ACT2801QL-T0550

ACT2801QL-T0550 Datasheet

ACT2801/ACT2801C

Part	Datasheet
ACT2801QL-T0550	ACT2801QL-T0550 (pdf)

Related Parts	Information
EVK-ACT2801QL-T0550	EVK-ACT2801QL-T0550
EA2801QLT1026	EA2801QLT1026
ACT2801QL-T1026	ACT2801QL-T1026

PDF Datasheet Preview
ACT2801/ACT2801C 5V/1.5A Backup Battery Pack Manager • 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 • Backup Battery Pack • Power Bank • Mobile Power • Standalone Battery Charger with USB Output ACT2801/ACT2801C is a space-saving and highperformance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801/ACT2801C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2801/ACT2801C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801/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/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/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/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. Innovative PowerTM Output Voltage V Boost CC/CV Curve VBAT =3.7V VBAT =3.2V VBAT =4.1V 200 400 600 800 1000 1200 1400 Output Current mA Copyright 2014 Active-Semi, Inc. ORDERING INFORMATION ACT2801QL-T0550 Not Recommended for New Designs OUTPUT CHARGE CURRENT LOW BATTERY LEVEL ALARM FLASHLIGHT 5V/1.5A 1.5A PB TURN OFF BOOST PACKAGE QFN44-24 ACT2801QL-T1026 5V/1.5A 1.5A QFN44-24 ACT2801CQL-T 5V/1.5A 1.5A QFN44-24 PIN CONFIGURATION Innovative PowerTM Copyright 2014 Active-Semi, Inc. PIN DESCRIPTIONS NAME Boost/high-Z mode enable pin, internally pulled up by a resistor to battery. When HZ pin is pulled ground, boost is enabled if VIN is not present. Push button input, connect a push button from this pin to AGND, internally pulled up by a resistor to battery. PB starts up boost converter if HZ pin is grounded and VIN is not present. For ACT2801C, if this pin is pushed for 3s, flashlight is enabled. AGND Logic Ground. AGND must be connected to PGND externally through ground plane. Drive external P-FET to protect output short circuit and leakage during shutdown. nPG pin is pulled up to VOUT internally. nPG pin is pulled low if VOUT is in the range. ILIM Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 0.5A-2.0A. USB or AC adaptor input. When VIN is valid, charge and power path is enabled. 7, 8 9, 10 VOUT SW Output pin. Bypass to PGND with a high quality low ESR and ESL ceramic capacitor placed as close to the IC as possible. Internal switch to output inductor terminal. Power ground. PGND is connected to the source of low-side N-channel MOSFET and PGND the MOSFET’s gate driver. PGND must be connected to AGND externally through ground plane.

PDF Datasheet Preview

ACT2801/ACT2801C
5V/1.5A Backup Battery Pack Manager
• 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
• Backup Battery Pack
• Power Bank
• Mobile Power
• Standalone Battery Charger with USB Output

ACT2801/ACT2801C is a space-saving and highperformance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801/ACT2801C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication.

ACT2801/ACT2801C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801/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/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/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/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.

Innovative PowerTM

Output Voltage V

Boost CC/CV Curve

VBAT =3.7V

VBAT =3.2V

VBAT =4.1V
200 400 600 800 1000 1200 1400

Output Current mA

Copyright 2014 Active-Semi, Inc.
ORDERING INFORMATION

ACT2801QL-T0550 Not Recommended
for New Designs

OUTPUT

CHARGE CURRENT

LOW BATTERY LEVEL ALARM

FLASHLIGHT
5V/1.5A
1.5A

PB TURN OFF BOOST

PACKAGE QFN44-24

ACT2801QL-T1026 5V/1.5A
1.5A

QFN44-24

ACT2801CQL-T 5V/1.5A
1.5A

QFN44-24

PIN CONFIGURATION

Innovative PowerTM

Copyright 2014 Active-Semi, Inc.

PIN DESCRIPTIONS

NAME

Boost/high-Z mode enable pin, internally pulled up by a resistor to battery. When

HZ pin is pulled ground, boost is enabled if VIN is not present.

Push button input, connect a push button from this pin to AGND, internally pulled up
by a resistor to battery. PB starts up boost converter if HZ pin is grounded and

VIN is not present. For ACT2801C, if this pin is pushed for 3s, flashlight is enabled.

AGND

Logic Ground. AGND must be connected to PGND externally through ground plane.

Drive external P-FET to protect output short circuit and leakage during shutdown. nPG pin is pulled up to VOUT internally. nPG pin is pulled low if VOUT is in the range.

ILIM

Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 0.5A-2.0A.

USB or AC adaptor input. When VIN is valid, charge and power path is enabled.
7, 8 9, 10

VOUT SW

Output pin. Bypass to PGND with a high quality low ESR and ESL ceramic capacitor placed as close to the IC as possible.

Internal switch to output inductor terminal.

Power ground. PGND is connected to the source of low-side N-channel MOSFET and

PGND
the MOSFET’s gate driver. PGND must be connected to AGND externally through
ground plane.

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Datasheet ID: ACT2801QL-T0550 522277