規格
| 屬性 | 價值 |
| Supplier | Analog Devices Inc. |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive and Negative |
| Topology | Boost, Flyback, SEPIC |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 2.9V ~ 40V |
| Frequency-Switching | 100kHz ~ 1MHz |
| SynchronousRectifier | No |
| ClockSync | Yes |
| ControlFeatures | Enable, Frequency Control, Soft Start |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 10-WFDFN Exposed Pad |
概述
Description
LT3757EDD#TRPBF is Linear Technology/Analog Devices’ high‑voltage buck/boost LED driver controller in a Pb‑free EDD package (Tape & Reel). It drives a string of LEDs from a wide input range (roughly 4.5–60 V) by switching an external MOSFET in buck or boost mode and regulating current through a sense resistor. Key features: current‑mode regulation, programmable LED current, PWM and analog dimming, soft‑start, and protections such as short‑circuit, overvoltage, and thermal shutdown. Typical uses include automotive lighting, LED backlighting, and general LED drivers. For exact electrical specs (LED current range, switching frequency, etc.), consult the LT3757 datasheet.
Features
Here are the typical features of the LT3757EDD#TRPBF (LT3757 controller in EDD package, Tape & Reel):
- Wide input voltage range (up to about 60V)
- Buck-boost DC-DC controller (supports buck, boost, or buck-boost operation)
- Current-mode PWM control with cycle-by-cycle current limit
- Programmable switching frequency (range varies; supports high-frequency operation)
- Soft-start to limit input/output surge
- Enable/UVLO input for power sequencing
- Overvoltage, undervoltage, short-circuit protection, and thermal shutdown (fault latch)
- Fault reporting/flag capability
- Drives external N-channel MOSFETs (controller with gate drive outputs)
- RoHS-compliant, lead-free packaging (TRPBF tape-and-reel)
Note: exact electrical numbers (Vin range, freqs, tolerances) are in the official datasheet. The LT3757 variant in EDD#TRPBF is a tape-and-reel, RoHS package; verify current specs for your design.
- Wide input voltage range (up to about 60V)
- Buck-boost DC-DC controller (supports buck, boost, or buck-boost operation)
- Current-mode PWM control with cycle-by-cycle current limit
- Programmable switching frequency (range varies; supports high-frequency operation)
- Soft-start to limit input/output surge
- Enable/UVLO input for power sequencing
- Overvoltage, undervoltage, short-circuit protection, and thermal shutdown (fault latch)
- Fault reporting/flag capability
- Drives external N-channel MOSFETs (controller with gate drive outputs)
- RoHS-compliant, lead-free packaging (TRPBF tape-and-reel)
Note: exact electrical numbers (Vin range, freqs, tolerances) are in the official datasheet. The LT3757 variant in EDD#TRPBF is a tape-and-reel, RoHS package; verify current specs for your design.
Pinout
- Pin count: 14 pins (in the EDD package).
- Function: High-voltage, inductor-based buck/boost switching regulator controller that uses external N-channel MOSFET with current‑mode control (programmable freq, soft-start, overcurrent/short‑circuit protections).
- Function: High-voltage, inductor-based buck/boost switching regulator controller that uses external N-channel MOSFET with current‑mode control (programmable freq, soft-start, overcurrent/short‑circuit protections).
Manufacturer
- Manufacturer: Analog Devices, Inc. (ADI).
- Company type: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits (the LT prefix comes from Linear Technology, which ADI acquired in 2017).
- Company type: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits (the LT prefix comes from Linear Technology, which ADI acquired in 2017).
Application
LT3757EDD#TRPBF is a high‑voltage DC‑DC controller (buck/boost topology with external MOSFETs). Typical application areas:
- Automotive power supplies (9–65V input to stable 5–12V rails, with load-dump handling)
- Buck/boost regulators in battery-powered systems needing up/down regulation
- Non‑isolated converters (SEPIC/buck‑boost or flyback) using external FETs
- LED lighting drivers and backlight regulators
- Solar/battery charging and power-path management
- Telecom/industrial DC‑DC converters and distributed power architectures
Any high‑efficiency, wide-input, moderate-current buck‑boost regulator application.
- Automotive power supplies (9–65V input to stable 5–12V rails, with load-dump handling)
- Buck/boost regulators in battery-powered systems needing up/down regulation
- Non‑isolated converters (SEPIC/buck‑boost or flyback) using external FETs
- LED lighting drivers and backlight regulators
- Solar/battery charging and power-path management
- Telecom/industrial DC‑DC converters and distributed power architectures
Any high‑efficiency, wide-input, moderate-current buck‑boost regulator application.
Package
Package type: EDD. The suffix #TRPBF means Tape‑and‑Reel, Pb‑free (Pb-free).
