MM1433_技术文档

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

IC for Control of Lithium-ion Batteries Charging

Monolithic IC MM1433

Outline

This IC is used to control charging of lithium-ion batteries. This one IC incorporates functions for constant-

current and constant-voltage charging and for precharging, for an overcharge timer, battery temperature

detection, and other protective functions. It was developed by adding to the previous MM1332 and 1333 the

above-described functions.

Features

1. Charging voltage accuracy

2. Consumption current

30mV/cell.

5mA typ.

3. Precharge function.

4. Recharge function.

5. Overcharge timer.

6. Battery temperature detection function.

7. We can supply type for one and two cells.

Package

TSOP-24A

Applications

IC for control of lithium-ion batteries charging.

Pin Assignment

1

2

CHGSW

13

14

15

16

17

18

19

20

21

22

23

24

BAT1

BAT2

CS

RESET

TP1

3

4

TP2

CFB

24 23 22 21 20 19 18 17 16 15 14 13

5

VREF

GND1

GND2

ADJ1

ADJ2

ADJ3

ADJ4

TDET

CNT

6

V^CC

7

ADJ5

V^OUT

1

2 3 4 5 6 7 8 9 10 11 12

8

TSOP-24A

9

LED G

LED R

OSC OUT

10

11

12

OSC FB

-

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Block Diagram

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Pin Description

Pin No. Pin name

I/O

Functions

Forced charging OFF pin

1

2

CHGSW Input

RESET Input

L: Forced charging circuit ON (OFF for reset)

H: Charging stop is forced

Logic reset pin

L: Forced charging circuit ON (start)

H: Forced charging circuit OFF

Test pin 1

Pre-charge timer test pin

Input/ Inverts while counting (the middle stage of the several FF stages) and output to

Output TP1, to permit monitoring.

3

TP1

TP2

Also, TP1 output signal is inverted again inside the IC and inputs to the next stage

FF. (Timer setting is done by binary counter.)

Test pin 2

Input/

4

5

Full charge timer test pin

Output

Same structure as TP1

Reference power supply output pin

VREF Output Outputs 1.2V typ. reference voltage. Used for temperature detection reference

power supply and ADJ1 - ADJ4 adjustment.

6

7

GND1 Input

GND2 Input

Ground pin.

Overcurrent detection adjustment pin

8

ADJ1

Input

Set so that overcurrent detection does not function. Pin voltage is 1.16V typ.

Full charge detection adjustment pin

Pin voltage is set at 93mV typ. Full charge detection value can be changed by

adjusting pin voltage with an external resistor, etc.

Full charge detection is done by comparing ADJ2 pin voltage and 12dB voltage

drop value between CS and BAT.

9

ADJ2

Input

Pre-charge current adjustment pin

Pin voltage is set at 120mV typ. Pre-charge current can be changed by adjusting

pin voltage with an external resistor, etc.

10

11

ADJ3

ADJ4

Input

Pre-charge current control is done by comparing ADJ3 pin voltage and 12dB

voltage drop value between CS and BAT.

Full charge current adjustment pin

Pin voltage is set at 0.89mV typ. Full charge current can be changed by adjusting

pin voltage with an external resistor, etc.

Full charge current control is done by comparing ADJ4 pin voltage and 12dB

voltage drop value between CS and BAT.

When full charge current is controlled to rated current by an adapter, short ADJ4

pin and VREF pin so that rated current control does not function in the IC.

IC for Control of Lithium-ion Batteries Charging MM1433

Functions

MITSUMI

Pin No. Pin name

I/O

Temperature detection input pin

Apply potential resistance divided by external resistor and thermistor from

reference voltage when using. Reset state will exist if TDET pin does not reach

the specified potential.

12

TDET

Input

13

14

BAT1

BAT2

Input

Battery voltage input pins

Detect battery voltage and control charging.

Current detection pin

15

16

CS

Input

Detects current by external resistor (between CS and BAT) voltage drop and

controls charging current.

Rated current control phase compensation pin

Oscillation is improved by connecting an external capacitor (around 100pf)

between CFB and CNT for phase compensation.

Charging control output pin

CFB

17

18

CNT Output

Controls external PNP-Tr base for rated current rated voltage charging.

Power supply input pin

V^CC

Input

Rated voltage control adjustment pin

19

20

ADJ5

Allows fine adjustment of rated voltage value. For example, rated voltage value

rises by around 15mV (at 4.1V typ.) when ADJ5-GND is shorted.

Overvoltage detection output pin

V^OUT

Output For VCC overvoltage input: L

For V^CCrecommended operating voltage: H

LED C control output pin

21

22

LED G Output

LED R Output

NPN-Tr open collector output. Refer to the flow chart for ON/OFF.

LED R control output pin

NPN-Tr open collector output. Refer to the flow chart for ON/OFF.

Oscillator output pin

Timer setting time changes according to oscillation frequency.

Oscillation frequency is determined by an external resistor (connected between

OSC OUT and OSC FB) and capacitor (connected between OSC FB and GND).

For example, the full charge timer setting is 4H for external resistor of 130kΩ and

capacitor of 0.01µF.

23

24

OSC OUT Output

OSC FB

-

Input

Oscillator inverted input pin

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

(The values below are average values)

Pin Description

Pin No. Pin name Equivalent circuit diagram Pin No. Pin name Equivalent circuit diagram Pin No. Pin name Equivalent circuit diagram

1

2

3

4

5

8

9

CHGSW

RESET

TP1

10

11

12

13

14

15

16

ADJ3

ADJ4

TDET

BAT1

BAT2

CS

17

19

20

21

22

CNT

ADJ5

V^OUT

TP2

LED G

LED R

VREF

ADJ1

ADJ2

23 OSC OUT

CFB

24

OSC FB-

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

(Ta=25°C)

Absolute Maximum Ratings

Item

Symbol

Ratings

-40~+125

Unit

°C

Storage temperature

Operating temperature

Power supply voltage

Allowable loss

T^STG

T^OPR

-

20~+70

0.3~+15

250

°C

V^CCmax.

Pd

-

V

mW

Recommended Operating Conditions

Item

Symbol

Ratings

Unit

Operating temperature

Charging control operating voltage

T^OPR

-

20~+70

°C

V

VOPR

2.7~5.9

(Except where noted otherwise, Ta=25°C, VCC=5V)

Electrical Characteristics

Measurement

Item

Symbol

Conditions

Min. Typ. Max. Unit

circuit

Consumption current

Reference voltage

I^CC

18

5

5.0

7.0 mA

V

V^REF

V^ADPL

1.207

ADP detection voltage L

Hysteresis voltage width

ADP detection voltage H

Hysteresis voltage width

Impedance for

VCC : H

VCC : L

L

20

2.35 2.45 2.55

V

V^ADPLW

V^ADPH

20

50

6.1

50

100 150 mV

6.3 6.5

100 150 mV

H

V

V^ADPHW

Z^ADPL

20

30

kΩ

ADP detection output L

BAT pin leak current

I^BAT

V^BAT

V^CNT

I^SW

13, 14, 15

1

µA

V

BAT pin output voltage

CNT pin output voltage

CHGSW pin input current

CHGSW pin input voltage H

CHGSW pin input voltage L

RESET pin input current

RESET pin input voltage H

RESET pin input voltage L

Current limit 1

Ta=0~+50°C

ICNT=20mA

13

4.070 4.100 4.130

0.5

17

V

1

40

60

80

µA

V

V^SWH

V^SWL

I^RE

CHGSW : OFF

CHGSW : ON

1

0.6

1.20

0.25

80

1

2

V

40

60

µA

V

V^REH

V^REL

V^L1

Charging control circuit: OFF

Charging control circuit: ON

Quick charge

2

0.6

1.20

0.25

2

V

14, 15

13

0.20 0.22 0.24

V

Current limit 2

V^L2

Pre-charge

21

13

26

18

31

23

mV

V

Full charge detection

Low voltage detection voltage

V^F

VLV

VBAT : L

H

1.90 2.00 2.10

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Measurement

Item

Symbol

Conditions

Min. Typ. Max. Unit

circuit

Low voltage detection voltage

Hysteresis voltage width

Pre-charge detection voltage

Hysteresis voltage width

Re-charge detection voltage

Overvoltage detection voltage

Battery temperature

V^LVW

V^P

13

25

2.80 2.90 3.00

25 50 100 mV

50

100 mV

VBAT : L

H

13

V

V^PW

13

V^R

VBAT : H

VBAT : L

L

13

3.85 3.90 3.95

4.30 4.35 4.40

V

VOV

H

Low temperature 3°C

3°C detection

V^TH

V^TL1

V^TL2

12

0.835 0.860 0.885

0.390 0.413 0.435

0.335 0.353 0.370

V

detection voltage H

Battery temperature

High temperature 43°C 3°C

detection (charging start)

High temperature 50°C 3°C

detection (during charging)

detection voltage L1

Battery temperature

detection voltage L2

TDET input bias current

LED R pin output voltage

LED G pin output voltage

Timer error time

I^T

12

22

30

150

0.4

10

nA

V

V^LEDR

V^LEDG

T

ILEDR=10mA

ILEDG=10mA

21

V

Not including external deviation

21, 22

-10

%

Note 1: Current limits 1 and 2 and full charge detection are specified at current detection resistor voltage

drop.

Note 2: If the IC is damaged and control is no longer possible, its safety can not be guaranteed. Please

protect with something other than this IC.

Note 3: Temperature detection is the setting value at B constant 3435 (10KC15-1608 made by Ishizuka

Denshi).

Note 4: Use a capacitor with good temperature characteristics in the oscillator. Capacitor deviation will

contribute to timer error.

Note 5: If the battery overdischarges, charge 1mA for 14 seconds, and if it does not switch to pre-charging

during that interval, it means the IC has identified a battery abnormality.

OSC CR Setting Reference Materials

(1) OSCR CR-Oscillation Cycle T Examples

R

75k

100k

120k

130k

150k

200k

C

0.0047µ

0.0082µ

0.01µ

0.47mS

0.83mS

1.03mS

1.48mS

2.16mS

0.63mS

1.10mS

1.37mS

1.98mS

2.87mS

0.75mS

1.32mS

1.63mS

2.38mS

3.44mS

0.82mS

1.43mS

1.77mS

2.58mS

3.73mS

0.94mS

1.65mS

2.04mS

2.97mS

4.30mS

1.26mS

2.20mS

2.73mS

3.95mS

5.76mS

0.015µ

0.022µ

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

(2) Timer Times

Item

Calculation formula

Examples of calculation (for C = 0.01µ, R = 230k)

Pre-charge timer

Full charge timer

1mA charge time

T

2¹⁹

2²³

2¹³

2⁶

15min. 28S

4h7min.

14.5S

0.11S

0.45S

56.6mS

1.8S

Full charge detection delay time

Overcurrent detection delay time

Overvoltage detection delay time

Re-charge detection delay time

LED R blinking cycle

T

2⁸

2⁵

T

2¹⁰

Note: T: OSC oscillation cycle

Measuring Circuit

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

CC

(Except where noted otherwise, Ta = 25°C, V =5V, V1=V2=0V, V13=4.2V,

Measurement Procedures

SW12, 17, 20, 22, 24:A, I15=0mA Timers are not in time up state.)

Item

Measurement Procedures

Consumption current

Reference voltage

V1 = 1.2V. Measure A18 current value I^CC.

Measure T5 potential V^REF.

Gradually lower Vcc from 5V; V^CC

below 0.5V.

-

potential is VADPL when T20 potential drops

ADP detection voltage L

Hysteresis voltage width

Gradually lower V^CC

goes over V^CC

-from 2V. VCC -potential is VADPL2 when T20 potential

0.5V. VADPLW = VADLP2 -VADPL

-

Gradually increase Vcc from 5V. Vcc potential is VADPH when T20 potential

drops below 0.5V.

ADP detection voltage H

Hysteresis voltage width

Impedance for

ADP Ldetection output

BAT pin leak current

Gradually lower V^CCfrom 7V. VCC potential is VADPH2 when T20 potential

goes over V^CC

-0.5V. VADPHW = VADPH -VADPH2

V^CC= 7V, SW20: B, V20

-

0.5V, impedance between T20-GND is ZADPL.

V^CC= 0V, SW17: B, V17 = 0V. Measure A13 current value IBAT.

Gradually lower V13 from 3.5V. T13 potential is V^BATwhen T15

difference falls to less than 20mV.

-

T13 potential

BAT pin output voltage

V13 = 3.5V, SW17: B. Gradually raise V17 from 0V. T17 potential is V^CNTwhen

A17 current value 20mA.

Measure A1 current value I^SW.

CNT pin output voltage

CHGSW pin input current

CHGSW pin input voltage H V13 = 3.5V. Raise V1 from 0V to 1.2V. CHGSW: ON when A13 is more than

CHGSW pin input voltage L 500mA. CHGSW: OFF when A13 is less than 1mA. Measure VSW

.

RESET pin input current

RESET pin input voltage H

RESET pin input voltage L

Current limit 1

Measure A2 current value IRE.

V13 = 3.5V. Raise V2 from 0V to 1.2V. Charging control circuit: ON when A13 is more

than 500mA. Charging control circuit: OFF when A13 is less than 1mA. Measure VRE

V13 = 3.5V. T15-T13 potential difference is VL1.

.

Current limit 2

V13 = 3.5V. T15-T13 potential difference is V^L2.

SW24: B, I15 = 100mA. Gradually reduce I15 current value after reset. T15

T13 potential difference is VF when T21 potential goes under 0.5V.

-

Full charge detection

Gradually raise V13 from 0V. T13 potential is VLV when A13 current value goes

over 50mA.

Low voltage detection voltage

Low voltage detection voltage Gradually lower V13 from 2.5V. T13 potential is VLV2 when A13 current value

Hysteresis voltage width

goes over 10mA. V^LVW= VLV -VLV2

Gradually raise V13 from 2.5V. T13 potential is VP when A13 current value

goes over 500mA.

Pre-charge detection voltage

Pre-charge detection voltage Gradually lower V13 from 3.5V. T13 potential is VP2 when A13 current value

Hysteresis voltage width

goes under 150mA. V^PW= VP= VP2

Wait about 1S at V13 = 4.2V; in full charge detection state, gradually lower V13

Re-charge detection voltage potential to lower T21 potential to under 0.5V. T13 potential is VR when T21

potential is more than V^CC0.5V.

-

Gradually raise V13 from 4V. T13 potential is VOV when T22 potential starts to

repeat HI/LOW.

Overvoltage detection voltage

Battery temperature

detection voltage H

Battery temperature

detection voltage L1

Battery temperature

detection voltage L2

TDET input bias current

V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is V^TH

when A13 current value goes under 1mA.

V13 = 3.5V, SW12: B. Gradually raise V12 from 0V. T12 potential is V^TL1when

A13 current value goes over 500mA.

V13 = 3.5V, SW12: B. Gradually raise V12 from 0.6V. T12 potential is V^TL2

when A13 current value goes over 1mA.

SW12: B, V12 = 0V. Measure A12 current value IT.

V13 = 3.5V, SW22: B. Gradually raise V22 from 0V. T22 potential is V^LEDR

when A22 current value is 10mA.

LED R pin output voltage

Wait about 1S at V13 = 4.2V; in full charge detection state, make T21 potential

0.5V or less. Next at SW21: B, gradually raise V21 from 0V. T21 potential is

V^LEDGwhen A21 current value is 10mA.

LED G pin output voltage

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Timing Chart

Charging performed normally

Adapter abnormality

V^CC: ON

Start

5.5V

7V

VCC

0V

BAT pin

3V

voltage

4.1V

2V

BAT pin

voltage

3.9V

Re-

2.9V

Charging current

0A

LED R

Charging current

OFF

0A

Full

1mA Charging Pre- Full charge

charge

charge charge

LED G

OFF

ON

LED R

ON

LED G

OFF

ON

OFF

Power supply setting error (temperature detection pin open)

Battery overcharge

5.5V

VCC

0V

BAT pin

voltage

BAT pin

voltage

4.35V

3V

Abnormality detection at BA

pin overvoltage for 0.5S or more

Charging current

0A

LED R

LED G

LED R

OFF

ON/OFF 0.57Hz

LED G

OFF

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Battery overdischarge

Overcurrent detection

Overcurrent detection does not function

5.5V

VCC

0V

No battery

BAT pin

voltage

voltage reset

2V or less

14S

0V

Charging current

0A

1mA charging

LED R

LED G

ON/OFF 0.57Hz

OFF

Pre-charge time up

Full charge time up

5.5V

VCC

0V

Battery voltage

2.9V or more

No full charge

detection

Battery voltage

2V or less

Battery voltage

2.9V or less

BAT pin

voltage

BAT pin

voltage

4H

15min.

Charging current

Full charge

0A

Charging at about

12% of full charge

LED R

LED G

LED R

LED G

ON

ON/OFF 0.57Hz

OFF

IC for Control of Lithium-ion Batteries Charging MM1433

Re-charge detection

MITSUMI

Battery full charge

5.5V

VCC

5.5V

0V

3.9V

4.1V

BAT pin

voltage

BAT pin

voltage

0.11S

1

56mS

Charging current

Full charge

0A

LED R

LED G

LED R

LED G

ON

OFF

ON

OFF ON

OFF

ON

OFF

Application Circuit

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Flow Chart

IC for Control of Lithium-ion Batteries Charging MM1433

MITSUMI

Characteristics

Current limit 1

-

Temperature

Current limit 2 -Temperature

0.3

50

40

30

20

10

0

0.25

0.2

0.15

0.1

-

25

0

25

50

75

-25

0

25

50

75

Ambient temperature (°C)

BAT pin output voltage

-

Temperature

Re-charge detection voltage

-

Temperature

3.95

3.94

3.93

3.92

3.91

3.9

4.15

4.14

4.13

4.12

4.11

4.1

4.09

4.08

4.07

4.06

4.05

3.89

3.88

3.87

3.86

3.85

-

25

0

25

50

75

-

25

0

25

50

75

Ambient temperature (°C)

VCNT voltage

-

ICNT current

VLED G, R voltage - ILED G, R current

Ta=25°C

0.5

0.4

0.3

0.2

0.1

0.5

0.4

G

0.3

0.2

R

0.1

0

1

10

100

10

100

ILED G, R current (mA)

ICNT current (mA)

OSC oscillation cycle

-

CR

BAT pin reverse current

-

BAT pin voltage

Ta=25°C

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0

6

5

4

3

2

1

0

C=0.022µF

C=0.01µF

C=0.0047µF

100

120

140

160

180

200

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

OSC resistance R (kΩ)

BAT pin voltage (V)


型号：	MM1433
厂家：	MITSUMI ELECTRONICS, CORP.
描述：	IC for Control of Lithium-ion Batteries Charging IC锂离子电池的充电控制电池
文件：	总14页 (文件大小：340K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MM1433 [MITSUMI]

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