IC manufacturers Onsemi

IC manufacturers (95)

Onsemi NCL30100

Fixed Off Time Switched Mode LED Driver Controller

Overview

TopologyBuck Converter
Input voltage85-140 V
Switching frequency700 kHz
Output 13.2 V / 0.7 A
IC revision3

Description

The NCL30100 is a compact switching regulator controller intended for space constrained constant current high−brightness LED driver applications where efficiency and small size are important. The controller is based on a peak current, quasi fixed−off time control architecture optimized for continuous conduction mode step−down (buck) operation. This allows the output filter capacitor to be eliminated. In this configuration, a reverse buck topology is used to control a cost effective N−type MOSFET. Moreover, this controller employs negative current sensing thus minimizing power dissipation in the current sense resistor. The off time is user adjustable through the selection of a small external capacitor, thus allowing the design to be optimized for a given switching frequency range. The control loop isdesigned to operate up to 700 kHz allowing the designer the flexibility to use a very small inductor for space constrained applications.The device has been optimized to provide a flexible inductive step−down converter to drive one or more high power LED(s). The controller can also be used to implement non−isolated buck−boost driver topologies.

Features

  • Quasi−Fixed OFF Time, Peak Current Control Method
  • N−FET Based Controller Architecture
  • Up to 700 kHz Switching Frequency
  • Up to >95% Efficiency
  • No Output Capacitor Needed
  • VCC Operation from 6.35 − 18 V
  • Adjustable Current Limit withNegative Sensing
  • Inherent Open LED Protected
  • Very Low Current Consumption at Startup
  • Undervoltage Lockout
  • Compact Thin TSOP−6 Pb−Free Package
  • −40 to + 125°C Operating Temperature Range
  • This is a Pb−Free Device

Typical applications

  • Landscape Lighting
  • Low Voltage Halogen LED Replacement (MR 16)
  • 12 V LED Bulb Replacement
  • Solar LED Applications
  • Outdoor Area Lighting
  • Transportation Lighting
  • LED Track Lighting
  • LED Light Bars

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(Ω)
fres
(MHz)
SizeVersionIR
(A)
Mount Samples
7445620SPEC
8 files WE-PD4 SMT Power Inductor 100 1.5 0.33 6.5 L 1.4 SMT
7447709102SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

8 files WE-PD SMT Power Inductor 1000 1 1 1.2 1 1210 Standard 0.9 SMT
Order Code Data­sheet Simu­lation
7445620SPEC
7447709102SPEC

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT
(A)
RDC max.
(Ω)
fres
(MHz)
SizeVersionIR
(A)
Mount Samples