TC1185-3.0VCT713 Microchip Technology, TC1185-3.0VCT713 Datasheet - Page 13

• Manufacturer Part Number: TC1185-3.0VCT713
• Description: IC CMOS LDO 3.0V 150MA SOT23A-5
• Manufacturer: Microchip Technology

Specifications of TC1185-3.0VCT713

• Package / Case: SOT-23-5, SC-74A, SOT-25
• Regulator Topology: Positive Fixed
• Voltage - Output: 3V
• 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
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 6 V
• Output Voltage: 3 V
• Output Type: Fixed
• Dropout Voltage (max): 400 mV
• Output Current: 150 mA
• Line Regulation: 0.05 %
• Load Regulation: 0.5 %
• Voltage Regulation Accuracy: 2.5 %
• 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: TC1185-3.0VCT713; TC11853.0VCT713; TC11853.0VCT713RTR; TC11853.0VCT713RTR; TC11853.0VCT713TR

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 and output voltage, and
output current. The following equation is used to
calculate worst-case actual power dissipation:
EQUATION 5-1:
The
(Equation
temperature (T
temperature (T
junction-to-air (θ
θ
EQUATION 5-2:
© 2007 Microchip Technology Inc.
Where:
JA
I
LOADMAX
V
of approximately 220°C/Watt.
V
OUTMIN
INMAX
maximum
Where all terms are previously defined.
P
THERMAL CONSIDERATIONS
Thermal Shutdown
Power Dissipation
P
5-2) is a function of the maximum ambient
D
D
≈
= Worst-case actual power
= Maximum voltage on V
= Minimum regulator output voltage
= Maximum output (load) current
P
(
DMAX
V
J
A
MAX
JA
dissipation
INMAX
MAX
). The 5-pin SOT-23 package has a
) and the thermal resistance from
), the maximum allowable die
allowable
=
–
(
------------------------------------------- -
T
V
JMAX
OUTMIN
θ
–
JA
T
)I
power
AMAX
LOADMAX
IN
)
dissipation
TC1014/TC1015/TC1185
Equation 5-1
Equation 5-2
within limits. For example:
Given:
Find:
1.
2.
Actual power dissipation:
P
Maximum allowable power dissipation:
In this example, the TC1014 dissipates a maximum of
26.7 mW below the allowable limit of 318 mW. In a
similar manner,
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 θ
increase the maximum allowable power dissipation
limit.
D
I
LOAD
V
= [(3.0 x 1.1) – (2.7 x .975)]40 x 10
= 26.7 mW
≈ (V
OUT
V
Actual power dissipation
Maximum allowable dissipation
T
T
IN
A
J
MAX
MAX
MAX
MAX
IN
MIN
Layout Considerations
MAX
– V
=
=
=
=
=
P
to ensure regulator thermal operation is
can be used in conjunction with
DMAX
Equation 5-1
OUT
3.0V +10%
2.7V – 2.5%
40 mA
125°C
55°C
MIN
=
=
=
)I
(
------------------------------------------- -
318 mW
(
-------------------------
LOAD
T
125 55
JMAX
220
–
MAX
and
θ
–
JA
)
T
Equation 5-2
AMAX
DS21335E-page 13
JA
–3
)
and therefore
can be