适配器

QX1502是一款高精度隔离型反激式AC-DC 控制器，适用于小功率的充电器和适配器等。其工作在原边反馈模式，无需光耦和 TL431。通过不同的应用电路可使其工作在恒流或者恒压模式。在恒流模式下，输出电流可通过设置CS 引脚对地的电阻来调节；在恒压模式下，可通过设置变压器辅助绕组输出分压电阻来设定输出电压；另外芯片内部设置了输出电压线损补偿电路，可通过调节分压电阻的阻值来得到合适的线损补偿。\r\n QX1502提供了软启动和各种保护机制，包括功率管限流模式，电源电压过压保护，电源电压欠压保护，以及电源钳位电路等。 通过设置合适的参数，系统可以得到高精度的输出恒压以及恒流控制。 ·恒压输出控制：±5%精度 \r\n·高精度恒流输出控制 \r\n·原边反馈控制，无需光耦和 TL431 \r\n·可调输出电压 \r\n·输出电流的负载调整率可调 \r\n·内建软启动功能 \r\n·可调线损补偿 \r\n·内建限流输出控制 \r\n·内建欠压保护和过压钳位功能 \r\n·内建过压保护模块;

HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Amperes)

VOLTAGE - 50 to 800 Volts CURRENT - 10 to 35 Amperes FEATURES ● Electrically Isolated Metal Case for Maximum Heat Dissipation ● Surge Overload Ratings to 400 Amperes ● These bridges are on the U/L Recognized Products List for currents of 10, 25 and 35 amperes MECHANICAL DATA

HIGH CURRENT SILICON BRIDGE RECTIFIERS(VOLTAGE - 50 to 1000 Volts CURRENT - 15 Amperes)

VOLTAGE - 50 to 1000 Volts CURRENT - 15 Amperes FEATURES • Metal Case for Maximum Heat Dissipation. • Surge Overload Ratings to 400 Amperes. • These bridges are on the U/L Recognized Products List for currents of 15 amperes.

HIGH CURRENT SILICON BRIDGE RECTIFIER(VOLTAGE - 50 to 800 Volts CURRENT - 15 Amperes)

FEATURES • Plastic material has Underwriters Laboratory Flammability Classification 94V-O • The plastic package has Underwriters Laboratory Flammability Classification 94V-O. • Surge overload ratings to 300 Amperes .

1.575 GHz GPS DOWNCONVERTER

This integrated circuit is intended for GPS receiver applications. The dual conversion design is implemented in Motorola’s low–cost high performance MOSAIC 3 silicon bipolar process and is packaged in a low–cost surface mount TQFP–48 package. In addition to the mixers, a VCO, a PLL and a loop filt

1.7 GHz/ 2.0 GHz LOW-POWER TWO-MODULUS PRESCALER DIVIDED-BY-64/65, 128/129

DESCRIPTION µPB1502GR and µPB1502GR(1) are two-modulus prescaler divided by 64/65 or 128/129. This device is designed for mobile communication applications for example 0.8-1.9 GHz cellular and cordless telephones. The ICs operate on low power and therefore are suitable for hand-held, battery-oper