33880 datasheet(14/25 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33880

FUNCTIONAL DESCRIPTION

LOGIC POWER (VDD)

The VDD pin supplies logic power to the 33880 device and

is used for power-on reset (POR). To achieve low standby

current on VPWR supply, power must be removed from the

VDD pin. The device will be in reset with all drivers off when

VDD is below 3.9 VDC.

OPEN DRAIN OUTPUT (D1–D8)

The D1–D8 pins are the open drain outputs of the 33880.

For High-Side Drive configurations, the drain pins are

connected to battery supply. In Low-Side Drive

configurations, the drain pins are connected to the low side of

the load. All outputs may be configured individually as

desired. When Low-Side Drive is used, the 33880 limits the

positive transient for inductive loads to 45 V.

SOURCE OUTPUT (S1–S8)

The S1–S8 pins are the source outputs of the 33880. For

High-Side Drive configurations, the source pins are

connected directly to the load. In Low-Side Drive

configurations the source is connected to ground. All outputs

may be configured individually as desired. When High-Side

drive is used, the 33880 will limit the negative transient for

inductive loads to -20 V.

33880 Datasheet(PDF) 14 Page - Freescale Semiconductor, Inc