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LM25088-Q1

ACTIVE

Automotive Grade 4.5-42V Wide Vin, Current Mode Non-Synchronous Buck Controller

A newer version of this product is available

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Same functionality with different pin-out to the compared device
LM25141-Q1 ACTIVE Automotive 2.2-MHz, low-IQ synchronous buck controller with frequency spread spectrum Improved EMI performance, efficiency and lower IQ.

Product details

Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 1.205 Vout (max) (V) 40 Iout (max) (A) 10 Iq (typ) (mA) 3.2 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Automotive Control mode current mode Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 1.205 Vout (max) (V) 40 Iout (max) (A) 10 Iq (typ) (mA) 3.2 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Frequency synchronization Operating temperature range (°C) -40 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Automotive Control mode current mode Type Controller
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C5
  • Emulated current mode control
  • Drives external high-side N-channel MOSFET
  • Ultra-wide input voltage range from 4.5 V to 42 V
  • Low IQ shutdown and standby modes
  • High duty cycle ratio feature for reduced dropout voltage
  • Spread spectrum EMI reduction (LM25088-1)
  • Hiccup timer for overload protection (LM25088-2)
  • Adjustable output voltage from 1.205 V with 1.5% feedback reference accuracy
  • Wide bandwidth error amplifier
  • Single resistor oscillator frequency setting
  • Oscillator synchronization capability
  • Programmable soft start
  • High voltage, low dropout bias regulator
  • Thermal shutdown protection
  • 16-pin HTSSOP package
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C5
  • Emulated current mode control
  • Drives external high-side N-channel MOSFET
  • Ultra-wide input voltage range from 4.5 V to 42 V
  • Low IQ shutdown and standby modes
  • High duty cycle ratio feature for reduced dropout voltage
  • Spread spectrum EMI reduction (LM25088-1)
  • Hiccup timer for overload protection (LM25088-2)
  • Adjustable output voltage from 1.205 V with 1.5% feedback reference accuracy
  • Wide bandwidth error amplifier
  • Single resistor oscillator frequency setting
  • Oscillator synchronization capability
  • Programmable soft start
  • High voltage, low dropout bias regulator
  • Thermal shutdown protection
  • 16-pin HTSSOP package

The LM25088 high voltage non-synchronous buck controller features all the necessary functions to implement an efficient, high-voltage buck converter using the minimum number of external components. The LM25088 can be configured to operate over an ultra-wide input voltage range of 4.5 V to 42 V. This easy-to-use controller includes a level-shifted gate driver capable of controlling an external N-channel buck switch. The control method is based on peak current mode control utilizing an emulated current ramp. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage and low output voltage applications. The LM25088 switching frequency is programmable from 50 kHz to 1 MHz.

The LM25088 is available in two versions: The LM25088-1 provides a ±5% frequency dithering function to reduce the conducted and radiated EMI while the LM25088-2 provides a versatile restart timer for overload protection. Additional features include a low dropout bias regulator, tri-level enable input to control shutdown and standby modes, soft start, and oscillator synchronization capability. The device is available in a thermally enhanced HTSSOP-16 pin package.

The LM25088 high voltage non-synchronous buck controller features all the necessary functions to implement an efficient, high-voltage buck converter using the minimum number of external components. The LM25088 can be configured to operate over an ultra-wide input voltage range of 4.5 V to 42 V. This easy-to-use controller includes a level-shifted gate driver capable of controlling an external N-channel buck switch. The control method is based on peak current mode control utilizing an emulated current ramp. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage and low output voltage applications. The LM25088 switching frequency is programmable from 50 kHz to 1 MHz.

The LM25088 is available in two versions: The LM25088-1 provides a ±5% frequency dithering function to reduce the conducted and radiated EMI while the LM25088-2 provides a versatile restart timer for overload protection. Additional features include a low dropout bias regulator, tri-level enable input to control shutdown and standby modes, soft start, and oscillator synchronization capability. The device is available in a thermally enhanced HTSSOP-16 pin package.

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Technical documentation

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Type Title Date
* Data sheet LM25088, LM25088-Q1 Wide Input Range Non-Synchronous Buck Controllers datasheet (Rev. K) PDF | HTML 08 Jun 2022
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21 Jul 2016
EVM User's guide AN-1931 LM25088 Evaluation Board (Rev. D) 26 Apr 2013
Application note Improve Power Converter Reliability Using Hiccup-Mode Current Limiting 11 May 2009

Design & development

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

Evaluation board

LM25088MH-1EVAL — LM25088-1 - Wide Vin Non-Synchronous Buck Controller with Dithering Evaluation Module

The LM25088-1 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM25088 controller IC. The LM25088 evaluation board is available in two versions (like the LM25088 controller): the LM25088-1 (...)

User guide: PDF
Not available on TI.com
Evaluation board

LM25088MH-2EVAL — LM25088-2 - Wide Vin Non-Synchronous Buck Controller with Hiccup Mode Restart EVM

The LM25088-2 evaluation board is designed to provide the design engineer with a fully functional power converter based on Emulated Current Mode Control to evaluate the LM5088 controller IC. The LM5088 evaluation board is available in two versions (like the LM25088 controller): the LM25088-1 (...)

User guide: PDF
Not available on TI.com
Simulation model

LM25088 PSpice Average Model

SNVM388.ZIP (49 KB) - PSpice Model
Simulation model

LM25088 TINA-TI LINE TRANSIENT Reference Design

SNVM571.TSC (93 KB) - TINA-TI Reference Design
Simulation model

LM25088 TINA-TI LOAD TRANSIENT Reference Design

SNVM569.TSC (95 KB) - TINA-TI Reference Design
Simulation model

LM25088 TINA-TI STARTUP Reference Design

SNVM567.TSC (121 KB) - TINA-TI Reference Design
Simulation model

LM25088 TINA-TI STEADY STATE Reference Design

SNVM568.TSC (134 KB) - TINA-TI Reference Design
Simulation model

LM25088 TINA-TI Transient Spice Model

SNVM570.ZIP (13 KB) - TINA-TI Spice Model
Simulation model

LM25088 Unencrypted PSpice Average Model

SNVM866.ZIP (1 KB) - PSpice Model
Calculation tool

LM25088-5088QUICK-CALC — LM(2)5088 Quick Start Calculator

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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HTSSOP (PWP) 16 View options

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