PT7M1818-10TE datasheet, PDF - EEWORLD Datasheet

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PT7M1818-10TE: DescriptionPower Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN; CategoryPower/power management The power supply circuit; File Size257KB，6 Pages; ManufacturerDiodes Incorporated; Environmental Compliance

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PT7M1818-10TE Overview

Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN

PT7M1818-10TE Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Diodes Incorporated
package instruction	TSSOP, TO-236
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	RESET THRESHOLD VOLTAGE IS 2.9V
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G3
length	2.92 mm
Number of channels	1
Number of functions	1
Number of terminals	3
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TO-236
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
power supply	1/5.5 V
Certification status	Not Qualified
Maximum seat height	1.12 mm
Maximum supply current (Isup)	0.012 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1 V
Nominal supply voltage (Vsup)	3 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
width	1.3 mm

PT7M1818-10TE Preview

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PT7M1818/1813

Supervisory Circuit

Features



Highly accurate:

1.5%

(25°

Accurate power monitoring: 2.5V, 2.9V, 3.0V

(PT7M1818), and 4.1, 4.3, 4.6V (PT7M1813)

Operating voltage range: 1.0V ~ 5.5V

Operating temperature range: -40° to + 85°

Detect voltage temperature characteristics:

2.5% 

TYP

Efficient open-drain output with internal 5k pull-up

resistor

Maintains reset for 200ms after V

returns to an in-

tolerance condition

Description

The series are designed to monitor power supplies in µ

and digital systems. It provides excellent circuit

reliability and low cost by eliminating external

components and adjustments.

This device performs a single function: it asserts a reset

signal whenever the V

supply voltage falls below a

preset threshold. Reset remains asserted for 200ms after

has risen above the reset threshold.

PT7M1818/1813 are bidirectional output, allowing it to

be directly connected to µ with bidirectional reset

inputs.

Pin Configuration

PT7M1818/1813

RST

GND

VCC

SOT23-3

Pin Description

Name

Type

Description

Reset Output and Pushbutton Input:

RST is asserted when V

drops below voltage threshold

TH-

. Active low. When other devices pull RST low, the reset condition occurs and will remain a

reset timeout period after the external signal is off.

Ground

Supply Voltage.

RST

GND

I/O

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Supervisory Circuit

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Maximum Ratings

Storage Temperature ............................................................-65

C to +150

Ambient Temperature with Power Applied.......................... -40

C to +85

Supply Voltage to Ground Potential (Vcc to GND) ..............-0.3V to +7.0V

DC Input Voltage (All inputs except Vcc and GND)......-0.3V to V

+0.3V

DC Output Current (All outputs) ..........................................................30mA

Power Dissipation .......................................... 320mW (Depend on package)

Note:

Stresses greater than 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 these or any other

conditions above those indicated in the operational

sections of this specification is not implied. Exposure

to absolute maximum rating conditions for extended

periods may affect reliability.

DC Electrical Characteristics

= -40~85º unless otherwise noted. Typical values are at T

= +25º

Description

Supply Voltage

Supply Current

Sym.

= 5.5V. No load.

= 3.6V. No load.

+25C

Voltage Threshold

TH-

-40C~85C

Hysteresis

HYS

TH+

- V

TH-*

= 8mA, V

= 5V

Output

Driving

Output low

= 4mA, V

= 3V

= -50µ V

= 1V

Internal pull-up resistor

TH-

)

0.985

TH-

)

0.975

TH-

)

1.015

TH-

)

1.025

0.4

0.3

0.09

µA

Test Conditions

Min

1.0

Typ

Max

5.5

Unit

µA

3.75

6.25

k

RST

Note:

TH-

is voltage threshold when V

falls from high to low. V

TH+

is voltage threshold when V

rises from low to high.

2014-08-0010

PT0190-7

09/11/14

PT7M1818/1813

Supervisory Circuit

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AC Electrical Characteristics

Fig 1. Timing diagram

SEN

VCC

RST

RPD

RST

Uncertain state

Fig 2. Timing diagram

RST

VCC

RST

0.8V

Uncertain state

External pull down

signal release

= 1.0V to 5.5V, T

= -40~85º unless otherwise noted. Typical values are at T

= +25º

Sym.

RPD

SEN

Description

Reset Timeout Period

Delay

Sensitivity

External Pull Down Signal Pulse

Pushbutton Detect

RST pin

Test Conditions

Min

140

0.8

Typ

200

1.5

Max

280

2.0

Unit

s

RST pin

*Note: RST will be asserted when it is pull down to the typical value or less.

2014-08-0010

PT0190-7

09/11/14

PT7M1818/1813

Supervisory Circuit

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Block Diagram

Vcc

Reset

Monitor

VCC Resistor

Divider

Timing

Delay

T.C.

Reference

RST

GND

Function Description

Power Monitor

A microprocessor’s (µP’s) reset input starts the µP in a known state. Whenever the µ is in an unknown state, it should be held in

reset. The supervisory circuits assert reset during power-up and prevent code execution errors during power-down or brownout

conditions.

On power-up, once Vcc reaches about 1.0V, RST is a guaranteed logic low of 0.4V or less. As Vcc rises, RST stays low. When

Vcc rises above the reset threshold V

RST

, an internal timer releases RST after about 200ms. RST asserts whenever Vcc drops

below the reset threshold, i.e. brownout condition. If brownout occurs in the middle of a previously initiated reset pulse, the pulse

continues for at least another 200ms. On power-down, once Vcc falls below the reset threshold, RST stays low and is guaranteed

to be 0.4V or less until Vcc drops below 1V.

Reset Output: Bi-direction

The devices provide RST output pin for a pushbutton switch. When the devices are not in a reset cycle, it continuously monitors

the RST signal for a low going edge. If an edge is detected, the devices will debounce the switch by pulling the RST line low.

After the internal timer has expired, the devices will continue to monitor the RST line. If the line is still low, they will continue to

monitor the line looking for a rising edge. Upon detecting a release, they will force the RST line low and hold it low for 200ms.

Application Information

Typical Operation Circuit

Vcc

PT7M1818

PT7M70xxBL

/1813

PT7M71xxBL

RST

MICROPROCESSOR

RESET

2014-08-0010

PT0190-7

09/11/14

PT7M1818/1813

Supervisory Circuit

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Mechanical Information

SOT23-3

DOCUMENT CONTROL NO.

PD-0018

REVISION: A

DATE: 5/17/2011

PKG. DIMENSIONS(MM)

SYMBOL

MIN

MAX

1.05

1.25

0.00

0.10

1.05

1.15

0.30

0.50

0.10

0.20

2.82

3.02

1.50

1.70

2.65

2.95

0.95BSC

1.80

2.00

0.30

0.60

0°

8°

Pericom Technology (Shanghai) Co.Ltd.

3/F., 20 Building ,481 Gui Ping Road,

Shanghai,200233

Tel:(86-21)6485-0576. Fax: (86-21)6485-2181

Note:

1) Controlling dimensions in millimeters.

DESCRIPTION: 3-Pin Small Outline Transistor, Plastic

Package, SOT-23

PACKAGE CODE: TA3

Ordering Information

Part Number

PT7M1818-20TE

PT7M1818-10TE

PT7M1818-5TE

PT7M1813-15TE

PT7M1813-10TE

PT7M1813-5TE

Note:



E = Pb-free or Pb-free and Green



Adding X Suffix= Tape/Reel



Contact Pericom for availability.

Package Code

Package

Lead free and Green SOT23-3

2014-08-0010

PT0190-7

09/11/14

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PT7M1818-10TE Related Products

	PT7M1818-10TE	PT7M1813-10TE	PT7M1818-20TE	PT7M1818-5TE
Description	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN	Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, GREEN, TO-236AB, SOT-23, 3 PIN
Is it Rohs certified?	conform to	conform to	conform to	conform to
Maker	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
package instruction	TSSOP, TO-236	TSSOP, TO-236	TSSOP, TO-236	TSSOP, TO-236
Reach Compliance Code	compliant	compliant	compliant	compli
ECCN code	EAR99	EAR99	EAR99	EAR99
Other features	RESET THRESHOLD VOLTAGE IS 2.9V	RESET THRESHOLD VOLTAGE IS 4.3V	RESET THRESHOLD VOLTAGE IS 2.5V	RESET THRESHOLD VOLTAGE IS 3V
Adjustable threshold	NO	NO	NO	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G3	R-PDSO-G3	R-PDSO-G3	R-PDSO-G3
length	2.92 mm	2.92 mm	2.92 mm	2.92 mm
Number of channels	1	1	1	1
Number of functions	1	1	1	1
Number of terminals	3	3	3	3
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP	TSSOP	TSSOP
Encapsulate equivalent code	TO-236	TO-236	TO-236	TO-236
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
power supply	1/5.5 V	1/5.5 V	1/5.5 V	1/5.5 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.12 mm	1.12 mm	1.12 mm	1.12 mm
Maximum supply current (Isup)	0.012 mA	0.012 mA	0.012 mA	0.012 mA
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	1 V	1 V	1 V	1 V
Nominal supply voltage (Vsup)	3 V	3 V	3 V	3 V
surface mount	YES	YES	YES	YES
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.95 mm	0.95 mm	0.95 mm	0.95 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
width	1.3 mm	1.3 mm	1.3 mm	1.3 mm

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