Product
0
LM5168E
  • LM5168E
  • LM5168E

LM5168E

ACTIVE

6V-to-115V wide VIN, 300mA DC/DC converter with Fly-Buck™ converter capability

Texas Instruments LM5168E Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck, Flybuck

Iout (max) (A)

0.3

Vin (max) (V)

115

Vin (min) (V)

6

Vout (max) (V)

48

Vout (min) (V)

1.2

Switch current limit (typ) (A)

0.3

Features

Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO adjustable

Control mode

Constant on-time (COT)

Operating temperature range (°C)

-55 to 150

Iq (typ) (A)

0.00001

Duty cycle (max) (%)

99

TI functional safety category

Functional Safety-Capable

Package

HSOIC (DDA)-8-29.4 mm² 4.9 x 6

Features

  • Functional Safety-Capable
  • Designed for reliability in rugged applications
    • 6V to 115V wide input voltage range
    • –55°C to +150°C junction temperature range
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • 50ns low minimum on and off times
    • 1MHz adjustable switching frequency
    • Diode emulation for high light-load efficiency
    • 10µA sleep current in auto mode
    • 3µA shutdown quiescent current
    • Pin-to-pin compatible with LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 1.9Ω NFET buck switch
    • Integrated 0.71Ω NFET synchronous rectifier
    • 1.2V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • Package: SOIC PowerPAD™-8 integrated circuit package with 1.27mm pin spacing
  • Functional Safety-Capable
  • Designed for reliability in rugged applications
    • 6V to 115V wide input voltage range
    • –55°C to +150°C junction temperature range
    • Fixed 3ms internal soft-start timer
    • Peak and valley current-limit protection
    • Input UVLO and thermal shutdown protection
  • Designed for scalable industrial power supplies and battery packs
    • 50ns low minimum on and off times
    • 1MHz adjustable switching frequency
    • Diode emulation for high light-load efficiency
    • 10µA sleep current in auto mode
    • 3µA shutdown quiescent current
    • Pin-to-pin compatible with LM5164, LM5163, and LM5013
    • Similar pinout and functionality to LM5017 and LM34927
  • Integration reduces design size and cost
    • COT mode control architecture
    • Integrated 1.9Ω NFET buck switch
    • Integrated 0.71Ω NFET synchronous rectifier
    • 1.2V internal voltage reference
    • No loop compensation components
    • Internal VCC bias regulator and boot diode
    • Open-drain power-good indicator
    • Package: SOIC PowerPAD™-8 integrated circuit package with 1.27mm pin spacing

Description

The LM5168E is an extended temperature range, (–55°C to +150°C) synchronous buck converter designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 50ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48V nominal input to low-voltage rails for reduced system complexity and design cost. The LM5168E operates during input voltage dips as low as 6V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input supply range industrial and high cell count battery pack applications.

With integrated high-side and low-side power MOSFETs, the LM5168E delivers up to 0.3A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM5168E is available in the auto mode version, which enables ultra-low IQ and diode emulation mode operation for high light-load efficiency.

Subscribe to Welllinkchips !
Your Name
* Email
Popular Posts
Featured Parts More >
Submit a request
CONTACT US
Company address

WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK

Send Enquiry
SEND e-MAIL
Office hour from 9am to 6pm ,
Monday through Friday, UTC/GMT +8