LMZ31707

ACTIVE

2.95V to 17V, 7A Step-Down Power Module with Current Sharing in 10x10x4.3mm QFN Package

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Product details

Parameters

Iout (Max) (A) 7 Vin (Min) (V) 2.95 Vin (Max) (V) 17 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Soft start Adjustable Features Current Sharing, EMI Tested, Frequency Synchronization, Power Good, Remote Sense, Tracking, Light Load Efficiency Operating temperature range (C) -40 to 85 Iq (Typ) (mA) 0.8 Iq (Typ) (uA) 800 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1200 Switching frequency (Min) (kHz) 200 Switching frequency (Typ) (kHz) 1000 Duty cycle (Max) (%) 100 Topology Buck, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B3QFN (RVQ) 42 100 mm² 10 x 10 open-in-new Find other Buck modules (integrated inductor)

Features

  • Complete integrated power solution allows
    small footprint, low-profile design
  • 10-mm × 10-mm × 4.3-mm package
    • Pin compatible with LMZ31710 and LMZ31704
  • Efficiencies up to 95%
  • Eco-mode™ / light load efficiency (LLE)
  • Wide-output voltage adjust
    0.6 V to 5.5 V, with 1% reference accuracy
  • Supports parallel operation for higher current
  • Optional split power rail allows
    input voltage down to 2.95 V
  • Adjustable switching frequency
    (200 kHz to 1.2 MHz)
  • Synchronizes to an external clock
  • Provides 180° out-of-phase clock signal
  • Adjustable slow start
  • Output voltage sequencing / tracking
  • Power good output
  • Programmable undervoltage lockout (UVLO)
  • Overcurrent and overtemperature protection
  • Pre-Bias output start-up
  • Operating temperature range: –40°C to +85°C
  • Enhanced thermal performance: 13.3°C/W
  • Meets EN55022 Class B emissions
    • Integrated shielded inductor
  • Create a custom design using the LMZ31707 with the WEBENCH® Power Designer

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Description

The LMZ31707 SIMPLE SWITCHER® power module is an easy-to-use integrated power solution that combines a 7-A DC-DC converter with power MOSFETs, a shielded inductor, and passives into a low profile, QFN package. This total power solution allows as few as three external components and eliminates the loop compensation and magnetics part selection process.

The 10-mm × 10-mm × 4.3-mm QFN package is easy to solder onto a printed circuit board and allows a compact point-of-load design. Achieves greater than 95% efficiency and excellent power dissipation capability with a thermal impedance of 13.3°C/W. The LMZ31707 offers the flexibility and the feature-set of a discrete point-of-load design and is ideal for powering a wide range of ICs and systems. Advanced packaging technology affords a robust and reliable power solution compatible with standard QFN mounting and testing techniques.

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Technical documentation

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Type Title Date
* Datasheet LMZ31707 7-A Power Module with 2.95-V to 17-V Input and Current Sharing in QFN Package datasheet (Rev. E) Feb. 25, 2020
Application notes Soldering Requirements for BQFN Packages (Rev. C) Mar. 05, 2020
Application notes Practical Thermal Design With DC/DC Power Modules (Rev. A) Nov. 20, 2019
Application notes Soldering Considerations for Power Modules Nov. 26, 2018
Selection guides Innovative DC/DC Power Modules Selection Guide (Rev. C) Feb. 27, 2018
White papers Simplify low EMI design with power modules Nov. 20, 2017
Application notes Working With QFN Power Modules (Rev. A) Jun. 08, 2017
Application notes Power Module MSL Ratings Jan. 20, 2017
Application notes Using LMZ31710 for Higher Output Voltages Nov. 09, 2015
Application notes Adjusting LMZ3 Output Voltage with LM10010/1 Feb. 11, 2014
User guides LMZ31710 Parallel User's Guide Jan. 24, 2014
Application notes LMZ31710, LMZ31707, LMZ31704 Parallel Jul. 02, 2013
Application notes Powering LMZ3 SIMPLE SWITCHER Power Modules From 3.3 V Jul. 02, 2013
User guides LMZ31710, LMZ31707 and LMZ31704 EVM User's Guide (Rev. A) Jun. 13, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
The Texas Instruments LMZ31707EVM-002 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMZ31707 7A Power Module. The EVM operates with an input voltage range of 2.95V to 17V. The output voltage can be selected from four preset values using a jumper (0.6V, 0.9V (...)
Features
  • Jumper selectable output voltage
  • Adjustable Soft Start
  • Adjustable turn-on UVLO
  • Component footprints for user defined programming parts

Design tools & simulation

SIMULATION MODELS Download
SLVM962.ZIP (29 KB) - PSpice Model
SIMULATION MODELS Download
SLVMA16.ZIP (136 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAQ8.ZIP (7 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
B3QFN (RVQ) 42 View options

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