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.
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.
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
The HX7009 is available in a tiny 4mm × 4mm 24-pin Thin-QFN package that is just 0.75mm Height.
Applications
Ø Portable Devices and PDAs
Ø MP3/MP4 Players
Ø Wireless Handhelds
Ø GPS Receivers, etc.
Features
Ø Six Integrated Regulators
− VOUT1, VOUT6: 500mA PWM Step-Down DC/DC
− VOUT2: 200mA Low-Power LDO
− VOUT3, VOUT4, VOUT5: 300mA Low Noise LDO
Ø Charges Single Cell Li-Ion Batteries Directly from USB Port
Ø Programmable Charge Current up to 700mA
Ø Enable/Disable Control for VOUT
Ø Minimal External Components
Ø 4×4mm, Thin-QFN(4*4-24) Package
− only 0.75mm Height
− RoHS Compliant