AP2004中文资料PWM BUCK CONTROLLER数据手册Diodes规格书

描述 Description

The AP2004 integrates Pulse-Width-Modulation (PWM) control circuit into a single chip, mainly designs for power-supply regulator. All the functions include an on-chip 1.25V reference output, an error amplifier, an adjustable oscillator, a soft-start, UVLO, SCP circuitry, and a push-pull output circuit. Switching frequency is adjustable by trimming CT. During low VCC situation, the UVLO makes sure that the outputs are off until the internal circuit operates normally.

特性 Features

PWM Buck Control Circuitry
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\t\tOperating voltage can be up to 27V
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\t\tUnder voltage Lockout (UVLO) Protection
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\t\tShort Circuit Protection (SCP)
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\t\tSoft-start circuit
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\t\tVariable Oscillator Frequency -- 300Khz Max
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\t\t1.25V voltage reference Output
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\t\t8-pin SOP package
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\t\tSO-8: Available in “Green” Molding Compound (No Br, Sb)
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\t\tLead Free Finish/ RoHS Compliant

应用 Application

• Backlight inverter
• LCD Monitor
• CDROM, XDSL Product
• DC/DC converters in computers, etc.

简介

AP2004属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由Diodes制造生产的AP2004DC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。