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Datasheet

Datasheet

BM1P066FJ

TSZ02201-0F2F0A200200-1-2

30.Oct.2013.Rev.001

© 2013 ROHM Co., Ltd. All rights reserved.

www.rohm.com

TSZ22111・15・001

The operating waveform at startup is shown in Figure 7.

Secondary

output

Switing

VH

Voltage

VCC(5pin)

VH input

current

A

B

C

ISTART1

ISTART3

ISTART2

Set voltage

D

Figure 7. Operating Waveform at Startup

A: VH voltage is applied when plugged into the outlet. At that time, charging starts from the VH pin via the start circuit to

the VCC pin.

function.

(typ = 10 uA).

When switching starts, secondary output begins to increase, but since secondary output is low, the VCC pin voltage is

reduced. The drop rate of VCC is determined by the consumption current between the VCC pin capacitor and the IC

and by the load current connected to the VCC pin. (V/t = Cvcc/Icc)

D: Since secondary output has risen to a constant voltage, voltage is applied from the auxiliary winding to the VCC pin,

and VCC voltage is stabilized.