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Datasheet

Datasheet

BM1Q011FJ

TSZ02201-0F1F0A200180-1-2

21.Jan.2016 Rev.001

© 2016 ROHM Co., Ltd. All rights reserved.

www.rohm.com

TSZ22111・15・001

●Description of Blocks

(1-1) Starter Circuit VH pin（7pin）

The IC builds in starter circuit (tolerates 650V) to VH pin (8pin). It enables to be low standby power and high speed

from VH voltage. The loss by the idling current is shown below.

ex) power consumption of starter circuit only

Vac=100V

Power＝100V*√2*10uA=1.41mW

Vac=240V

Power＝240V*√2*10uA=3.38mW

Starting time is decided by VH current and VCC pin capacitor value. The reference value of starting time is shown in

Figure 7.

current of ISTART1 flows to (shown in Figure 6). When the VH pin is shorted to GND, the large current flows from VH

line to GND. To prevent this, it is needed to insert the resistor (5kΩ~60kΩ) for limiting current between the VH line and

the VH pin. When VH pin is shorted to GND, the power of VH

resistor value depending on specifications after having confirmed allowable electricity.

Figure 5. Starter Block Diagram

Figure 6. Start-up Current vs. VCC Voltage

Figure 7. Start-up Time（example）

*The start up current is flown from VH pin (7Pin).

VCC Capacitor value [uF]

VCC Capacitor value – startup time

+

-

VCCUVLO

VCC

Cvcc

VH

FUSE

+

-

Diode

Bridge

SW1

AC

Input

7

6

Rvh