TL1451AMFKB datasheet(10/36 Pages) TI

Part #	TL1451AMFKB

Description	DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

PDF	36 Pages

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Manufacturer	TI [Texas Instruments]

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10 / 36 page

TL1451A

DUAL PULSEWIDTHMODULATION CONTROL CIRCUITS

SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999

www.ti.com

TYPICAL CHARACTERISTICS

100 k

10 k

1 k

1 M

1 k

4 k

10 k

40 k

100 k

400 k

1 M

TRIANGLE OSCILLATOR FREQUENCY

TIMING RESISTANCE

CT = 150 pF

CT = 1500 pF

CT = 15000 pF

VCC = 5 V

TA = 25°C

RT – Timing Resistance – Ω

–1

–2

–3

–25

OSCILLATOR FREQUENCY VARIATION

FREE-AIR TEMPERATURE

100

VCC = 3.6 V

RT = 10 kΩ

CT = 330 pF

fosc = 200 kHz

TA – Free-Air Temperature – °C

Figure 3

Figure 4

2.2

1.6

1.4

0.8

2.6

1.8

2.4

TRIANGLE WAVEFORM SWING VOLTAGE

TIMING CAPACITANCE

1.2

VCC = 5 V

RT = 5.1 kΩ

TA = 25°C

CT – Timing Capacitance – pF

101

102

103

104

105

TRIANGLE WAVEFORM PERIOD

TIMING CAPACITANCE

VCC = 5 V

RT = 5.1 kΩ

TA = 25°C

102

101

100

10–1

101

102

103

104

105

CT – Timing Capacitance – pF

Figure 5

Figure 6

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