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ACT2801 数据表(PDF) 1 Page - Active-Semi, Inc |
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ACT2801 数据表(HTML) 1 Page - Active-Semi, Inc |
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1 / 25 page  Innovative PowerTM - 1 - www.active-semi.com Copyright © 2015-2017 Active-Semi, Inc. FEATURES Dedicated Single Chip Solution for Mobile Power With Minimal Component Count 5V/1.5A Constant Output Current Limit in Boost Mode 1.5A Switching Charger Limit Programmable 4.1V to 4.35V Battery Voltage 95% Boost Efficiency (Vbat=4.1V) Adaptive to 10mA-2400mA Input Sources Battery Disconnection at Output Short <10µA Low Battery Leakage Current at HZ Mode During Storage Boost Auto Turn-off at No Load and Push Button Turn-on Battery Over Current, Over Voltage, Over Temperature and Short Circuit Protections Boost Auto Startup with Load Detection Up to 2.0A Input Current Limit with Prioritized Power Path to Output 5V+/-100mV Output Voltage in Boost Mode 1.1MHz/0.55MHz Switching Frequencies 2.2uH SMD Inductor and Low Profile Ceramic Capacitor 4 LEDs Battery Level and Status Indication Battery Impedance Compensation Full Cycle of Battery Charge Management Preconditioning, Fast Charge, Top off and End of Charge Charge Current Foldback at 110°C Die Temperature IC Over Temperature Protection at 160°C QFN4x4-24 Package APPLICATIONS Backup Battery Pack Power Bank Mobile Power Standalone Battery Charger with USB Output GENERAL DESCRIPTION ACT2801/ACT2801B/ACT2801C is a space-saving and high-performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801/ACT2801B/ACT2801C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2801/ACT2801B/ACT2801C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801/ACT2801B/ACT2801C provides a direct power path from input to output with programmable current limit while providing power to switching charger. Output has higher priority than battery charger if the programmed input current limit is reached. ACT2801/ACT2801B/ACT2801C charges battery with full cycle of preconditioning, fast charge with constant current and constant voltage until end of charge. The battery charger is thermally regulated at 110°C with charge current foldback. ACT2801/ACT2801B/ACT2801C boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. ACT2801/ACT2801B/ACT2801C provides 3.5mA constant currents to drive 4 LEDs to indicate battery level and charge status. Battery impedance is compensated for battery level indication. 5V/1.5A Backup Battery Pack Manager Rev 9, 14-Mar-17 ACT2801/ACT2801B/ACT2801C Output Current (mA) 0 200 400 600 800 1000 1200 1400 5.5 5.0 4.5 4.0 3.5 3.0 Boost CC/CV Curve ACT2801 Vout Vbat AGND PB HZ VIN LED2 LED3 LED4 Vin SW CSP CSN VOUT PGND C1 4.7uF 10V PB LED1 L1 2.2uH Rcs 50mΩ ILIM ICST IOST C3 22µF 10V R2 1.5k R3 97.6k R4 39k C2 22uF 10V BAT Vbat RIMC BLVS R5 100k R6 60k R1 25k BTV GND TH NTC R7 2.7Ω VBAT =4.1V VBAT =3.7V VBAT =3.2V |
类似零件编号 - ACT2801 |
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类似说明 - ACT2801 |
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