HX7009数据手册HXSEMI中文资料规格书

描述 Description

The HX7009 is a complete, cost effective, highly-efficient power management solution that is ideal for a wide range of portable handheld equipment. This device integrates two PWM step-down DC/DC converters, four low-noise low-dropout linear regulators (LDOs) and one battery charger in a single, thin, space-saving package. This device is ideal for a wide range of portable handheld equipment that can benefit from the advantages of technology but does not require a high level of integration.\r
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VBAT is a complete constant-current/constant voltage linear charger for one cell lithium-ion battery. The charge current of pre-charging and constant–current charging is adjustable and it can be programmed to 700mA. An external resistor sets the charge current with high accuracy.\r
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VOUT1 and VOUT6 is a fixed-frequency, current-mode PWM step-down DC/DC converters that are optimized for high efficiency and is capable of supplying up to 500mA output current. VOUT2, VOUT3, VOUT4 and VOUT5 are low noise, high PSRR linear regulators\r
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The HX7009 is available in a tiny 4mm × 4mm 24-pin Thin-QFN package that is just 0.75mm Height.

特性 Features

· Six Integrated Regulators\r
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− VOUT1, VOUT6: 500mA PWM Step-Down DC/DC\r
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− VOUT2: 200mA Low-Power LDO\r
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− VOUT3, VOUT4, VOUT5: 300mA Low Noise LDO\r
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· Charges Single Cell Li-Ion Batteries Directly from USB Port\r
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· Programmable Charge Current up to 700mA\r
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· Enable/Disable Control for VOUT\r
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· Minimal External Components\r
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· 4×4mm, Thin-QFN(4*4-24) Package\r
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− Only 0.75mm Height\r
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− RoHS Compliant\r
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应用 Application

· Portable Devices and PDAs\r
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· MP3/MP4 Players\r
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· Wireless Handhelds\r
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· GPS Receivers, etc.