LMQ61460

Name: LMQ61460
Brand: TI
SKU: LMQ61460
Price: 1.61 USD

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Industrial 3-V to 36-V, 6-A, low-noise synchronous step-down converter

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Data sheet

A newer version of this product is available

Same functionality with different pin-out to the compared device.

NEW TPSM63606

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High-density, 36-V input, 1-V to 16-V output, 6-A power module in 5-mm x 5.5-mm enhanced HotRod™ QFN Save board space, simplify design, and speed up time to market with an integrated-inductor power module.

LMQ61460

ACTIVE

Data sheet

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Product details

Vin (Min) (V)

3

Vin (Max) (V)

36

Vout (Min) (V)

1

Vout (Max) (V)

34

Iout (Max) (A)

6

Iq (Typ) (uA)

7

Switching frequency (Min) (kHz)

200

Switching frequency (Max) (kHz)

2200

Features

Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Adjustable, Wettable Flanks Package

Operating temperature range (C)

-40 to 150

Rating

Catalog

Regulated outputs (#)

1

Vin (Min) (V)

3

Vin (Max) (V)

36

Vout (Min) (V)

1

Vout (Max) (V)

34

Iout (Max) (A)

6

Iq (Typ) (uA)

7

Switching frequency (Min) (kHz)

200

Switching frequency (Max) (kHz)

2200

Features

Enable, Forced PWM, Frequency Synchronization, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Adjustable, Wettable Flanks Package

Operating temperature range (C)

-40 to 150

Rating

Catalog

Regulated outputs (#)

1

VQFN-HR (RJR)

14

14 mm² 4 x 3.5

Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra-low EMI requirements
- Hotrod™ package minimizes switch node ringing
- Internal bypass capacitors reduce EMI
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable switch node rise time
Designed for rugged applications
- Supports 42-V transient
- 0.4-V dropout with 4-A load (typical)
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 90% PFM efficiency at 1-mA, 13.5 V_IN, 5 V_OUT
- Low MOSFET ON resistance
  - R_{DS_ON_HS} = 41 mΩ (typical)
  - R_{DS_ON_LS} = 21 mΩ (typical)
External bias option for improved efficiency
Pin compatible with:
- LM61460 (36 V, 6 A)

Functional Safety-Capable
- Documentation available to aid functional safety system design
Optimized for ultra-low EMI requirements
- Hotrod™ package minimizes switch node ringing
- Internal bypass capacitors reduce EMI
- Parallel input path minimizes parasitic inductance
- Spread spectrum reduces peak emissions
- Adjustable switch node rise time
Designed for rugged applications
- Supports 42-V transient
- 0.4-V dropout with 4-A load (typical)
High efficiency power conversion at all loads
- 7-µA no load current at 13.5 V_IN, 3.3 V_OUT
- 90% PFM efficiency at 1-mA, 13.5 V_IN, 5 V_OUT
- Low MOSFET ON resistance
  - R_{DS_ON_HS} = 41 mΩ (typical)
  - R_{DS_ON_LS} = 21 mΩ (typical)
External bias option for improved efficiency
Pin compatible with:
- LM61460 (36 V, 6 A)

The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

The LMQ61460 is a high-performance, DC-DC synchronous buck converter with integrated bypass capacitors. With integrated high-side and low-side MOSFETs, up to 6 A of output current is delivered over a wide input range of 3.0 V to 36 V; tolerant of 42 V, easing input surge protection design. The device implements soft recovery from dropout eliminating overshoot on the output.

The device is specifically designed for minimal EMI. The device incorporates pseudo-random spread spectrum, integrated bypass capacitors, adjustable SW node rise time, low-EMI VQFN-HR package featuring low switch node ringing, and optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

Auto-mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, ensures exceptional efficiency across the entire load range.

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	Type	Title	Date
*	Data sheet	LMQ61460 3-V to 36-V, 6 A, Low EMI Synchronous Step-Down Converter datasheet (Rev. C)	17 Dec 2020
	Technical article	Powering medical imaging applications with DC/DC buck converters	24 Nov 2020
	Functional safety information	LMQ6x4x0-Q1 Functional Safety, FIT Rate, FMD, and Pin FMA (Rev. A)	09 Sep 2020
	Certificate	LMQ61460EVM-400K EU Declaration of Conformity (DoC)	01 Sep 2020
	Technical article	Minimize the impact of the MLCC shortage on your power application	29 Mar 2019

Design & development

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Evaluation board

LMQ61460EVM — 36-V, low-EMI 6-A, 5-V synchronous, 400 kHz, step-down converter evaluation module

The LMQ61460EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMQ61460-Q1 synchronous step-down converter. The LMQ61460-Q1 provides exceptional efficiency, low Iq, and low EMI in small solution size with integrated capacitors.

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