R5470KXXXCG-TR [RICOH]
Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, DFN-4;
| 型号： | R5470KXXXCG-TR |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Management Circuit, Adjustable, 1 Channel, CMOS, DFN-4 |
| 文件： | 总1页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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-) ·········· -30V (Absolute Maximum Rating)
Operating Input Voltage Range (VDD ············ 1.5V to 5.0V
)
··································· 12V (Absolute Maximum Rating)
•
•
•
Excess
Detector Threshold Range···· 0.05V to 0.13V (0.005V steps)
discharge-current Detector Threshold Accuracy ···· 10mV
)
(VDET
3)
Output Delay Time (tVDET3) ··· Typ.12ms
Detector Threshold Range···· -0.05V to -0.15V(0.005V steps)
Supply Current (IDD
Standby Current (I
)
)
···································· Typ.4.0μA
Excess
s
···································· Max.0.1μA
charge-current Voltage Accuracy ·················· 20mV
(VDET Output Delay Time (tVDET4) ··· 16ms
Over-charge Detector Threshold Range ···· 4.1V to 4.5V (0.005V steps)
4)
(VDET1)
Detector Threshold Accuracy··· 10mV (0°C to 50°C)
Output Delay Time (tVDET ) ···· Typ.1.0s
Over-discharge Detector Threshold Range····· 2.0V to 3.0V (0.1V steps)
Detector Threshold Accuracy··· 2.5%
Output Delay Time (tVDET ) ···· Typ.20ms
Short Protection Voltage (Vshort)······················ Typ.0.6V
1
Output Delay Time (tshort)······ Typ.250μs
•
• 0V-battery charge ············································Unavailable
• Packages·························································DFN(PLP)2114-4B (R5470K)
DFN(PLP)1616-6B (R5471K)
(VDET2)
2
BLOCK DIAGRAMS
R5470xxxx/ R5471xxxx
VDD
DC Circuit
Oscillator
Counter
Logic
Circuit
Level
Shift
VD1
VD2
Short
Detector
Delay
VD4
Logic
Circuit
VD3
V
SS
D
OUT
C
OUT
V-
SELECTION GUIDES
.
xxx:Serial Number of R5470x/R5471x Series designating input four threshold for
over-charge, over-discharge, excess discharge-current, and excess
charge-current detectors.
Package
DFN(PLP)2114-4B
DFN(PLP)1616-6B
Quantity per Reel
5,000 pcs
Part No.
R5470K
R5471K
.
xxx$∗ -TR
.
.
5,000 pcs
.
xxx$∗ -TR
.
.
$: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)1616-6B
DFN(PLP)2114-4B
Top View
Bottom View
Top View
Bottom View
1
2
3
4
5
6
VSS
VDD
COUT
V-
NC
DOUT
4
3
3
4
1
2
3
4
5
V-
6
5
4
4
5
6
COUT
DOUT
VSS
∗
∗
VDD
1
2
3
3
2
1
1
2
2
1
∗) 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
High Accuracy Li-ion/polymer 1Cell protector IC
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