IC manufacturers Texas Instruments

IC manufacturers (99)

Texas Instruments LM5145

LM5145 6-V to 75-V Synchronous Buck DC-DC Controller With Wide Duty Cycle Range

Overview

TopologyBuck Converter
Input voltage6-75 V
Switching frequency100-1000 kHz
Output 160 V / 30 A
IC revisionA

Description

The LM5145 75-V synchronous buck controller is designed to regulate from a high input voltage source or from an input rail subject to high voltage transients, minimizing the need for external surge suppression components. A high-side switch minimum on-time of 40 ns facilitates large step-down ratios, enabling the direct step-down conversion from 48 V to low-voltage rails for reduced system complexity and solution cost. The LM5145 continues to operate at nearly 100% duty cycle during input voltage dips as low as 6 V, making it well suited for high-performance industrial control, robotic, datacom and RF power amplifier applications.

Features

Versatile Synchronous Buck DC-DC Controller– Wide Input Voltage Range of 6 V to 75 V– Adjustable Output Voltage From 0.8 V to 60 V

  • Meets EN55022 / CISPR 22 EMI Standards
  • Lossless RDS(on) or Shunt Current Sensing
  • Switching Frequency From 100 kHz to 1 MHz– SYNC In and SYNC Out Capability
  • 40-ns Minimum On-Time for High VIN / VOUT Ratio
  • 140-ns Minimum Off-Time for Low Dropout
  • 0.8-V Reference With ±1% Feedback Accuracy
  • 7.5-V Gate Drivers for Standard VTH MOSFETs– 14-ns Adaptive Dead-Time Control– 2.3-A Source and 3.5-A Sink Capability– Low-Side Soft-Start for Prebiased Start-Up
  • Adjustable Soft-Start or Optional Voltage Tracking
  • Fast Line and Load Transient Response– Voltage-Mode Control With Line Feedforward– High Gain-Bandwidth Error Amplifier
  • Precision Enable Input and Open-Drain PowerGood Indicator for Sequencing and Control
  • Inherent Protection Features for Robust Design– Hiccup Mode Overcurrent Protection– Input UVLO With Hysteresis– VCC and Gate Drive UVLO Protection– Thermal Shutdown Protection With Hysteresis
  • VQFN-20 Package With Wettable Flanks
  • Create a Custom Design Using the LM5145 With

Typical applications

  • Industrial Motor Drives
  • Remote Radio Unit (RRU) and BTS,Networking and Computing Power
  • Non-Isolated PoE and IP Cameras

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
MountISAT,10%
(A)
Samples
885012109011SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 16 V(DC)47 µF ±20% 16 1210 -55 °C up to +85 °C 100.002 GΩ X5R Class II 3.2 2.5 2.5 0.75 7" Tape & Reel
885012108005SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 6.3 V(DC)100 µF ±20% 6.3 1206 -55 °C up to +85 °C 100.001 GΩ X5R Class II 3.2 1.6 1.6 0.5 7" Tape & Reel
74439344010SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-XHMI SMT Power Inductor 6030 -40 °C up to +125 °C 6.65 6.45 3 1 15.75 24.95 5.5 6.05 59 SMT 11
744373965033SPEC

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 1365 -40 °C up to +125 °C 13.65 12.5 6.2 3.3 16.2 41.5 5.7 6.8 20.3 SMT 20.3
744373965047SPEC

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 1365 -40 °C up to +125 °C 13.65 12.5 6.2 4.7 15.1 35.8 6.5 8.4 13.9 SMT 18.4
744373965150SPEC

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 1365 -40 °C up to +125 °C 13.65 12.5 6.2 15 7.7 18.5 24.4 28 7.5 SMT 10.2
Order Code Data­sheet Simu­lation
885012109011SPEC
885012108005SPEC
74439344010SPEC
744373965033SPEC

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.

744373965047SPEC

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.

744373965150SPEC

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 seriesCTol. CVR
(V (DC))
SizeOperating TemperatureDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
PackagingL
(µH)
IRP,40K
(A)
ISAT,30%
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
MountISAT,10%
(A)
Samples