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 Lithium-Ion Battery ICs
ICS
One-cell li-ion/li-polymer battery protection IC
MM3638 Series
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[Outline]
MM3638 series are protection IC for lithium-ion and lithium-polymer battery. MM3638 protects the battery pack from overcharge, overdischarge, and overcurrent, etc. by controlling FET SW. In the One-cell battery pack, on resistance of the FET SW has been used for overcurrent detection. MM3638 realize overcurrent protection with high accuracy and with no temperature dependence by using a chip resistor.

[Features] (Unless otherwise specified, Topr=+25℃)

1) Range and accuracy of detection / release voltage

●Overcharge detection voltage 3.6V to 5.0V, 5mV steps Accuracy±20mV
Accuracy±25mV
(Topr=-20 to +60℃)
●Overdischarge detection voltage 2.0V to 3.0V, 50mV steps Accuracy±35mV
●Discharging overcurrent
  detection voltage
+20mV to +65mV, 1mV steps Accuracy±15%
+65mV to +300mV, 5mV steps Accuracy±10mV
●Charging overcurrent detection voltage -65mV to -20mV, 1mV steps Accuracy±15%
-300mV to -65mV, 5mV steps Accuracy±10mV
●Short detection voltage 0.4V/0.5V/0.6V Accuracy±150mV
0.9V Accuracy±300mV

2) Release condition from each protection mode

●Overcharge release condition Charger open release
 "VDD < Overcharge release voltage" and
 "Connecting load (V- > 0.4V)"
Voltage release
 When charger is connected (V- < 0.2V) :
 "VDD < Overcharge release voltage"
 When charger is opened (V- > 0.4V) :
 "VDD < Overcharge detection voltage"
●Overdischarge release condition Charger connected release
 "VDD > Overdischarge release voltage" and
 "Connecting charger(V- < 0.2V)"
Voltage release
 When charger is connected (V- < 0.2V) :
 "VDD > Overdischarge release voltage"
 When charger is opened (V- > 0.4V) :
 "VDD > Overdischarge detection voltage"
●Discharging overcurrent release condition "Removing load (V- < 0.2V)"
●Charging overcurrent release condition "Connecting load (V- > 0.4V)"

3) Range of detection delay time

●Overcharge detection delay time Selection from 0.25s, 0.5s, 1.0s
●Overdischarge detection delay time Selection from 20ms, 24ms, 96ms, 125ms
●Discharging overcurrent detection delay time Selection from 8ms, 12ms, 16ms, 20ms, 48ms
●Charging overcurrent detection delay time Selection from 8ms, 12ms, 16ms, 20ms, 48ms
●Short detection delay time Selection from 250µs, 400µs

4) 0V battery charge function     Selection from "Prohibition" or "Permission"

5) Low current consumption

●Normal mode Typ. 3.0µA, Max. 6.0µA
●Stand-by mode Max. 0.1µA (For "Charger connection release" the overdischarge release condition.)
Max. 0.6µA (For "Voltage release" the overdischarge release condition.)

6) Absolute maximum ratings

●VDD pin VSS-0.3V to 12V
●COUT pin and V- pin VDD-28V to VDD+0.3V
●DOUT pin and CS pin VSS-0.3V to VDD+0.3V
●Storage temperature -55℃ to +125℃
●Operation temperature -40℃ to +85℃


[Package]


[Pin Assignment]

SSON-6J

SON-6C

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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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