ACE4559P435DFH [ACE]

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current;


型号：	ACE4559P435DFH
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

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

Absolute Maximum Ratings

Symbol

V_CC

Items

Value

-0.3～7

Unit

Input Voltage

PROG Voltage

BAT Voltage

V_PROG

V_BAT

V_CHGb

I_BAT

CHGb Voltage

Battery Charge Current

Power Dissipation

150

0.5

P_DMAX

℃

T_J

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

NOM

MAX

5.5

UNIT

V_CC

I_BAT

T_J

Input operating voltage range

Battery charge current range

Junction temperature

150

125

100

℃

R_PROG

CC mode charge current programming resistor

KΩ

Packaging Type

TDFN1*1-6L

BAT

VCC

PROG

GND

CHGb

VER 1.1

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.

BAT

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.

CHGb

GND

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.

PROG

VCC

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

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

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

The following specifications apply for V_CC=5V T_A=25℃, unless specified otherwise.

Electrical Characteristics

Symbol

Items

Conditions

R_PROG=1kΩ,V_CC=5V

R_PROG=1kΩ

Min

Typ

Max Unit

I_SPLYCHRG

Charge Mode GND Current

Charge Mode Battery Current

µA

100

105

I_BATCHRG

R_PROG=2kΩ

47.5

23.7

52.5

26.3

R_PROG=4kΩ

I_SPLYSTBY

I_BATSTBY

Standby Mode Supply Current

Standby Mode Battery Current

Charge Terminated

µA

2.4

V_CC<V_BAT<V_CC+0.3V /

V_CC<UVLO, no battery

I_SPLYASD

I_BATASD

Shutdown Mode Supply Current

Shutdown Mode BAT Pin Current

Sleep Mode BAT Pin Current

µA

V_BAT-V

_CC>0.3V

0.52

V_CC=0 or V_CCFloating

T_A=25℃

I_BATSLEEP1

V_CC=0 or V_CCFloating

T_A=0℃~85℃

Sleep Mode BAT Pin Current* ^{Note 3}

Float Voltage

I_BATSLEEP2

V_FLOAT

4.158

4.306

4.2

4.35

4.242

4.394

R_PROG=1kΩ

R_PROG=2kΩ

Trickle and Terminal Charge

Current

I_TRIKL

6.5

R_PROG=4kΩ

2.5

2.9

100

3.8

270

3.5

V_TRIKL

V_{TRIKL, HYS}

V_UVLO

Trickle Charge Voltage Threshold

Trickle Charge Voltage Hysteresis

UVLO Threshold

V_BATfrom low to high

V_BATfrom high to low

V_CCfrom Low to High

V_CCfrom high to low

V_CCfrom High to Low

V_CCfrom Low to High

V_BATfrom high to low

I_CHGb=1mA

2.8

3.0

3.6

4.0

V_{UVLO, HYS}

UVLO Hysteresis

V_CC-V_BATLockout Threshold

Voltage

V_ASD

130

150

0.14

190

ΔV_RECHRG

V_CHGb

Auto Recharge Battery Voltage

CHGb Pin Output Low Voltage

Soft-Start Time

100

200

0.3

T_SS

Note 3

T_RECHRG

T_TERM

Recharge Comparator Filter Time

Charge Terminated Filter Time

Note 3

Note 3: Guaranteed by Design

VER 1.1

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

Typical Characteristic

VER 1.1

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

VER 1.1

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

VER 1.1

ACE4559P

150mA Single Cell Li-ion Battery Charger, 0.1mA Termination, 45nA Battery leakage Current

VER 1.1

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:

_BAT= 100 / R_PROG(A)

For example, I_BAT=0.1A, R_PROG=1KΩ, I_BAT=0.02A, R_PROG=5KΩ. Please choose 1% precision resistor for

_PROG, this will effect the accuracy of CC charge current and termination current.

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 T_TERM(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

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 (T_TERM) 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 (V_RECHRG), 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

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 V_CCvoltage or

V_CC-V_BATis less than V_ASD. 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 V_CC-V_BATis high than V_ASD

The ACE4559P also be put into shutdown mode when V_CCvoltage 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 (T_RECHRG). A charge cycle restarts when the battery voltage falls

below delta V_RECHRG(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

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:

P_D= (V_CC– V_BAT)*I_BAT

Maximum allowable power dissipation limited by the packaging format and cooling conditions in actual

applications. For TDFN1X1-6L package, P_Dis not allowed to exceed 0.3W. For example, the worse case

application of ACE4559P is V_CC=5.5V, V_BAT=3V, I_BAT=0.1A, so P_D=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

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

0.013

0.000

0.016

0.002

0.020

0.100REF

1.000

0.001

0.004REF

0.039

0.950

1.050

0.037

0.041

1.000

0.039

0.150MIN

0.175

0.006MIN

0.007

0.120

0.230

0.005

0.009

0.350TYP

0.400

0.014TYP

0.016

0.350

0.450

0.014

0.018

0.400

0.016

VER 1.1

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

ACE4559P435DFH [ACE]

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