LT3080EST#PBF

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LT3080EST#PBF

IC REG LIN POS ADJ 1.1A SOT223-3

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Spezifikationen

Package Tube
ProductStatus Active
OutputConfiguration Positive
OutputType Adjustable
NumberofRegulators 1
Voltage-Input(Max) 36V
Voltage-Output(Min/Fixed) 0V
Voltage-Output(Max) 36V
VoltageDropout(Max) 1.6V @ 1.1A
Current-Output 1.1A
Current-Quiescent(Iq) 500 µA
Current-Supply(Max) 30 mA
PSRR 75db ~ 20dB (120Hz ~ 1MHz)
ProtectionFeatures Over Current, Over Temperature, Short Circuit
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case TO-261-4, TO-261AA

Übersicht

Description

LT3080EST#PBF is Linear Technology’s adjustable 1.1 A linear regulator with a current reference. The output voltage is set with a single resistor on the SET pin (Vout ≈ ISET × RSET, with ISET provided inside the part). It can function as a programmable voltage regulator or as a precise current source when used with external resistors. Key features include a wide input range (up to about 36 V), low dropout at light load, remote sensing, current limit, and thermal shutdown. The EST suffix denotes Extended Temperature (typically -40°C to 125°C); #PBF indicates Pb-free packaging. Typical packages include 8-pin MSOP or SO-8. Common applications: adjustable power supplies, LED drivers, battery chargers, and other flexible, compact regulation needs. For exact pinout, recommended component values, and the governing equations, consult the LT3080 datasheet.

Features

Here are the key features of LT3080EST#PBF:
- 1.1A adjustable, low-dropout regulator built around a current reference (ISET).
- Input range up to 36V.
- Output set with a single resistor (RSET) from VSET to VOUT; VOUT ≈ ISET × RSET (ISET ≈ 50 µA, typical).
- Output can range from 0 to VIN (wide compliance) with simple resistor programming.
- Low dropout suitable for quasi-LDO operation (typical VDROP ≈ 0.3–0.5 V at 1 A).
- Fast transient response and good line/load regulation.
- Protected operation: current limit and thermal shutdown.
- Extended temperature range (-40°C to 125°C).
- Pb-free (PBF) package/lead-free process variant.

Package

LT3080EST#PBF comes in an 8-pin MSOP package (MSOP-8), Pb-free variant.

Pinout

- Pin count: 8 pins (LT3080EST#PBF is an 8‑pin package, lead‑free).
- Function: It is an adjustable current source / voltage regulator. It provides a fixed reference current at the ISET pin (about 50 µA) that you use with external resistors to set the output current, and the VOUT pin provides the regulated output. VIN supplies the device, and GND is the reference. The remaining pins are No Connect on this package or NC per the datasheet. It can be configured as a programmable constant‑current source or a low‑noise voltage regulator, with typical output up to roughly 1 A (depending on the external network and dissipation).

Manufacturer

Analog Devices, Inc. (the company that owns the Linear Technology brand). Analog Devices is a multinational semiconductor company specializing in analog, mixed-signal, and power-management integrated circuits.

Application

LT3080EST#PBF is a 1.1A adjustable, low-noise linear regulator with a current reference (SET pin) for easy voltage programming. Applications:
- Adjustable post-regulator using an external pass transistor for high current
- Local precision supply for analog/mixed-signal circuits (op-amps, ADCs/DACs, sensors)
- Noise/line-regulation improvement for switching converters
- Battery-powered or wide-input-range devices with low quiescent current
- Bench/power supplies using the SET resistor to set Vout
- Dual or tracking rails with simple resistor networks

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