LMZM33603

ACTIVE

4V to 36V, 3A Step-Down DC/DC Power Module in Compact 7x9x4mm QFN Package

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Product details

Parameters

Iout (Max) (A) 3 Vin (Min) (V) 4 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 18 Soft start Fixed Features EMI Tested, Enable, Frequency Synchronization, Power Good Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 8500 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1200 Switching frequency (Min) (kHz) 200 Duty cycle (Max) (%) 90 Topology Buck, Inverting Buck-Boost, Synchronous Buck open-in-new Find other Buck modules (integrated inductor)

Package | Pins | Size

B3QFN (RLR) 18 63 mm² 7 x 9 open-in-new Find other Buck modules (integrated inductor)

Features

  • Complete Integrated Power Solution
    • As Few as 4 External Components
    • Minimum Solution Size < 100 mm2
  • 9 mm × 7 mm × 4 mm QFN Package
    • All Pins Accessible from Package Perimeter
    • Pin Compatible with 2-A LMZM33602
  • Input Voltage Range: 4 V to 36 V
  • Output Voltage Range:
    • 1 V to 13.5 V at 3 A
    • 1 V to 18 V at 2 A
  • Efficiencies Up To 95%
  • Adjustable Switching Frequency
    (200 kHz to 1.2 MHz)
  • Allows Synchronization to an External Clock
  • Power-Good Output
  • Meets EN55011 Class B Radiated EMI Standards
  • Operating IC Junction Range: –40°C to +125°C
  • Operating Ambient Range: –40°C to +105°C
  • Create a Custom Design Using the LMZM33603 With the WEBENCH® Power Designer
open-in-new Find other Buck modules (integrated inductor)

Description

The LMZM33603 power module is an easy-to-use integrated power solution that combines a 3-A, step-down, DC/DC converter with power MOSFETs, a shielded inductor, and passives into a low-profile package. This power solution requires as few as four external components and eliminates the loop compensation and magnetics part selection from the design process.

The 9 mm × 7 mm × 4 mm 18-pin, QFN package is easy to solder onto a printed circuit board and allows a compact, low-profile, point-of-load design. The full feature set, including power good, programmable UVLO, prebias start-up, and overcurrent and over-temperature protection, make the LMZM33603 an excellent device for powering a wide range of applications.

open-in-new Find other Buck modules (integrated inductor)
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Technical documentation

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The LMZM33603 evaluation board is configured to evaluate the operation of the LMZM33603 power module for current up to 3.0A. The input voltage range is 4V to 36V. The output voltage range is 1V to 18V. The evaluation board makes it easy to evaluate the LMZM33603 operation.
Features
  • 4.0V to 36V Input Voltage Range
  • Up to 3.0A of Output Current
  • 1.0V to 18V Output Voltage Range

Design tools & simulation

SIMULATION MODEL Download
SNVMBF4.ZIP (209 KB) - PSpice Model
SIMULATION MODEL Download
SNVMBF5.ZIP (7 KB) - PSpice Model
SIMULATION TOOL 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
  • (...)

Reference designs

REFERENCE DESIGNS Download
Daisy-chained power and data over single pair Ethernet (T1) reference design
TIDA-010076 The TIDA-010076 shows the transfer of 220-W power and 100-Mbit/s data over SPE. Communication systems in daisy-chain topology need significantly less hardware and wiring than conventional systems in star-topology. When combined with single-pair Ethernet (SPE, 100BASE-T1) and power over data line (...)
document-generic Schematic
REFERENCE DESIGNS Download
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
B3QFN (RLR) 18 View options

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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