IC manufacturers Texas Instruments

IC manufacturers (99)

Texas Instruments LM5143-Q1

3.5-V to 65-V low Iq, dual, 2-phase synchronous buck DC-DC controller

Overview

TopologyBuck Converter
Input voltage5-36 V
Output 15 V / 15 A
IC revisionB

Description

The LM5143-Q1 is a 65-V synchronous buck DC/DC controller for high-current single or dual outputs. The device uses an interleaved, stackable, current-mode control architecture for easy loop compensation, fast transient response, excellent load and line regulation, and accurate current sharing with paralleled phases for higher output current. A high-side switch minimum on-time of 65 ns gives large step-down ratios, enabling the direct conversion from 12-V, 24-V, or 48-V automotive inputs to low-voltage rails for reduced system complexity and solution cost. The LM5143-Q1 continues to operate during input voltage dips as low as 3.5 V, at nearly 100% duty cycle if needed.

Features

  • AEC-Q100 qualified for automotive applications:
  • – Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Versatile synchronous buck DC/DC controller
  • – Wide input voltage range of 3.5 V to 65 V
  • – 1% accurate, fixed 3.3-V, 5-V or adjustableoutputs from 0.6 V to 55 V
  • – 150°C maximum junction temperature
  • – Shutdown mode current: 4 µA typical
  • – No-load standby current: 15 µA typical
  • Two interleaved synchronous buck channels
  • – Dual-channel or single-output multiphase
  • – 65-ns tON(min) for high VIN/VOUT ratio
  • – 60-ns tOFF(min) for low dropout
  • Switching frequency from 100 kHz to 2.2 MHz
  • – SYNC in and SYNC out capability
  • Inherent protection features for robust design
  • – Hiccup-mode overcurrent protection
  • – Independent ENABLE and PGOOD functions
  • – VCC, VDDA, and gate-drive UVLO protection
  • – Thermal shutdown protection with hysteresis
  • Optimized for ultra-low EMI requirements
  • – Slew-rate controlled adaptive gate drivers
  • – Spread spectrum reduces peak emissions
  • – Meets CISPR 25 Class 5 standard
  • VQFNP-40 package with wettable flank pins
  • Create a custom design using the LM5143-Q1 with WEBENCH® Power Designer

Typical applications

  • Automotive electronic systems
  • High-voltage battery-operated systems
  • Infotainment systems, instrument clusters, ADAS

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
Mount Samples
744311068SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 0.68 20.9 9.5 20 3.1 105 Superflux 3.41 SMT
744373460068SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-LHMI SMT Power Inductor 0.68 15.1 15.9 31.6 72 5.5 SMT
Order Code Data­sheet Simu­lation
744311068SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

744373460068SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
Mount Samples