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PRODUCT SPECIFICATION
RC5055
7
270
μ
F
1
μ
F
12
2.5V
20
TIP32B
5V
11
6.8
RC5055
65-5055-05
Table 2. Output Voltage Table
Note:
1. 0 = connected to GND or V
SS
, 1 = OPEN
PIN NAME
VID2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
NOMINAL
OUTPUT
VOLTAGE
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
PIN NAME
VID2
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
NOMINAL
OUTPUT
VOLTAGE
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
VID4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
VID4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
VID3
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
VID1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
VID0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Applications
Increasing the Clock Current
The RC5055 can produce as much as 100mA of current at
2.5V for powering the motherboard’s clock chips. If addi-
tional current capability is required, an external PNP transis-
tor may be used to enhance the current to 600mA or more, as
shown in Figure 2. This circuit also provides a measure of
current limit by letting the first 100mA of current be sourced
through the 6.8
resistor, so that if too much collector, and
thus base, current is demanded, the RC5055 cuts off the
drive to the base.
Figure 2. Boosting the Clock Current