RICOH R5470x, R5471x Technical data
R5470x/R5471x Series
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)
•
Over-charge
(VDET1)
•
Over-discharge
(VDET2)
BLOCK DIAGRAMS
···································
··········
············
····································
····································
DET
1
····
···
) ····
Detector Threshold Range
Detector Threshold Accuracy
Output Delay Time (tV
Detector Threshold Range·····
Detector Threshold Accuracy
Output Delay Time (tV
DET
2
···
) ····
12V (Absolute Maximum Rating)
-30V (Absolute Maximum Rating)
1.5V to 5.0V
Typ.4.0μA
Max.0.1μA
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
R5470xxxx/ R5471xxxx
V
DD
VD1
VD4
VD2
VD3
•
Excess
discharge-current
DET
3
)
(V
•
Excess
charge-current
DET
4
)
(V
•
Short Protection
Detector Threshold Range····
Detector Threshold Accuracy
Output Delay Time (tVDET3) ···
Detector Threshold Range····
Voltage Accuracy ··················
Output Delay Time (tV
Voltage (V
short) ······················
Output Delay Time (t
DET4) ···
short)······
• 0V-battery charge ············································
• Packages·························································
Logic
Circuit
Delay
Logic
Circuit
DC Circuit
Level
Shift
Short
Detector
Oscillator Counter
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.250μs
Unavailable
DFN(PLP)2114-4B (R5470K)
DFN(PLP)1616-6B (R5471K)
SS
V
OUT
D
OUT
C
V-
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=250μs
Design of protection type.
:
.∗
(.G.) With Latch function after Over-charge and Over-discharge.
PACKAGES
DFN(PLP)2114-4B
4 3
Bottom ViewTop V ie w
3 4
∗
V-
1
2 COUT
3 DOUT
Top Vie w
64
5
4 VSS
5 VDD
2 1
∗) The tab is substrate level (VDD)
2 1
13
2
DFN(PLP)1616-6B
Bottom View
46
5
31
2
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
SS
1 V
2 VDD
∗
3 COUT
4
V5 NC
6 DOUT
High Accuracy Li-ion/polymer 1Cell protector IC
Loading...