LT1054_15 Datasheet, PDF (20/33 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator

LT1054
SLVS033G – FEBRUARY 1990 – REVISED JULY 2015
System Examples (continued)
V_I
3.5 V to 5.5 V
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20 kΩ
1
FB/SD
8
V_CC
1N914
(All)
+
10 μF
1
FB/SD
8
V_CC
2
CAP+
7
OSC
LT1054
3
6
GND
V_REF
+
5 μF
R1
20 kΩ
4
CAP−
0.002 μF
5
V_OUT
+
1 μF
R2
125 kΩ
2
CAP+
7
OSC
LTC1044
3
6
GND
V_REF
4
CAP−
5
V_OUT
R2
125 kΩ
+
100 μF
+
3 kΩ V_O
−
1 μF
+
V_I = 3.5 V to 5.5 V
V_O = 5 V
I_O MAX = 50 mA
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
1N5817
2N2219
Pin numbers shown are for the P package.
Figure 25. 3.5-V to 5-V Regulator
1N914
20
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