ST STLD40DPUR

DC DC 稳压器3V5.5V20mA

Overview

STLD40DPUR is a boost converter that operates from 3.0 V to 5.5 V. It can provide an output voltage as high as 37 V and can drive up to 10 white LEDs in series. The converter is a PFM (pulse frequency modulation) inductor switch that can work in discontinuous (DCM) mode operation. A minimum OFF time of the embedded boost switch TSWis fixed internally and allows limiting the switching frequency. The output current capability is 20 mA with an output voltage of 37 V. The regulation is done by sensing the LED current through the resistor RLED. The device can be turned ON/OFF through the logic enable signal pin EN. By applying a low frequency PWM signal the LEDs can be dimmed. The maximum peak inductor current can be programmed by connected a resistor RSETto the pin RSET.

Features

Tape & Reel (TR) Package
DC DC Regulator Type
Yes Internal Switch(s)
1 Number of Outputs
3V Voltage - Supply (Min)
5.5V Voltage - Supply (Max)
37V Voltage - Output
20mA Current - Output / Channel
PWM Dimming
Backlight Applications
Surface Mount Mounting Type