ACT2802QL-T

ACT2802QL-T Datasheet

ACT2802/ACT2802B/ACT2802C

Part	Datasheet
ACT2802QL-T	ACT2802QL-T (pdf)

PDF Datasheet Preview
ACT2802/ACT2802B/ACT2802C 5V/2.5A Backup Battery Pack Manager • Dedicated Single Chip Solution for Mobile Power With Minimal Component Count • 5V/2.5A Constant Output Current Limit in Boost Mode • 2.5A Switching Charger Current 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 3.0A Input Current Limit with Prioritized Power Path to Output • 5V+/-100mV Output Voltage in Boost Mode • 1.1MHz/0.55MHz Switching Frequencies • 2.2uH 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 ACT2802/ACT2802B/ACT2802C is a space-saving and high-performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2802/ACT2802B/ACT2802C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2802/ACT2802B/ACT2802C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2802/ACT2802B/ACT2802C 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. ACT2802/ACT2802B/ACT2802C 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. ACT2802/ACT2802B/ACT2802C boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. ACT2802/ACT2802B/ACT2802C 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 Boost Output Voltage V Boost CC/CV Profile VBAT =3.2V VBAT =3.7V VBAT =4.1V Output Current A Copyright 2014 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C ORDERING INFORMATION OUTPUT LOW BATTERY LEVEL ALARM FLASHLIGHT PB TURN OFF BOOST BOOST LED INDI- CATION PACKAGE LED ALWAYS ON ACT2802QL-T Not Recommended 5V/2.5A for New Designs QFN44-24 ACT2802QL-T1026 5V/2.5A QFN44-24 ACT2802BQL-T 5V/2.5A QFN44-24 ACT2802CQL-T 5V/2.5A QFN44-24 PIN CONFIGURATION Innovative PowerTM Copyright 2014 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PIN DESCRIPTIONS 3 4 5 6 7, 8 9, 10 11 13 14 15 16 17 18 19 20 21 22 23 NAME AGND nPG ILIM VIN VOUT SW PGND CSP CSN IOST ICST BTV LED1 LED2 LED3 LED4 RIMC BLVS TH/FLD 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 ACT2802B/ACT2802C, if this pin is pushed for 3s, flashlight is enabled. 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. Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 1.0A-3.0A. USB or AC adaptor input. When VIN is valid, charge and power path is enabled. 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 the MOSFET’s gate driver. PGND must be connected to AGND externally through ground plane. Battery input. Connected to the battery pack positive terminal to provide power in HighZ mode. Bypass to PGND with a high quality ceramic capacitor placed as close to the IC as possible. Positive terminal of charge current sense input. Kevin sense is required with 10nF ceramic capacitor right across CSP and CSN pins.

PDF Datasheet Preview

ACT2802/ACT2802B/ACT2802C
5V/2.5A Backup Battery Pack Manager
• Dedicated Single Chip Solution for Mobile Power

With Minimal Component Count
• 5V/2.5A Constant Output Current Limit in Boost

Mode
• 2.5A Switching Charger Current 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 3.0A Input Current Limit with Prioritized

Power Path to Output
• 5V+/-100mV Output Voltage in Boost Mode
• 1.1MHz/0.55MHz Switching Frequencies
• 2.2uH 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

ACT2802/ACT2802B/ACT2802C is a space-saving and high-performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2802/ACT2802B/ACT2802C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication.

ACT2802/ACT2802B/ACT2802C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2802/ACT2802B/ACT2802C 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.

ACT2802/ACT2802B/ACT2802C 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.

ACT2802/ACT2802B/ACT2802C boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection.

ACT2802/ACT2802B/ACT2802C 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

Boost Output Voltage V

Boost CC/CV Profile

VBAT =3.2V

VBAT =3.7V

VBAT =4.1V

Output Current A

Copyright 2014 Active-Semi, Inc.

ACT2802/ACT2802B/ACT2802C
ORDERING INFORMATION

OUTPUT

LOW BATTERY LEVEL ALARM

FLASHLIGHT

PB TURN OFF BOOST

BOOST LED INDI-

CATION

PACKAGE

LED ALWAYS ON

ACT2802QL-T

Not Recommended 5V/2.5A
for New Designs

QFN44-24

ACT2802QL-T1026 5V/2.5A

QFN44-24

ACT2802BQL-T 5V/2.5A

QFN44-24

ACT2802CQL-T 5V/2.5A

QFN44-24

PIN CONFIGURATION

Innovative PowerTM

Copyright 2014 Active-Semi, Inc.

ACT2802/ACT2802B/ACT2802C

PIN DESCRIPTIONS
3 4 5 6 7, 8 9, 10 11
13 14 15 16 17 18 19 20 21 22 23

NAME

AGND nPG ILIM VIN VOUT SW PGND

CSP CSN IOST ICST BTV LED1 LED2 LED3 LED4 RIMC BLVS

TH/FLD

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 ACT2802B/ACT2802C, if this pin is pushed for 3s, flashlight is enabled.

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.

Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 1.0A-3.0A.

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

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

Battery input. Connected to the battery pack positive terminal to provide power in HighZ mode. Bypass to PGND with a high quality ceramic capacitor placed as close to the IC as possible.

Positive terminal of charge current sense input. Kevin sense is required with 10nF ceramic capacitor right across CSP and CSN pins.

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Datasheet ID: ACT2802QL-T 522288