View M62253AGP_712362.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
General Description
The M62253AGP is a charge control IC dedicated to Lithium-Ion batteries. The constant current/voltage charging suitable for Li-Ion batteries are available by utilizing on-chip current/voltage control circuits. It also includes the charge inhibit function for an over discharged battery and the charge control function detecting battery temperature, enabling easy configuration of a Li-Ion battery charging circuit.
Pin Configuration (Top view)
T IN 1 16 OUT 15 SENSE + 14 SENSE 13 V SENSE 12 GND 11 NC 10 C2 9 C1
C3 2 VrefSW 3 V DD 4 Vcc NC 5 6
Features
*Available for 4.1V and 4.2V battery *Accurate reference voltage 4.2V 30mV *Constant current and voltage charging *Charging inhibit and protection function for a over discharged battery *Charging inhibit and protection function for both a high and low temperature battery *Recharging function *Dual LED indications monitoring charging states *Delay circuit to prevent the erroneous detection
LED1 7 LED2 8
Package Outline : 16P2E
Applications
Li-Ion Battery Charger for hand-held instruments such as cellular phones and notebook computers
Block Diagram
The voltage value within [ ] is for 4.2V type battery. And the voltage value without [ ] is for 4.1V type battery or common value for both (4.1V and 4.2V) battery.
VDD
4.1V [4.2V]
VrefSW C1
Vcc
Regulated Supply
4.42V[4.53V]
4.0V<->3.9V [4.1V<->3.99V]
OE
OUT
Erroneous Detection Preventing
Constant Current Control
ISET
OUT SENSE+
ISENSE+ ISENSE-
3.0V [3.07V] 2.6V [2.66V]
OE
OUT
Constant Voltage Control
VSET VSENSE
SENSE-
VSENSE LED2 LED1
Erroneous Detection Preventing Erroneous Detection Preventing Current Detection
1.45V [1.49V]
TIN
3.13V [3.21V]
GND
( 1 / 10)
C3
C2
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
1. Pin Description
Pin No. 1 2 3 Symbol TIN C3 Function
Temperature sensing input(also battery connecting detection input) Delay time setting for temperature sensing (Tpd = 49ms @ 0.1uF)
Setting 4.1V type battery or 4.2V type battery VrefSW *For 4.1V type battery, VrefSW pin and VDD pin are shorted. *For 4.2V type battery, VrefSW pin is opened.
4 5 7, 8 9 10 12 13 14 15 16
VDD Vcc LED1,2 C1 C2 GND
SENSE-
Reference voltage output *For 4.1V type battery : VDD = 4.42V. *For 4.2V type battery : VDD = 4.53V. Power supply
LED driver outputs (opened collector) LED1 for during charge, LED2 for completion of charge
Delay time setting for voltage sensing (Tpd = 1.06s @ 2.2uF) Delay time setting for current sensing (Tpd = 1.15s @ 2.2uF) Ground Charging current sensing input (connect to lower voltage node) Charger output (opened collector)
VSENSE Battery output voltage sensing input
SENSE+ Charging current sensing input (connect to higher voltage node)
OUT
2. Absolute Maximum Ratings
Symbol Vcc Parameter Supply voltage
(Ta=25deg, unless otherwise noted) Condition Ratings 16 30 Vcc Ta = 25deg Ta > 25deg Vcc 300 3.0 -20 to +85 -40 to +125 Unit V mA V V mW mW/deg deg deg
Output current IOUT VSENSE Applying voltage to SENSE pin VTIN P d Ktheta Topr Tstg Applying voltage to TIN pin Power dissipation Thermal debating Operating temperature Storage temperature
( 2 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
3. Electrical Characteristics
3-1. For 4.1V type battery
(shorted Vref SW pin and VDD pin) (Vcc=12.0V, VSENSE=3.6V, Ta=25deg, unless otherwise noted) Blocks All device Symbol Vcc Icc Parameter Condition Limits Min. Typ. Max. 5.0 15.0 7 4.20 4.42 4.64 2.5 2.6 2.7 2.9 3.0 3.1 4.07 4.10 4.13 2.45 2.55 2.65 3.8 3.9 4.0 -2.0 2.0 14 25 36 227 232 14 250 250 25 60 60 273 268 Unit
V mA V V V V V V uA mV mV mV
Supply voltage Current consumption VDD output voltage VDD VDD V THchgon Charge start voltage V THqchgon Quick charge start voltage Voltage Vo chg1 Output voltage setting 1 Detection Vo chg2 Output voltage setting 2 V THrchgon Recharge start voltage IinVSENSE VSENSE terminal input current Charging current setting voltage 1 ISET1 ISET2 Current Detection ITHchgoff IINSENSE+ IINSENSEV OHLED1 V OHLED2 V THINTH1 V THINTL1 V THINTH2 V THINTL2 Iin TIN V OHOUT ILOUT td C1 td BDET1 td BDET2 C2 td IDET td ILED td chg td C3
Charge completion detecting voltage Charging current setting voltage 2
LED is off
during a charge at charge completion at charge completion
2.6VInput current into SENSE+ pin Input current into SENSE- pin LED1 pin saturation voltage
LED
T IN
OUT C1
LED2 pin saturation voltage ILED2=10mA T IN pin upper threshold voltage 1 T IN pin lower threshold voltage 1 V DD=4.42V T IN pin upper threshold voltage 2 T IN pin lower threshold voltage 2 Input current into T IN pin Output pin saturation voltage IOUT=20mA Output pin leak current V OUT =15V Delay time for voltage detection at recharge C1=2.2uF
Connect/disconnect detection time1 Connect/disconnect detection time2
4.1V con. voltage output period C2 = 2.2uF 2.55V con. voltage output period C2 = 2.2uF
3.03 1.35 3.06 1.45 -1.0
3.13 1.45 3.16 1.55 1.0
36 mV 85 uA 85 uA 0.4 V 0.4 V 3.23 V 1.55 V 3.26 V 1.65 V 2.0 1.0 1.36 1.48 136 1.48 2.86 64
uA V uA s s ms s s ms ms
0.76 0.82 76 0.82 1.56 30 34
1.06 1.15 106 1.15 2.21 90 49
Delay time for current detection Delay time for LED switch over Discharging time
Delay time for temperature detection
C2 = 2.2uF C2 = 2.2uF
C2=2.2uF (after current detection)
C3
C3 = 0.1uF
( 3 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
3-2. For 4.2V type battery
(Vcc=12.0V, VSENSE=3.6V, Ta=25deg, unless otherwise noted) Blocks All device Symbol Vcc Icc Parameter
Supply voltage Current consumption VDD output voltage Charge start voltage Quick charge start voltage Output voltage setting 1 Output voltage setting 2 Recharge start voltage VSENSE terminal input current
Charging current setting voltage 1
Condition
LED is off
VDD
VDD
V THchgon V THqchgon Voltage Vo chg1 Detection Vo chg2 V THrchgon IinVSENSE ISET1 ISET2 Current Detection ITHchgoff IINSENSE+ IINSENSEV OHLED1 V OHLED2 V THINTH1 V THINTL1 V THINTH2 V THINTL2 Iin TIN V OHOUT ILOUT td C1 td BDET1 td BDET2 C2 td IDET td ILED td chg td C3
during a charge at charge completion at charge completion
2.66VLimits Min. Typ. Max. 5.0 15.0 7 4.30 4.53 4.76 2.56 2.66 2.76 2.97 3.07 3.17 4.17 4.20 4.23 2.51 2.61 2.71 3.89 3.99 4.09 -2.0 2.0 15 26 37 232 237 15 256 256 26 60 60 280 275
Unit
V mA V V V V V V uA mV mV mV
Charging current setting voltage 2
Charge completion detecting voltage
4.1VInput current into SENSE+ pin Input current into SENSE- pin LED1 pin saturation voltage LED2 pin saturation voltage T IN pin upper threshold voltage 1 T IN pin lower threshold voltage 1 T IN pin upper threshold voltage 2 T IN pin lower threshold voltage 2 Input current into T IN pin Output pin saturation voltage
LED
T IN
V DD=4.53V
3.11 1.39 3.13 1.49 -1.0
3.21 1.49 3.23 1.59 1.0
37 mV 85 uA 85 uA 0.4 V 0.4 V 3.31 V 1.59 V 3.33 V 1.69 V
uA
OUT C1
IOUT=20mA Output pin leak current V OUT =15V Delay time for voltage detection at recharge C1=2.2uF
Connect/disconnect detection time1 Connect/disconnect detection time2
4.2V con. voltage output period C2 = 2.2uF 2.61V con. voltage output period C2 = 2.2uF
0.76 0.82 76 0.82 1.56 30 34
1.06 1.15 106
2.0 V 1.0 uA 1.36 s 1.48 136
s ms s s ms ms
Delay time for current detection Delay time for LED switch over Discharging time
Delay time for temperature detection
C2 = 2.2uF C2 = 2.2uF
C2=2.2uF (after current detection)
C3
C3 = 0.1uF
1.15 1.48 2.21 2.86 90 49 64
( 4 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
4. Functional Description
Notice: The voltage value within [ ] is for 4.2V type battery. And the voltage value w ithout [ ] is for 4.1V type battery or common value for both (4.1V and 4.2V) battery.
(1) Setting 4.1V type or 4.2V type battery If using 4.1V type battery, make VrefSW pin and VDD pin short. In this case, 4.1V constant charging is performed because internal referential voltage is set at 4.1V. If using 4.2V type battery, make VrefSW pin open. In this case, 4.2V constant charging is performed because internal referential voltage is set at 4.2V. The resistance divider between VDD and GND sets internal referential voltage. Changing VDD voltage by switching VDD pin shorted to VrefSW pin or opened sets referential voltage for constant charge 4.1V or 4.2V. (2) Detection of connecting/disconnecting a battery The connecting/disconnecting of a battery is detected via the TIN pin. The detection is performed by using an external resistor and thermistor supplied by the regulated 4.42V[4.53V] of the VDD pin. When the pin TIN voltage is between 1.45V[1.49V] and 3.13V[3.21V], it is confirmed that a battery is connected according to the internal setting. When the TIN pin voltage is less than 1.45V[1.49V] or more than 3.13V[3.21V], the charge is inhibited owing to possibilities of disconnecting a battery or unusual battery temperature. The charging start conditions (In a case a battery is connected) The charging voltage is set to 4.1V[4.2V], when the battery connection is confirmed. 1.15second (C2 = 2.2uF) later, the voltage is changed to 2.55V[2.61V] and then the detection of battery voltage will be started. (The voltage detection is not carried out until the voltage change to 2.55V[2.61V].) During the 4.1V[4.2V] constant voltage output, the voltage drop caused by the current detecting resistor is limited to 250mV[256mV]. When the battery voltage is between 2.6V[2.66V] and 4.1V[4.2V], the constant current charging starts. In the case the voltage is more than 4.1V[4.2V], the 4.1V[4.2V] constant voltage charging starts with monitoring the charging current. (3) The constant current control block and the current detection The charging current is measured between the SENSE+ and SENSE- pins, so that the constant current control is performed. The current sensing resistor drop is set as follows; in a case the battery voltage is between 2.6V[2.66V] / 3.0V[3.07V] or more than 3.0V[3.07V], it is set to 25mV[26mV] or 250mV[256mV], respectively. When the above voltage drop of less than 25mV[26mV] continues for 1.15sec(C2 =2.2uF) during the constant voltage charging, completion of the charge is confirmed and then the output changes to the constant voltage of 2.55V[2.61V]. (The preventing function of erroneous detection is worked.) (4) The constant voltage control block The battery voltage and the output voltage is measured via the VSENSE pin. When the battery voltage rises to 4.1[4.2V]V or more by the constant current charging, the 4.1V[4.2V] constant voltage control starts alternatively. When the above voltage drop of less than 25mV[26mV] continues for 1.15sec(C2 = 2.2uF) during the constant voltage charging, completion of the charge is confirmed and then the output changes to the constant voltage of 2.55V[2.61V]. (The preventing function of erroneous detection is worked.)
( 5 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
(5) The voltage detection block In a case the battery voltage monitoring via the VSENSE pin is less than 2.6V[2.66V], the charge is inhibited because of the following two reasons; a battery is over discharged or a shorted battery is connected. In a case the battery voltage is more than 2.6V[2.66V], the following two charging current values are set according to the battery outputs; the output is between 2.6V[2.66V] and 3.0V[3.07V], resulting in the current measuring resistor drop of 25mV[26mV], the output is more than 3.0V[3.07V], resulting in that of 250mV[256mV]. The battery voltage rises to 4.1V[4.2V] during the constant current charging, which changes the constant current charging to the constant voltage one. When it continues for 1.06sec(C1 =2.2uF) that the battery voltage is less than 3.9V[3..99V] after the completion of charging, the recharging will start. (The preventing function of erroneous detection is worked.) (6) The temperature detecting block Temperature detection is done through the TIN pin. Detecting battery temperature is accomplished by utilizing an external resistor and thermistor supplied by the regulated 4.42V[4.53V] of the VDD pin. When the TIN voltage is between 1.45V[1.49V] and 3.13V[3.21V], the measured temperature is regarded as normal according to the internal setting, and then the charging will start. When the voltage of the TIN pin is less than 1.45V[1.49V] or more than 3.13V[3 .21V], the charging is inhibited due to the decision of the unusual battery temperature. In a case the TIN voltage is down to below 1.45V[1.49V] after the charging have started, the charging is stopped until the TIN voltage rises to 1.55V[1.59V] or more. (It has hysteresis corresponding to battery temperature range of 2.5deg.) The temperature detection is completed after a sensing voltage is halted for 49ms(C3 =0.1uF). (The preventing function of erroneous detection is worked.) (7) The regulated power supply block For 4.1V type battery ( shorted VrefSW pin and VDD pin ), regulated 4.42V is provided via the VDD pin.For 4.2V type battery ( VrefSW pin is opened ), regulated 4.53V is provided via the VDD pin. This regulated voltage is used for detecting battery temperature with the external resistance and thermistor. (8) The output block An external PNP transistor should be connected to the OUT pin because of an opened collector output circuit configuration. The maximum output current is 30mA, which will be multiplied by hFE of an external transistor, thus enabling the high current charging. (9) The LED driving block The output configuration of this block is the opened collector by NPN Tr. The charging states are indicated by using two LEDs. LED1 or LED2 is on during the charge or at the completion of the charge, respectively. Where "on" is lighting a LED. The LED indication changes from "the charge" to "the completion of the charge" after 2.21sec (C2 =2.2uF) form the time when the completion is confirmed by monitoring the charging current.
( 6 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
5. Flowchart for charging
Charge inhibit
charge off LED1: turned OFF LED2: turned OFF
Insert Battery
1.45VNo Yes
Delay CKT. for temp. detect is start to action
After 49ms
For 4.1V type battery
Notice: The voltage, current and time value are depend on application circuit.(Page 10)
No
1.45VYes
LED1: turned ON and Const. current charge:250mA or Const. voltage charge:4.1V (during 1.15sec)
Charge inhibit
charge off LED1: turned OFF LED2: turned OFF
Const. voltage output:2.55V (during 106msec) Const. voltage charge:4.1V less than 2.6V
Check battery voltage
more than 4.1V
more than 25mA
Check charge current
less than 25mA
Const. current charge:250mA 3.0V2.6VCheck battery voltage
2.6VDelay CKT. for current detect is start to action
Charge current less than 25mA (pass to 1.15sec)
3.0VCheck battery voltage
more than 4.1V
No Check battery voltage
more than 3.0V
Const. voltage charge:4.1V less than 3.0V
more than 25mA
Check charge current
less than 25mA
Yes Stop the charge (to change output voltage to 2.55V)
Delay CKT. for current detect is start to action
Charge current less than 25mA (pass to 1.15sec)
Flowchart of temp. detect.(with hysteresis) during charge
When high temp.
Const. current or Const. voltage charge.(1.45VWhen low temp.
Const. current or Const. voltage charge.(1.45VNo
No
Yes Stop the charge (to change output voltage to 2.55V) Complete charge(charge OFF) passed 1.06sec LED1: turned OFF, LED2: turned ON
No
VTIN<1.45V
Yes
No
3.16VYes
Delay CKT. for temp. detect is start to action
After 49ms No
Delay CKT. for temp. detect is start to action
After 49ms
VTIN<1.55V
Yes
3.13VYes
more than 3.9V
Check battery voltage
less than 3.9V No
Charge inhibit
Charge inhibit
Delay CKT. for current detect is start to action
Battery voltage less than 3.9V (pass to 1.06sec)
1.55VYes
No
VTIN<3.13V
Yes
No
Delay CKT. for temp. detect is start to action
No After 49ms No
Delay CKT. for temp. detect is start to action
After 49ms
Yes
1.45VYes
VTIN<3.16V
Yes
( 7 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries Insert Battery
Charge inhibit
charge off LED1: turned OFF LED2: turned OFF 1.49VNo Yes
Delay CKT. for temp. detect is start to action
After 49ms
For 4.2V type battery
Notice: The voltage, current and time value are depend on application circuit.(Page 10)
No
1.49VYes
LED1: turned ON and Const. current charge:256mA or Const. voltage charge:4.2V (during 1.15sec)
Charge inhibit
charge off LED1: turned OFF LED2: turned OFF
Const. voltage output:2.61V (during 106msec) Const. voltage charge:4.2V less than 2.66V
Check battery voltage
more than 4.2V
more than 26mA
2.66VCheck charge current
less than 26mA
Check battery voltage
Delay CKT. for current detect is start to action
Charge current less than 26mA (pass to 1.15sec)
3.07VCheck battery voltage
more than 4.2V
2.66VNo Check battery voltage
more than 3.07V
Const. voltage charge:4.2V less than 3.07V
more than 26mA
Check charge current
less than 26mA
Yes Stop the charge (to change output voltage to 2.61V)
Delay CKT. for current detect is start to action
Charge current less than 26mA (pass to 1.15sec)
Flowchart of temp. detect.(with hysteresis) during charge
When high temp.
Const. current or Const. voltage charge.(1.49VWhen low temp.
Const. current or Const. voltage charge.(1.49VNo
No
Yes Stop the charge (to change output voltage to 2.61V) Complete charge(charge OFF) passed 1.06sec LED1: turned OFF, LED2: turned ON
No
VTIN<1.49V
Yes
No
3.23VYes
Delay CKT. for temp. detect is start to action
After 49ms No
Delay CKT. for temp. detect is start to action
After 49ms
VTIN<1.59V
Yes
3.21VYes
more than 3.99V
Check battery voltage
less than 3.99V No
Charge inhibit
Charge inhibit
Delay CKT. for current detect is start to action
Battery voltage less than 3.99V (pass to 1.06sec)
1.59VYes
No
VTIN<3.21V
Yes
No
Delay CKT. for temp. detect is start to action
No After 49ms No
Delay CKT. for temp. detect is start to action
After 49ms
Yes
1.49VYes
VTIN<3.23V
Yes
( 8 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
6. Functional Timing Diagram (The component values are the same as those of the application circuits)
Notice: The voltage value within [ ] is for 4.2V type battery. And the voltage value w ithout [ ] is for 4.1V type battery or common value for both (4.1V and 4.2V) battery.
(1) Battery connecting/disconnecting detection timing
battery is connected
4.1V[4.2V]
(2) Battery temperature detection timing
Output voltage
2.55V[2.61V]
Battery Temper.
49ms 1.15s 45deg 42.5deg 3deg 2.5deg 49ms 49ms 49ms 49ms
Voltage detection
106ms
Current detection Charge starts
Charge
ON OFF
(3) Timing diagram during a charge
4.1V[4.2V]
Battery voltage
3.9V[3.99V]
3.0V[3.07V] 1.06s 2.6V[2.66V]
Completion of detecting the battery temper. 1.15s
106ms
Constant current charging
25mA [26mA]
Constant current charging
250mA [256mA]
Constant voltage charging
Vo = 4.1V [4.2V]
Completion of charging
Vo = 2.55V [2.61V] 1.15s
Recharging Constant current charging
250mA [256mA]
250mA[256mA]
Charging current
25mA[26mA] 0 1.06s
Charge LED1 (Red) LED2 (Green)
ON OFF ON OFF
( 9 / 10)
00-08-24
MITSUBISHI
M62253AGP
Charge Control IC for Li-Ion Batteries
7. The Application Circuit
Notice: The voltage value within [ ] is for 4.2V type battery. And the voltage value without [ ] is for 4.1V type battery or common value for both (4.1V and 4.2V) battery.
1uF
2.2uF
VDD
4.1V[4.2V]
VrefSW
C1
Vcc OUT SENSE+ SENSE1 Ohm
Regulated Supply
4.42V[4.53V]
4.0V<->3.9V[4.1V<->3.99V] OE OUT
Erroneous Detection Preventing
Constant current control
ISET ISENSE+ ISENSE-
3.0V [3.07V] 2.6V [2.66V]
OE
OUT
Constant voltage control
VSET VSENSE
VSENSE
Erroneous Detection Preventing Erroneous Detection Preventing Current detection
1.45V [1.49V]
LED2 LED1
to VDD pin 10KOhm
Battery
3.13V [3.21V]
TIN
GND
C3
0.1uF
C2
2.2uF thermistor
Note : The following thermistor is recommended. Maker : ISHIZUKA DENSHI Type :103HT Characteristic :10kOhm at 25deg
The above circuit is shown in a case of 4.1V type battery. When using 4.2V type battery, make VrefSW pin open. In a case of charging a battery without a thermistor, a mechanical switch should be connected to the TIN pin so that the voltage between 1.45V[1.49V] and 3.13V[3.21V] w ill be supplied to the pin.
(10 / 10)
00-08-24

▲Up To Search▲

Price & Availability of M62253AGP

	To Download M62253AGP Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .