Startseite Energiemanagement AC/DC- und DC/DC-Controller (externer FET)

LM25088-Q1

AKTIV

Nicht synchroner Abwärtsregler im Strommodus, Automotive Grade, großer Vin-Bereich 4,5–42 V

Eine neuere Version dieses Produkts ist verfügbar

Gleiche Funktionalität, andere Pinbelegung als verglichener Baustein
LM25141-Q1 AKTIV Synchroner 2,2-MHz-Abwärts-Controller mit niedrigem Ruhestrom und Frequenz-Spread-Spektrum für die A Improved EMI performance, efficiency and lower IQ.

Produktdetails

Vin (min) (V) 4.5 Vin (max) (V) 42 Iout (max) (A) 10 Operating temperature range (°C) -40 to 125 Control mode current mode Rating Automotive Vout (min) (V) 1.205 Vout (max) (V) 40 Features Enable, Frequency synchronization Iq (typ) (µA) 3200 Duty cycle (max) (%) 95 Number of phases 1
Vin (min) (V) 4.5 Vin (max) (V) 42 Iout (max) (A) 10 Operating temperature range (°C) -40 to 125 Control mode current mode Rating Automotive Vout (min) (V) 1.205 Vout (max) (V) 40 Features Enable, Frequency synchronization Iq (typ) (µA) 3200 Duty cycle (max) (%) 95 Number of phases 1
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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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM25088, LM25088-Q1 Wide Input Range Non-Synchronous Buck Controllers datasheet (Rev. K) PDF | HTML 08 Jun 2022
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
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 Mai 2009

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM25088MH-1EVAL — LM25088-1 – Nicht-synchroner Abwärtsregler mit großem Vin und Dithering – Evaluierungsmodul

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 (...)

Benutzerhandbuch: PDF
Evaluierungsplatine

LM25088MH-2EVAL — LM25088-2 – Nicht-synchroner Abwärtsregler mit großem Vin und Hiccup-Modus-Neustart – 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 (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM25088 PSpice Average Model

SNVM388.ZIP (49 KB) - PSpice Model
Simulationsmodell

LM25088 TINA-TI LINE TRANSIENT Reference Design

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

LM25088 TINA-TI LOAD TRANSIENT Reference Design

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

LM25088 TINA-TI STARTUP Reference Design

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

LM25088 TINA-TI STEADY STATE Reference Design

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

LM25088 TINA-TI Transient Spice Model

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

LM25088 Unencrypted PSpice Average Model

SNVM866.ZIP (1 KB) - PSpice Model
Berechnungstool

LM25088-5088QUICK-CALC — Lm(2)5088 Schnellstartrechner

Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HTSSOP (PWP) 16 Ultra Librarian

Bestellen & Qualität

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  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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