TC1055-3.3VCT713 Microchip Technology, TC1055-3.3VCT713 Datasheet - Page 10
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TC1055-3.3VCT713
Manufacturer Part Number
TC1055-3.3VCT713
Description
Voltage Regulator
Manufacturer
Microchip Technology
Specifications of TC1055-3.3VCT713
Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 6V
Voltage - Dropout (typical)
0.18V @ 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
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
6 V
Output Voltage
3.3 V
Output Type
Fixed
Dropout Voltage (max)
250 / 400 mV
Output Current
100 mA
Line Regulation
0.05 %
Load Regulation
0.5 %
Voltage Regulation Accuracy
0.5 %
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
158-2013-2
158-2013-2
TC10553.3VCT713TR
158-2013-2
TC10553.3VCT713TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TC1055-3.3VCT713
Manufacturer:
MICROCHIP
Quantity:
45 000
Part Number:
TC1055-3.3VCT713
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
TC1054/TC1055/TC1186
5.0
5.1
Integrated thermal protection circuitry shuts the
regulator off when die temperature exceeds 160°C.
The regulator remains off until the die temperature
drops to approximately 150°C.
5.2
The amount of power the regulator dissipates is
primarily a function of input voltage, output voltage and
output current. The following equation is used to
calculate worst case actual power dissipation:
EQUATION 5-1:
The
(Equation 5-2) is a function of the maximum ambient
temperature (T
temperature (T
junction-to-air (
a
EQUATION 5-2:
DS21350C-page 10
JA
I
Where:
LOAD
V
V
OUT
of approximately 220°C/Watt.
IN
maximum
Where all terms are previously defined.
THERMAL CONSIDERATIONS
Thermal Shutdown
Power Dissipation
MAX
MAX
P
P
MIN
D
D
= Worst case actual power dissipation
= Maximum voltage on V
= Minimum regulator output voltage
= Maximum output (load) current
P
DMAX
J
V
A
MAX
JA
INMAX
MAX
). The 5-Pin SOT-23A package has
) and the thermal resistance from
), the maximum allowable die
allowable
=
–
------------------------------------------- -
T
V
JMAX
OUTMIN
–
JA
T
power
AMAX
I
LOA DMAX
IN
dissipation
Equation 5-1 can be used in conjunction with
Equation 5-2 to ensure regulator thermal operation is
within limits.
For example:
Actual power dissipation:
Maximum allowable power dissipation:
In this example, the TC1054 dissipates a maximum of
20.7 mW; below the allowable limit of 318 mW. In a
similar manner, Equation 5-1 and Equation 5-2 can be
used to calculate maximum current and/or input
voltage limits.
5.3
The primary path of heat conduction out of the package
is via the package leads. Therefore, layouts having a
ground plane, wide traces at the pads and wide power
supply bus lines combine to lower
increase the maximum allowable power dissipation
limit.
Given:
V
V
I
T
T
Find:
LOAD
A
J
IN
OUT
MAX
MAX
MAX
MIN
MAX
P
D
Layout Considerations
=
=
20.7mW
V
= 3.0V +5%
= 2.7V – 2.5%
= 40 mA
= +125°C
= +55°C
1.
2.
P
INMAX
3.0
DMAX
Actual power dissipation
Maximum allowable dissipation
1.05
–
=
=
=
V
OUTMIN
------------------------------------------- -
-------------------------
318mW
–
T
125 55
2003 Microchip Technology Inc.
JMAX
220
2.7
–
–
JA
I
0.975
LO ADMA X
T
AMAX
JA
40
and, therefore,
10
-3