ACE4559P [ACE]
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current;型号: | ACE4559P |
厂家: | ACE TECHNOLOGY CO., LTD. |
描述: | 150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current 电池 |
文件: | 总15页 (文件大小:613K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Description
The ACE4559P series of devices are highly integrated Li-Ion and Li-Pol linear chargers targeted at
small capacity battery for portable applications. It is a complete constant-current/ constant voltage linear
charger. No external sense resistor is needed, and no blocking diode is required due to the internal
MOSFET architecture. It can deliver up to 150mA of charge current (using a good thermal PCB layout)
with a final float voltage accuracy of ±1%. The charge voltage is fixed at 4.2V or 4.35V, and the charge
current can be programmed externally with a single resistor. The charger function has high accuracy
current and voltage regulation loops and charge termination.
The ACE4559P automatically terminates the charge cycle when the charge current drops to 1/10 the
programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the ACE4559P will shut off, only 40nA
leakage current coming from battery at sleep mode when ambient temperature is 85℃, so it can save
energy and improve standby time.
The ACE4559P is available in a small package with TDFN1X1-6L. Standard product is Pb-Free and
Halogen-free.
Features
Charging
1% Charge Voltage Accuracy
5% Charge Current Accuracy
Support Application for Very Low Charge Currents – 1mA to 150mA
Support minimum 0.1mA Charge Termination Current
45nA Maximum Battery Output Leakage Current @ 0℃~85℃
High Voltage Chemistry Support: up to 4.35V
Others
Output Short-Circuit Protection
Soft-Start Limits Inrush Current
Charge Status Output Pin
Automatic Recharge
Application
Fitness Accessories
Smart Watches
Bluetooth Handsets
Wireless Low-Power Handheld Devices
VER 1.1
1
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Absolute Maximum Ratings
Symbol
VCC
Items
Value
-0.3~7
-0.3~7
-0.3~7
-0.3~7
Unit
V
Input Voltage
PROG Voltage
BAT Voltage
VPROG
VBAT
V
V
VCHGb
IBAT
CHGb Voltage
Battery Charge Current
Power Dissipation
V
mA
W
150
0.5
PDMAX
℃
TJ
Junction Temperature
Storage Temperature
-40~125
-55 to 150
260℃, 10s
℃
Tstg
Tsolder
Package Lead Soldering Temperature
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability.
Recommended Operating Conditions
Symbol
Items
MIN
4.5
1
NOM
5
MAX
5.5
UNIT
V
VCC
IBAT
TJ
Input operating voltage range
Battery charge current range
Junction temperature
50
150
125
100
mA
℃
0
RPROG
CC mode charge current programming resistor
1
2
KΩ
Packaging Type
TDFN1*1-6L
BAT
NC
VCC
PROG
GND
CHGb
VER 1.1
2
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Pin Description
Pin Name
Function
PIN NO
I/O
Charge Current Output. Provides charge current to the battery and
regulates the final float voltage to 4.2V or 4.35V.
O
1
2
BAT
NC
Open-Drain Charge Status Output. When the battery is charging,
the CHGb pin is pulled low. When the charge cycle is completed or
VCC is removed, the CHGb is forced high impedance.
3
4
CHGb
GND
O
Ground Ground
Charge current setting, charge current monitor. The charging
current is given by IBAT= 100/RPROG(A). Please choose 1%
precision resistor for RPROG.
5
6
PROG
VCC
O
For fixed charge current part, this pin is no bonding wire.
Power Supply
Power
Ordering information
ACE4559P XX XX + H
Halogen - free
Pb - free
DF:TDFN1*1-6
42:4.2V
435:4.35V
VER 1.1
3
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Block Diagram
Typical Application Circuit
Note 1: Cin=1uF, Co=1uF are recommended, not mandatory. Good layout and pure supply voltage can omit these capacitors.
Rprog is not needed for fixed cc current part.
VER 1.1
4
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
The following specifications apply for VCC=5V TA=25℃, unless specified otherwise.
Electrical Characteristics
Symbol
Items
Conditions
RPROG=1kΩ,VCC=5V
RPROG=1kΩ
Min
Typ
90
Max Unit
ISPLYCHRG
Charge Mode GND Current
Charge Mode Battery Current
µA
95
100
50
105
IBATCHRG
RPROG=2kΩ
mA
47.5
23.7
52.5
26.3
RPROG=4kΩ
25
ISPLYSTBY
IBATSTBY
Standby Mode Supply Current
Standby Mode Battery Current
Charge Terminated
Charge Terminated
70
µA
µA
2.4
27
VCC<VBAT<VCC+0.3V /
VCC<UVLO, no battery
ISPLYASD
IBATASD
Shutdown Mode Supply Current
Shutdown Mode BAT Pin Current
Sleep Mode BAT Pin Current
µA
µA
µA
VBAT-V
CC>0.3V
0.52
0
VCC=0 or VCC Floating
TA=25℃
IBATSLEEP1
VCC=0 or VCC Floating
TA=0℃~85℃
Sleep Mode BAT Pin Current* Note 3
Float Voltage
40
45
nA
V
IBATSLEEP2
VFLOAT
4.158
4.306
8
4.2
4.35
10
4.242
4.394
12
RPROG=1kΩ
RPROG=2kΩ
Trickle and Terminal Charge
Current
ITRIKL
4
5
6.5
mA
RPROG=4kΩ
2
2.5
2.9
100
3.8
270
80
3.5
VTRIKL
VTRIKL, HYS
VUVLO
Trickle Charge Voltage Threshold
Trickle Charge Voltage Hysteresis
UVLO Threshold
VBAT from low to high
VBAT from high to low
VCC from Low to High
VCC from high to low
VCC from High to Low
VCC from Low to High
VBAT from high to low
ICHGb=1mA
2.8
3.0
V
mV
V
3.6
4.0
VUVLO, HYS
UVLO Hysteresis
mV
VCC-VBAT Lockout Threshold
Voltage
VASD
mV
130
150
0.14
190
2
ΔVRECHRG
VCHGb
Auto Recharge Battery Voltage
CHGb Pin Output Low Voltage
Soft-Start Time
100
200
0.3
mV
V
TSS
Note 3
us
TRECHRG
TTERM
Recharge Comparator Filter Time
Charge Terminated Filter Time
Note 3
ms
ms
Note 3
1
Note 3: Guaranteed by Design
VER 1.1
5
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Typical Characteristic
VER 1.1
6
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
VER 1.1
7
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
VER 1.1
8
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
VER 1.1
9
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Operation Information
The ACE4559P is a single cell Li-Ion and Li-Pol battery linear charger using a constant-current /
constant-voltage algorithm. It is designed specially for small capacity battery that is used in handheld
devices, such as GPS tracker, Smart wrist and U-Key. It can deliver up to 150mA of charge current (using
a good thermal PCB layout) with a final float voltage accuracy of ±1%. The ACE4559P includes an
internal P-channel power MOSFET and current regulation circuitry. No blocking diode or external current
sense resistor is required, thus the basic charger circuit requires only two external components.
Furthermore, the ACE4559P is capable of operating from a USB power source.
Normal Charge Cycle
A charge cycle begins when the voltage at the VCC pin rises above the UVLO threshold level and a 1%
program resistor is connected from the PROG pin to ground or when a battery is connected to the charger
output. If the BAT pin is less than 2.9V, the charger enters trickle charge mode. In this mode, the
ACE4559P supplies approximately 1/10 the programmed charge current to bring the battery voltage up to
a safe level for full current charging.
When the BAT pin voltage rises above 2.9V, the charger enters constant-current mode, where the
programmed charge current is supplied to the battery. When the BAT pin approaches the final float
voltage, the ACE4559P enters constant-voltage mode and the charge current begins to decrease. The
charge cycle ends when the PROG voltage is less than 100mV.
Programming Charge Current
The charge current is programmed using a single resistor from the PROG pin to ground. The battery
charge current of constant current mode is 100 times the current out of the PROG pin. The program
resistor and the charge current of constant current are calculated using the following equations:
I
BAT = 100 / RPROG (A)
For example, IBAT=0.1A, RPROG=1KΩ, IBAT=0.02A, RPROG=5KΩ. Please choose 1% precision resistor for
PROG, this will effect the accuracy of CC charge current and termination current.
R
Charge Termination
A charge cycle is terminated when the charge current falls to 1/10 of the programmed value after the final
float voltage is reached. This condition is detected by using an internal, filtered comparator to monitor the
PROG pin. When the PROG pin voltage falls below 100mV for longer than TTERM (typically 1ms), charging
is terminated. The charge current is latched off and the ACE4559P enters standby mode, where the input
supply current drops to 70uA. (Note: 1/10 CC termination is disabled in trickle charging mode).
VER 1.1
10
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
When charging, transient loads on the BAT pin can cause the PROG pin to fall below 100mV for short
periods of time before the DC charge current has dropped to 1/10 of the programmed value. The 1ms
filter time (TTERM) on the termination comparator ensures that transient loads of this nature do not result in
premature charge cycle termination. Once the average charge current drops below 1/10 of the
programmed value, the ACE4559P terminates the charge cycle and ceases to provide any current
through the BAT pin, the chip will be put into standby mode. In this state, all loads on the BAT pin must be
supplied by the battery.
The ACE4559P constantly monitors the BAT pin voltage in standby mode. If this voltage drops below the
Vfloat-0.15V (typically) recharge threshold (VRECHRG), another charge cycle begins and current is once
again supplied to the battery. The state diagram of a typical charge cycle is as below:
VER 1.1
11
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Charge Status Indicator (CHGb)
The charge status output indicator is an open drain circuit. The indicator has two different states:
pull-down (~16mA), and high impedance. The pull-down state indicates that the ACE4559P is in a charge
cycle. High impedance indicates that the charge cycle is complete. The CHGb also can be used to detect
the charge states by a microprocessor with a pull-up resistor.
Shutdown Mode
The ACE4559P will be put into shutdown mode when the battery voltage is higher than the VCC voltage or
VCC-VBAT is less than VASD. This reduces the battery drain current to less than 0.5uA and the supply
current to less than 27uA. A new charge cycle can be initiated when the VCC-VBAT is high than VASD
.
The ACE4559P also be put into shutdown mode when VCC voltage down to UVLO threshold. In this state,
the CHGb pin is high impedance state. The CHGb pin is also in a high impedance state if the charge cycle
is completed.
Automatic Recharge
Once the charge cycle is terminated, the ACE4559P continuously monitors the voltage on the BAT pin
using a comparator with a 2ms filter time (TRECHRG). A charge cycle restarts when the battery voltage falls
below delta VRECHRG (which corresponds to approximately 80% to 90% battery capacity). This ensures
that the battery is kept at or near a fully charged condition and eliminates the need for periodic charge
cycle initiations. CHGb output enters a pull-down state during recharge cycles.
VER 1.1
12
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Application Informations
Stability Considerations
The constant-voltage mode feedback loop is stable without an output capacitor provided a battery is
connected to the charge output. With no battery present, an output capacitor is recommended to reduce
ripple voltage.
In constant-current mode, the PROG pin is in the feedback loop, not the battery. The constant-current
mode stability is affected by the impedance at the PROG pin. With no additional capacitance on the
PROG pin, the charger is stable with program resistor values as high as 100KΩ. However, additional
capacitance on this node reduces the maximum allowed program resistor thus it should be avoided.
Power Dissipation
ACE4559P has low temperature coefficient, at higher temperatures, the charging current will decrease
slightly. To -40℃~125℃ temperature range the change of the charging current is very small. Nearly all of
this power dissipation is generated by the internal MOSFET. This is calculated to be approximately:
PD = (VCC – VBAT)*IBAT
Maximum allowable power dissipation limited by the packaging format and cooling conditions in actual
applications. For TDFN1X1-6L package, PD is not allowed to exceed 0.3W. For example, the worse case
application of ACE4559P is VCC=5.5V, VBAT=3V, IBAT=0.1A, so PD=0.25W, it is safe. At charge cycle, the
battery voltage is rising gradually, so the power dissipation is reduce accordingly. The power dissipation
turn into heat, please taken into consideration when design system.
VCC Bypass Capacitor
Many types of capacitors can be used for input bypass, however, caution must be exercised when using
multilayer ceramic capacitors. Because of the self-resonant and high Q characteristics of some types of
ceramic capacitors, a 10uF/16V ceramic capacitor is recommended for this bypass capacitor. Due to a
high voltage transient will be generated under some start-up conditions, such as connecting the charger
input to a live power source.
Charge Current Soft-Start
The ACE4559P includes a soft-start circuit to minimize the inrush current at the start of a charge cycle.
When a charge cycle is initiated, the charge current ramps from zero to the full-scale current over a period
of approximately 190us. This has the effect of minimizing the transient current load on the power supply
during start-up.
VER 1.1
13
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Packing Information
TDFN1*1-6
Dimensions In Millimeters
Dimensions In Inches
Symbol
MIN
0.320
0.000
NOM
MAX
0.400
0.050
MIN
NOM
MAX
A
A1
A3
D
0.013
0.000
0.016
0.002
0.020
0.100REF
1.000
0.001
0.004REF
0.039
0.950
0.950
1.050
1.050
0.037
0.037
0.041
0.041
E
1.000
0.039
K
0.150MIN
0.175
0.006MIN
0.007
b
0.120
0.230
0.005
0.009
e
0.350TYP
0.400
0.014TYP
0.016
L
0.350
0.350
0.450
0.450
0.014
0.014
0.018
0.018
L1
0.400
0.016
VER 1.1
14
ACE4559P
150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current
Notes
ACE does not assume any responsibility for use as critical components in life support devices or systems
without the express written approval of the president and general counsel of ACE Electronics Co., LTD.
As sued herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and shoes failure to perform when properly used in
accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can
be reasonably expected to cause the failure of the life support device or system, or to affect its safety
or effectiveness.
ACE Technology Co., LTD.
http://www.ace-ele.com/
VER 1.1
15
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