Product details

Vin (Min) (V) 3.6 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 32 Iout (Max) (A) 1 Iq (Typ) (uA) 1.5 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Features Enable, Fixed Output Operating temperature range (C) -40 to 150 Rating Automotive Regulated outputs (#) 1
Vin (Min) (V) 3.6 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 32 Iout (Max) (A) 1 Iq (Typ) (uA) 1.5 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2200 Features Enable, Fixed Output Operating temperature range (C) -40 to 150 Rating Automotive Regulated outputs (#) 1
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 89% efficiency at 1 mA, 13.5 VIN, 3.3 fixed VOUT
    • 1.2-µA total non-switching IQ at 13.5 VIN, 3.3 fixed VOUT
  • Miniature solution size and low component cost
    • 2-mm × 2-mm HotRod™ package with wettable flanks
    • Internal compensation
  • Optimized for ultra-low EMI requirements
    • Spread spectrum reduces peak emissions
    • Pin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pin
    • FSW synchronization with MODE/SYNC pin
  • Designed for automotive applications
    • Junction temperature range: –40°C to +150°C
    • Supports 42-V automotive load dump
    • Supports 3-VIN for automotive cold crank
    • Adjustable up to 95% of VIN, 3.3-V and 5-V fixed VOUT options available
  • Suitable for scalable power supplies
    • Adjustable FSW: 200 kHz - 2.2 MHz with RT pin
    • Pin compatible with:
  • AEC-Q100-qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 89% efficiency at 1 mA, 13.5 VIN, 3.3 fixed VOUT
    • 1.2-µA total non-switching IQ at 13.5 VIN, 3.3 fixed VOUT
  • Miniature solution size and low component cost
    • 2-mm × 2-mm HotRod™ package with wettable flanks
    • Internal compensation
  • Optimized for ultra-low EMI requirements
    • Spread spectrum reduces peak emissions
    • Pin selectable FPWM mode for constant frequency at light loads with MODE/SYNC pin
    • FSW synchronization with MODE/SYNC pin
  • Designed for automotive applications
    • Junction temperature range: –40°C to +150°C
    • Supports 42-V automotive load dump
    • Supports 3-VIN for automotive cold crank
    • Adjustable up to 95% of VIN, 3.3-V and 5-V fixed VOUT options available
  • Suitable for scalable power supplies
    • Adjustable FSW: 200 kHz - 2.2 MHz with RT pin
    • Pin compatible with:

The LMR436x0-Q1 is the industry’s smallest 36-V, 2-A and 1-A synchronous step-down DC/DC converters in 2-mm x 2-mm HotRod™ package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36 V with transients up to 42 V.

The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of 1.5 µA at 13.5 VIN and high light load efficiency. Seamless transition between PWM and PFM modes along with very low MOSFET ON resistances ensures exceptional efficiency across the entire load range.

The control architecture and feature-set are optimized for an ultra-small solution size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by utilizing pseudo-random spread spectrum, a low-EMI HotRod™ package, and an optimized pin-out. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200 kHz and 2.2 MHz to avoid noise sensistive frequency bands.

The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments.

The LMR436x0-Q1 is the industry’s smallest 36-V, 2-A and 1-A synchronous step-down DC/DC converters in 2-mm x 2-mm HotRod™ package. This easy-to-use converter supports a wide input voltage range of 3.0V to 36 V with transients up to 42 V.

The LMR43620-Q1 is specifically designed to meet low standby power requirements for always on, automotive applications. Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of 1.5 µA at 13.5 VIN and high light load efficiency. Seamless transition between PWM and PFM modes along with very low MOSFET ON resistances ensures exceptional efficiency across the entire load range.

The control architecture and feature-set are optimized for an ultra-small solution size. The device uses peak current mode control to minimize output capacitance. The LMR436x0-Q1 minimizes input filter size by utilizing pseudo-random spread spectrum, a low-EMI HotRod™ package, and an optimized pin-out. The MODE/SYNC and RT pin variants can be used to set or synchronize the frequency between 200 kHz and 2.2 MHz to avoid noise sensistive frequency bands.

The rich feature set of the LMR436x0-Q1 is designed to simplify implementation for a wide range of automotive end equipments.

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Type Title Date
* Data sheet LMR436x0-Q1, 36-V, 1-A/2-A Buck Converter with <3 µA IQ at 150°C TJMAX in 4-mm2 HotRod QFN datasheet (Rev. B) 10 Sep 2021
White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. A) 15 Sep 2021
Technical article Lowering audible noise in automotive applications with TI’s DRSS technology 18 Mar 2021
Application note EMI Reduction Technique, Dual Random Spread Spectrum 19 Jun 2020
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

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