LM3103MHIn StockTexas Instruments
LM3103MH is a current-mode step-down voltage regulator from Texas Instruments, supporting 4.5V to 42V input, adjustable output down to 0.6V, in a compact 16-pin SOIC package for industrial and automotive power supply applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- LM3103MH Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode control for fast transient response and improved stability
- Wide input voltage range of 4.5V to 42V suits diverse power supply designs
- Adjustable output voltage down to 0.6V for flexible regulation
- 16-pin Small Outline Package (SOIC) for space-efficient PCB integration
- Suitable for industrial and automotive applications requiring robust regulation
Applications
The LM3103MH is widely used in industrial power supplies, automotive electronics, and embedded systems requiring efficient DC-DC step-down conversion. Its wide input range and adjustable output make it ideal for battery-powered devices, motor drive controllers, and distributed power architectures. The current-mode control topology ensures reliable performance in noise-sensitive and high-reliability environments.
Specifications
| Reach Compliance Code | Not Compliant |
| YTEOL | 0 |
| Additional Feature | ADJUSTABLE OUTPUT VOLTAGE DOWN TO 0.6V; SEATED HGT-NOM |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Input Voltage-Max | 42V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 18V |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Output Current-Max | 0.75A |
| Output Voltage-Nom | 6V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 42mA |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1000kHz |
| Technology | BICMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Tin/Lead (Sn85Pb15) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM3103MH:
Switching Regulator, Voltage-mode, 0.75A, 1000kHz Switching Freq-Max, MOS, PDSO16
Frequently Asked Questions
What is the input voltage range of the LM3103MH?
The LM3103MH supports an input voltage range of 4.5V to 42V, with a nominal operating voltage of 18V, making it suitable for a wide range of industrial and automotive power supply designs.
What is the minimum output voltage the LM3103MH can regulate to?
The LM3103MH features an adjustable output voltage that can be set as low as 0.6V, providing flexibility for powering a variety of low-voltage loads in step-down (buck) converter applications.
What control mode does the LM3103MH use and what package is it available in?
The LM3103MH uses current-mode control, which provides fast transient response and simplified compensation. It is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, offering a compact footprint for space-constrained designs.
Related Guides
Ultra Low Power Microcontroller Comparison 2026: STM32L4 vs MSP430 vs MSP432 vs CC2640
Engineer-grade 2026 comparison of ultra-low-power MCUs — STM32L476, MSP430A139, MSP432P401R, CC2640F128 across standby current, active current, and battery life.
May 5, 2026
BOM Cost Reduction: 7 Strategies for Electronics Manufacturers in 2026
Practical 2026 BOM optimization playbook — 7 proven strategies, ranked by payback time and risk. With realistic per-unit savings and verification steps.
May 5, 2026
STM32F072C8T6 Pin-Compatible Alternatives 2026: Cheaper Drop-In Options Compared
Engineer-grade compatibility analysis for STM32F072C8T6 alternatives in 2026 — pin compatibility, firmware portability, cost and lead time for each option.
May 5, 2026
Top Microcontrollers for IoT 2026: ESP32 vs Arduino vs STM32 vs RPi Pico
The five IoT MCU platforms compared on 2026 pricing, lead time, and use case — ESP32-S3, Arduino, STM32F0, RP2040, TI CC2640/CC1352P.
May 5, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”