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PDF MM1639 Data sheet ( Hoja de datos )
| Número de pieza | MM1639 | |
| Descripción | Lithium-Ion Battery Charge Control | |
| Fabricantes | MITSUMI | |
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MITSUMI
Lithium-Ion Battery Charge Control (with timers) MM1639
Lithium-Ion Battery Charge Control (with timers)
Monolithic IC MM1639
Outline
This is a lithium-ion battery charge control IC. It incorporates constant-voltage and constant-current circuits
for easy implementation of lithium-ion battery charge. It includes functions to disable charging to
overdischarged batteries, disable charging due to abnormal temperature, etc., and timer functions. It is also
equipped with a 2-channel LED driver to allow the charge status to be displayed.
Features
1. Operating supply voltage
2.7~5.9V
2. Operating ambient temperature
-20~70ºC
3. Current consumption
5.0mA typ.
4. Low voltage detection voltage
2.0V typ.
5. BAT pin output voltage
4.20±0.03V (Ta=0~50ºC)
6. Recharge detection voltage
3.90V typ.
7. Precharge detection voltage
2.90V typ.
8. Fast-charge current setting Rsense=0.22V/IqCHG Example: For 0.70A, 0.22V/0.70A=0.31Ω (Rsence)
Precharge current 0.026V/Rsence=0.026/0.31Ω=0.084A
Full-charge current
Example: 0.018V/0.31Ω=0.058A
Adjustable full-charge: normally fixed at 0.103V. Full-charge current can be varied by adjusting the ADJ pin
voltage.
Example: For 0.2A, the ADJ2 pin voltage is 0.062 4 = 0.248V.
(Adjustable by placing 50kΩ between ADJ2 and VREF)
9. Total timer (C=0.01uF, for R = 130k T=1.77ms)
Precharge timer T 219
Overvoltage detect delay time T 28
Full-charge timer T 223
Recharge detection delay time T 25
1mA charge timer T 213
LED R blinking cycle T 210
Full-charge delay time T 29
Overcurrent detection delay time T 28
10. During timeout, abnormal charge, 1mA charge MM1639E LED-R=blinking
MM1639F LED-R=off
Package
VSOP-16A
Pin Assignment
16 15 14 13 12 11 10 9
12345678
VSOP-16A
1 SW 9 CS
2 TP1 10 CFB
3 TP2 11 CNT
4
VREF
12
VCC
5
GND
13 LED G
6
ADJ2
14 LED R
7
TDET
15 OSC OUT
8
BAT
16 OSC FB-
1 page  
MITSUMI
Lithium-Ion Battery Charge Control (with timers) MM1639
Absolute Maximum Ratings (Ta=25°C)
Item
Storage temperature
Operating temperature
Supply voltage
Allowable loss
Symbol
TSTG
TOPR
VCCmax.
PD
Ratings
-40~+125
-20~+70
-0.3~+15
250
Units
°C
°C
V
mW
Recommended Operating Conditions (Ta=25°C)
Item
Operating temperature
Charging control operating voltage
Symbol
TOPR
VOPR
Ratings
-20~+70
2.7~5.9
Units
°C
V
Electrical Characteristics (Except where noted otherwise, Ta=25°C, VCC=5V) (Models listed MM1639E)
Item
Symbol
Current consumption
ICC
Reference voltage
VREF
ADP detection voltage L
VADPL
ADP detection voltage L
hysteresis voltage width
VADPLW
ADP detection voltage H
VADPH
ADP detection voltage H
hysteresis voltage width
VADPHW
BAT pin leak current
IBAT
BAT pin output voltage
VBAT
CNT pin output voltage
VCNT
SW pin input current
ISW
SW pin input voltage H
VSWH
SW pin input voltage L
VSWL
Current limit 1
VL1
Current limit 2
VL2
Full charge detection
VF
Overcurrent detection
Low voltage detection
VLV
Low voltage detection
hysteresis voltage width
VLVW
Pre-charge detection voltage VP
Pro-charge detection
hysteresis voltage width
VPW
Re-charge detection voltage VR
Measurement conditions
VCC: H L
VCC: L H
Ta=0~+50°C
ICNT=20mA
Charging control circuit: OFF
Charging control circuit: ON
Full charge
Pro-charge
VBAT: L H
VBAT: L H
VBAT: H L
Measurement pin Min. Typ. Max. Units
12 5.0 7.0 mA
4
1.207
V
14 2.35 2.45 2.55 V
14 50 100 150 mV
14 6.1 6.3 6.5 V
14 50 100 150 mV
8.9 1 µA
8 4.170 4.200 4.230 V
11 0.5 V
1 80 120 160 µA
1 0.6
1.20 V
1 0.25 V
8, 9 0.20 0.22 0.24 V
8, 9 21 26 31 mV
8, 9 13 18 23 mV
8.9 0.26 0.29 0.31 V
8 1.90 2.00 2.10 V
8 25 50 100 mV
8 2.80 2.90 3.00 V
8 25 50 100 mV
8 3.85 3.90 3.95 V
5 Page 
MITSUMI
Lithium-Ion Battery Charge Control (with timers) MM1639
When setting overdischarged battery
VCC 5.5V
0V
BAT PIN
voltage
0V
Charging current
0A
Under 2V
14s
1mA charging
No return to
normal voltage
LED R
LED G
ON/OFF 0.57Hz
OFF
When overcurrent detection
VCC 5.5V
0V
BAT PIN
voltage
0V
Charging current
0A
LED R
ON
0.5s
Overcurrent detection
ON/OFF 0.57Hz
LED G
OFF
When times up for pre-charge
VCC 5.5V
0V
BAT PIN
voltage
Charging current
0A
BAT voltage
over 2V
BAT voltage
under 2V
15min.
Charging at about
12% of full charge
LED R
LED G
ON
ON/OFF 0.57Hz
OFF
When times up for full-charge
5.5V
VCC
0V
BAT PIN
voltage
BAT voltage
over 2.9V
4h
Charging current
0A
Full charge
No detection
of full charge
LED R
LED G
ON
ON/OFF 0.57Hz
OFF
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet MM1639.PDF ] | |
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