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PRODUCT SPECIFICATION
RC2951
7
Typical Applications
RC2951
Figure 3. 1A Regulator with 1.2V Dropout
10k
1M
2k
7
6
4
1
8
2
0.01
μ
F
220
μ
F
I
Q
ù
400
μ
A
0.002
μ
F
1
μ
F
+
V
TAP
GND
FB
Supertex
VP12C
Output
5V
±
1%@
0 to 1A
IN
SENSE
Unregulated
Input
OUT
RC2951
RC2951
Error
Output
*Minimum input-output voltage ranges from
40 mV to 400 mV, depending on load current.
Current limit is typically 160 mA.
ERROR
**Shutdown
Input
Shutdown
Input
+V = 2
30V
4
1
8
5
3
3
+V
IN
+V
IN
V
IN
*V
OUT
V
IN
V
OUT
V
OUT
I
L
=
I
L
SD
SD
1.23
R
GND
GND
FB
FB
2950-12
4
RC2951
Figure 4. 300 mA Regulator with 0.75 Dropout
Figure 6. Low Drift Current Source
Figure 5. Wide Input Voltage Range
Current Limiter
27k
330
7
7
6
4
4
1
1
8
8
2
4.7
μ
F
0.1
μ
F
1
μ
F
R
1%
Load
50mA to
300mA
+
+
V
TAP
GND
FB
2N5432
(2)
5V
Output
IN
SENSE
Unregulated
Input
OUT
Load