DS1810R-5-U+ datasheet, PDF - EEWORLD Datasheet

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DS1810R-5-U+: DescriptionPower Supply Support Circuit, Fixed, 1 Channel, +4.62VV, CMOS, PDSO3, ROHS COMPLIANT, SOT-23, 3 PIN; CategoryPower/power management The power supply circuit; File Size115KB，5 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html; Environmental Compliance

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DS1810R-5-U+ Overview

Power Supply Support Circuit, Fixed, 1 Channel, +4.62VV, CMOS, PDSO3, ROHS COMPLIANT, SOT-23, 3 PIN

DS1810R-5-U+ Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Maxim
Parts packaging code	SOT-23
package instruction	TSSOP, TO-236
Contacts	3
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	6 weeks
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G3
JESD-609 code	e3
length	2.92 mm
Humidity sensitivity level	1
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
Peak Reflow Temperature (Celsius)	260
power supply	1.2/5.5 V
Certification status	Not Qualified
Maximum seat height	1.12 mm
Maximum supply current (Isup)	0.04 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	1.2 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Threshold voltage nominal	+4.62V
Maximum time at peak reflow temperature	30
width	1.3 mm

DS1810R-5-U+ Preview

DS1810

5V EconoReset with Push-Pull Output

www.maxim-ic.com

FEATURES

Automatically restarts a microprocessor after

power failure

Maintains reset for 150 ms after V

returns

to an in-tolerance condition

Reduces need for discrete components

Precision temperature-compensated voltage

reference and voltage sensor

Low-cost TO-92 or space saving surface

mount SOT-23 packages available

Push-Pull output for low current operation

Operating temperature -40°C to +85°C

PIN ASSIGNMENT

DALLAS

DS1810

Econo

Reset

1 2 3

BOTTOM VIEW

TO-92 PACKAGE

See Mech.

Drawings Section

On Website

TOP VIEW

SOT-23 PACKAGE

See Mech.

Drawings Section

On Website

PIN DESCRIPTION

TO-92

RST

GND

Active Low Reset Output

Power Supply

Ground

SOT-23

RST

GND

Active Low Reset Output

Power Supply

Ground

DESCRIPTION

The DS1810 EconoReset uses a precision temperature reference and comparator circuit to monitor the

status of the power supply (V

). When an out-of-tolerance condition is detected, an internal power-fail

signal is generated which forces reset to the active state. When V

returns to an in-tolerance condition,

the reset signal is kept in the active state for approximately 150 ms to allow the power supply and

processor to stabilize.

1 of 5

041002

DS1810

OPERATION - POWER MONITOR

The DS1810 provides the function of detecting out-of-tolerance power supply conditions and warning a

processor-based system of impending power failure. When V

is detected as out-of-tolerance, the

RST

signal is asserted. On power-up,

RST

is kept active for approximately 150 ms after the power supply has

reached the selected tolerance. This allows the power supply and microprocessor to stabilize before

RST

is released.

BLOCK DIAGRAM (PUSH-PULL OUTPUT)

Figure 1

APPLICATION EXAMPLE

Figure 2

OUTPUT VALID CONDITIONS

All versions of the DS1810 can maintain a valid output as long as V

remains above 1.2 volt. However,

the

RST

outputs on the DS1810 use a push-pull structure which can maintain a valid output below 1.2

volts on an input. To sink current below 1.2 volts, a resistor can be connected from

RST

to Ground (see

Figure 3). This arrangement will maintain a valid value on the

RST

outputs even it V

approaches 0

volts. During both power-up and -down this arrangement will draw current when

RST

is in the high state.

A value of about 100 kV should be adequate to maintain a valid condition.

2 of 5

DS1810

APPLICATION DIAGRAM:

RST

VALID TO 0 VOLTS VCC ON THE DS1810

Figure 3

TIMING DIAGRAM: POWER-UP

Figure 4

TIMING DIAGRAM: POWER-DOWN

Figure 5

3 of 5

DS1810

ABSOLUTE MAXIMUM RATINGS*

Voltage on V

Pin Relative to Ground

Voltage on

RST

Relative to Ground

Operating Temperature

Storage Temperature

Soldering Temperature

-0.5V to +7.0V

-0.5V to V

+0.5V

-40°C to +85°C

-55°C to +125°C

260°C for 10 seconds

This is a stress rating only and functional operation of the device at these or any other conditions

above those indicated in the operation sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods of time may affect reliability.

RECOMMENDED DC OPERATING CONDITIONS

PARAMETER

Supply Voltage

SYMBOL

MIN

1.2

TYP

MAX

5.5

(-40°C to +85°C)

UNITS

NOTES

DC ELECTRICAL CHARACTERISTICS

PARAMETER

Output Voltage @ 0-500

Output Current @ 2.4V

Output Current @ 0.4V

Operating Current V

< 5.5

Trip Point (DS1810-5)

Trip Point (DS1810-10)

Trip Point (DS1810-15)

Output Capacitance

SYMBOL

CCTP

OUT

4.50

4.25

4.00

+10

MIN

(-40°C to +85°C; V

=1.2V to 5.5V)

TYP

350

4.62

4.37

4.12

4.75

4.49

4.24

MAX

UNITS

NOTES

-0.5V V

-0.1V

AC ELECTRICAL CHARACTERISTICS

PARAMETER

RESET Active Time

Detect to

RST

Slew Rate

CCTP

(MAX) to V

CCTP

(MIN))

Slew Rate

CCTP

(MIN) to V

CCTP

(MAX))

Detect to

RST

SYMBOL

RST

RPD

RPU

300

100

MIN

100

(-40°C to +85°C; V

=1.2V to 5.5V)

TYP

150

MAX

300

UNITS

150

300

NOTES

4 of 5

DS1810

NOTES:

1. All voltages are referenced to ground.

2. Measured with V

2.7 volts.

3. Measured with

RST

output open.

4. t

= 5

ms.

PART MARKING CODES

SOT-23 PACKAGE

“A”, “B”, &“C” represent the device type.

810

DS1810

811

DS1811

812

DS1812

813

DS1813

815

DS1815

816

DS1816

817

DS1817

818

DS1818

“D” represents the device tolerance.

10%

15%

20%

5 of 5

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DS1810R-5-U+ Related Products

	DS1810R-5-U+	DS1810R-10-U+	DS1810R-15-U+
Description	Power Supply Support Circuit, Fixed, 1 Channel, +4.62VV, CMOS, PDSO3, ROHS COMPLIANT, SOT-23, 3 PIN	Power Supply Support Circuit, Fixed, 1 Channel, +4.37VV, CMOS, PDSO3, ROHS COMPLIANT, SOT-23, 3 PIN	Power Supply Support Circuit, Fixed, 1 Channel, +4.12VV, CMOS, PDSO3, ROHS COMPLIANT, SOT-23, 3 PIN
Is it lead-free?	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to
Maker	Maxim	Maxim	Maxim
Parts packaging code	SOT-23	SOT-23	SOT-23
package instruction	TSSOP, TO-236	TSSOP, TO-236	TSSOP, TO-236
Contacts	3	3	3
Reach Compliance Code	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99
Factory Lead Time	6 weeks	6 weeks	1 week
Adjustable threshold	NO	NO	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT	POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code	R-PDSO-G3	R-PDSO-G3	R-PDSO-G3
JESD-609 code	e3	e3	e3
length	2.92 mm	2.92 mm	2.92 mm
Humidity sensitivity level	1	1	1
Number of channels	1	1	1
Number of functions	1	1	1
Number of terminals	3	3	3
Maximum operating temperature	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP	TSSOP
Encapsulate equivalent code	TO-236	TO-236	TO-236
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	260	260
power supply	1.2/5.5 V	1.2/5.5 V	1.2/5.5 V
Certification status	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.12 mm	1.12 mm	1.12 mm
Maximum supply current (Isup)	0.04 mA	0.04 mA	0.04 mA
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	1.2 V	1.2 V	1.2 V
Nominal supply voltage (Vsup)	5 V	5 V	5 V
surface mount	YES	YES	YES
technology	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING
Terminal pitch	0.95 mm	0.95 mm	0.95 mm
Terminal location	DUAL	DUAL	DUAL
Threshold voltage nominal	+4.62V	+4.37V	+4.12V
Maximum time at peak reflow temperature	30	NOT SPECIFIED	NOT SPECIFIED
width	1.3 mm	1.3 mm	1.3 mm

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