PCF8883 datasheet(8/25 Pages) NXP

tên linh kiện	PCF8883

Giải thích chi tiết về linh kiện	Capacitive proximity switch with auto-calibration, large voltage operating

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nhà sản xuất	NXP [NXP Semiconductors]

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PCF8883

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Product data sheet

Rev. 2 — 8 March 2011

8 of 25

NXP Semiconductors

PCF8883

Capacitive proximity switch with auto-calibration

8.2 Voltage regulator

The PCF8883 implements a chip-internal voltage regulator supplied by pin VDD that

provides an internal supply (VDD(INTREGD)) limited to a maximum of 4.6 V. The lock-in

voltage Vlockin on VDD is typically 4.0 V. The regulated supply is available at pin

VDD(INTREGD) and can be used to supply power to external electronic components (at a

maximum current of 0.5 mA). Figure 6 shows the relationship between VDD and

VDD(INTREGD).

Fig 5.

Switching modes timing diagram of PCF8883

013aaa077

Capacitance

on input

OUT

(push-button)

OUT

(toggle)

OUT

(pulse)

tclk(H) = CTYPE · 2 ms/nF

Fig 6.

Integrated voltage regulator

013aaa078

operational range of PCF8883

VDD(max)

Vlockin(max)

Vlockin(min)

VDD(INTREGD)

VDD

VDD(min)

VDD(max)

Vlockin(max)

Vlockin(min)

VDD(min)

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