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MCP1703A Datasheet

Download or read online Microchip Technology MCP1703A 250 mA, 16V, Low Quiescent Current LDO Regulator pdf datasheet.



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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 V
= 2.8V
R
• 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)
• 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
• CO
Detectors
2
• 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
© 2012 Microchip Technology Inc.
MCP1703A
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 (V
= 2.8V). The output voltage tolerance
OUT
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
SOT-23A
2x3 DFN*
V
1
8
V
OUT
IN
NC
NC
2
7
EP
9
NC
3
6
NC
GND
5 NC
4
1
GND V
SOT-89
SOT-223
V
IN
1
1
2
3
V
GND
V
V
IN
IN
OUT
* Includes Exposed Thermal Pad (EP); see
V
IN
3
2
OUT
2
3
GND
V
OUT
Table
3-1.
DS25122A-page 1

Summary of Contents

Page 1

... The output voltage tolerance OUT 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 µ ...

Page 2

... MCP1703A Functional Block Diagrams V IN Overcurrent Overtemperature Typical Application Circuits Battery 1 µF Ceramic DS25122A-page 2 MCP1703A Error Amplifier V IN Voltage - Reference GND MCP1703A V OUT GND V OUT V OUT 3.3V I OUT OUT 1 µF Ceramic © 2012 Microchip Technology Inc. ...

Page 3

... 2.7V (whichever is greater); I DROPOUT(MAX ΔTemperature /(V R OUT-HIGH lowest voltage measured over the temperature range 2.7V, whichever is greater. OUT(MAX) DROPOUT(MAX MCP1703A Note 1, OUT(MAX) DROPOUT(MAX) Conditions V Note 1 µ 2.5V mA For V R 2.7V mA For V < 2.5V, V ...

Page 4

... MCP1703A DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise specified, all limits are established for mA µF (X7R µF (X7R), T LOAD OUT IN T (Note 7) of -40°C to 125°C. J Parameters Symbol Dropout Voltage V DROPOUT Note 1, Note 5 Output Delay Time T DELAY Output Noise ...

Page 5

... 90° FIGURE 2-5: Current. 3.0 2.5 - 45°C 25°C 2.0 1.5 V OUT V 1.0 IN 0°C 0.5 0 -45 FIGURE 2-6: Junction Temperature. MCP1703A 1 mA 25° 1.2V OUT 120 160 200 Load Current (mA) Ground Current vs. Load 2.5V OUT 3. 5.0V OUT 100 150 200 250 Load Current (mA) Ground Current vs ...

Page 6

... MCP1703A Note: Unless otherwise indicated: C OUT 2.7V, whichever is greater. IN OUT(MAX) DROPOUT(MAX) 1. 1.2V OUT LOAD 1.23 -45°C 0°C 1.22 1.21 1.20 90°C 25°C 1.19 1. Input Voltage (V) FIGURE 2-7: Output Voltage vs. Input Voltage. 2. 2.5V OUT 2.56 LOAD 130°C 2.54 2.52 2.50 2.48 0°C 25°C 2.46 2. Input Voltage (V) FIGURE 2-8: Output Voltage vs ...

Page 7

... FIGURE 2-16 0° 500 FIGURE 2-17: 800 700 600 500 400 300 200 0°C 100 0 0 FIGURE 2-18: Input Voltage. MCP1703A 1 mA 25° 600 2.5V OUT OUT 400 200 V OUT(AC) 0 -200 -400 1000 1500 2000 2500 Time (µS) Dynamic Line Response ...

Page 8

... MCP1703A Note: Unless otherwise indicated: C OUT 2.7V, whichever is greater. IN OUT(MAX) DROPOUT(MAX 3.45V IN OUT 200 mA OUT 0.60 0.40 0.20 0.00 -0.20 -0. 14V IN -0. -0.80 -1.00 -45 - Temperature (°C) FIGURE 2-19: Load Regulation vs. Temperature. 0. 2.5V 0.40 OUT V 3.65V 250 mA IN OUT 0.20 0.00 -0.20 -0.40 -0. -0.80 IN -1. 10V IN -1 ...

Page 9

... FIGURE 2-28: 10.00 1.00 0.10 0.01 0.01 100 1000 FIGURE 2-29 100 1000 FIGURE 2-30: MCP1703A 1 mA 25° 800 mV p-p INAC 250 mA OUT 0 100 1000 Frequency (KHz) PSRR vs. Frequency 5.0V ...

Page 10

... MCP1703A Note: Unless otherwise indicated: C OUT 2.7V, whichever is greater. IN OUT(MAX) DROPOUT(MAX) 1500 V 2.5V OUT 1000 Step 100µ to 100 mA 500 V OUT (ac) 0 -500 100 mA -1000 100 µA -1500 0 500 1000 1500 Time (µs) FIGURE 2-31: Dynamic Load Response. 1500 V 2.5V OUT 1000 Step 200 mA ...

Page 11

... PIN DESCRIPTIONS The descriptions of the pins are listed in TABLE 3-1: MCP1703A PIN FUNCTION TABLE 2x3 DFN SOT-223 SOT-23A 4 2,Tab 9 3.1 Ground Terminal (GND) Regulator ground. Tie GND to the negative side of the output and the negative side of the input capacitor. ...

Page 12

... The MCP1703A internal circuitry monitors the amount of current flowing through the P-Channel pass transis- tor. In the event of a short-circuit or excessive output current, the MCP1703A will turn off the P-Channel device for a short period, after which the LDO will attempt to restart. If the excessive current remains, the cycle will repeat itself ...

Page 13

... Li-Ion cell batteries. 5.1 Input The input of the MCP1703A is connected to the source of the P-Channel PMOS pass transistor. As with all LDO circuits, a relatively low source impedance (10Ω) is needed to prevent the input impedance from causing the LDO to become unstable ...

Page 14

... OUT 6.2 Power Calculations 6.2.1 POWER DISSIPATION The internal power dissipation of the MCP1703A is a function of input voltage, output voltage and output current. The power dissipation result of the quiescent current draw low insignificant (2.0 µ The following equation can be used to IN calculate the internal power dissipation of the LDO ...

Page 15

... D(MAX) 6.4 Voltage Reference ) x I OUT(MAX) The MCP1703A can be used not only as a regulator, but also as a low quiescent current voltage reference. In many microcontroller applications, the initial accuracy of the reference can be calibrated using production test equipment or by using a ratio measurement. When the initial accuracy is calibrated, the thermal stability and line regulation tolerance are the only errors introduced by the MCP1703A LDO ...

Page 16

... For some applications, there are pulsed load current events that may exceed the specified 250 mA maximum specification of the MCP1703A. The internal current limit of the MCP1703A will prevent high peak load demands from causing non-recoverable damage. The 250 mA rating is a maximum average continuous rating ...

Page 17

... Custom 33 3.3 Standard Options for 8-Lead DFN ( Voltage Symbol 1.2 ALV 1.5 ALW 1.8 ALX 2.5 ALY 2.8 MCP1703A Example: JG25 Example: PA1211 256 Example: 3.0 1703A 3.3 12E1211 4.0 256 5.0 Example: Voltage ALQ 3.0 211 3.3 25 4.0 5.0 — DS25122A-page 17 ...

Page 18

... MCP1703A DS25122A-page φ L © 2012 Microchip Technology Inc. ...

Page 19

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2012 Microchip Technology Inc. MCP1703A DS25122A-page 19 ...

Page 20

... MCP1703A DS25122A-page © 2012 Microchip Technology Inc. ...

Page 21

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2012 Microchip Technology Inc. MCP1703A DS25122A-page 21 ...

Page 22

... MCP1703A DS25122A-page φ © 2012 Microchip Technology Inc. ...

Page 23

... Microchip Technology Inc. MCP1703A DS25122A-page 23 ...

Page 24

... MCP1703A D N NOTE TOP VIEW A3 DS25122A-page EXPOSED PAD BOTTOM VIEW A NOTE NOTE © 2012 Microchip Technology Inc. ...

Page 25

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging © 2012 Microchip Technology Inc. MCP1703A DS25122A-page 25 ...

Page 26

... MCP1703A NOTES: DS25122A-page 26 © 2012 Microchip Technology Inc. ...

Page 27

... APPENDIX A: REVISION HISTORY Revision A (March 2012) Original Release of this Document. © 2012 Microchip Technology Inc. MCP1703A DS25122A-page 27 ...

Page 28

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO Device Tape Output Feature and Reel Voltage Code Device: MCP1703A: 250 mA, 16V Low Quiescent Current LDO Tape and Reel Tape and Reel Output Voltage 1.2V Standard” 1.5V Standard” 1.8V Standard” 2.5V “ ...

Page 29

... Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2012, Microchip Technology Incorporated, Printed in the U ...

Page 30

... Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-5778-366 Fax: 886-3-5770-955 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2012 Microchip Technology Inc. 11/29/11 ...

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