LM25116MH/NOPB Part Information

Details for LM25116MH/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

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.

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Part Features

  • 20-Pin HTSSOP Exposed Pad
  • Automatic Switch to External Bias Supply
  • Drives Standard or Logic Level MOSFETs
  • Emulated Peak Current Mode
  • Free-Run or Synchronous Operation to 1 MHz
  • Low IQ Shutdown (< 10 u00b5A)
  • Optional Diode Emulation Mode
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Line Undervoltage Lockout
  • Programmable Output From 1.215 V to 36 V
  • Programmable Soft Start
  • Robust 3.5-A Peak Gate Drive
  • Thermal Shutdown
  • Wide Operating Range (Up to 42 V)

Part Specifications

Supply Voltage Min 4.75V
Supply Voltage Max 15V
No. of Outputs 1 Output, 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
RoHS Compliant

Alternative Part Descriptions

  • DC-DC Controller Sync Buck 15Vin TSSOP20 | RS Components
  • IC, SYNC BUCK CONTROLLER, HTSSOP-20; Supply Voltage Min:4.75V; Supply Voltage Max:15V; No. of Outputs:1 Output; Duty Cycle (%):98%; Controller IC Case Style:HTSSOP; No. of Pins:20Pins; Switching Frequency:1MHz; Topology:Synchronous RoHS Compliant: Yes | Newark Electronics
  • PMIC; DC/DC converter; Uin: 6÷42V; Uout: 1.215÷36V; HTSSOP20; buck | Transfer Multisort Elektronik
  • 6-42V Wide Vin, Current Mode Synchronous Buck Controller | Texas Instruments
  • Switching Regulator IC [Texas Instruments] LM25116MH/NOPB Switching Regulator IC | Distrelec

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