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R5470x/R5471x Series
High Accuracy Li-ion/polymer 1Cell protector IC
High Accuracy Li-ion/polymer 1Cell protector IC
The R5470x/5471x Series are high input voltage CMOS-based protection ICs for over-charge/discharge and over-current of
rechargeable one-cell Lithium-ion/Lithium polymer battery. They can detect over-charge/discharge and excess-current of one-cell
Li-ion, further include a short circuit protection. They consist of four voltage detectors, reference units, a delay circuit, a short circuit
detector, an oscillator, a counter, and a logic circuit. Voltage accuracy is superior to previous items. DFN(PLP)2114-4B (for R5470K)
and DFN(PLP)1616-6B (for R5471K) packages are available.
FEATURES
Supply Voltage (VDD)
Charger Negative Input Voltage (V-)
Operating Input Voltage Range (VDD)
Supply Current (IDD)
Standby Current (Is)
12V (Absolute Maximum Rating)
-30V (Absolute Maximum Rating)
1.5V to 5.0V
Typ.4.0
μA
Max.0.1
μA
Excess
discharge-current
(VDET3)
Excess
charge-current
(VDET4)
Short Protection
Detector Threshold Range
Detector Threshold Accuracy
Output Delay Time (tVDET3)
Detector Threshold Range
Voltage Accuracy
Output Delay Time (tVDET4)
Voltage (Vshort)
Output Delay Time (tshort)
0.05V to 0.13V (0.005V steps)
±10mV
Typ.12ms
-0.05V to -0.15V(0.005V steps)
±20mV
16ms
Typ.0.6V
Typ.250
μs
Over-charge
(VDET1)
Over-discharge
(VDET2)
Detector Threshold Range
Detector Threshold Accuracy
Output Delay Time (tVDET1)
Detector Threshold Range
Detector Threshold Accuracy
Output Delay Time (tVDET2)
4.1V to 4.5V (0.005V steps)
±10mV (0°C to 50°C)
Typ.1.0s
2.0V to 3.0V (0.1V steps)
±2.5%
Typ.20ms
0V-battery charge
Packages
Unavailable
DFN(PLP)2114-4B (R5470K)
DFN(PLP)1616-6B (R5471K)
BLOCK DIAGRAMS
R5470xxxx/ R5471xxxx
VSS
VDD
Oscillator
Counter
Logic
Circuit
Delay
Logic
Circuit
DOUT COUT
V-
Short
Detector
Level
Shift
VD1
VD2
VD4
VD3
DC Circuit
SELECTION GUIDES
Package
Quantity per Reel
Part No.
DFN(PLP)2114-4B
5,000 pcs
R5470K.xxx.$.
-TR
DFN(PLP)1616-6B
5,000 pcs
R5471K.xxx.$.
-TR
.xxx:
.$.:
.:
Serial Number of R5470x/R5471x Series designating input four threshold for
over-charge, over-discharge, excess discharge-current, and excess
charge-current detectors.
Designation of Output delay time option of over-charge, excess
charge-current, and excess discharge-current.
(.C.) tVDET1=1s, tVDET2=20ms, tVDET3=12ms, tVDET4=16ms, tshort=250
μs
Design of protection type.
(.G.) With Latch function after Over-charge and Over-discharge.
PACKAGES
DFN(PLP)2114-4B
DFN(PLP)1616-6B
3
4
Bottom View
Top View
2
1
4
3
2
1
V-
2
COUT
3
DOUT
4
VSS
5
VDD
13
64
2
5
Top View
31
46
2
5
Bottom View
1
VSS
2
VDD
3
COUT
4
V-
5
NC
6
DOUT
) The tab is substrate level (VDD)
APPLICATIONS
Li-ion/Li Polymer protector of over-charge, over-discharge, excess-current for battery pack
High precision protectors for cell-phones and any other gadgets using on board Li-ion/Li Polymer battery