Pin connection

L6571A - L6571B

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Doc ID 4946 Rev 6

2

Pin connection

Figure 2.

Pin connection

Table 4.

Pin description

N°

Pin

Description

1

VS

Supply input voltage with internal clamp [typ. 15.6V]

2

RF

Oscillator timing resistor pin. A buffer set alternatively to VS and GND can provide

current to the external resistor RF connected between pin 2 and 3. Alternatively,

the signal on pin 2 can be used also to drive another IC (i.e. another L6569/71 to

drive a full H-bridge)

3

CF

Oscillator timing capacitor pin. A capacitor connected between this pin and GND

fixes (together with RF) the oscillating frequency Alternatively an external logic

signal can be applied to the pin to drive the IC.

4

GND

Ground

5

LVG

Low side driver output. The output stage can deliver 170mA source and 270mA

sink [typ.values].

6

OUT

Upper driver floating reference

7

HVG

High side driver output. The output stage can deliver 170mA source and 270mA

sink [typ.values].

8

BOOT

Bootstrap voltage supply. It is the upper driver floating supply.