCTIONS (DF/FE/Q/T Packages). OUT (Pins 1-5,13/Pins … |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 1.1 Mb |
| Idioma del documento | Inglés |
PIN FUNCTIONS (DF/FE/Q/T Packages). OUT (Pins 1-5,13/Pins 1-6,8,9,16,17/Pin 3, Tab/Pin 3,. Tab):
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PIN FUNCTIONS (DF/FE/Q/T Packages) OUT (Pins 1-5,13/Pins 1-6,8,9,16,17/Pin 3, Tab/Pin 3,
the device. Minimum input capacitance is 2.2µF (see Input
Tab):
Output. The exposed pad of the DF package (Pin 13) Capacitance and Stability in the Applications Information and the FE package (Pin 17) and the Tab of the DD-PAK section). The current flow into this pin is about 1.7% of and TO-220 packages is an electrical connection to OUT. the output current. For the device to regulate, this volt- Connect the exposed pad of the DF and FE packages and age must be more than 1.2V to 1.4V greater than the the Tab of the DD-PAK package directly to OUT on the output voltage (see dropout specifications in the Electrical PCB and the respective OUT pins for each package. There Characteristics section). must be a minimum load current of 1mA or the output
IN (Pins 9-12/Pins 12-15/Pin 5/Pin 5):
Power Input. may not regulate. This is the collector to the power device of the LT3083.
SET (Pin 6/Pin 7/Pin 2/Pin 2):
Set Point. This pin is the The output load current is supplied through this pin. non-inverting input to the error amplifier and the regula- Minimum IN capacitance is 10µF (see Input Capacitance tion set point. A fixed current of 50μA flows out of this and Stability in Applications Information section). For the pin through a single external resistor, which programs device to regulate, the voltage at this pin must be more the output voltage of the device. Output voltage range is than 0.1V to 0.5V greater than the output voltage (see zero to the VIN(MAX) – VDROPOUT. Transient performance dropout specifications in the Electrical Characteristics can be improved by adding a small capacitor from the section). SET pin to ground.
NC (NA/NA/Pin 1/Pin 1):
No Connection. No Connect
VCONTROL (Pins 7,8/Pins 10,11/Pin 4/Pin 4):
Bias pins have no connection to internal circuitry and may be Supply. This is the supply pin for the control circuitry of tied to VIN, VCONTROL, VOUT, GND, or floated.
BLOCK DIAGRAM
IN VCONTROL 50µA + – 3083 BD SET OUT Rev. B For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
PIN FUNCTIONS (DF/FE/Q/T Packages) OUT (Pins 1-5,13/Pins 1-6,8,9,16,17/Pin 3, Tab/Pin 3,
the device. Minimum input capacitance is 2.2µF (see Input
Tab):
Output. The exposed pad of the DF package (Pin 13) Capacitance and Stability in the Applications Information and the FE package (Pin 17) and the Tab of the DD-PAK section). The current flow into this pin is about 1.7% of and TO-220 packages is an electrical connection to OUT. the output current. For the device to regulate, this volt- Connect the exposed pad of the DF and FE packages and age must be more than 1.2V to 1.4V greater than the the Tab of the DD-PAK package directly to OUT on the output voltage (see dropout specifications in the Electrical PCB and the respective OUT pins for each package. There Characteristics section). must be a minimum load current of 1mA or the output
IN (Pins 9-12/Pins 12-15/Pin 5/Pin 5):
Power Input. may not regulate. This is the collector to the power device of the LT3083.
SET (Pin 6/Pin 7/Pin 2/Pin 2):
Set Point. This pin is the The output load current is supplied through this pin. non-inverting input to the error amplifier and the regula- Minimum IN capacitance is 10µF (see Input Capacitance tion set point. A fixed current of 50μA flows out of this and Stability in Applications Information section). For the pin through a single external resistor, which programs device to regulate, the voltage at this pin must be more the output voltage of the device. Output voltage range is than 0.1V to 0.5V greater than the output voltage (see zero to the VIN(MAX) – VDROPOUT. Transient performance dropout specifications in the Electrical Characteristics can be improved by adding a small capacitor from the section). SET pin to ground.
NC (NA/NA/Pin 1/Pin 1):
No Connection. No Connect
VCONTROL (Pins 7,8/Pins 10,11/Pin 4/Pin 4):
Bias pins have no connection to internal circuitry and may be Supply. This is the supply pin for the control circuitry of tied to VIN, VCONTROL, VOUT, GND, or floated.
BLOCK DIAGRAM
IN VCONTROL 50µA + – 3083 BD SET OUT Rev. B For more information www.analog.com 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts