mm1485 Mitsumi Electronics, Corp., mm1485 Datasheet

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mm1485

Manufacturer Part Number
mm1485
Description
Lithium-ion Battery Charge Control
Manufacturer
Mitsumi Electronics, Corp.
Datasheet
MITSUMI
MITSUMI
Outline
Features
Package
Application
Absolute Maximum Ratings
This IC is a lithium-ion battery charge control IC. It is a one-chip charge control IC where the protection circuit
incorporates constant-current/constant-voltage charge and precharge, and battery temperature detection
functions. It was developed by eliminating the timer function from MM1475 (charge control IC) and is provided
in the small package.
1. Output voltage (Ta = 0 ~ +50°C)
2. Current consumption 1
3. Battery temperature detection function
TSOP-16A
Lithium-ion battery charge control
Precharge function
Adaptor (primary side) abnormality detection function
Lithium-Ion Battery Charge Control
Monolithic IC MM1485
Operating temperature
Power supply voltage
Storage temperature
Allowable loss
Item
4.120±30mV
1.5mA typ.
(Ta=25°C)
Symbol
V
T
T
CCMAX
P
OPR
STG
D
Lithium-Ion Battery Charge Control MM1485
-40~+125
-0.3~+15
Ratings
-20~+70
250
Unit
mW
°C
°C
V

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mm1485 Summary of contents

Page 1

... Adaptor (primary side) abnormality detection function 3. Battery temperature detection function Package TSOP-16A Application Lithium-ion battery charge control Absolute Maximum Ratings Item Storage temperature Operating temperature Power supply voltage Allowable loss Lithium-Ion Battery Charge Control MM1485 4.120±30mV 1.5mA typ. (Ta=25°C) Symbol Ratings T -40~+125 STG T -20~+70 OPR V -0 ...

Page 2

... Pin Assignment TSOP-16A Lithium-Ion Battery Charge Control MM1485 Charge Current Limit OFF ON Controlled by the IC (current limit 2:25mV) ON Controlled by the adaptor (current limit 1:450mV) ON Controlled by the adaptor (current limit 1:450mV) SW1 1 SW2 ...

Page 3

... Output Overvoltage detection output pin. V overvoltage input: Output Tr OFF CC V recommended operating voltage: Output Overvoltage detection delay time setting pin. Delay time can be set by connecting an external capacitor. Lithium-Ion Battery Charge Control MM1485 Function -CS. CC -CS. CC -CS and CC ...

Page 4

... MITSUMI Pin Description The following valaeis typical Pin No. Pin name Internal equivalent circuit diagram SW1 1 SW2 2 VREF 3 ADJ 5 CDO 6 TOUT 7 TDET 8 Lithium-Ion Battery Charge Control MM1485 Pin No. Pin name Internal equivalent circuit diagram BAT 9 CFB 10 CNT VOUT2 14 VOUT1 15 16 VDET-TD ...

Page 5

... Current limits 1 and 2 are prescribed by the amount of current detection resistor voltage drop. * Safety can not be guaranteed if this IC is damaged and control no longer is possible. Please protect with * something other than this IC. Lithium-Ion Battery Charge Control MM1485 (Except where otherwise indicated Ta=25°C, V Symbol Conditions I ...

Page 6

... MITSUMI Measuring Circuit Lithium-Ion Battery Charge Control MM1485 ...

Page 7

... T pin output voltage OUT T input bias current DET Lithium-Ion Battery Charge Control MM1485 (Except where otherwise indicated Ta = 25°C, V 0.5A 0V 4.2V, S6 11, 14, 15: A) Measurement Procedure Measure A13 current value 1.2V. CC1 Measure A13 current value I ...

Page 8

... MITSUMI Timing Chart Application Circuits Lithium-Ion Battery Charge Control MM1485 Start 4.120V BAT pin voltage Charging current OA Pre- Full charge charge H SW1 L H SW2 L ...

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