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Fabricante

TC1222

High Frequency Switched Capacitor Voltage Converters with Shutdown in SOT Packages

Microchip Technology 

TC1221/TC1222

5.0 TYPICAL CHARACTERISTICS (CONTINUED)

TC1222 Supply Current vs. Supply Voltage

1750

1500

C1 = C2 = C3 = 0.22µF,

RL = ∞, +25°C

1250

1000

750

500

250

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

TC1222 Output Resistance vs. Supply Voltage

65

C1 = C2 = C3 = 0.22µF, +25°C

60

55

50

45

40

35

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

160

120

80

40

0

0

TC1222 Output Voltage Ripple

vs. Capacitance , C2

VIN = 3.3V, RL = 1K, +25°C

VIN = 5.0V, RL = 1K, +25°C

VIN = 5.0V

VIN = 3.3V

1

2

3

4

5

CAPACITANCE (µF)

500

450

400

350

300

250

200

150

100

0

TC1222 Output Voltage Droop

vs. Capacitance, C1 = C2

VIN = 3.3V, RL = 1K, +25°C

VIN = 5.0V, RL = 1K, +25°C

VIN = 5.0V

VIN = 3.3V

1

2

3

4

5

CAPACITANCE (µF)

TC1222 Oscillator Frequency

vs. Supply Voltage

750

C1 = C2 = C3 = 0.22µF,

RL = ∞, +25°C

700

650

600

550

500

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

DS21367B-page 10

 2002 Microchip Technology Inc.

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