L99MOD51XP datasheet(7/33 Pages) STMICROELECTRONICS

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DS12667 Rev 6

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L99MOD51XP

Block diagram and pin description

Figure 2. Configuration diagram (top view)

Table 2. Pin definitions and functions

Symbol

Function

1, 18, 19,

GND

Ground.

Reference potential.

Note: For the capability of driving the full current at the outputs all pins of

GND must be externally connected.

6, 7, 14,

15, 23, 24,

29, 32

Power supply voltage (external reverse protection required).

For EMI reason a ceramic capacitor as close as possible to GND is

recommended.

Note: for the capability of driving the full current at the outputs all pins of

VS must be externally connected.

3, 4, 34

OUT1

Half-bridge output 1.

The output is built by a high side and a low side switch, which are

internally connected. The output stage of both switches is a power

DMOS transistor. Each driver has an internal reverse diode (bulk-drain-

diode: high side driver from output to VS, low side driver from GND to

output). This output is over-current and open-load protected.

Note: for the capability of driving the full current at the outputs all pins of

OUT1 must be externally connected.

Serial data input.

The input requires CMOS logic levels and receives serial data from the

microcontroller. The data is a 16bits control word and the least significant

bit (LSB, bit 0) is transferred first.

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