NCP502SN50T1G ON Semiconductor, NCP502SN50T1G Datasheet - Page 7

• Manufacturer Part Number: NCP502SN50T1G
• Description: IC REG LDO 80MA 5.0V SOT23-5
• Manufacturer: ON Semiconductor

Specifications of NCP502SN50T1G

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 12V
• Voltage - Dropout (typical): 0.6V @ 80mA
• Number Of Regulators: 1
• Current - Output: 180mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Other names: NCP502SN50T1G; NCP502SN50T1GOSTR

shown in Figure 1, front page.
Input Decoupling (C1)
recommended and should be connected close to the
NCP502/A package. Higher values and lower ESR will
improve the overall line transient response. If large line or
load transients are not expected, then it is possible to operate
the regulator without the use of a capacitor.
TDK capacitor: C2012X5R1C105K, or C1608X5R1A105K
Output Decoupling (C2)
any specific Equivalent Series Resistance (ESR) or a
minimum output current. Capacitors exhibiting ESRs
ranging from a few mW up to 5.0 W can thus safely be used.
The minimum decoupling value is 1.0 mF and can be
augmented to fulfill stringent load transient requirements.
The regulator accepts ceramic chip capacitors as well as
tantalum devices. Larger values improve noise rejection and
load regulation transient response.
TDK capacitor: C2012X5R1C105K, C1608X5R1A105K,
or C3216X7R1C105K
Enable Operation
and turn off the regulator when pulled low. These limits of
threshold are covered in the electrical specification section
of this data sheet. If the enable is not used then the pin should
be connected to V
Hints
wide. When the impedance of these lines is high, there is a
A typical application circuit for the NCP502/A series is
A 1.0 mF capacitor either ceramic or tantalum is
The NCP502/A is a stable regulator and does not require
The enable pin will turn on the regulator when pulled high
Please be sure the Vin and GND lines are sufficiently
in
.
APPLICATIONS INFORMATION
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7
chance to pick up noise or cause the regulator to
malfunction.
as close as possible to the circuit, and make leads as short as
possible.
Thermal
become necessary to provide some thermal relief. The
maximum power dissipation supported by the device is
dependent upon board design and layout. Mounting pad
configuration on the PCB, the board material and also the
ambient temperature effect the rate of temperature rise for
the part. This is stating that when the NCP502/A has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
dissipation applications.
given by:
maximum 125°C, then the NCP502/A can dissipate up to
250 mW @ 25°C.
from the following equation:
current from the data sheet is 40 mA. For an NCP502/A
(3.0 V), the maximum input voltage will then be 6.12 V.
Set external components, especially the output capacitor,
As power across the NCP502/A increases, it might
The maximum dissipation the package can handle is
If junction temperature is not allowed above the
The power dissipated by the NCP502/A can be calculated
or
If an 80 mA output current is needed then the ground
P tot + V in * I gnd (I out ) ) [ V in * V out ] * I out
V inMAX +
PD +
T J(max) *T A
P tot ) V out * I out
I gnd ) I out
R qJA