RICOH R5400N Technical data
R5400N Series
Li-ion/polymer 1Cell Protector
The R5400N Series are high input voltage CMOS-based protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion
(Li-ion) / Lithium polymer excess load current, further include a short circuit protector for preventing large external short circuit
current and excess discharge-current.
Each of these ICs is composed of three voltage detectors, reference units, a delay circuit, a short circuit detector, an oscillator, a
counter, and a logic circuit. SOT-23-5 package is available.
FEATURES
•
Supply Voltage (VDD)
•
Charger Negative Input Voltage (V-)
•
Operating Input Voltage Range (VDD)
•
Supply Current (IDD)
····························
·····························
•
Standby Current (Is)
•
Over-charge
(VDET1)
•
Over-discharge
(VDET2)
·····························
Detector Threshold Range·······
Detector Threshold Accuracy···
Output Delay Time (tV
Detector Threshold Range·······
Detector Threshold Accuracy···
Output Delay Time (tV
BLOCK DIAGRAM
12V (Absolute Maximum Rating)
···
-35V (Absolute Maximum Rating)
·····
1.5V to 5.0V
Typ. 3.5μA (A Version)
Typ. 4.0μA (B Versio n)
Max. 0.1μA
4.0V to 4.5V (0.005V steps)
±25mV (25°C)
±30mV (-5 to 55°C)
DET
1
)·······
Typ. 1.1s or 275ms
2.0V to 3.0V (0.1V steps)
±2.5%
DET
2
)·······
Typ. 20ms
•
Excess
discharge-current
DET
3
)
(V
•
Short Protection
Detector Threshold Range ····
Detector Threshold Accuracy
·····
Output Delay Time (tVDET3)····
Voltage (V
Output Delay Time (t
short)·······················
short) ······
0.05V to 0.20V (0.005V steps)
±15mV
Typ. 12ms
Typ. 1.3V
Typ. 300μs
• 0V-battery charge............................................. Selectable (A Version)
• Package ··························································· SOT-23-5
R5400N
V
DD
SELECTION GUIDE
Oscillator Counter
VD1
VD2
VD3
SS
V
Logic
Circuit
Delay
Logic
Circuit
DC Circuit
Level
Shift
Short
Detector
OUT
D
OUT
C
V-
Package Quantity per Reel Part No.
SOT-23-5 3,000 pcs R5400N.xxx.$.∗ -TR-FE
.
xxx : Serial Number for the R5400N Series designating input three threshold for
over-charge, over-discharge, and excess discharge-current detectors.
:
Designation of Output delay time for over-charge.
.$.
(.C.) tVDET1=1.1s
(.F..) tVDET1=275ms
Designation of 0V-battery charge option.
:
.∗
(.A.) 0V-charge available
(.B.) 0V-charge unavailable
PACKAGE (Top View)
SOT-23-5
5 4
1
V2VDD
3VSS
4DOUT
1 3
2
5COUT
APPLICATIONS
• Li-ion / Li polymer protector of over-charge, over-discharge, excess discharge-current, excess charge-current for battery pack
• High precision protectors for cell-phones and any other gadgets using on board Li-ion / Li polymer battery
Li-ion/polymer 1Cell Protector
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