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ACT2802C Datasheet Download - Active-Semi

Номер произв ACT2802C
Описание 5V/2.5A Backup Battery Pack Manager
Производители Active-Semi
логотип Active-Semi логотип 

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ACT2802C Даташит, Описание, Даташиты
ACT2802/ACT2802B/ACT2802C
Rev 7, 15-Jul-16
5V/2.5A Backup Battery Pack Manager
FEATURES
 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
APPLICATIONS
 Backup Battery Pack
 Power Bank
 Mobile Power
 Standalone Battery Charger with USB Output
GENERAL DESCRIPTION
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
-1-
Boost CC/CV Profile
5.5
VBAT =3.2V
5.0
VBAT =3.7V
4.5
4.0
VBAT =4.1V
3.5
3.0
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7
Output Current (A)
www.active-semi.com
Copyright © 2016 Active-Semi, Inc.







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ACT2802C Даташит, Описание, Даташиты
ACT2802/ACT2802B/ACT2802C
Rev 7, 15-Jul-16
ORDERING INFORMATION
PART NUMBER
OUTPUT
FLASHLIGHT
PB TURN
OFF BOOST
LEDS AL-
WAYS ON IN
BOOST
LATCH OFF
AT BOOST
UVLO
BOOST
LIGHT LOAD
OFF TIME
PACKAGE
ACT2802QL-T1028 5V/2.5A
No
Yes
No Yes 16s QFN44-24
ACT2802BQL-T1028 5V/2.5A
Yes
No
Yes Yes 16s QFN44-24
ACT2802CQL-T1028 5V/2.5A
Yes
No
No Yes 16s QFN44-24
PIN CONFIGURATION
Innovative PowerTM
- 2 - www.active-semi.com
Copyright © 2016 Active-Semi, Inc.







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ACT2802C Даташит, Описание, Даташиты
ACT2802/ACT2802B/ACT2802C
Rev 7, 15-Jul-16
PIN DESCRIPTIONS
PIN NAME
DESCRIPTION
1
2
3
4
5
6
7, 8
9, 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
HZ
PB
AGND
nPG
ILIM
VIN
VOUT
SW
PGND
BAT
CSP
CSN
IOST
ICST
BTV
LED1
LED2
LED3
LED4
RIMC
BLVS
TH/FLD
EP
Boost/high-Z mode enable pin, internally pulled up by a 3Mresistor 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 3Mresistor 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 High-
Z 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.
Negative terminal of charge current sense input.
Output current setting. Connect a resistor from this pin to AGND to set output constant
current. The current setting ranges from 1.0A-2.5A.
Fast charge current setting pin. Connect a resistor from this pin to AGND to set the
charge current. The current setting ranges from 1.0A-2.5A.
Battery termination voltage setting. Connect a resistor from this pin to AGND to
program battery charge termination voltage.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery level indicator. An internal 3.5mA sink current limit is built in.
Battery impendence compensation input. Connect to a resistor from this pin to APNG
to program the battery impedance.
Battery level voltage shift. Connect a resistor from this pin to AGND to shift the battery
LED indication thresholds.
TH: ACT2802QL-T1028
Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K
pulled down resistor.
FLD: ACT2802BQL-T1028/ACT2802CQL-T1028
Open-drain flashlight driver. A internal switch can handle up to 50mA.
Exposed pad. Must be soldered to ground on the PCB.
Innovative PowerTM
- 3 - www.active-semi.com
Copyright © 2016 Active-Semi, Inc.










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