A4052MP8R [AITSEMI]
BATTERY MANAGEMENT;
| 型号： | A4052MP8R |
| 厂家： | 
AiT Semiconductor |
| 描述： | BATTERY MANAGEMENT |
| 文件： | 总11页 (文件大小：291K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
DESCRIPTION
FEATURES
The A4052 is a constant- current / constant- voltage
charger circuit for single cell lithium-ion batteries.
The device includes an internal power transistor,
does not need external current sense resistor and
blocking diode in applications. A4052 requires
minimal external components, and meet the USB
bus specification, is very suitable for portable
applications in the field.
Thermal modulation circuit can control the internal
chip temperature in a safe range when the device
power dissipation be relatively large or the ambient
temperature be higher. Within a fixed constant
charge voltage 4.2V, can also be adjusted by an
external resistor.
When the input voltage (AC adapter or USB power
supply) power is lost, A4052 automatically enters a
low power sleep mode, then the battery current
consumption is less than 0.1μA. Built-in protection
circuits against irrigation, when the battery voltage
is higher than the input voltage, automatically turn
off built-in power MOSFET. Other features include
low input voltage latch, automatic recharge, the
battery temperature monitoring, Built - in OVP
protection and charge status / charge status
indication functions.
Programmable charge current up to 1A
No MOSFET, sense resistor or blocking diode
required
Complete linear charger in small package for
single cell lithium-ion batteries
Constant-current/constant-voltage operation
with thermal regulation to maximize charge
rate without risk of overheating
Charges single cell li-ion batteries directly from
USB port
Preset 4.2V charge voltage with 1% accuracy
Monitor output charge current
Automatic recharge
Charge status output pin
1/10 charge current termination
40μA supply current in shutdown
2.9V trickle charge threshold
Soft-Start limits inrush current
OVP protection function , the input is higher
than 6.8V, stop charging
Output with protection against anti-irrigation
When you unplug VIN , the IC does not
consume battery power
Available in PSOP8 Package
APPLICATION
The A4052 is available in PSOP8 package.
Mobile phones
Digital Cameras
MP4 Player
Bluetooth applications
Electronic Dictionary
portable devices
all kinds of charger
Mobile power
ORDERING INFORMATION
Package Type
PSOP8
Part Number
A4052MP8R
A4052MP8VR
MP8
V: Halogen free Package
R: Tape & Reel
Note
SPQ: 3K/Reel
AiT provides all RoHS products
Suffix ꢀ V ꢀ means Halogen free Package
REV1.0
- OCT 2013 RELEASED -
- 1 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
PIN DESCRIPTION
Top View
Pin #
1,8
Symbol
Function
NC
No Connect
Charge current programming, charge current monitoring and close pin. Charge current
is controlled by a resistor of precision of 1% to the ground. In the constant charge
current state, this port provides 1V voltage. In all conditions, this port charge current
can be calculated using the following formula:
IBAT = (VISET/RISET) ×1000
2
ISET
ISET port can also be used to turn off the charger. Resistance to side with the
separation of programming can pull the 3uA current source to increase ISET port
voltage. When the suspension reached the limit voltage 1.21V, the device enters stop
state, after charging the input current drop to 25A. This port pinch-off voltage is about
2.4V. If supply this port voltage more than pinch-off voltage, the current will be 1.5mA.
Through combinating ISET pin to the ground, the charger will back to normal.
Ground terminal, The EXPOSED pin is also connected with pin 3.
3
4
GND
VIN
Supply positive input voltage. Power supply for the charger. VCC can be 4.25V to 6.5V
and must have at least 1F bypass capacitor. If the BAT pin voltage of VCC down to
within 30 mV, A4052 into the suspension state, and make BAT Current less than 2A.
Make the battery's positive terminal connected to this pin. When the power supply
voltage lower than the threshold latch voltage or sleep mode voltage, BAT pin current
is less than 2μA. BAT pin provide the battery charge current and constant voltage
charging voltage.
5
BAT
When charging end, DONE pin is pulled low by internal switch represents that charge
has ended; otherwise DONE pin is high impedance state.
6
7
DONE
CHRG
When the charger to the battery charging, CHRG pin is pulled low by the internal
switch, represents charging being; otherwise CHRG pin is in high impedance state.
REV1.0
- OCT 2013 RELEASED -
- 2 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
ABSOLUTE MAXIMUM RATINGS
VCC, Input Supply Voltage
VPROG, ISET pin Voltage
VBAT, BAT pin Voltage
VSS-0.3V～VSS+7V
VSS-0.3V～Vcc+0.3V
Vss-0.3V～6V
VSS-0.3V～VSS+7V
VSS-0.3V～VSS+7V
1500mA
VDONE, DONE pin Voltage
VCHRG, CHAG pin Voltage
IBAT, BAT pin Current
IPROG, ISET pin Current
1500μA
TOPA, Operating Ambient Temperature
TSTR, Storage Temperature
-40°C～+85°C
-65°C～+125°C
Stress beyond above listed ꢀAbsolute Maximum Ratingsꢁ may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
REV1.0
- OCT 2013 RELEASED -
- 3 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
ELECTRICAL CHARACTERISTICS
TA=25℃, Unless specifically designated
Parameter
Symbol
VCC
Conditions
Min.
4.25
Typ.
Max.
6.5
Unit
V
Input supply voltage
Charge mode, RISET=10K
200
200
2000
Standby mode
500
Input supply current
ICC
μA
Shutdown mode (RISET not
connected, VCC<VBAT or VCC<VUV)
0℃≤TA≤85℃, IBAT=40mA
RISET =10k,Current mode
RISET =1k,Current mode
Standby mode, VBAT=4.2V
Shutdown mode
25
70
Regulated Output Voltage
VFLOAT
4.158
90
4.2
100
4.242
110
V
mA
900
0
1000
-2.5
1100
-6
BAT pin Current
IBAT
±0.1
±0.1
110
μA
Sleep mode, VCC=0V
VBAT<VTRIKL, RPROG=2k
Trickle charge current
Trickle charge Threshold
Voltage
ITRIKL
90
110
2.9
mA
V
VTRIKL
RISET=10K，VBAT Rising
2.8
3.0
110
3.93
300
Trickle voltage hysteresis
voltage
VTRHYS RISET=10k
60
3.7
150
80
3.8
200
mV
V
V CC undervoltage lockout
Threshold
VUV
From V CC low to high
VCC undervoltage lockout
hysteresis
VUVHYS
Vmsd
Vasd
mV
Iset pin rising
1.15
0.9
70
1.21
1.0
100
30
1.30
1.1
140
50
V
V
Manual shutdown threshold
voltage
Iset pin falling
VCC from low to high
VCC from high to low
RISET =10k
VCC-VBAT Lockout Threshold
voltage
mV
5
8
10
12
C/10 Termination Current
Threshold
Iterm
VPROG
VDONE
mA
V
RISET =2k
40
50
65
PROG pin Voltage
CHRG pin Output low
voltage
RISET =10k, Current mode
0.93
1.0
1.07
IDONE=5mA
ICHRG=5mA
0.35
0.35
150
0.6
0.6
20
V
CHRG pin Output low
voltage
VCHRG
V
Recharge Battery threshold
Voltage
ΔVRECG VFLOAT - VRECHRG
mV
REV1.0
- OCT 2013 RELEASED -
- 4 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
TYPICAL APPLICATION CIRCUIT
Constant- Current / Constant- Voltage 4.2V Charging App
Figure 1
REV1.0
- OCT 2013 RELEASED -
- 5 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
BLOCK DIAGRAM
REV1.0
- OCT 2013 RELEASED -
- 6 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
DETAILED INFORMATION
Application Information
Set the charge current
In constant-current mode, formula for calculating charge current: ICH = 1000V / RISET
.
H represents the charge current, units is ampere, RISET represents ISET pin to ground resistance in ohms. For
example, if you need 500mA charge current, according to the following formula: RISET = 1000V/0.5A = 2KΩ
In order to ensure good stability and temperature characteristics, RISET recommend the use of 1% precision
metal film resistors. By measuring the ISET pin voltage can be detected charge current. Charge current can
be calculated using the following formula: ICH = (VISET / RISET) × 1000
Application of USB and AC adapter while charging at the same time
A4052 can not only use USB interface to charge the battery, users can also use a wall adapter to charge the
battery. Figure 2 shows at the same time using the USB interface and the AC adapter to charge the battery
through the A4052 .when the two co-exist, the AC adapter has priority. M1 is the P-channel MOSFET, M1 is
used to prevent current from a wall adapter into the USB interface, USB interface, Schottky diode D1 prevents
the consumption of energy through the 1K resistor.
Figure 2. While using the AC adapter and USB interfaces
Battery temperature monitoring
In order to prevent the battery temperature is too high or too low, the damage caused by the battery, the
A4052 internal integrated battery temperature monitoring circuit.
REV1.0
- OCT 2013 RELEASED -
- 7 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
Enable design
By controlling whether the ISET pin resistor connected, users can reach close A4052 function.
Figure 3. A4052 Enable Design
Open-drain output status indication
A4052 has two open-drain status indication sides, CHAG and DONE, the two status indicator LEDs client can
drive or microcontroller port. CHAG used to indicate charging status, charging time, CHAG is low; DONE to
indicate the charging end of the state, when the charging end, DONE is low. When the battery temperature is
outside the normal temperature range more than 0.15 seconds, CHAG and the DONE pin is high impedance
output state.
When the battery charger not received, the charger will quickly charge the output capacitor to the constant
voltage value, as the battery voltage detection the BAT pin input leakage current, the BAT pin voltage will
slowly down to recharge threshold, so the BAT pin voltage is 150mV to form a ripple waveform, while CHAG
output pulse signal that there is no battery installed. When the battery BAT pin external connectors for the
4.7uF capacitor, the pulse period of about 2Hz.
The following table lists CHAG and DONE pin status in each case：
State
CHAG
DONE
Charge
Always bright
Always off
Full
Without Battery
Flashing
Error
Always off
Always bright
Always off
Always off
Always bright
NOTE1: CHAG flicker frequency with external capacitor when not connect battery, generally recommended
4.7uF.The greater the capacitance, the smaller frequency flicker.
NOTE2: The error situation: Beyond the operating temperature range (temperature too high or too low), Iset
side vacant, VIN <VBAT, VIN <3.8V and so on.
REV1.0
- OCT 2013 RELEASED -
- 8 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
The large current output design
Since the A4052 using the internal constant power technology, therefore , when the input VIN and BAT
pressure is too large , will lead to smaller the BAT voltage range of the maximum current , so that the charging
time becomes longer , in order to make the maximum current charging interval larger by an external resistor
or Schottky methods to achieve.
The assumption the A4052 of PSOP8 inside the package the maximum allowable power 1.2W, maximum
charge current is set to 1.2A. If uses a resistive, we assume that the use of the resistance of 0.5Ω (1W), High
current charging, the voltage drop across the resistor is 0.5*1.2=0.6V. The A4052 real operating voltage is
4.4V. Thus, in this state, (VIN-VBAT) *1.2<1.2W, therefore VBAT>3.6V，The battery voltage is above 3.6V 1.2A
charging support. Below 3.6V, the A4052 will automatically reduce the charge current to maintain the chip
internal power balance.
If Schottky similar calculation can be made , according to the Schottky voltage drop at different current .
In addition, in the high-current applications need to pay attention A4052 PCB layout design must consider
increasing EXPOSED PAD area , and will be connected to the EXPOSED PAD to GND in order to improve
the thermal performance , and ensure the stable operation of the chip .
REV1.0
- OCT 2013 RELEASED -
- 9 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
PACKAGE INFORMATION
Dimension in PSOP8 Package (Unit: mm)
Symbol
Min
Max
A
A1
A2
b
1.350
0.050
1.350
0.330
0.170
4.700
3.202
3.800
5.800
2.313
1.750
0.150
1.550
0.510
0.250
5.100
3.402
4.000
6.200
2.513
c
D
D1
E
E1
E2
e
1.270(BSC)
L
0.400
1.270
θ
0°
8°
REV1.0
- OCT 2013 RELEASED -
- 10 -
A4052
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
1A IS COMPATIBLE WITH THE USB INTERFACE,
LINEAR BATTERY MANAGEMENT CHIP
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may involve
potential risks of death, personal injury, or servere property, or environmental damage. In order to minimize
risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.0
- OCT 2013 RELEASED -
- 11 -
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明