LM5116MH

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> Semiconductors - ICs

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Series Information for LM5116MH - Texas Instruments

Features

  • feature
    Automatic Switch to External Bias Supply
  • feature
    Create a Custom Design Using the LM5116 with
  • feature
    Drives Standard or Logic Level MOSFETs
  • feature
    Emulated Peak Current Mode
  • feature
    Free-run or Synchronous Operation to 1 MHz
  • feature
    HTSSOP-20 Exposed Pad
  • feature
    Low IQ Shutdown (< 10 u00b5A)
  • feature
    Optional Diode Emulation Mode
  • feature
    Precision 1.5% Voltage Reference
  • feature
    Programmable Current Limit
  • feature
    Programmable Line Undervoltage Lockout
  • feature
    Programmable Output from 1.215 V to 80 V
  • feature
    Programmable Soft-Start
  • feature
    Robust 3.5-A Peak Gate Drive
  • feature
    Thermal Shutdown
  • feature
    Wide Operating Range Up to 100 V

Description

IC SYNC CONTROL BUCK 1MHZ HTSSOP-20
The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high-voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle-bycycle current limiting, and ease-of-loop compensation. 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 applications. The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation, for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current. Additional features include a high-voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle-by-cycle current limit, and adjustable line undervoltage lockout. The device is available in a power enhanced HTSSOP-20 package featuring an exposed die attach pad to aid thermal dissipation.

Specifications

Supply Voltage Min:
4.75V
Supply Voltage Max:
15V
No. of Outputs:
1Outputs
Duty Cycle (%):
98%
Controller IC Case Style:
TSSOP
No. of Pins:
20Pins
Switching Frequency:
1MHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
-
SVHC:
No SVHC (27-Jun-2018)
Operating Temperature Range:
-40°C to +150°C
Primary Input Voltage:
100V

Alternate Descriptions

Avnet America

DC DC Cntrlr Single-OUT Sync Buck 6V to 100V Input 20-Pin TSSOP EP Rail

Avnet America product

Avnet Europe

DC DC Cntrlr Single-OUT Sync Buck 6V to 100V Input 20-Pin TSSOP EP Rail

Avnet Europe product