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LMR36501
  • LMR36501
  • LMR36501

LMR36501

ACTIVE

65-V, 100-mA low-IQ synchronous step-down converter

Texas Instruments LMR36501 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

0.1

Vin (max) (V)

65

Vin (min) (V)

3

Vout (max) (V)

16

Vout (min) (V)

1

Features

Enable, Forced PWM, Light Load Efficiency, Soft Start Fixed, Spread Spectrum

EMI features

Low parasitic Hotrod packaging

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000004

TI functional safety category

Functional Safety-Capable

Package

VQFN-HR (RPE)-9-4 mm² 2 x 2

Features

  • Functional Safety-Capable
  • Designed for rugged industrial applications:
    • Junction temperature range –40°C to +150°C
    • Input transient protection up to 70 V
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Minimized switch node ringing to reduce EMI
    • Adjustable and fixed output 3.3-V and 5-V voltage options available
  • Suited for scalable industrial power supplies:
    • Pin compatible with LMR36503 (65 V, 300 mA) and LMR36506 (65 V, 600 mA)
    • Adjustable switching frequency: 200 kHz to 2.2 MHz with RT pin variant
  • Minimized solution size and cost:
    • Ultra-small, 2-mm × 2-mm HotRod™ package
  • High efficiency across load range with low power dissipation:
    • Greater than 80% peak efficiency at 1 MHz (3.3-V V OUT)
  • Functional Safety-Capable
  • Designed for rugged industrial applications:
    • Junction temperature range –40°C to +150°C
    • Input transient protection up to 70 V
    • Wide input voltage range: 3.0 V (falling threshold) to 65 V
    • Minimized switch node ringing to reduce EMI
    • Adjustable and fixed output 3.3-V and 5-V voltage options available
  • Suited for scalable industrial power supplies:
    • Pin compatible with LMR36503 (65 V, 300 mA) and LMR36506 (65 V, 600 mA)
    • Adjustable switching frequency: 200 kHz to 2.2 MHz with RT pin variant
  • Minimized solution size and cost:
    • Ultra-small, 2-mm × 2-mm HotRod™ package
  • High efficiency across load range with low power dissipation:
    • Greater than 80% peak efficiency at 1 MHz (3.3-V V OUT)

Description

The LMR3650x is the industry smallest 65-V, 150-mA, 100-mA synchronous step-down DC/DC converter in 4-mm 2 HotRod package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and supports fixed, 3.3 V, 5 V and other adjustable output voltages.

The LMR3650x uses the peak current mode control architecture with internal compensation to maintain stable operation with minimal output capacitance. The LMR3650x with the right resistor selection from the RT pin to ground can be externally programmed to any desired switching frequency of operation over a wide range from 200 kHz to 2.2 MHz. The precision EN/UVLO feature allows precise control of the device during the start-up and shutdown. The PGOOD flag, with built-in glitch filter and delayed release, offers a true indication of the system status, eliminating the requirement for an external voltage supervisor. The compact solution size and rich feature set of LMR3650x simplifies implementation for a wide range of industrial applications.

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