LAN1165ED Series Automotive LED Driver Solutions|No EMI Interference, Fan Fault Non?Fatal, 2.5A High?Current Automotive LED Constant Current IC
Keywords: LAN1165ED, LAN1165ED Automotive LED Driver, Automotive LED Constant Current IC, 2.5A High?Current Driver, No EMI LED Driver, Fan Fault Non?Fatal, Built?in Overvoltage Protection, Low?Dropout Constant Current Driver, ESOP8 Package, 12V Automotive LED Driver, OTP LED Driver IC, GSMicro Semiconductor
Overview: LAN1165ED is a high?power low?dropout constant current driver IC designed for 12V automotive lamps. Minimal peripheral components, no EMI interference, fan fault non?fatal. Built?in 120℃ over?temperature protection, 15A/100V power MOS, 15V overvoltage protection, 2.5A high output current with 0.6V low dropout. Widely used in automotive headlights, motorcycle lamps, high?power LED lighting. LAN1165ED is the preferred solution for high?reliability automotive LED drivers.
LAN1165ED Product Overview
LAN1165ED is a dedicated low?dropout constant current IC for 12V automotive LEDs. Only two external resistors are required to form a complete constant current drive circuit, simple layout, no EMI interference, and the LED will not shut down even if the cooling fan fails, ensuring ultra?high reliability.
LAN1165ED integrates 120℃ over?temperature protection, which controls LED temperature within 130℃ under various cooling conditions for long?term stable operation.
LAN1165ED integrates a 15A/100V power MOS with a maximum application current of 2.5A. Adopting a low?dropout structure, the voltage drop is only 0.6V at 2.5A, lower heat and higher efficiency.
LAN1165ED features optional built?in overvoltage protection: output current automatically reduces when VIN reaches 15V to prevent damage from automotive voltage fluctuations. Packaged in ESOP8 for excellent heat dissipation.
LAN1165ED Key Features
LAN1165ED Ultra?minimal peripheral components, greatly improving circuit design and production efficiency
LAN1165ED Flexible LED temperature adjustment for various cooling environments
LAN1165ED Built?in high?current power MOS, saving external MOS cost and space
LAN1165ED Maximum output current 2.5A to meet high?power automotive LED requirements
LAN1165ED Overvoltage current?foldback protection, auto current reduction at 15V
LAN1165ED ESOP8 package, excellent heat dissipation for high?temperature automotive environments
LAN1165ED Applications
Automotive headlights, taillights, position lights, motorcycle lamps – all automotive lighting applications
High?power LED automotive lamps, EV lights, DC?powered LED lighting systems – strong compatibility
Motorcycle lamps, engineering machinery lights, high?power LED lighting drivers – reliable performance
LAN1165ED Typical Application Circuit

LAN1165ED Ordering Information
| Part Number | Package | Marking | Packing |
| LAN1165ED | ESOP8 | LAN1165ED HAYYWW | Tape & Reel 4000/Reel |
LAN1165ED Pin Description
| Pin | Symbol | Description |
| 1 | VIN | LAN1165ED Power Supply Input |
| 2 | GND | LAN1165ED Ground |
| 3 | CS | LAN1165ED Current Sense |
| 4 | S | LAN1165ED Power MOS Source |
| 5 | DR | LAN1165ED LED Constant Current Output, Connect to LED Cathode |
| 6 | HLT/NC | LAN1165ED No Connect / Temperature Select |
| 7 | SGND/NC | LAN1165ED No Connect / Signal Ground |
| 8 | SEL/NC | LAN1165ED No Connect / Overvoltage Protection Select |
| Pad | DR | LAN1165ED LED Driver Output, Connected to Pin 5 |
LAN1165ED Recommended Power Ratings
| Input Voltage | Output Voltage | Output Current |
| 12V | 9V | Not Recommended |
| 13.5V | 12V | 2A |
| 27V | 24V | Not Recommended |
LAN1165ED Electrical Specifications (VIN=12V, T=25℃)
| Symbol | Parameter | Condition | Typical | Unit |
| OP_VDD | LAN1165ED Operating Voltage | — | 7~100 | V |
| I_VDD | LAN1165ED Quiescent Current | VIN=12V | 180 | μA |
| VREF_CS | LAN1165ED Reference Voltage | Io=500mA | 300 | mV |
| RDS_ON | LAN1165ED On?Resistance | Io=1A | 100 | mΩ |
| IOUT | LAN1165ED Output Current | — | 2.5 | A |
| Treg | LAN1165ED OTP Trip Point | — | 120 | ℃ |
GSMicro Linear Automotive Headlight Driver IC Comparison
| Part Number | Package | Voltage Rating | OTP Temp | LED Voltage | Max Application Current |
| LAN1032AT | SOT89-5L | 48V | 140℃ | 9V | 0.6A @ Vin=13V Vout=9V |
| LAN1032E | ESOP8 | 48V | 140℃ | 9V | 0.8A @ Vin=13V Vout=9V |
| LAN1161ED | ESOP8 | 100V | 120℃ | 12V | 1.2A @ Vin=13.5V Vout=12V |
| LAN1163E | ESOP8 | 100V | 135℃ | 12V | 1.2A @ Vin=13.5V Vout=12V |
| LAN1165ED | ESOP8 | 100V | 120℃ | 12V | 2A @ Vin=13.5V Vout=12V |
| LAN1165E | ESOP8 | 100V | 135℃ | 12V | 2A @ Vin=13.5V Vout=12V |
| LAN1166ED | ESOP8 | 100V | 120℃ | 12V | 4A @ Vin=13.5V Vout=12V |
| LAN1166E | ESOP8 | 100V | 135℃ | 12V | 4A @ Vin=13.5V Vout=12V |
| LAN1168ED | ESOP8 | 200V | 120℃ | 24V | 1.2A @ Vin=27V Vout=24V |
| LAN1053A | ESOP8 | 100V | 135℃ | 9V | 1.2A @ Vin=13.5V Vout=9V |
| LAN1058A | ESOP8 | 200V | 135℃ | 24V | 1.2A @ Vin=27V Vout=24V |
LAN1165ED Replacement & Advantages
LAN1165ED directly replaces: PT4115, OC7102C and other traditional automotive LED drivers.
1. LAN1165ED Higher current: 2.5A max for high?power LEDs, competitors only 1.2A~1.5A
2. LAN1165ED No EMI interference, no inductor/capacitor required, fully AEC?EMC compliant
3. LAN1165ED Fan fault non?fatal, stable thermal protection, higher automotive safety
4. LAN1165ED Ultra?low dropout 0.6V @ 2A, lower heat, higher brightness
5. LAN1165ED Only 2 external resistors, lower BOM cost & higher production yield
Important Notes
① Models without full datasheet can use this document as specification. All standard models have built?in overvoltage current foldback, no external adjustment.
② Max output current: Io = 0.3V ÷ Rcs. High?quality automotive lamps recommended at 80% of max current.
③ Suffix E: ESOP8, 135℃ OTP; ED: 120℃ OTP, optimized for 12V LEDs.
④ ED version (low temp) recommended for 12V automotive lamps for long?term stability.
Company Introduction
GSMicro Semiconductor (Shenzhen) Co., Ltd. (GSMicro) founded in 2023, with predecessor LUMENCHIP established in 2010, headquartered in Shenzhen, China. We are a leading analog IC integration service brand focused on mixed?signal IC design and green intelligent technology.
GSMicro integrates global advanced models and channels, breaking traditional distribution models. We provide a dual?mode service: mixed distribution, market analysis, technical solution support, and one?stop supply chain. Our mission: customer?centric service, innovative products, global partner success.
GSMicro offers complete solutions and product lines: MCU, PMIC, AI IC, signal chain IC, power devices. Our products cover signal processing, voice wakeup, recognition, synthesis, and smart interaction. Authorized partners: DONGWOON, PowTech, CRHJ, APM, COOLSEMI, ANHI, Reasunos, OCX, MassChip, XLSEMI, NSIWAY, EGmicro, ChipWays, AISPEECH, Aerosemi, etc.
GSMicro adheres to the values: "People?oriented, Customer?centric, Value Contribution". We lead in IC distribution and application solutions for global semiconductor markets.
Official Website: http://huimai2.com/en-us/
[Sales / Samples] Hotline: +86 18018703531, WeChat: gsmicro_semi (Remark: LAN1165ED).