PWM 控制 DC-DC 升压控制器

HF3121系列是一款固定频率、高效率的升压DC/DC控制器，主要用于OLED驱动。该产品的输出电压最高可以达到22V，锂电池供电时可以输出12V电压驱动OLED。电路内部集成了一个内阻2欧姆的大管子，耐压可支持22V，采用SOT23-5L小型封装，节省了PCB空间及BOM成本。 • 输入电压2.7V-5.5V\n• 振荡频率1.0MHz±20%\n• 工作控制模式PWM控制的电流模工作模式\n• 负载电容：10μF，陶瓷电容\n• LX端电流限制600mA;

Ground isolation amplifier

The BA3121,BA3121F and BA3121N are ground isolation amplifiers developed for use in car audio applications. These ICs efficiently eliminate problems caused by wiring resistance, and remove noise generated by the electrical devices used in automobiles. The capacitance values of the external capacit

OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE

DESCRIPTION Dedicated to the protection of sensitive telecom equipment, the LCP3121 provides protection which can be programmed by both voltage and current. The breakdown voltage can be easily programmed by using an external zener diode. The protection function programmed by the current is achi

PROGRAMMABLE TRANSIENT VOLTAGE SUPPRESSOR FOR SLIC PROTECTION

DESCRIPTION This device has been especially designed to protect a subscriber line interface circuit (SLIC) with an integrated ring generator. Used with the recommended application circuit, each line (TIP and RING) is protected against positive and negative surges. In the positive polarity, the b

OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE

DESCRIPTION Dedicated to the protection of sensitive telecom equipment, the LCP3121 provides protection which can be programmed by both voltage and current. The breakdown voltage can be easily programmed by using an external zener diode. The protection function programmed by the current is achi

OVERVOLTAGE AND OVERCURRENT PROTECTION FOR TELECOM LINE

DESCRIPTION Dedicated to the protection of sensitive telecom equipment, the LCP3121 provides protection which can be programmed by both voltage and current. The breakdown voltage can be easily programmed by using an external zener diode. The protection function programmed by the current is achi