規格
| 屬性 | 價值 |
| 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 |
概述
Description
LT3080EST#PBF is the extended-temperature, Pb-free version of Linear Technology’s LT3080. The LT3080 is a 1.1 A adjustable low‑dropout linear regulator that uses a 10 μA current reference (ISET) to set VOUT with a single external resistor (RSET) between ISET and VOUT. VOUT ≈ ISET × RSET (ISET ≈ 10 μA), so you dial the output by choosing RSET. Key points: input up to about 34–36 V, output adjustable from near 0 V to VIN, can be used in voltage‑ or current‑source configurations, and includes current‑limit and thermal protection. It requires an output capacitor for stability. EST denotes extended temperature range; PBF indicates Pb‑free packaging. Typical packages include MSOP-8 or SO-8 variants. Applications: post-regulation, battery chargers, automotive and other environments needing a precise, adjustable regulator with good performance.
Features
Key features of LT3080EST#PBF (Pb-Free, Extended Temp):
- 1.1A adjustable positive linear regulator using an external current reference (ISET) to set Vout.
- Wide input range: VIN up to 36V; Vout can be adjusted from roughly 1.2V up to VIN.
- No minimum load required: regulates accurately down to zero load.
- Simple programming: Vout set with a single resistor network around the SET pin (ISET ≈ 10µA).
- Protection: output current limit and thermal shutdown for latch-free protection.
- Low dropout with fast transient response suitable for point-of-load and supply-replacement applications.
- Extended temperature grade (EST) with Pb-free packaging (PBF) for harsh environments.
- Package: 8-pin option (MSOP/SO-8 family) in Pb-free, RoHS-compliant format.
Note: Vout cannot exceed VIN; ensure proper headroom for your load and input voltage.
- 1.1A adjustable positive linear regulator using an external current reference (ISET) to set Vout.
- Wide input range: VIN up to 36V; Vout can be adjusted from roughly 1.2V up to VIN.
- No minimum load required: regulates accurately down to zero load.
- Simple programming: Vout set with a single resistor network around the SET pin (ISET ≈ 10µA).
- Protection: output current limit and thermal shutdown for latch-free protection.
- Low dropout with fast transient response suitable for point-of-load and supply-replacement applications.
- Extended temperature grade (EST) with Pb-free packaging (PBF) for harsh environments.
- Package: 8-pin option (MSOP/SO-8 family) in Pb-free, RoHS-compliant format.
Note: Vout cannot exceed VIN; ensure proper headroom for your load and input voltage.
Pinout
LT3080EST#PBF is an 8-pin adjustable low-dropout regulator (Pb-free, with an exposed pad).
Key pins and function:
- VIN: input supply (up to about 36V)
- VOUT: regulated output
- GND: reference/return
- SET: current-reference pin used with an external RSET to ground to set VOUT (ISET is internally generated; VOUT ≈ ISET × RSET)
- BYP: optional bypass capacitor for reduced output noise
- Other pins: remaining pins are no-connects on the package
- Exposed pad: bottom pad thermally tied to ground
In short: 8-pin device; VIN, VOUT, GND, SET (with RSET to ground to set VOUT), BYP for noise reduction; NC pins present; exposed pad to GND.
Key pins and function:
- VIN: input supply (up to about 36V)
- VOUT: regulated output
- GND: reference/return
- SET: current-reference pin used with an external RSET to ground to set VOUT (ISET is internally generated; VOUT ≈ ISET × RSET)
- BYP: optional bypass capacitor for reduced output noise
- Other pins: remaining pins are no-connects on the package
- Exposed pad: bottom pad thermally tied to ground
In short: 8-pin device; VIN, VOUT, GND, SET (with RSET to ground to set VOUT), BYP for noise reduction; NC pins present; exposed pad to GND.
Manufacturer
- Manufacturer: Analog Devices, Inc. (ADI). The LT3080 part originally from Linear Technology is now manufactured under Analog Devices after the Linear Technology acquisition.
- What kind of company: A multinational semiconductor company that designs, manufactures, and sells analog, mixed-signal, and digital signal processing integrated circuits; publicly traded on NASDAQ and one of the leading suppliers in its field.
- What kind of company: A multinational semiconductor company that designs, manufactures, and sells analog, mixed-signal, and digital signal processing integrated circuits; publicly traded on NASDAQ and one of the leading suppliers in its field.
Application
LT3080EST#PBF applications (highlights):
- Adjustable high-voltage linear regulator for bench supplies (up to ~36V, 1.1A)
- Programmable current source/sink and LED driver circuits
- Post-regulation stage for switching regulators to improve regulation and transient response
- Battery charging and power-management circuits
- Microprocessor and precision instrumentation power rails (low-noise, adjustable)
- Current-limit/protection networks and precision reference implementations in test equipment
Note: EST#PBF indicates the lead-free, tape-and-rereel packaging variant.
- Adjustable high-voltage linear regulator for bench supplies (up to ~36V, 1.1A)
- Programmable current source/sink and LED driver circuits
- Post-regulation stage for switching regulators to improve regulation and transient response
- Battery charging and power-management circuits
- Microprocessor and precision instrumentation power rails (low-noise, adjustable)
- Current-limit/protection networks and precision reference implementations in test equipment
Note: EST#PBF indicates the lead-free, tape-and-rereel packaging variant.
Package
LT3080EST#PBF is the Pb-free version in an 8‑pin MSOP (MSOP-8) surface‑mount package.
