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Details for LM25116MH/NOPB by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
IC SYNC BUCK CONTROLLER HTSSOP-20
LM25116MH/NOPB image

LM25116MH/NOPB by Texas Instruments

IC SYNC BUCK CONTROLLER HTSSOP-20
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 Information
LM25116MH/NOPB image
RoHS Compliant
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.
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
Alternate Descriptions
DC-DC Controller Sync Buck 15Vin TSSOP20 RS Components
SYNCHRONOUS 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:TSSOP; No. of Pins:20Pins; Switching Frequency:1MHz; Product Range:- RoHS Compliant: Yes Newark Electronics
DC DC Cntrlr Single-OUT Sync Buck 4.75V to 15V Input 20-Pin TSSOP EP Rail Avnet America
DC DC Cntrlr Single-OUT Sync Buck 4.75V to 15V Input 20-Pin TSSOP EP Rail Avnet Europe