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TEXAS INSTRUMENTS  LM5117PMH/NOPB  DC/DC Controller, Current Mode, 5.5V to 65V, 1 Output, Synchronous Buck, 530kHz, HTSSOP-20

TEXAS INSTRUMENTS LM5117PMH/NOPB
Technical Data Sheet (10.14KB) EN See all Technical Docs

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Product 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.

Product Information

Supply Voltage Min:
5.5V
Supply Voltage Max:
65V
No. of Outputs:
1 Output
Duty Cycle (%):
98%
Controller IC Case Style:
HTSSOP
No. of Pins:
20Pins
Switching Frequency:
530kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jun-2015)

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Applications

  • Power Management;
  • Automotive;
  • Industrial;
  • Communications & Networking

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
Malaysia

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000897

Associated Products