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LM5117 Datasheet PDF

Part Series:LM5117 Series
Category:DC-DC Converters
Description:Conv DC-DC 5.5V to 65V Step Down Single-Out 0.8V 20A 20Pin HTSSOP EP Tube
Document:LM5117QPMHX/NOPB Datasheet PDF (65 Pages)

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IC REG CTRLR BUCK PWM CM 20TSSOP

LM5117PMH/NOPB - TI Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Frequency
750 kHz
Number of Pins
20 Pin
Supply Voltage (DC)
5.50V (min)
Case/Package
HTSSOP-20
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LM5117PMH/NOPB - TI Function Overview

The LM5117PMH/NOPB 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-by-cycle 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 to 750kHz. The LM5117 drives external high-side and low-side NMOS power switches with adaptive dead-time control. User-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A high voltage bias regulator that allows external bias supply further improves efficiency.
Emulated peak current mode control
Robust 3.3A Peak gate drives
Adaptive dead-time output driver control
Optional diode emulation mode
Programmable output from 0.8V
Precision 1.5% Voltage reference
Analog current monitor
Programmable current limit
Hiccup mode overcurrent protection
Programmable soft-start and tracking
Programmable line undervoltage lockout
Programmable switchover to external bias supply
Thermal shutdown
Green product and no Sb/Br
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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