3.5V to 36V, 6A Synchronous Step-Down Voltage Converter
Product details
Parameters
Package | Pins | Size
Features
- New product available: LM61460 60-V, 6-A synchronous converter
- Synchronous rectification
- Wettable flanks QFN package (WQFN)
- Low quiescent current
- 0.8 µA in shutdown (typical)
- 15 µA in active mode with no load (typical)
- Wide voltage conversion range:
- tON-MIN = 60 ns (typical)
- tOFF-MIN = 70 ns (typical)
- Low MOSFET ON-resistance:
- RDS_ON_HS = 53 mΩ (typical)
- RDS_ON_LS = 31 mΩ (typical)
- External bias input to improve efficiency
- Pin-selectable auto mode or forced PWM operation
- Adjustable frequency range: 350 kHz to 2.2 MHz
- Synchronizable to external clock
- Internal compensation
- Power-good flag
- Precision enable to program system UVLO
- Flexible soft-start features:
- Start-up into pre-biased load
- Fixed or adjustable soft-start time
- Output voltage tracking
- Cycle-by-cycle current limiting
- Short-circuit protection with hiccup mode
- Create a custom design with the WEBENCH® power designer using LM73605 or LM73606
All trademarks are the property of their respective owners.
Description
The LM73605 and LM73606 family of devices are easy-to-use synchronous step-down DC/DC converters capable of driving up to 5 A or 6 A of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605 and LM73606 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency over the entire load range. Protection features include thermal shutdown, cycle-by-cycle current limiting, and short-circuit protection. The devices are pin-to-pin compatible for easy current scaling. The new product, LM61460-Q1, offers higher efficiency, lower stand-by quiescent current, and improved EMI performance. See the device comparison table to compare specifications. Start a Webench design with LM61460-Q1. Use the LMZM33606 module for faster time to market.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM73605/LM73606 3.5-V to 36-V, 5-A or 6-A Synchronous Step-Down Voltage Converter datasheet (Rev. A) | Jul. 21, 2017 |
Selection guide | Buck Converter Quick Reference Guide (Rev. A) | Mar. 31, 2020 | |
User guide | Automotive Wide-VIN to Point-of-Load Power Supply Reference Design (Rev. A) | Mar. 26, 2020 | |
Technical articles | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
White paper | Power modules for lab instrumentation | Oct. 18, 2018 | |
User guide | LM73605/LM73606 EVM User's Guide | Sep. 20, 2017 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM73606EVM-5V-400K evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LM73606 synchronous step-down voltage converter. The EVM operates from 6V to 36V input and provides a 5V output voltage with 6A maximum load current.
Features
- High Efficiency at light loads and heavy loads
- Synchronous Rectification
- Wide-Input Voltage Range
- Auto mode or FPWM mode
- Frequency Synchronization
- Low Quiescent Current
Design tools & simulation
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
Design files
-
download PMP15023 Assembly Drawing.pdf (152KB) -
download PMP15023 BOM (Rev. A).pdf (103KB) -
download PMP15023 CAD Files (Rev. A).zip (204KB) -
download PMP15023 Gerber (Rev. A).zip (525KB) -
download PMP15023 PCB (Rev. A).pdf (905KB)
Design files
-
download TIDA-010011 BOM.pdf (134KB) -
download TIDA-010011 Assembly Drawing.pdf (1564KB) -
download TIDA-010011 PCB.pdf (4603KB) -
download TIDA-010011 CAD Files.zip (7015KB) -
download TIDA-010011 Gerber.zip (799KB)
Design files
-
download PMP40286 BOM.pdf (163KB) -
download PMP40286 Assembly Drawing.pdf (129KB) -
download PMP40286 PCB.pdf (790KB) -
download PMP40286 CAD Files.zip (26KB) -
download PMP40286 Gerber.zip (496KB)
Design files
-
download PMP40285 BOM.pdf (163KB) -
download PMP40285 Assembly Drawing.pdf (162KB) -
download PMP40285 PCB.pdf (818KB) -
download PMP40285 CAD Files.zip (26KB) -
download PMP40285 Gerber.zip (459KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WQFN (RNP) | 30 | View options |
Ordering & quality
- RoHS
- 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.
Support & training
TI E2E™ forums with technical support from TI engineers
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.