Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsPMICsPMIC - system monitor Reset/power-on reset TO 92 3

 2001 Microchip Technology Inc. DS11184D-page 1

MCP120/130

FEATURES

• Holds microcontroller in reset until supply voltage

reaches stable operating level

• Resets microcontroller during power loss

• Precision monitoring of 3V, 3.3V and 5V systems

• 7 voltage trip points available

• Active low RESET

• Open drain output

• Internal pull-up resistor (5 kΩ) for MCP130

• Holds RESET

for 350 ms (typical)

• RESET to VCC = 1.0V

• Accuracy of ±125 mV for 5V systems and ±75 mV

for 3V systems over temperature

•45 µA typical operating current

• Temperature range:

- Industrial (I): -40°C to +85°C

DESCRIPTION

The Microchip Technology Inc. MCP120/130 is a volt-

age supervisory device designed to keep a microcon-

troller in reset until the system voltage has reached the

proper level and stabilized. It also operates as protec-

tion from brown-out conditions when the supply voltage

drops below a safe operating level. Both devices are

available with a choice of seven different trip voltages

and both have open drain outputs. The MCP130 has an

internal 5 kΩ pullup resistor. Both devices have active

low RESET

pins. The MCP120/130 will assert the

RESET

signal whenever the voltage on the VDD pin is

below the trip-point voltage.

PACKAGES

BLOCK DIAGRAM

VSS

VDD

RST

VSS

VDD

VSS

VDD

RST

VSS

VDD

RST

VSS

RST

VDD

TO-92 with

‘D’ Bondout

TO-92 WITH

‘F’ BONDOUT

TO-92 with

‘G’ Bondout

TO-92 with

‘H’ Bondout

SOT-23-3

MCP120

MCP130

MCP120

MCP130

MCP120

MCP130

RST

VDD

150mil SOIC

MCP120

MCP130

RST

Delay

Circuit

Output

Driver

RESET

VDD

Comparator

pull-up on

MCP130

Ω internal

Bandgap

Reference

only

Microcontroller Supervisory Circuit with Open Drain Output

Summary of content (16 pages)

PAGE 1
MCP120/130 Microcontroller Supervisory Circuit with Open Drain Output FEATURES PACKAGES • Holds microcontroller in reset until supply voltage reaches stable operating level • Resets microcontroller during power loss • Precision monitoring of 3V, 3.3V and 5V systems • 7 voltage trip points available • Active low RESET pin • Open drain output • Internal pull-up resistor (5 kΩ) for MCP130 • Holds RESET for 350 ms (typical) • RESET to VCC = 1.
PAGE 2
MCP120/130 1.0 ELECTRICAL CHARACTERISTICS 1.1 Maximum Ratings* *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. VDD...........................................................
PAGE 3
MCP120/130 VTRIP VDD tRPU tRPD RESET VOH VOH Figure 1-1: MCP120/130 Timing Diagram  2001 Microchip Technology Inc.
PAGE 4
MCP120/130 APPLICATIONS INFORMATION 2.1 The Need for Supervisory Circuits For many of today’s microcontroller applications, care must be taken to prevent low power conditions that can cause many different system problems.
PAGE 5
MCP120/130 Effect of Temperature on Timeout Period (tRPU) The timeout period (tRPU) determines how long the device remains in the reset condition. This is controlled by an internal RC timer and is effected by both VDD and temperature. The graph shown in Figure 2-3 shows typical response for different VDD values and temperatures. TIMEOUT PERIOD (tRPU) (ms) 700 600 1.002 NORMALIZED THRESHOLD* (VTRIP) 2.3 1.000 0.998 0.996 0.994 0.992 0.
PAGE 6
MCP120/130 3.0 PACKAGING INFORMATION 3.1 Package Marking Information 3-Lead Plastic Transistor Outline (TO-92) Example: XXXXXX XXXXXX XXXXXX MCP120 XXXXXX XXXXXX YWWNNN YWWNNN 8-Lead Plastic Small Outline (SOIC) Example: XXXXXXXX XXXXYYWW MCP120 XXXXYYWW NNN NNN 3-Lead Plastic Small Outline Transistor (SOT23) Example: XXNN PKNN SOT23 PARTS LABELING: The table below identifies the first 2 characters (XX) in the 4-character field (XXNN) for marking of the 3-Lead SOT23 package.
PAGE 7
MCP120/130 3.2 Package Detail Information 3-Lead Plastic Transistor Outline (TO) (TO-92) E1 D n 1 L 1 2 3 α B p c A R Units Dimension Limits n p β MIN INCHES* NOM MAX MILLIMETERS NOM 3 1.27 3.30 3.62 4.45 4.71 4.32 4.64 2.16 2.29 12.70 14.10 0.36 0.43 0.41 0.48 4 5 2 3 MIN Number of Pins 3 Pitch .050 Bottom to Package Flat A .130 .143 .155 Overall Width E1 .175 .186 .195 Overall Length D .170 .183 .195 Molded Package Radius R .085 .090 .095 Tip to Seating Plane L .500 .555 .
PAGE 8
MCP120/130 3-Lead Plastic Small Outline Transistor (TT) (SOT23) E E1 2 B p1 n D p 1 α c A φ β A2 A1 L Units Dimension Limits n p Number of Pins Pitch Outside lead pitch (basic) Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic MIN p1 A A2 A1 E E1 D L φ c B α β .035 .035 .000 .083 .047 .110 .
PAGE 9
MCP120/130 8-Lead Plastic Small Outline (SN) – Narrow, 150 mil (SOIC E E1 p D 2 B n 1 h α 45° c A2 A φ β L Units Dimension Limits n p Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic A A2 A1 E E1 D h L φ c B α β MIN .053 .052 .004 .228 .146 .189 .010 .
PAGE 10
MCP120/130 ON-LINE SUPPORT Microchip provides on-line support on the Microchip World Wide Web (WWW) site. The web site is used by Microchip as a means to make files and information easily available to customers. To view the site, the user must have access to the Internet and a web browser, such as Netscape or Microsoft Explorer. Files are also available for FTP download from our FTP site.
PAGE 11
MCP120/130 READER RESPONSE It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-7578. Please list the following information, and use this outline to provide us with your comments about this Data Sheet.
PAGE 12
MCP120/130 NOTES: DS11184D-page 12  2001 Microchip Technology Inc.
PAGE 13
MCP120/130 NOTES:  2001 Microchip Technology Inc.
PAGE 14
MCP120/130 PRODUCT IDENTIFICATION SYSTEM To order or to obtain information (e.g., on pricing or delivery), please refer to the factory or the listed sales offices. PART NO.
PAGE 15
MCP120/130 “All rights reserved. Copyright © 2001, Microchip Technology Incorporated, USA. Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by updates. No representation or warranty is given and no liability is assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise.
PAGE 16
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