SIMPLE SWITCHER®, 36V 3A Synchronous Step-Down Converter
Product details
Parameters
Package | Pins | Size
Features
- 4-V to 36-V Input range
- 3-A Continuous output current
- Integrated synchronous rectification
- Current-mode control
- Minimum switch on-time: 60 ns
- Internal compensation for ease of use
- 400-kHz Switching frequency and adjustable frequency options
- PFM and forced PWM mode options
- Frequency synchronization to external clock
- 75-µA Quiescent current at no load for PFM option
- Soft start into a prebiased load
- High duty-cycle operation supported
- Precision enable input
- Output short-circuit protection with hiccup mode
- Thermal protection
- 8-Pin HSOIC with PowerPAD™ package
- 12-Pin WSON wettable flanks package with PowerPAD™
- Use the LMZM33603 module for faster time to market
- Create a custom design using the LMR23625 with the WEBENCH Power Designer
Description
The LMR23630 SIMPLE SWITCHER is an easy-to-use 36 V, 3 A synchronous step-down regulator. With a wide input range from 4 V to 36 V, it is suitable for various industrial applications for power conditioning from unregulated sources. Peak-current-mode control is employed to achieve simple control-loop compensation and cycle-by-cycle current limiting. A quiescent current of 75 µA makes the device suitable for battery-powered systems. An ultra-low 2 µA shutdown current can further prolong battery life. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This also minimizes the external components. The device has an option for constant frequency FPWM mode to achieve small output-voltage ripple at light load. An extended family (HSOIC) is available in 1-A (LMR23610) and 2.5-A (LMR23625) load-current options in a pin-to-pin compatible package allowing simple, optimum PCB layout. A precision enable input allows simplification of regulator control and system power sequencing. Protection features include cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown due to excessive power dissipation.
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Technical documentation
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View all 6 | Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | LMR23630 SIMPLE SWITCHER® 36-V, 3-A Synchronous Step-Down Converter datasheet (Rev. E) | Aug. 11, 2020 |
| Selection guide | Buck Converter Quick Reference Guide (Rev. B) | Apr. 08, 2021 | |
| Technical article | Minimize the impact of the MLCC shortage on your power application | Mar. 29, 2019 | |
| Technical article | A review of EMI standards, part 1 – conducted emissions | Jun. 28, 2018 | |
| User guide | LMR23630DRREVM User’s Guide | May 25, 2017 | |
| User guide | LMR23630A EVM User's Guide (Rev. A) | Jul. 06, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LMR23630AEVM is a fully assembled and tested circuit for evaluating the LMR23630ADDAR Step-Down Converter. The LMR23630AEVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 3A. The board has jumper connectors to select output options, enable or disable the converter (...)
Features
- 4V to 36V Input Voltage Range
- Jumper Selectable Output Options (5V or 3.3V)
- Up to 3A Output Current
- Switching Frequency 400KHz
- Frequency Synchronization to External Clock
- Hiccup Mode Short Circuit Protection
Description
The LMR23630EVM is a fully assembled and tested circuit for evaluating the LMR23630DRR step-down converter. The LMR23630EVM operates from 4V to 36V input (12V nominal) and provides a 5.0V/3.3V output at 3A. The board has jumper connectors to select output options, enable or disable the (...)
Features
- 4V to 36V Input Voltage Range
- Jumper Selectable Output Options (5V or 3.3V)
- Up to 3A Output Current
- Adjustable Switching Frequency
- Frequency Synchronization to External Clock
Design tools & simulation
SNVMAT8.ZIP (7 KB) - PSpice Model
SNVMAT9.ZIP (899 KB) - PSpice Model
SNVMAU0.ZIP (912 KB) - PSpice Model
SNVMAU1.ZIP (7 KB) - PSpice Model
SNVMBC1.ZIP (7 KB) - PSpice Model
SNVMBC2.ZIP (223 KB) - PSpice Model
SNVMBC3.ZIP (220 KB) - PSpice Model
SNVMBC4.ZIP (7 KB) - PSpice Model
SNVMBC5.ZIP (224 KB) - PSpice Model
SNVMBC6.ZIP (7 KB) - PSpice Model
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
PMP15016 — The PMP15016 reference design is a 5V/3A output power supply using the LMR23630 DC/DC buck regulator IC. This design uses a 4-layer board and is intended for industrial applications with a 24V input bus. LMR23630 is a 4.0V to 36V input, 3A output capable, and 400 kHz fixed synchronous buck (...)
Design files
-
download PMP15016 BOM (LMR23630).pdf (98KB) -
download PMP15016 Assembly Drawing .pdf (763KB) -
download PMP15016 PCB .pdf (5463KB) -
download PMP15016 CAD Files.zip (18KB) -
download PMP15016 Gerber (LMR23630).zip (160KB)
PMP11668 — The PMP11668 reference design is a single channel USB charger for automotive application. It includes a buck converter followed by a USB charging port controller. Its built-in short-to-battery protection, IEC ESD protection features enhance the system's reliability significantly in automotive (...)
Design files
-
download PMP11668 BOM.pdf (81KB) -
download PMP11668 Assembly Drawing.pdf (81KB) -
download PMP11668 PCB.pdf (664KB) -
download PMP11668 CAD Files.zip (28KB) -
download PMP11668 Gerber.zip (485KB)
PMP10745 — The PMP10745 is a dual output DC/DC Buck converter power supply reference design for USB charging applications. It takes a 7V to 36V input voltage, and generates two 5V at 3A outputs with 96% peak efficiency. The reference design features two LMR23630 buck converters to provide two very stable and (...)
Design files
-
download PMP10745 BOM.pdf (117KB) -
download PMP10745 Gerber.zip (340KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SO PowerPAD (DDA) | 8 | View options |
| WSON (DRR) | 12 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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