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ACT2801 PDF даташит
| Спецификация ACT2801 изготовлена «Active-Semi» и имеет функцию, называемую «5V/1.5A Backup Battery Pack Manager». |
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Детали детали
| Номер произв | ACT2801 |
| Описание | 5V/1.5A Backup Battery Pack Manager |
| Производители | Active-Semi |
| логотип |  |
21 Pages
No Preview Available ! |
ACT2801
Rev 0, 21-Jan-14
5V/1.5A Backup Battery Pack Manager
FEATURES
Dedicated Single Chip Solution for Mobile
Power With Minimal Component Count
5V/1.5A Constant Output Current in Boost
Mode
1.5A Switching Charger
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 Boost Switching Frequencies
2.2uH SMD Inductor and Low Profile Ceramic
Capacitors
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 is a space-saving and high-performance
low-profile single-chip solution for backup battery
pack and standalone battery charger. ACT2801
integrates all the functions that a backup battery
pack needs, including switching charger, boost
converter and LED indication.
ACT2801 operates at 2.2MHz/1.1MHz for switching
charger and 1.1MHz/0.55MHz for boost converter
allowing tiny external inductor and capacitors.
ACT2801 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 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 boost converter steps battery voltage up
to 5V. Boost converter features high efficiency,
constant current regulation, short circuit protection
and over voltage protection.
ACT2801 provides 3.5mA constant currents to drive
4 LEDs to indicate battery level and charge status.
Innovative PowerTM
ActiveSwitcherTM is a trademark of Active-Semi.
-1-
Boost CC/CV Curve
5.5
VBAT =3.7V
5.0
VBAT =3.2V
4.5
4.0
VBAT =4.1V
3.5
3.0
0 200 400 600 800 1000 1200 1400
Output Current (mA)
www.active-semi.com
Copyright © 2014 Active-Semi, Inc.
Free Datasheet http://www.Datasheet4U.com
No Preview Available ! |
ORDERING INFORMATION
PART NUMBER
ACT2801QL-T
BOOST SWITCH
FREQUENCY
1.1MHz
ACT2801QL-T0550
0.55MHz
PIN CONFIGURATION
ACT2801
Rev 0, 21-Jan-14
OUTPUT
5V/1.5A
5V/1.5A
CHARGE
CURRENT
1.5A
1.5A
PACKAGE
QFN44-24
QFN44-24
PACKING
TAPE & REEL,
3KU/REEL
TAPE & REEL,
3KU/REEL
TOP VIEW
24 23 22 21 20 19
HZ 1
PB 2
AGND 3
nPG 4
ILIM 5
VIN 6
18 LED1
17 BTV
16 ICST
15 IOST
14 CSN
EP 13 CSP
7 8 9 10 11 12
QFN44-24
Innovative PowerTM
-2-
Active-Semi Confidential―Do Not Copy or Distribute
ActiveSwitcherTM is a trademark of Active-Semi.
www.active-semi.com
Copyright © 2013 Active-Semi, Inc.
Free Datasheet http://www.Datasheet4U.com
No Preview Available ! |
PIN DESCRIPTIONS
ACT2801
Rev 0, 21-Jan-14
PIN
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
NAME
HZ
PB
AGND
nPG
ILIM
VIN
VOUT
SW
PGND
BAT
CSP
CSN
IOST
ICST
BTV
LED1
LED2
LED3
LED4
RIMC
BLVS
TH
EP
DESCRIPTION
Boost high-Z mode enable pin, internally pulled up by a 3MΩ 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 3MΩ resistor to battery. When this pin is pushed for 100ms, LED1-4 indicators
are enable for 5 seconds. PB starts up boost converter if HZ pin is grounded and VIN
is not present.
Logic ground.
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 0.5A-2.0A.
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.
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 0.5A-1.5A.
Fast charge current setting pin. Connect a resistor from this pin to AGND to set the
charge current. The current setting ranges from 0.5A-1.5A.
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.
Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K
pulled down resistor.
Exposed pad. Must be soldered to ground on the PCB.
Innovative PowerTM
-3-
Active-Semi Confidential―Do Not Copy or Distribute
ActiveSwitcherTM is a trademark of Active-Semi.
www.active-semi.com
Copyright © 2013 Active-Semi, Inc.
Free Datasheet http://www.Datasheet4U.com
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| Номер в каталоге | Описание | Производители |
| ACT2801 | 5V/1.5A Backup Battery Pack Manager | Active-Semi |
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