Fujitsu MB39A104 manual Triangular Wave Oscillation Frequency

MB39A104

Triangular Wave Oscillation Frequency	Triangular Wave Oscillation Frequency
vs. Timing Resistor	vs. Timing Capacitor

Triangular wave oscillation		10000			Ta = +25 °C	Triangular wave oscillattion	10000
	frequency fOSC (kHz)				VCC = 12 V
					CTL = 5 V
		1000					1000
					CT = 39 pF
		100	CT = 560 pF	CT = 220 pF	CT = 100 pF		100
							frequency(kHz)OSCf
		10					10
		1	10	100	1000
			Timing resistor RT (kΩ)

	Ta = +25 °C
	VCC = 12 V
	CTL = 5 V
	RT = 11 kΩ
	RT = 24 kΩ
RT = 130 kΩ	RT = 68 kΩ

10 100 1000 10000

Timing capacitor CT (pF)

Triangular Wave Upper and Lower Limit Voltage vs. Triangular Wave Oscillation Frequency

3.2	°C
Ta = +25

and	(V)		CTL = 5 V
		3.0	VCC = 12 V
		2.8
upperwave	VvoltageCT		RT = 47 kΩ
		2.6					Upper
		2.4
		2.2
Triangular	limitlower	2.0
		1.8
		1.6					Lower
		1.4
		1.2
		0	200	400	600	800		1000 1200 1400 1600

Triangular wave oscillation frequency fOSC (kHz)

Triangular Wave Upper and Lower Limit Voltage

vs. Ambient Temperature

		3.2
and	(V)		VCC = 12 V
		2.8
			RT = 24 kΩ
		3.0	CTL = 5 V
upperwave	VvoltageCT	2.0	CT =	100 pF					Upper
		2.6
		2.4
Triangular	limitlower	2.2
		1.8
		1.6							Lower
		1.4
		1.2
		−40 −20			0	20	40	60	80	100

Ambient temperature Ta ( °C)

Triangular wave oscillation frequency fOSC (kHz)

Triangular Wave Oscillation Frequency vs. Ambient Temperature

560
					VCC = 12 V
540					CTL = 5 V
					RT = 24 kΩ
					CT = 100 pF
520
500
480
460
440
−40 −20	0	20	40	60	80 100

Ambient temperature Ta ( °C)

Triangular wave oscillation frequency fOSC (kHz)

Triangular Wave Oscillation Frequency vs. Power supply voltage

560
	Ta = +25 °C
540	CTL = 5 V
	RT = 24 kΩ
	CT = 100 pF
520

500

480

460

440

0 5 10 15 20

Power supply voltage VCC (V)

(Continued)

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