UCD3138RGCT datasheet(20/68 Pages) TI1

Nome de Peças	UCD3138RGCT

Descrição Electrónicos	Highly Integrated Digital Controller for Isolated Power

PDF	68 Pages

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Fabricante Electrônico	TI1 [Texas Instruments]

Página de início	http://www.ti.com

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20 / 68 page

TPOR

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Reset

TPOR

VGH

VGL

Vres

V33D

3.3 V

UCD3138

SLUSAP2 A – MARCH 2012 – REVISED MARCH 2012

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Figure 3-2. Bus timing in Extended Mode

3.6

Power On Reset (POR) / Brown Out Reset (BOR)

Figure 3-3. Power On Reset (POR) / Brown Out Reset (BOR)

VGH

– This is the V33D threshold where the internal power is declared good. The UCD3138 comes

out of reset when above this threshold.

VGL

– This is the V33D threshold where the internal power is declared bad. The device goes into

reset when below this threshold.

Vres

– This is the V33D threshold where the internal reset signal is no longer valid. Below this

threshold the device is in an indeterminate state.

IReset

– This is the internal reset signal. When low, the device is held in reset. This is equivalent to

holding the reset pin on the IC high.

TPOR

– The time delay from when VGH is exceeded to when the device comes out of reset.

Electrical Specifications

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