MCP1725T-1202E/MC Microchip Technology, MCP1725T-1202E/MC Datasheet - Page 19

• Manufacturer Part Number: MCP1725T-1202E/MC
• Description: 500mA CMOS LDO, Vout=1.2V, Extended Temp Range 8 DFN 2X3mm T/R
• Manufacturer: Microchip Technology

Specifications of MCP1725T-1202E/MC

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.2V
• Voltage - Input: 2.3 ~ 6 V
• Voltage - Dropout (typical): 0.21V @ 500mA
• Number Of Regulators: 1
• Current - Output: 500mA (Min)
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

4.8
Dropout voltage is defined as the input-to-output
voltage differential at which the output voltage drops
2% below the nominal value that was measured with a
V
a very low dropout voltage specification of 210 mV
(typical) at 0.5A of output current. See Section 1.0
“Electrical Characteristics” for maximum dropout
voltage specifications.
The MCP1725 LDO operates across an input voltage
range of 2.3V to 6.0V and incorporates input Undervolt-
age Lockout (UVLO) circuitry that keeps the LDO
output voltage off until the input voltage reaches a
minimum of 2.18V (typical) on the rising edge of the
input voltage. As the input voltage falls, the LDO output
will remain on until the input voltage level reaches
2.04V (typical).
Since the MCP1725 LDO undervoltage lockout
activates at 2.04V as the input voltage is falling, the
dropout voltage specification does not apply for output
voltages that are less than 1.9V.
For high-current applications, voltage drops across the
PCB traces must be taken into account. The trace
resistances can cause significant voltage drops
between the input voltage source and the LDO. For
applications with input voltages near 2.3V, these PCB
trace voltage drops can sometimes lower the input
voltage enough to trigger a shutdown due to
undervoltage lockout.
© 2007 Microchip Technology Inc.
R
+ 0.6V differential applied. The MCP1725 LDO has
Dropout Voltage and
Undervoltage Lockout
4.9
The MCP1725 LDO has temperature-sensing circuitry
to prevent the junction temperature from exceeding
approximately 150
does reach 150
until the junction temperature cools to approximately
140
resume normal operation. If the internal power
dissipation continues to be excessive, the device will
again shut off. The junction temperature of the die is a
function of power dissipation, ambient temperature and
package thermal resistance. See Section 5.0 “Appli-
cation Circuits/Issues” for more information on LDO
power dissipation and junction temperature.
°
C, at which point the LDO output will automatically
Overtemperature Protection
°
C, the LDO output will be turned off
°
C. If the LDO junction temperature
MCP1725
DS22026B-page 19