Product details

Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Min) (V) 4 Vout (Max) (V) 28 Switch current limit (Typ) (A) 1.25 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 1150 Switching frequency (Max) (kHz) 1900 Iq (Typ) (mA) 2.1 Features Enable, Light Load Efficiency Duty cycle (Max) (%) 88 Operating temperature range (C) -40 to 125 Rating Catalog
Vin (Min) (V) 2.7 Vin (Max) (V) 14 Vout (Min) (V) 4 Vout (Max) (V) 28 Switch current limit (Typ) (A) 1.25 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 1150 Switching frequency (Max) (kHz) 1900 Iq (Typ) (mA) 2.1 Features Enable, Light Load Efficiency Duty cycle (Max) (%) 88 Operating temperature range (C) -40 to 125 Rating Catalog
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • LM27313-Q1 is an Automotive-Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C
    to +125°C Operating Junction Temperature)
  • 30-V DMOS FET Switch
  • 1.6-MHz Switching Frequency
  • Low RDS(ON) DMOS FET
  • Switch Current up to 800 mA
  • Wide Input Voltage Range (2.7 V to 14 V)
  • Low Shutdown Current (< 1 µA)
  • 5-Lead SOT-23 Package
  • Uses Tiny Capacitors and Inductors
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • LM27313-Q1 is an Automotive-Grade Product
    that is AEC-Q100 Grade 1 Qualified (–40°C
    to +125°C Operating Junction Temperature)
  • 30-V DMOS FET Switch
  • 1.6-MHz Switching Frequency
  • Low RDS(ON) DMOS FET
  • Switch Current up to 800 mA
  • Wide Input Voltage Range (2.7 V to 14 V)
  • Low Shutdown Current (< 1 µA)
  • 5-Lead SOT-23 Package
  • Uses Tiny Capacitors and Inductors
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated

The LM27313/-Q1 switching regulator is a current-mode boost converter with a fixed operating frequency of 1.6 MHz.

The use of the SOT-23 package, made possible by the minimal losses of the 800-mA switch, and the small inductors and capacitors result in extremely high power density. The 30-V internal switch makes these solutions perfect for boosting to voltages of 5 V to 28 V.

This device has a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

The LM27313/-Q1 switching regulator is a current-mode boost converter with a fixed operating frequency of 1.6 MHz.

The use of the SOT-23 package, made possible by the minimal losses of the 800-mA switch, and the small inductors and capacitors result in extremely high power density. The 30-V internal switch makes these solutions perfect for boosting to voltages of 5 V to 28 V.

This device has a logic-level shutdown pin that can be used to reduce quiescent current and extend battery life.

Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.

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Technical documentation

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Type Title Date
* Data sheet LM27313/-Q1 1.6-MHz Boost Converter With 30-V Internal FET Switch in SOT-23 datasheet (Rev. E) 23 Oct 2014
Application note Extend the Output Voltage Range With a Coupling Inductor 20 Sep 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Design of UVLO for LM27313 (Rev. B) 08 Apr 2014

Design & development

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Simulation model

LM27313 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM670A.ZIP (104 KB) - PSpice Model
Simulation model

LM27313 Unencrypted PSpice Transient Model

SNVM881.ZIP (2 KB) - PSpice Model
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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SOT-23 (DBV) 5 View options

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