TC1186-2.7VCT713 Microchip Technology, TC1186-2.7VCT713 Datasheet - Page 9

• Manufacturer Part Number: TC1186-2.7VCT713
• Description: IC CMOS LDO 2.7V 150MA SOT23A-5
• Manufacturer: Microchip Technology

Specifications of TC1186-2.7VCT713

• Regulator Topology: Positive Fixed
• Voltage - Output: 2.7V
• Voltage - Input: Up to 6V
• Voltage - Dropout (typical): 0.27V @ 150mA
• Number Of Regulators: 1
• Current - Output: 150mA (Min)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Other names: TC11862.7VCT713

4.0
The TC1054, TC1055 and TC1186 are precision fixed
output voltage regulators (If an adjustable version is
desired, please see the TC1070/TC1071/TC1187 data
sheet (DS21353)). Unlike bipolar regulators, the
TC1054, TC1055 and TC1186 supply current does not
increase with load current.
Figure 4-1
regulator is enabled any time the shutdown input
(SHDN) is at or above V
when SHDN is at or below V
controlled by a CMOS logic gate or I/O port of a
microcontroller. If the SHDN input is not required, it
should be connected directly to the input supply. While
in shutdown, supply current decreases to 0.05 µA
(typical), V
circuited.
FIGURE 4-1:
© 2007 Microchip Technology Inc.
(to CMOS Logic or Tie
Shutdown Control
to V
IN
if unused)
DETAILED DESCRIPTION
+
Battery
shows a typical application circuit, where the
OUT
Processor RESET Signal
falls to zero volts, and ERROR is open-
+
if ERROR is used as a
1 µF
C
2
Required Only
(See Text)
SHDN
GND
V
IN
Typical Application Circuit.
TC1054
TC1055
TC1186
IH
ERROR
, and shutdown (disabled)
V
OUT
IL
. SHDN may be
V+
+
0.2 µF
C
1MW
R
1 µF
C
2
1
1
V
OUT
BATTLOW
or RESET
TC1054/TC1055/TC1186
4.1
ERROR is driven low whenever V
regulation by more than -5% (typical). This condition
may be caused by low input voltage, output current
limiting or thermal limiting. The ERROR threshold is 5%
below rated V
output voltage value (e.g. ERROR = V
for a 5.0V regulator and 2.85V (typ.) for a 3.0V
regulator). ERROR output operation is shown in
Figure
Note that ERROR is active when V
inactive when V
As shown in
a battery low flag or as a processor RESET signal (with
the addition of timing capacitor C
chosen to maintain ERROR below V
RESET input for at least 200 ms to allow time for the
system to stabilize. Pull-up resistor R
V
FIGURE 4-2:
4.2
A 1 µF (minimum) capacitor from V
recommended. The output capacitor should have an
effective series resistance greater than 0.1Ω and less
than 5.0Ω, with a resonant frequency above 1 MHz. A
1 µF capacitor should be connected from V
there is more than 10 inches of wire between the
regulator and the AC filter capacitor or if a battery is
used as the power source. Aluminum electrolytic or
tantalum capacitor types can be used (Since many
aluminum electrolytic capacitors freeze at approxi-
mately -30°C, solid tantalums are recommended for
applications operating below -25°C.). When operating
from sources other than batteries, supply-noise
rejection and transient response can be improved by
increasing the value of the input and output capacitors
and employing passive filtering techniques.
OUT
ERROR
V
OUT
V
V
V
, V
TH
OL
IH
4-2.
IN
ERROR Open-Drain Output
Output Capacitor
or any other voltage less than (V
Figure
OUT
OUT
, regardless of the programmed
4-1, ERROR can be used either as
rises above V
Error Output Operation.
t
DELAY
2
TH
). R
OUT
IH
HYSTERESIS (V
OUT
by V
OUT
OL
DS21350D-page 9
1
1
of the processor
falls to V
x C
can be tied to
at 4.75V (typ.)
HYS
to ground is
falls out of
2
IN
IN
should be
to GND if
.
+ 0.3V).
TH
H
and
)