IZ1937 - White LED Step-Up Converter

Datasheet Summary

Description

The IZ1937 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current.

The device can drive two, three or four LEDs in series from a Li-Ion battery.

Features

Internally determined LED current.
High Efficiency: 84% Typical.
Drives Up to 4 LEDs from a 3.2V Supply.
Drives Up to 6 LEDs from a 5V Supply.
36V rugged bipolar switch.
Fast 1.2MHz switching frequency.
Uses tiny 1mm Tall Inductors.
Requires only 0.22uF output capacitor ICs are available for shipment in chip form on unsawn wafers Tab 1. Contact Pad.

Integral

📥 Download Datasheet

Datasheet Details

Part number	IZ1937
Manufacturer	Integral
File Size	127.27 KB
Description	White LED Step-Up Converter
Datasheet	IZ1937 Datasheet
Additional preview pages of the IZ1937 datasheet.

📁 Similar Datasheet

IZ1990 - CMOS IC (IK Semiconductor)
IZ1503 - CMOS LSI LEDs driver (IK Semiconductor)
IZ1517 - Supply Vlotage(V) : 2.0~3.6 (IK Semiconductor)
IZ1621 - RAM Mapping 32x4 LCD Controller (IK Semiconductor)

Other Datasheets by Integral

IZ1990 - CMOS IC FOR ELECTRONIC KEY
IZ1991 - CIRCUIT OF MULTIFUNCTIONAL ELECTRONIC KEY
IZ1325 - High-precision Real Time Clock circuit
IZ1517 - Programmable Mode of LED Control
IZ1583 - step-down regulator
IZ1621 - LCD Driver

Full PDF Text Transcription

Click to expand full text

IZ1937 White LED Step-Up Converter (Functional equvalent of LT1937 Linear Technology Corporation) Description The IZ1937 is a step-up DC/DC converter specifically designed to drive white LEDs with a constant current. The device can drive two, three or four LEDs in series from a Li-Ion battery. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The IZ1937 operates at 1.2MHz, allowing the use of tiny external components. The output capacitor can be as small as 0.22uF, saving space and cost versus alternative solutions. A low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency.

Published: Jan 2, 2016 |