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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1703A Datasheet

Low Quiescent Current LDO Regulator

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MCP1703A pdf
MCP1703A
250 mA, 16V, Low Quiescent Current LDO Regulator
Features:
• Reduced Ground Current During Dropout
• Faster Startup Time
• 2.0 µA Typical Quiescent Current
• Input Operating Voltage Range: 2.7V to16.0V
• 250 mA Output Current for Output Voltages 2.5V
• 200 mA Output Current for Output Voltages < 2.5V
• Low Dropout Voltage, 625 mV Typical @ 250 mA
for VR = 2.8V
• 0.4% Typical Output Voltage Tolerance
• Standard Output Voltage Options:
- 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V,
5.0V
• Output Voltage Range: 1.2V to 5.5V in 0.1V
Increments (50 mV increments available upon
request)
• A/D Friendly Voltage Options: 2.05V, 3.07V, 4.1V
• Stable with 1.0 µF to 22 µF Ceramic Output
Capacitance
• Short-Circuit Protection
• Overtemperature Protection
Applications:
• Battery-Powered Devices
• Battery-Powered Alarm Circuits
• Smoke Detectors
• CO2 Detectors
• Pagers and Cellular Phones
• Smart Battery Packs
• Low Quiescent Current Voltage Reference
• PDAs
• Digital Cameras
• Microcontroller Power
• Solar-Powered Instruments
• Consumer Products
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 MCP1703A is an improved version of the
MCP1703 low dropout (LDO) voltage regulator that can
deliver up to 250 mA of current while consuming only
2.0 µA of quiescent current (typical). The input
operating range is specified from 2.7V to 16.0V, making
it an ideal choice for two to six primary cell battery-
powered applications, 9V alkaline and one or two-cell
Li-Ion-powered applications.
The MCP1703A is capable of delivering 250 mA with
only 625 mV (typical) of input to output voltage
differential (VOUT = 2.8V). The output voltage tolerance
of the MCP1703A is typically ±0.4% at +25°C and ±3%
maximum over the operating junction temperature
range of -40°C to +125°C. Line regulation is ±0.1%
typical at +25°C.
Output voltages available for the MCP1703A range
from 1.2V to 5.5V. The LDO output is stable when using
only 1 µF of output capacitance. Ceramic, tantalum or
aluminum electrolytic capacitors can all be used for
input and output. Overcurrent limit and overtemperature
shutdown provide a robust solution for any application.
Package options include the SOT-223-3, SOT-23A,
2x3 DFN-8 and SOT-89-3.
Package Types
2x3 DFN*
VOUT 1
8 VIN
NC 2 EP 7 NC
NC 3 9 6 NC
GND 4
5 NC
SOT-89
VIN
SOT-23A
VIN
3
12
GND VOUT
SOT-223
123
GND VIN VOUT
1 23
VIN GND VOUT
* Includes Exposed Thermal Pad (EP); see Table 3-1.
2012-2013 Microchip Technology Inc.
DS20005122B-page 1



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1703A Datasheet

Low Quiescent Current LDO Regulator

No Preview Available !

MCP1703A pdf
MCP1703A
Functional Block Diagrams
VIN
MCP1703A
Error Amplifier
Voltage
Reference
+VIN
-
+
Overcurrent
Overtemperature
VOUT
GND
Typical Application Circuits
9V
Battery
VIN
+ CIN
1 µF Ceramic
MCP1703A
VOUT
VIN VIN
GND
VOUT
3.3V
COUT
1 µF Ceramic
IOUT
50 mA
DS20005122B-page 2
2012-2013 Microchip Technology Inc.



  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP1703A Datasheet

Low Quiescent Current LDO Regulator

No Preview Available !

MCP1703A pdf
MCP1703A
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD..................................................................................+18V
All inputs and outputs w.r.t. .............(VSS-0.3V) to (VIN+0.3V)
Peak Output Current ...................................................500 mA
Storage temperature .....................................-65°C to +150°C
Maximum Junction Temperature ................................. +150°C
ESD protection on all pins (HBM; MM) ............. ≥ 4 kV; 400V
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits are established for VIN = VOUT(MAX) + VDROPOUT(MAX), Note 1,
ILOAD = 1 mA, COUT = 1 µF (X7R), CIN = 1 µF (X7R), TA = +25°C. Boldface type applies for junction temperatures,
TJ (Note 7) of -40°C to +125°C.
Parameters
Symbol Min Typ Max Units
Conditions
Input / Output Characteristics
Input Operating Voltage
VIN 2.7 16.0 V Note 1
Input Quiescent Current
Iq — 2.0 5 µA IL = 0 mA
Maximum Output Current
IOUT
250
— mA For VR 2.5V
50 100 — mA For VR < 2.5V, VIN 2.7V
100 130 — mA For VR < 2.5V, VIN 2.95V
150 200 — mA For VR < 2.5V, VIN 3.2V
200 230 — mA For VR < 2.5V, VIN 3.45V
Output Short Circuit Current
IOUT_SC
400
mA VIN = VIN(MIN) (Note 1),
VOUT = GND,
Current (average current) measured
10 ms after short is applied.
Output Voltage Regulation
VOUT VR-3.0% VR±0.4% VR+3.0% V Note 2
VR-2.0% VR±0.4% VR+2.0%
V
VR-1.0% VR±0.4% VR+1.0% V 1% Custom
VOUT Temperature Coefficient TCVOUT
65
— ppm/°C Note 3
Line Regulation
DVOUT/
(VOUTxΔVIN)
-0.3
±0.1
+0.3
%/V
(VOUT(MAX) + VDROPOUT(MAX)) VIN
16V, Note 1
Load Regulation
ΔVOUT/VOUT
-2.5
±1.0
+2.5
% IL = 1.0 mA to 250 mA for VR 2.5V
IL = 1.0 mA to 200 mA for VR < 2.5V
VIN = 3.65V, Note 4
Note 1:
2:
3:
4:
The minimum VIN must meet two conditions: VIN 2.7V and VIN (VOUT(MAX) + VDROPOUT(MAX)).
VR is the nominal regulator output voltage. For example: VR = 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V or 5.0V. The
TinCpVutOvUoTlt=ag(eVOVUINT-=HIVGHOU-TV(MOAUXT)-L+OWVD) RxO1P0O6U/(TV(MRAxXΔ) Toer mVipINer=at2u.r7eV),
(whichever
VOUT-HIGH
is greater); IOUT = 100 µA.
= highest voltage measured
over
the
temperature range. VOUT-LOW = lowest voltage measured over the temperature range.
Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Changes in output
voltage due to heating effects are determined using thermal regulation specification TCVOUT.
5: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its measured
value with an applied input voltage of VOUT(MAX) + VDROPOUT(MAX) or 2.7V, whichever is greater.
6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction
temperature and the thermal resistance from junction to air (i.e., TA, TJ, qJA). Exceeding the maximum allowable power
dissipation will cause the device operating junction temperature to exceed the maximum 150°C rating. Sustained
junction temperatures above 150°C can impact the device reliability.
7: The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the
desired junction temperature. The test time is small enough such that the rise in the junction temperature over the
ambient temperature is not significant.
2012-2013 Microchip Technology Inc.
DS20005122B-page 3




Part Number MCP1703A
Description Low Quiescent Current LDO Regulator
Maker Microchip
Total Page 30 Pages
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