TC2055-3.0VCTTR Microchip Technology, TC2055-3.0VCTTR Datasheet - Page 11

• Manufacturer Part Number: TC2055-3.0VCTTR
• Description: IC CMOS LDO 3.0V 100MA SOT23A-5
• Manufacturer: Microchip Technology

Specifications of TC2055-3.0VCTTR

• Regulator Topology: Positive Fixed
• Voltage - Output: 3V
• Voltage - Input: Up to 6V
• Voltage - Dropout (typical): 0.09V @ 100mA
• Number Of Regulators: 1
• Current - Output: 100mA (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: TC20553.0VCTTR

4.0
The TC2054, TC2055 and TC2186 are precision fixed
output voltage regulators. (If an adjustable version is
desired, refer to the TC1070/TC1071/TC1187 data
sheet (DS21353). Unlike bipolar regulators, the
TC2054, TC2055 and TC2186 supply current does not
increase with load current. In addition, V
stable and within regulation over the entire 0 mA to
maximum output current operating load range.
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
open-circuited.
FIGURE 4-1:
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
(typical) for a 5.0V regulator and 2.85V (typical) 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
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
The ERROR pin sink current is self-limiting to
approximately 18 mA.
© 2009 Microchip Technology Inc.
(to CMOS Logic or Tie
Shutdown Control
OUT
to V
, V
IN
4-2.
if unused)
IN
DETAILED DESCRIPTION
BATTERY
ERROR Open-Drain Output
or any other voltage less than (V
shows a typical application circuit.
OUT
1 µF
Figure
OUT
OUT
Processor RESET Signal
falls to zero volts, and ERROR is
if ERROR is used as a
C2 Required Only
GND
V
SHDN
rises above V
IN
regardless of the programmed
4-1, ERROR can be used as a
(See Text)
Typical Application Circuit.
TC2054
TC2055
TC2186
IH
, and shutdown (disabled)
ERROR
V
OUT
2
TH
). R
IL
OUT
. SHDN may be
IH
by V
OUT
1
V+
1
of the processor
falls to V
x C
can be tied to
1 µF
C
R
1MΩ
0.2 µF
C
1
1
2
HYS
OL
OUT
falls out of
2
IN
should be
BATTLOW
.
at 4.75V
V
or RESET
remains
+ 0.3V).
OUT
TH
, and
The
FIGURE 4-2:
4.2
A 1 µF (minimum) capacitor from V
required. The output capacitor should have an effective
series resistance of 0.01Ω. to 5Ω for V
0.05Ω. to 5Ω for V
aluminum electrolytic capacitors can be used. (Since
many aluminum electrolytic capacitors freeze at
approximately
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.
4.3
A 1 µF capacitor should be connected from V
if there is more than 10 inches of wire between the
regulator and this AC filter capacitor, or if a battery is
used as the power source. Aluminum electrolytic or
tantalum capacitors can be used (since many
aluminum
approximately -30°C, solid tantalum are recommended
for applications operating below -25°C). When
operating
supply-noise rejection and transient response can be
improved by increasing the value of the input and
output capacitors and employing passive filtering
techniques.
ERROR
V
V
V
OUT
V
TH
OL
IH
TC2054/2055/2186
Output Capacitor
Input Capacitor
from
electrolytic
-30°C,
OUT
sources
Error Output Operation.
< 2.5V. Ceramic, tantalum and
capacitors
solid
other
DS21663D-page 11
HYSTERESIS (V
OUT
tantalums
than
OUT
to ground is
freeze
= 2.5V, and
IN
batteries,
to GND
HYS
are
at
)