Built-in OVP White LED Step-up Converter

文件：827.95 Kbytes 页数：13 Pages

HOLTEK

合泰

Built-in OVP White LED Step-up Converter

The HT7937 is high efficiency boost converter with a constant current output to provide back light functions in handheld devices. Applications with series connected LEDs ensure constant and identical LED currents re- sulting in uniform brightness. A continuous LED output current is setup using the F Integrated open-circuit protection\nOver voltage protection\nUp to 84% efficiency at VIN=3V, 3LEDs, ILED= 20mA\n1.2MHz fixed switching frequency\nLow standby current: 0.1µA (typ.) (VSHDN=0V)\nMatches LED current\nSmall value inductor and capacitors\nSmall outline SOT23-6 package;

Holtek

合泰

Built-in OVP White LED Step-up Converter

文件：1.17704 Mbytes 页数：13 Pages

HOLTEK

合泰

InGaAs PIN PHOTO DIODES

DESCRIPTION PD7XX7 Series are InGaAs pin photodiodes which has a sensitive area of Φ40μm. PD7XX7 is suitable for receving the light having a wavelength band of 1000 to 1600nm. This photodiode features high-speed response and a high quantum efficiency, and is suitable for the light receiving eleme

文件：91.97 Kbytes 页数：3 Pages

MITSUBISHI

三菱电机

12-BIT, 28 MSPS, 170 mW A/D CONVERTER

DESCRIPTION The SPT7937 is a 12-bit monolithic, low-cost, low-power analog-to-digital converter capable of minimum sample rates of 28 MSPS. The SPT7937 has incorporated proprietary parallel SAR circuit design and CMOS processing technologies to achieve its advanced performance. The on-chip track-

文件：177.42 Kbytes 页数：11 Pages

CADEKA