CAT660 Ver la hoja de datos (PDF) - Catalyst Semiconductor => Onsemi

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Fabricante

CAT660

100mA CMOS Charge Pump Inverter/Doubler

Catalyst Semiconductor => Onsemi 

CAT660

PRECISION VOLTAGE DIVIDER

A precision voltage divider is shown in figure 9. With very light load currents under 100nA, the voltage at pin 2 will be

within 0.002% of V+/2 . Output voltage accuracy decreases with increasing load.

+

V+

2

+

0.002%

+

IL < 100nA

1 BOOST/FC

V+ 8

2 CAP+

OSC 7

3

CAT660

GND

LV 6

4 CAP-

OUT 5

V+

3V to 11V

Figure 9: Precision Voltage Divider (Load ≤ 100nA)

BATTERY VOLTAGE SPLITTER

Positive and negative voltages that track each other can be obtained from a battery. Figure 10 shows how a 9V battery

can provide symmetrical positive and negative voltages equal to one-half the battery voltage.

BATTERY

9V

VBAT

3V < VBAT < 11V

+

C1

150µF

1 BOOST/FC

V+ 8

2 CAP+

OSC 7

3

CAT660

GND

LV 6

4 CAP-

OUT 5

+ VBAT (4.5V)

2

-

VBAT

2

(-4.5V)

C2

+ 150µF

Figure 10: Battery Splitter

11

Doc. No. 5000, Rev. U

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