MCP1824T-5002E/OT Microchip Technology, MCP1824T-5002E/OT Datasheet - Page 18

• Manufacturer Part Number: MCP1824T-5002E/OT
• Description: IC LDO REG 300MA 5.0V SOT23-5
• Manufacturer: Microchip Technology

Specifications of MCP1824T-5002E/OT

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 6V
• Voltage - Dropout (typical): 0.2V @ 300mA
• Number Of Regulators: 1
• Current - Output: 300mA (Min)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Primary Input Voltage: 5.32V
• Output Voltage: 5V
• Dropout Voltage Vdo: 200mV
• No. Of Pins: 5
• Output Current: 300mA
• Voltage Regulator Case Style: SOT-23
• Operating Temperature Range: -40°C To +125°C
• Svhc: No
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 6 V
• Output Type: Fixed
• Dropout Voltage (max): 0.32 V at 300 mA
• Line Regulation: 0.05 % / V
• Load Regulation: 0.5 %
• Voltage Regulation Accuracy: 2.5 %
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Output Voltage Fixed: 5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MCP1824T-5002E/OTTR

MCP1824/MCP1824S
4.0
The MCP1824/MCP1824S is a 300 mA output current,
Low Dropout (LDO) voltage regulator. The low dropout
voltage of 200 mV typical at 300 mA of current makes
it ideal for battery-powered applications. The input
voltage range is 2.1V to 6.0V. Unlike other high output
current LDOs, the MCP1824/MCP1824S only draws a
maximum of 220 µA of quiescent current. The
MCP1824 adds a shutdown control input pin and a
power good output pin. The two output voltage options
are fixed or adjustable. The adjustable option is
available on the MCP1824 devices. The adjustable out-
put voltage is set using two external resistors.
4.1
The MCP1824 LDO is available with either a fixed
output voltage or an adjustable output voltage. The
output voltage range is 0.8V to 5.0V for either version.
The MCP1824S LDO is available as a fixed voltage
device.
4.1.1
The adjustable version of the MCP1824 uses the ADJ
pin to get the output voltage feedback for output voltage
regulation. This allows the user to set the output volt-
age of the device with two external resistors. The nom-
inal voltage for ADJ is 0.41V.
Figure 4-1
MCP1824. Resistors R
divider network necessary to set the output voltage.
With this configuration,
equation for setting V
EQUATION 4-1:
FIGURE 4-1:
Voltage Application Circuit.
DS22070A-page 18
Off
Where:
On
V
V
OUT
ADJ
DEVICE OVERVIEW
LDO Output Voltage
SHDN
V
IN
ADJUST INPUT
shows the adjustable version of the
4.7 µF
C
1
=
=
V
OUT
MCP1824-ADJ
1
LDO Output Voltage
ADJ Pin Voltage
(typically 0.41V)
2
OUT
=
CALCULATING V
Typical Adjustable Output
3 4 5
GND
V
1
.
Equation 4-1
ADJ
and R
⎛
ADJ
R
------------------
1
R
+
2
2
R
form the resistor
2
⎞
⎠
represents the
R
R
V
2
1
OUT
OUT
C2
1 µF
The allowable resistance value range for resistor R
from 10 kΩ to 200 kΩ. Solving
yields
EQUATION 4-2:
4.2
The MCP1824/MCP1824S LDO is tested and ensured
to supply a minimum of 300 mA of output current. The
MCP1824/MCP1824S has no minimum output load, so
the output load current can go to 0 mA and the LDO will
continue to regulate the output voltage to within
tolerance.
The MCP1824/MCP1824S also incorporates an output
current limit. If the output voltage falls below 0.7V due
to an overload condition (usually represents a shorted
load condition), the output current is limited to 720 mA
(typical). If the overload condition is a soft overload, the
MCP1824/MCP1824S will supply higher load currents
of up to 900 mA. The MCP1824/MCP1824S should not
be operated in this condition continuously as it may
result in failure of the device. However, this does allow
for device usage in applications that have higher
pulsed load currents having an average output current
value of 300 mA or less.
Output overload conditions may also result in an over-
temperature shutdown of the device. If the junction
temperature rises above 150°C (typical), the LDO will
shut down the output voltage. See Section 4.8 “Over-
temperature Protection” for more information on
overtemperature shutdown.
Where:
V
V
Equation
OUT
ADJ
Output Current and Current
Limiting
=
=
4-2.
R
1
LDO Output Voltage
ADJ Pin Voltage
(typically 0.41V)
=
CALCULATING ADJ PIN
RESISTOR VALUES
R
2
2007 Microchip Technology Inc.
⎛
V
------------- 1
V
OUT
ADJ
–
Equation 4-1
⎞
⎠
for R
2
is
1