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参数资料
| 型号： | RC2951M-3.3 |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | 固定／可调正电压单路输出LDO稳压器 |
| 英文描述： | FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PDSO8 |
| 封装： | SOIC-8 |
| 文件页数： | 11/11页 |
| 文件大小： | 213K |
| 代理商： | RC2951M-3.3 |
PRODUCT SPECIFICATION
RC2951
REV. 1.0.0 2/8/01
9
Typical Applications (continued)
6V
Lead-Acid
Battery
+
–
+
–
+
–
RC2951
VOUT
+VOUT = 5V
VTAP
R3
+VIN
GND
FB
SD
SENSE
VOUT
VTAP
+VIN
GND
FB
SD
SENSE
RC2951
8
1
2
7
1
F
6
4
3
RESET
1
F
39k
39k
100k
< 5.8V**
< 6.0V**
< 6.2V**
*Optional Latch off when drop out occurs. Adjust R3 for C2 Switching when Vin is 6.0V.
**Outputs go low whenVin drops below designated thresholds.
For values shown, Regulator shuts down when Vin < 5.5V and turns on again at 6.0V. Current drain in disconnected mode is
≈ 150 A.
*Sets disconnect Voltage
**Sets disconnect Hysteresis
100
k
1%
C1
C1-C4
LP339
+
–
*C4
C2
C3
100k
1k
1%
100k
1k
1.5k
**
1N457
FB
+
–
10k
20k
120k
100k
20
Main V+
Memory V+
≈ 400k*
for 5.5V
1%
2
8
5
3
4
6
7
1
ERROR
Figure 12. Regulator with State-of-Charge Indicator
Figure 13. Low Battery Disconnect
6V
Sealed
Lead-Acid
Battery
Source
Ni-cad
Backup
Battery
+
LM385
2950-14
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