MCP201-I/SN Microchip Technology, MCP201-I/SN Datasheet - Page 8

• Manufacturer Part Number: MCP201-I/SN
• Description: IC LIN TXRX ON-BOARD VREG 8SOIC
• Manufacturer: Microchip Technology
• Type: Line Transceiverr

Specifications of MCP201-I/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Drivers/receivers: 1/1
• Protocol: LIN
• Voltage - Supply: 6 V ~ 18 V
• Mounting Type: Surface Mount
• Operating Supply Voltage: 18 V
• Mounting Style: SMD/SMT
• Supply Current: 1 mA
• Output Voltage: 5V
• Output Current: 50mA
• Supply Voltage Range: 6V To 18V
• Baud Rate: 20Kbaud
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP201
TABLE 1-4:
TABLE 1-5:
1.6
The MCP201 has a low drop-out voltage, positive
regulator capable of supplying 5.00 VDC ±5% at up to
50 mA of load current over the entire operating
temperature range. With a load current of 50 mA, the
minimum input-to-output voltage differential required
for the output to remain in regulation is typically +0.5V
(+1V maximum over the full operating temperature
range). Quiescent current is less than 1.0 mA, with a
full 50 mA load current, when the input-to-output
voltage differential is greater than +2V.
The regulator requires an external output bypass
capacitor for stability. The capacitor should be either a
ceramic or tantalum for stable operation over the
extended temperature range. The compensation
capacitor should range from 1.0 µf – 22 µf and have a
ESR or CSR of 0.4Ω – 5.0Ω. The input capacitor, C
Figure 1.4 should be on the order of 8 to 10 times larger
than the output capacitor, C
Designed for automotive applications, the regulator will
protect itself from reverse battery connections, double-
battery jumps and up to +40V load dump transients.
The voltage regulator has both short-circuit and
thermal shutdown protection built-in.
Regarding the correlation between V
please refer to Figure 1-4 through 1-6. When the input
voltage (V
provide stable regulation, the output V
input down to approximately 3.5V, at which point the
regulator will turn off. This will allow microcontrollers
with internal POR circuits to generate a clean arming of
the Power-on Reset trip point. The MCP201 will then
monitor V
DS21730F-page 8
Note 1:
Legend: x = don’t care
TXD In
H
H
L
L
x
FAULT/SLPS
Internal Voltage Regulator
BAT
BAT
H
This mode does not conform to LIN bus
specification version 1.3, but might be
used for K-line applications.
L
RXD Out
) drops below the differential needed to
and turn on the regulator when V
H
H
L
L
x
FAULT / SLPS SLOPE
FAULT / SLPS TRUTH TABLE
SELECTION DURING POR
LIN Bus I/O
G
V
V
GND
GND
V
.
BAT
BAT
BAT
Slope Shaping
Alternate
BAT
Normal
REG
, V
REG
will track the
Override
Thermal
(1)
OFF
OFF
OFF
OFF
ON
and I
BAT
F
DD
, in
is
,
FAULT / SLPS Out
6.0V. The device will come up in either READY1 or
READY mode and will have to be transitioned to
Operational mode to re-enable data transmission.
In the start phase, V
(Figure 1-4) to initiate operation during power-up. In
Power-down mode, the V
The regulator has a thermal shutdown. If the thermal
protection circuit detects an overtemperature condition
caused by an overcurrent condition (Figure 1-6) of the
regulator, it will shut down.
The regulator has an overload current limiting. During
a short-circuit, V
3.5V, the regulator will turn off. After a thermal recovery
time, the V
short-circuit (V
switched back on. The MCP201 will come up in either
READY1 or READY mode and will have to be
transitioned to Operational mode to re-enable data
transmission.
The accuracy of the voltage regulator, when using a
pass transistor, will degrade due to the extra external
components needed. All performance characteristics
should be evaluated on every design.
Note:
Note:
H
H
L
L
L
REG
This pin is ‘0’ whenever the internal circuits
have detected a short or thermal excursion
and have disabled the LIN output driver.
Every time TX is toggled, a Fault condition
will occur for the length of time, depending
on the bus load. The Fault time is equal to
the propagation delay.
Bus shorted to battery
Bus recessive
Bus dominant
Bus shorted to ground
Thermal excursion
REG
REG
will be checked again. If there is no
is monitored. If V
> 3.5V), the regulator will be
© 2007 Microchip Technology Inc.
BAT
BAT
Comments
must be at least 6.0V
monitor will be turned off.
REG
is lower than