參數(shù)資料
型號: RC2951M-3.3
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 固定/可調(diào)正電壓單路輸出LDO穩(wěn)壓器
英文描述: FIXED/ADJUSTABLE POSITIVE LDO REGULATOR, 0.7 V DROPOUT, PDSO8
封裝: SOIC-8
文件頁數(shù): 11/11頁
文件大?。?/td> 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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