Fujitsu MB3887 manual Triangular wave oscillation frequency fOSC kHz

MB3887

Triangular wave oscillation frequency

vs. Timing resistor

Triangular wave oscillation frequency

vs. Power supply voltage

Triangular wave oscillation frequency fOSC (Hz)

1 M

100 k

10 k

10

Ta = +25 °C

VCC = 19 V

CTL = 5 V

1001000

Triangular wave oscillation frequency fOSC (kHz)

340

330

320

310

300

290

280

270

260

Ta = +25 °C

CTL = 5 V

RT = 47 kΩ

0 5 10 15 20 25

			Timing resistor RT (kΩ)
		Triangular wave oscillation frequency
			vs. Ambient temperature
	320
	315					VCC = 19 V
oscillationwaveTriangular (kHz)ffrequencyOSC	310					CTL = 5 V
						RT = 47 kΩ
	305
	300
	295
	290
	285
	280
	275
	270
	265
	260
	−40	−20	0	20	40	60 80 100

		Power supply voltage VCC (V)
		Error amplifier threshold voltage
		vs. Ambient temperature
	4.25
	2.24						VCC = 19 V
thresholdamplifierError (V)VvoltageTH							CTL = 5 V
	4.16
	4.23
	2.22
	4.21
	4.20
	4.19
	4.18
	4.17
	4.15−
		40 −20	0	20	40	60		80 100

Ambient temperature Ta ( °C)	Ambient temperature Ta (	°
		C)

(Continued)

13