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LT3756EMSE-1#TRPBF
LT3756EMSE-1#TRPBF
| Part Number | LT3756EMSE-1#TRPBF |
|---|---|
| Manufacturer | Analog Devices (Linear Technology) |
| Category | Integrated Circuits (ICs) > PMIC – LED Drivers |
| Description | High Side Current Mode LED Controller, 6V to 100V Input, Boost/Buck/SEPIC Topology, 16-Lead MSOP Package with Exposed Pad, Tape & Reel. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The LT3756EMSE-1#TRPBF is a high-performance DC/DC constant-current controller for high-current LEDs. Manufactured by Analog Devices, it supports a wide 6V–100V input range and multiple conversion topologies including Boost, Buck, Buck-Boost, SEPIC and Flyback. The -1 variant features an internal PWM sync pin for external clock synchronization to eliminate beat frequencies in multi-driver systems. Equipped with 3000:1 True Color PWM dimming and 10:1 analog dimming, this IC comes in thermally enhanced 16-lead MSOP package with exposed pad for stable, high-efficiency operation in compact, heat-limited industrial, automotive and architectural lighting equipment.
Core Advantages
Ultra-Wide Input Voltage
6V to 100V operating range resists voltage surges, suitable for high-voltage series LED strings.
Multi-Topology Compatibility
Supports Boost/Buck/Buck-Boost/SEPIC/Flyback modes for flexible hardware design.
High Precision Dimming
3000:1 PWM dimming + 10:1 analog dimming delivers smooth brightness without color shift.
External Frequency Sync (-1 Version Exclusive)
Replace standard status pin with sync input to lock switching frequency and reduce EMI interference.
Key Specifications
| Brand | Analog Devices / Linear Technology (ADI) |
|---|---|
| Product Type | DC-DC LED Driver Controller |
| RoHS Status | RoHS Compliant / Lead-Free |
| EDA/CAD Model | Ultra Librarian footprints, 3D CAD models, and LTspice simulation macros are available on request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 16-MSOP (3.00 mm × 4.00 mm) |
| Channel Count | 1 Channel |
| Mounting Type | Surface Mount Technology (SMT / SMD Solder Reflow) |
| Surface Marking / Silkscreen | 37561 Marking |
| Topology Compatibility | Boost, Buck, Buck-Boost, SEPIC, Flyback |
| Input Voltage Range | 6V to 100V DC |
| Switching Frequency | Programmable from 100 kHz to 1 MHz (via single resistor) |
| Dimming Controls | True Color PWM™ (Up to 3000:1), Analog Dimming (Up to 10:1) |
| LED Current Sensing Range | 0V to 100mV high-side current sense threshold |
| Gate Driver Output | Robust internal driver optimized for high-voltage, low on-resistance external N-channel MOSFETs |
| Protection Features | Open LED / Short Circuit, Programmable Overvoltage Protection, Fault Reporting |
| Operating Junction Temperature | -40°C to +125°C (Extended / Industrial range) |
Typical Applications
- High-power automotive LED headlights, daytime running lights (DRL), and fog lights
- Industrial, architectural, and stadium high-voltage projection systems
- Precise constant-current battery charging and solar-powered regulators
- High-efficiency street lighting and warehouse high-bay illumination
- Backlighting arrays in medical imaging displays and large-format LCD monitors
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What is the difference between LT3756 and LT3756-1?
A1: Standard LT3756 has OPEN_OUT pin for LED fault alert; LT3756-1 replaces it with SYNC pin to synchronize oscillator with external clock and lower EMI.
Q2: Why high-side sensing suits LED driver circuits?
A2: It lets LED negative side connect directly to ground plane, cuts wiring noise and protects IC during LED short-circuit to ground.
Q3: How to reach 3000:1 dimming ratio with LT3756EMSE-1?
A3: Dedicated PWM pin drives external PMOS in LED string, fast on/off switching avoids filter capacitor discharge, keeps stable color under narrow duty cycles.
Q4: What thermal advantages does EMSE package bring?
A4: 16-lead MSOP with exposed thermal pad. Solder pad to PCB copper ground plane to reduce thermal resistance and run safely at higher ambient temperature.
Q5: What applications fit LT3756EMSE-1#TRPBF?
A5: Automotive lighting, industrial LED lamps, architectural landscape lighting, high-voltage constant-current LED modules.
Q6: Can I get free samples of this chip?
A6: Yes, submit sample demand via inquiry form, we provide free samples with small shipping cost covered by buyer.
Q7: What topology modes can this IC support?
A7: Boost, Buck, Buck-Boost, SEPIC and Flyback, flexible for various LED power supply designs.
Q8: What’s the input voltage operating range?
A8: Wide 6V to 100V DC input, withstands transient voltage surges in vehicle and industrial power systems.
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