Topology | Buck Converter |
Input voltage | 85-140 V |
Switching frequency | 700 kHz |
Output 1 | 3.2 V / 0.7 A |
IC revision | 3 |
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.
Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | Size | Version | Samples | |
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![]() | 7445620 | SPEC | – | 8 files | WE-PD4 SMT Power Inductor | 100 | 1.4 | 1.5 | 0.33 | 6.5 | SMT | L | – | |
![]() | 7447709102 | SPEC | 8 files | WE-PD SMT Power Inductor | 1000 | 0.9 | 1 | 1.2 | – | – | 1210 | Standard |
Order Code | Datasheet | Simulation | |
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![]() | 7445620 | SPEC | – |
![]() | 7447709102 | SPEC |
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Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IR (A) | ISAT (A) | RDC max. (Ω) | fres (MHz) | Mount | Size | Version | Samples |
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