丝印：DS=**；Package：WQFN-244x4；High Efficiency, Main Power Supply Controller for Notebook Computers

General Description The RT8223A/B dual step-down, switch-mode power supply controller generates logic-supply voltages in battery-powered systems. The RT8223A/B includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. This device also features 2 linea

文件：369.74 Kbytes 页数：26 Pages

RICHTEK

立锜科技

FSK Decoder and DTMF Receiver IC

OVERVIEW The SM8223A is a FSK (Frequency shift keying) decoder and DTMF (Dual tone multi-frequency) receiver IC. It is fabricated using a CMOS process and features a power-down function for low power dissipation operation. The FSK decoder and DTMF receiver have the same performance characteristic

文件：172.67 Kbytes 页数：15 Pages

NPC

MULTISTANDARD VIDEO AND SOUND IF SYSTEM WITH AUDIO AND VIDEO SWITCHES

DESCRIPTION TheSTV8223Bis a pictureand soundIF processor for multistandardapplication with very few external components and adjustments. It provides the audio and video switches for one SCART plug application. ■ VIDEO PLL DEMODULATION ■ SOUND PLL DEMODULATION ■ NEGATIVE MODULATION ■ AGC FOR

文件：112.97 Kbytes 页数：10 Pages

STMICROELECTRONICS

意法半导体

LOW FREQUENCY POWER AMPLIFIER

文件：441.63 Kbytes 页数：11 Pages

TOSHIBA

东芝