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MCP1754

High Performance LDO



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MCP1754 pdf
MCP1754/MCP1754S
150 mA, 16V, High Performance LDO
Features
• High PSRR: >70 dB @ 1 kHz typical
• 56.0 µA Typical Quiescent Current
• Input Operating Voltage Range: 3.6V to16.0V
• 150 mA Output Current for All Output Voltages
• Low Drop Out Voltage, 300 mV Typical @ 150 mA
• 0.4% Typical Output Voltage Tolerance
• Standard Output Voltage Options (1.8V, 2.5V,
2.8V, 3.0V, 3.3V, 4.0V, 5.0V)
• Output Voltage Range 1.8V to 5.5V in 0.1V
Increments (tighter increments also possible per
design)
• Output Voltage Tolerances of ±2.0% Over Entire
Temperature Range
• Stable with Minimum 1.0 µF Output Capacitance
• Power Good Output
• Shutdown Input
• True Current Foldback Protection
• Short-Circuit Protection
• Overtemperature Protection
Applications
• Battery-powered Devices
• Battery-powered Alarm Circuits
• Smoke Detectors
• CO2 Detectors
• Pagers and Cellular Phones
• Smart Battery Packs
• PDAs
• Digital Cameras
• Microcontroller Power
• Consumer Products
• Battery-powered Data Loggers
Related Literature
• AN765, “Using Microchip’s Micropower LDOs”,
DS00765, Microchip Technology Inc., 2007
• AN766, “Pin-Compatible CMOS Upgrades to
BiPolar LDOs”, DS00766,
Microchip Technology Inc., 2003
• AN792, “A Method to Determine How Much
Power a SOT23 Can Dissipate in an Application”,
DS00792, Microchip Technology Inc., 2001
Description
The MCP1754/MCP1754S is a family of CMOS low
dropout (LDO) voltage regulators that can deliver up to
150 mA of current while consuming only 56.0 µA of
quiescent current (typical). The input operating range is
specified from 3.6V to 16.0V, making it an ideal choice
for four to six primary cell battery-powered applications,
12V mobile applications and one- to three-cell Li-Ion-
powered applications.
The MCP1754/MCP1754S is capable of delivering
150 mA with only 300 mV (typical) of input to output
voltage differential. The output voltage tolerance of the
MCP1754/MCP1754S is typically ±0.4% at +25°C and
±2.0% maximum over the operating junction
temperature range of -40°C to +125°C. Line regulation
is ±0.01% typical at +25°C.
Output voltages available for the MCP1754/MCP1754S
range from 1.8V to 5.5V. The LDO output is stable when
using only 1 µF of output capacitance. Ceramic,
tantalum or aluminum electrolytic capacitors may all be
used for input and output. Overcurrent limit and
overtemperature shutdown provide a robust solution for
any application.
The MCP1754/MCP1754S family introduces a true
current foldback feature. When the load impedance
decreases beyond the MCP1754/MCP1754S load
rating, the output current and voltage will gracefully
foldback towards 30 mA at about 0V output. When the
load impedance decreases and returns to the rated
load, the MCP1754/MCP1754S will follow the same
foldback curve as the device comes out of current
foldback.
Package options for the MCP1754S include the SOT-
23A, SOT-89-3, SOT-223-3 and 2x3 DFN-8.
Package options for the MCP1754 include the SOT-23-
5, SOT-223-5, and 2x3 DFN-8.
© 2011 Microchip Technology Inc.
DS22276A-page 1



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MCP1754 pdf
MCP1754/MCP1754S
Package Types - MCP1754S
3-Pin SOT-23A
3-Pin SOT-89
VIN GND
32
12
GND VOUT
123
VIN GND VOUT
SOT-223-3
GND
4
8-Lead 2X3 DFN(*)
VOUT 1
8 VIN
NC 2 EP 7 NC
NC 3 9 6 NC
1 23
GND 4
5 GND
VIN GND VOUT
Tab will be connected to GND
(Note: The 3-lead SOT-223 (DB) is not a
standard package for output voltages
below 3.0V)
* Includes Exposed Thermal Pad (EP); see Table 3-2.
Package Types - MCP1754
SOT23-5
SOT-223-5
8-Lead 2X3 DFN(*)
54
1 23
PIN FUNCTION
1 VIN
2 GND
3 /SHDN
4 PWRGD
5 VOUT
3
12 3 4 5
PIN FUNCTION
1 /SHDN
2 VIN
3 GND
4 VOUT
5 PWRGD
VOUT 1
8 VIN
PWRGD 2 EP 7 NC
NC 3 9 6 NC
GND 4
5 SHDN
Tab will be connected to GND
* Includes Exposed Thermal Pad (EP); see Table 3-1.
DS22276A-page 2
© 2011 Microchip Technology Inc.



Part Number MCP1754
Description High Performance LDO
Maker Microchip - Microchip
Total Page 42 Pages
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