LT1054_15 Datasheet, PDF (22/33 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator

LT1054
SLVS033G – FEBRUARY 1990 – REVISED JULY 2015
System Examples (continued)
V_O
8V
+
100 μF
1N5817
1N5817
10 μF
+
5.5 kΩ
10 kΩ
2.5 kΩ
0.03 μF _{10 kΩ}
5V
−
1/2
LT1013
+
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50 kΩ
10 kΩ
V_I = 5 V
2 μF
+
1
FB/SD
8
V_CC
2
CAP+
7
OSC
LT1054
3
6
GND
V_REF
4
CAP−
5
V_OUT
0.1 μF
Pin numbers shown are for the P package.
Figure 28. Positive Doubler With Regulation (5-V to 8-V Converter)
+
10 μF
+
10 μF
1
FB/SD
V_I
3.5 V to 15 V
8
V_CC
2 μF
+
2
CAP+
7
OSC
LT1054
3
GND
6
V_REF
4
CAP−
5
V_OUT
R1
60 kΩ
100 μF
+
1N4001
1N4001
R2
1 MΩ
V_I = 3.5 V to 15 V
V_O MAX ≈ 2 V_IN + (V_L + 2 V_Diode)
V_L = LT1054 Voltage Loss
æ
ö
R2
=
ç
R1ç
çèç
V_OUT
V_{REF - 40}
2
mV
+
÷
1÷
÷ø÷
=
æ
R1_ççè
V_OUT
1.21 V
ö
+ 1_÷÷ø
100 μF
Pin numbers shown are for the P package.
Figure 29. Negative Doubler With Regulator
+
0.002 μF
−V_O
22
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