Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)

LMR36501

ACTIVE

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

Order now
Data sheet

LMR36501

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 0.1 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Light Load Efficiency, Soft Start Fixed, Spread Spectrum Vout (min) (V) 1 Vout (max) (V) 16 Iq (typ) (µA) 4
Rating Catalog Operating temperature range (°C) -40 to 150 TI functional safety category Functional Safety-Capable Topology Buck Type Converter Iout (max) (A) 0.1 Vin (min) (V) 3 Vin (max) (V) 65 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 2200 Features Enable, Forced PWM, Light Load Efficiency, Soft Start Fixed, Spread Spectrum Vout (min) (V) 1 Vout (max) (V) 16 Iq (typ) (µA) 4
VQFN-HR (RPE) 9 4 mm² 2 x 2
  • 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)

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.

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.
filter Find other AC/DC & DC/DC converters (integrated FET)
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* Data sheet LMR3650x 3-V to 65-V, 100-mA and 150-mA Wide VIN Synchronous Buck Converter Optimized for Size and Light Load Efficiency datasheet (Rev. A) PDF | HTML 25 May 2023
EVM User's guide LMR36501EVM User’s Guide PDF | HTML 19 Jun 2023
Certificate LMR36501EVM EU RoHS Declaration of Conformity (DoC) 15 Mar 2023
Functional safety information LMR36502 and LMR36501 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 14 Mar 2023
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
Application brief Powering Drones With a Wide VIN DC-DC Converter (Rev. A) 05 Feb 2019
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LMR36502EVM — LMR36502 evaluation module for wide-input-voltage, 65-V 150-mA synchronous step-down converter

The LMR36502EVM evaluation module (EVM) helps designers evaluate the operation and performance of the LMR36502 wide-input buck regulator. The LMR36502 is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 150 mA of load current from an input voltage of up to 65 V. The (...)

User guide: PDF | HTML
Not available on TI.com
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RPE) 9 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos