Datasheet

L6730 - L6730B I/O Description
Doc ID 11938 Rev 3 43/52
8 I/O Description
Figure 38. Demonstration board
Table 11. I/O functions
Symbol Function
Input (Vin-Gin)
The input voltage can range from 1.8V to 14V. If the input voltage is between
4.5V and 14V it can supply also the device (through the V
CC
pin) and in this
case the pin 1 and 2 of the jumper G1 must be connected together.
Output (V
OUT
-G
OUT
)
The output voltage is fixed at 3.3V but it can be changed by replacing the
resistor R14 of the output resistor divider:
The over-current-protection limit is set at 15A but it can be changed by
replacing the resistors R1 and R12 (see OCL and OCH pin in Ta bl e 4 : P i n
connection).
V
CC
-GND
CC
Using the input voltage to supply the controller no power is required at this
input. However the controller can be supplied separately from the power stage
through the V
CC
input (4.5-14V) and, in this case, jumper G1 must be left
open.
V
CCDR
An internal LDO provides the power into the device. The input of this stage is
the V
CC
pin and the output (5V) is the V
CCDR
pin. The LDO can be bypassed,
providing directly a 5V voltage from V
CCDR
and Gndcc. In this case the pins 1
and 3 of the jumper G1 must be shorted.
TP1
This pin can be used as an input or as a test point. If all the jumper G2 pins are
shorted, TP1 can be used as a test point of the voltage at the EAREF pin. If
the pins 2 and 3 of G2 are connected together, TP1 can be used as an input to
provide an external reference for the internal error amplifier (see section 4.3.
Internal and external references).
)1(
14
16
R
R
VVo
REF
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