LM25116MH/NOPB

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Details for Texas Instruments

LM25116MH/NOPB

6-42V Wide Vin, Current Mode Synchronous Buck Controller
Buy Directly from Texas Instruments (7884 in Stock)
$2.0400 per unit
Series Information for LM25116MH/NOPB - Texas Instruments

Features

  • feature
    20-Pin HTSSOP Exposed Pad
  • feature
    Automatic Switch to External Bias Supply
  • feature
    Drives Standard or Logic Level MOSFETs
  • feature
    Emulated Peak Current Mode
  • feature
    Free-Run or Synchronous Operation to 1 MHz
  • 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 36 V
  • feature
    Programmable Soft Start
  • feature
    Robust 3.5-A Peak Gate Drive
  • feature
    Thermal Shutdown
  • feature
    Wide Operating Range (Up to 42 V)

Description

IC SYNC BUCK CONTROLLER HTSSOP-20
The LM25116 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 using an emulated current ramp. Current mode control provides inherent line feedforward, 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 LM25116 drives external high-side and low-side NMOS power switches with adaptive deadtime 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 20-pin HTSSOP 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:
HTSSOP
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:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Accuracy %:
1.5%
Base Number:
25116
Operating Temperature Range:
-40°C to +125°C
Output Current:
20A
Output Voltage:
80V
Output Voltage Adjustable Range:
1.215V to 36V
Primary Input Voltage:
42V
Termination Type:
Surface Mount Device
Voltage Regulator Type:
Buck

Alternate Descriptions

Avnet America

DC DC Cntrlr Single-OUT Sync Buck 4.75V to 15V Input 20-Pin TSSOP EP Rail

Avnet America product

Avnet Europe

DC DC Cntrlr Single-OUT Sync Buck 4.75V to 15V Input 20-Pin TSSOP EP Rail

Avnet Europe product

Texas Instruments

6-42V Wide Vin, Current Mode Synchronous Buck Controller

Texas Instruments product