MM3114 Mitsumi Electronics, Corp., MM3114 Datasheet - Page 9

• Manufacturer Part Number: MM3114
• Description: Protection For Lithium-ion Batteries
• Manufacturer: Mitsumi Electronics, Corp.

MITSUMI
Application Circuit
3. Discharging over current detector, Short detector (VD3, Short Detector)
· When the V- pin voltage is going up to a value during the short detection voltage (V
· An output delay time for the overdischarge current detection is fixed internally (12ms typ.). When V- pin
· The delay time set in IC exists when the short circuit is detected (400ms typ.).
· The over discharge current release resistance (50kΩ typ.) is built into between V- pin and VSS pin. When the
4. DS (Delay Shortening) function
· The overcharge, the over discharge, the over discharge current detection, and the delay time when returning
· In the DS pin, the pull-down resistance of 13kΩ is connected between V
· Please open the DS pin when using usually.
· These circuits are typical examples provided for reference purposes, so in actual applications, the circuit
· MITSUMI ELECTRIC CO., LTD. assumes no responsibility for any trouble or damage as a result of the use of
· MITSUMI ELECTRIC CO., LTD. assumes no responsibility for any infringement of industrial property or any
overdischarge current detection voltage (0.150V typ.) is overdischarge current detection mode, when the V-
pin voltage higher than short detection voltage makes the short detection mode. This leads the external
discharge control Nch MOS FET turns to OFF with the D
voltage becomes during the over discharge current detection voltage and the short circuit detection if V- pin
lowers more than the over discharge current detection voltage in delay time even does not enter the over
discharge current detection mode. Moreover, when the over discharge current release, delay time is set
(4ms typ.).
load opened after detecting the over discharge current or the short circuit, V- pin is pulled down to the V
through the over discharge current release resistance, And IC returns automatically from the over discharge
current or the short circuit detection mode when V- pin voltage becomes below the over discharge current
detection voltage. When the over discharge current or the short circuit is detected, the over discharge
current release resistance is turned on. The over discharge current release resistance is usually turned off.
can be shortened by impressing the V
constants, conditions and operations should be thoroughly studied.
these circuits.
other right of a third party or us, as a result of the use of these circuits.
1
2
3
4
5
DD
DCHG
V
V3
V2
V1
DD
Protection for Lithium-Ion Batteries (4-serial cells) MM3114 Series
voltage level to the terminal DS.
OUT
pin being at low level.
VREG
CTL
V
OV
V
SS
IN
10
9
8
7
6
SS
.
DD
-0.9V typ.) and
P+
CTL
VREG
P-
SS