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參數資料
| 型號： | R5422N111E-TR |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 電源管理 |
| 英文描述： | Li-lon BATTERY PROTECTOR |
| 中文描述： | POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| 封裝： | SOT-23, 6 PIN |
| 文件頁數： | 1/9頁 |
| 文件大小： | 85K |
| 代理商： | R5422N111E-TR |
’99.12.9
PRELIMINARY
Li-Ion BATTERY PROTECTOR
R5422NxxxC/xxxE series
Rev. 0.01
- 1 -
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OUTLINE
The R5422NxxxC/E Series are protection ICs for over-charge/discharge of rechargeable one-cell Lithium-ion (Li+) excess load
current, further include a short circuit protector for preventing large external short circuit current.
Each of these ICs is composed of three voltage detectors, a reference unit, a delay circuit, a short circuit protector, and a logic
circuit. When charging voltage crosses the detector threshold from a low value to a value higher than V
DET1
, the output of C
OUT
pin, the output of over-charge detector/VD1, switches to low level, charger's negative pin level after the delay time by setting an
external capacitor. After detecting over-charge the VD1 can be reset and the output of C
OUT
becomes high when the V
DD
voltage
is coming down to a level lower than “V
REL1
”, or when a kind of loading is connected to V
DD
after a charger is disconnected from
the battery pack while the V
DD
level is in between “V
DET1
” and “V
REL1
” in the R5422NxxxC/E version.
The output of D
OUT
pin, the output of over-discharge detector/VD2, switches to low level after internally fixed delay time passed,
when discharging voltage crosses the detector threshold from a high value to a value lower than V
DET2
.
After R5422NxxxC/E Series detect the over-discharge voltage, connect a charger to the battery pack, and when the battery
supply voltage becomes higher than the over-discharge detector threshold, VD2 is released and the voltage of D
OUT
becomes
“H” level.
An excess load current can be sensed and cut off after internally fixed delay time passed through the built in excess current
detector, VD3, with D
OUT
being enabled to low level. Once after detecting excess current, the VD3 is released and D
OUT
level
switches to high by detaching a battery pack from a load system.
Further, short circuit protector makes D
OUT
level to low immediately with external short circuit current and removing external
short circuit leads D
OUT
level to high. After detecting over-discharge, supply current will be kept extremely low by halt some
internal circuits operation. Output type of C
OUT
and D
OUT
is CMOS. 6-pin, SOT23-6 is available.
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FEATURES
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High Voltage Process Technology Absolute Maximum Rating of Voltage level between V
DD
-V- 28v
Low supply current....................................................Supply current
Standby current (detecting over-discharge)
Typ. 6.0μA
Typ. 0.1μA
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High accuracy detector threshold..............................Over-charge detector (Topt=25°C)
±25mV
±30 mV
±2.5%
(Topt=0 to 50°C)
Over-discharge detector
Excess current detector
±
20mV
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Variety of detector threshold .....................................Over-charge detector threshold
4.0V - 4.5V step of 0.01V
2.0V - 3.0V step of 0.01V
0.05V - 0.4V step of 0.01V
Over-discharge detector threshold
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Non-acceptable of 0V Cell E version
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Small package............................................................SOT-23-6 / 6-pin
Built-in protection circuit..........................................Excess current protection
Output delay of over-charge......................................Time delay at C=0.01μF tV
DET1
=75ms, tV
REL1
=20ms
Output delay of over-discharge .................................Internally fixed TYP. 17ms
Output delay of excess-current Internally fixed TYP. 10ms
2 Over-current modes Excess Current Mode / Short Mode
Charging Available / non-available at 0V Cell Acceptable of 0V Cell C version
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APPLICATIONS
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Li+ one-cell protector for battery pack
相關PDF資料 |
PDF描述 |
|---|---|
| R5422N112C | Li-lon BATTERY PROTECTOR |
| R5422N112C-TR | Li-lon BATTERY PROTECTOR |
| R5422N112E | Li-lon BATTERY PROTECTOR |
| R5422N112E-TR | Li-lon BATTERY PROTECTOR |
| R5VL20C | VOLTAGE DETECTOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| R5422N112C | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Li-lon BATTERY PROTECTOR |
| R5422N112C-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Li-lon BATTERY PROTECTOR |
| R5422N112E | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Li-lon BATTERY PROTECTOR |
| R5422N112E-TR | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:Li-lon BATTERY PROTECTOR |
| R542Y | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
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