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EUP2530

Eutech Microelectronics
Part Number EUP2530
Manufacturer Eutech Microelectronics
Description 10 White LED Boost Converter
Published Jul 21, 2014
Detailed Description EUP2530 bkf 10 White LED Boost Converter with PWM Dimming and Single-Wire Series Interface FEATURES 2.6V to 5.5V Input R...
Datasheet PDF File EUP2530 PDF File

EUP2530
EUP2530

Overview
EUP2530 bkf 10 White LED Boost Converter with PWM Dimming and Single-Wire Series Interface FEATURES 2.
6V to 5.
5V Input Range 41V Output Over Voltage Protection Internal Soft-Start Internal Compensation Single-Wire Serial Pulse Interface to Set LED Current with 32-Step Scale External PWM Dimming with 8KHz - 100KHz Frequency Range Internal 45V N-FET 1MHz Fixed Switching Frequency Over Voltage Protection Over Thermal Protection VIN Under Voltage LockOut Available in TSOT23-6 Package RoHS Compliant and 100% Lead (Pb)-Free Halogen-Free APPLICATIONS DESCRIPTION The EUP2530 is a constant current step-up converter specifically designed to drive white LEDs.
With a 45V rated integrated switch FET, the step-up converter supports up to 10 white LEDs in series connection, so the LED currents are identical for uniform brightness.
The boost converter runs at 1.
0MHz fixed switching frequency with 1.
3A switch current limit, and allows for the use of a high brightness LED in general lighting.
The maximum white LED current is set with the external sensor resistor RFB, and the feedback voltage is regulated to 200mV, as shown in the typical application.
During the operation, the LED current can be controlled through the EN pin in two modes.
With a 8KHz or higher frequency PWM dimming signal on EN pin, EUP2530 operates in PWM dimming mode, which the duty cycle determines the feedback reference voltage.
EUP2530 can operate in digital dimming mode also, which a Single Wire interface on the EN pin is integrated to adjust the FB voltage in 32 steps.
In either digital or PWM mode, the EUP2530 does not generate audible noises on the output capacitor.
For the protection, the EUP2530 provides 41V OVP to prevent damage from LED open.
The EUP2530 is available in low profile TSOT23-6 package.
Typical Application Circuit Mobile Phones GPS Navigation Systems Portable Media Players Handheld Devices, Digital Camera Portable Game Machines Figure 1.
DS2530 Ver1.
0 Sep.
2012 White LED Application 1 ...


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