HA16654 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HA16654

PWM Controlled Switching Regulator

Hitachi -> Renesas Electronics 

HA16654A, HA16664A Series

A

11 k Ω

R1

27 k Ω Vref

EI

VIN

DB

RT

39 k Ω R2

G

220 pF

OUT

GND

Dummy Load

(MOS FET)

2SD667

15 Ω

2SB647

2,200 pF

I CCL

I IN

I CCS

hFE of 2SD667 and 2SD647 is defined as 60 min and 200 max

Figure 4 ICCS • ICCL Measurement Circuit

VIN

20

VIN

VIN

2SD667

80%

OUT

Output

2SB647 15 Ω

20%

GND

2,200 pF

tr

tf

Dummy Load

(MOS FET)

Figure 5 tr • tf Measurement Circuit

8

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