MB3776A Просмотр технического описания (PDF) - Fujitsu

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MB3776A

Switching Regulator Controller

Fujitsu 

MB3776A

s TYPICAL CHARACTERISTIC

Output bias current vs. Output source current

-50

VCC = 2 V

Ta = +25˚C

-40

-30

-20

-10

0

0 -100 -200 -300 -400 -500 -600 -700

Output bias current IB (mA)

"L" Level output

200

VCC = 2 V

RB = 820 Ω

Ta = +25˚C

100

Output bias current vs. Output bias voltage

1.0

VCC = 2 V

Ta = +25˚C

0.8

0.6

0.4

0.2

0

0 -100 -200 -300 -400 -500 -600 -700

Output bias current IB (mA)

"H" Level output

2.0

VCC = 2 V

RB = 820 Ω

Ta = +25˚C

1.0

0

0 2 4 6 8 10 12 14 16 18 20

"L" Level output current IO (mA)

Ambient temp. vs. Oscillator frequency

210

200

VCC = 2 V

190

RB = 820 Ω

CT = 1000 pF

RT = 3 kΩ

180

170

160

150

-30 -20 0 20 40 60 75

Ambient temp. Ta (˚C)

8

0.0

0

-6 -12 -18 -24 -30

"H" Level output current IO (mA)

Timing resistor vs. Oscillator frequency

2M

1M

500 k

VCC = 3 V

RB = 820 Ω

Ta = +25˚C

100 k

50 k

10 k

5k

CT =

1000 pF

CT =

10000 pF

CT = 100 pF

1k

1k

5 k 10 k 50 k 100 k 500 k

Timing resistor RT (Ω)

(Continued)

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