MCP1700
Low Quiescent Current LDO
Features General Description
1.6 A Typical Quiescent Current The MCP1700 is a family of CMOS low dropout (LDO)
voltage regulators that can deliver up to 250 mA of
Input Operating Voltage Range: 2.3V to 6.0V
current while consuming only 1.6A of quiescent
Output Voltage Range: 1.2V to 5.0V
current (typical). The input operating range is specified
250 mA Output Current for output voltages 2.5V
from 2.3V to 6.0V, making it an ideal choice for two and
200 mA Output Current for output voltages < 2.5V
three primary cell battery-powered applications, as well
Low Dropout (LDO) voltage
as single cell Li-Ion-powered applications.
- 178 mV typical @ 250 mA for V = 2.8V
OUT
The MCP1700 is capable of delivering 250 mA with
0.4% Typical Output Voltage Tolerance
only 178mV of input to output voltage differential
(V =2.8V). The output voltage tolerance of the
Standard Output Voltage Options:
OUT
MCP1700 is typically 0.4% at +25C and 3%
- 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V
maximum over the operating junction temperature
Stable with 1.0 F Ceramic Output capacitor
range of -40C to +125C.
Short Circuit Protection
Output voltages available for the MCP1700 range from
Overtemperature Protection
1.2V to 5.0V. The LDO output is stable when using only
1F output capacitance. Ceramic, tantalum or
Applications
aluminum electrolytic capacitors can all be used for
input and output. Overcurrent limit and overtemperature
Battery-powered Devices
shutdown provide a robust solution for any application.
Battery-powered Alarm Circuits
Package options include the SOT-23, SOT-89 and
Smoke Detectors
TO-92.
2
CO Detectors
Pagers and Cellular Phones
Package Types
Smart Battery Packs
3-Pin SOT-23 3-Pin SOT-89 3-Pin TO-92
Low Quiescent Current Voltage Reference
PDAs V V
IN IN
Digital Cameras MCP1700
3
Microcontroller Power 1 2 3
MCP1700
MCP1700
Related Literature 1 2
3
1
2
GND V V
AN765, Using Microchips Micropower LDOs, GND V IN OUT
OUT
GND V V
IN OUT
DS00765, Microchip Technology Inc., 2002
AN766, Pin-Compatible CMOS Upgrades to
BiPolar LDOs, DS00766,
Microchip Technology Inc., 2002
AN792, A Method to Determine How Much
Power a SOT23 Can Dissipate in an Application,
DS00792, Microchip Technology Inc., 2001
2007 Microchip Technology Inc. DS21826B-page 1MCP1700
Functional Block Diagrams
MCP1700
V V
IN OUT
Error Amplifier
+V
IN
Voltage
-
Reference
+
Over Current
Over Temperature
GND
Typical Application Circuits
MCP1700
V
IN
GND
(2.3V to 3.2V)
V
V
OUT
IN
1.8V
C
V
IN
OUT
1 F Ceramic
I
OUT
C
OUT
150 mA
1 F Ceramic
DS21826B-page 2 2007 Microchip Technology Inc.