Datasheet FM810T Datasheet (Fairchild Semiconductor)

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October 2002

FM809/810 3-Pin µC Supervisor Circuits

FM809/810 Rev. F

FM809/810 3-Pin µC Supervisor Circuits

General Description

The FM809/810 are supervisor circuits that monitor power supply or other system voltages and issue reset pulse whenever the voltage being monitored is out of tolerance. Once asserted, the reset pulse is guaranteed to be valid for a minimum of 140ms (256ms typical). FM809xx offers active low push-pull type of reset while FM810xx offers active high push-pull type. Several threshold voltages are offered to accommodate 5.0V,

3.3V, 3.0V and 2.7V system voltages.

The low supply current (typically 2 µA)recommends FM809/810 devices for portable designs or wherever power saving is primary.

These devices are offered in space saving 3-pin SOT23 and SC70 packages.

Features

■

voltages of 4.63V, 4.38V, 4.00V, 3.08V, 2.93V and 2.63V

■

RESET

(FM809) or RESET (FM810) output

■

140ms power-on RESET delay (minimum)

■

RESET operation guaranteed to 1.0V

■

Supply current only 2µA

■

No external components

■

Operating Range – -40°C to +105°C (SOT23) – -40°C to +85°C (SC70)

■

SOT23-3 and SC70-3 packages

Applications

■

Microcontrollers and Microprocessors

■

Appliances

■

Power-Supply Monitoring

■

Portable Equipment

■

Automotive Systems

Typical Operating Circuit

Connection Diagram

FM809

µC

GND

RESET I/P

RESET

GND

RESET (809) or

RESET (810)

FM809/810

SOT23-3 & SC70-3Packages

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FM809/810 3-Pin µC Supervisor Circuits

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FM809/810 Rev. F

Absolute Maximum Ratings

Voltage on any terminal relative to GND V

-0.3V to +6.0V

RESET, RESET

-0.3V to (V

+ 0.3V) Input Current 20mA Output Current: RESET, RESET

20mA

ESD Rating Human Body Model >2KV Machine Model >200KV Rate of Rise of V

100V/µs

Continuous Power Dissipation (T

= +70°C) SOT23-3 (derate 4mW/°C above +70°C) 320mW Operating Temperature Range -40°C to +105°C Storage Temperature Range -65°C to +150°C Lead Temperature (soldering, 10s) +300°C

These are stress ratings only, and functional operation is not implied for these levels or beyond. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Electrical Characteristics

SOT23 Package (T

= 25°C unless otherwise noted)

= full range, as noted under conditions. See Note 1.

Note 1: Testing in production is 25°C only. V

= 5V for FM8xxL/M/J, V

= 3.3V for FM8xxT/S and V

= 3V for FM8xxR. Limits over temperature are guaranteed by design.

Note 2 : RESET

output is for FM809. RESET output is for FM810.

Note 3 : Typical values are at 25°C.

Note 4: Recommended minimum slew rate for the V

rampup is 200mV/sec in the 0 to 2V range for the device to function properly.

Parameter Symbol Conditions Min

Typ

(Note 3) Max Units

Operating Voltage V

= 0°C to +70°C 1.0 5.5 V

= -40°C to 105°C 1.1 5.5

Supply Current I

= -40°C to 105°C, V

< 5.5V

FM809J/L/M

510µA

= -40°C to 105°C, V

< 3.6V

FM809R/S/T

Reset Threshold V

FM8xxL T

= -40°C to +105°C 4.40 4.63 4.86 V

FM8xxM T

= -40°C to +105°C 4.18 4.38 4.52

FM8xxJ T

= -40°C to +105°C 3.90 4.00 4.18

FM8xxT T

= -40°C to +105°C 2.97 3.08 3.19

FM8xxS T

= -40°C to +105°C 2.79 2.93 3.00

FM8xxR T

= -40°C to +105°C 2.49 2.63 2.70

Reset Threshold Tempco 30 ppm/°C

to Reset Delay (Note 2) V

= V

to (V

- 100mV) 10 15 µs

Reset Active Timout Period T

= -40°C to +105°C 140 256 560 ms

FM809 Output Low (RESET)V

= V

(min), I

SINK

= 1.2mA,

FM809R/S/T

0.3 V

= V

(min), I

SINK

= 3.2mA,

FM809J/L/M

0.4

= < 1.0V, I

SINK

= 50µA 0.3

FM809 Output High (RESET)V

> V

(max), I

SOURCE

= 500µA (R/S/T) 0.8V

> V

(max), I

SOURCE

= 800µA (J/M/L) V

- 1.5V

FM810 Output Low (RESET) V

= V

(max), I

SINK

= 1.2mA,

FM810R/S/T

0.3 V

= V

(max), I

SINK

= 3.2mA,

FM810J/L/M

0.4

FM810 Output High (RESET) V

1.8V < V

< V

(min), I

SOURCE

= 150µA 0.8V

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FM809/810 3-Pin µC Supervisor Circuits

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FM809/810 Rev. F

Absolute Maximum Ratings

Voltage on any terminal relative to GND V

-0.3V to +6.0V

RESET, RESET

-0.3V to (V

+ 0.3V) Input Current 20mA Output Current: RESET, RESET

20mA

ESD Rating Human Body model 1.5KV Machine model >200KV Rate of Rise of V

100V/µs

Continuous Power Dissipation (T

= +70°C) SC70-3 174mW Operating Temperature Range -40°C to +85°C Storage Temperature Range -65°C to +150°C Lead Temperature (soldering, 10s) +300°C

These are stress ratings only, and functional operation is not implied for these levels or beyond. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.

Electrical Characteristics

SC70 Package (T

= 25°C unless otherwise noted)

= full range, as noted under conditions. See Note 1.

Note 1: Testing in production is 25°C only. V

= 5V for FM8xxL/M/J, V

= 3.3V for FM8xxT/S and V

= 3V for FM8xxR. Limits over temperature are guaranteed by design.

Note 2: RESET

output is for FM809. RESET output is for FM810.

Note 3: Typical values are at 25°C.

Parameter Symbol Conditions Min

Typ

(Note 3) Max Units

Operating Voltage V

= 0°C to +70°C 1.4 5.5 V

= -40°C to 85°C 1.6 5.5

Supply Current I

= -40°C to 85°C, V

< 5.5V FM809J/L/M 9 15 µA

= -40°C to 85°C, V

< 3.6V FM809R/S/T 6 10

Reset Threshold V

FM8xxL T

= -40°C to +85°C 4.40 4.63 4.86 V

FM8xxM T

= -40°C to +85°C 4.18 4.38 4.52

FM8xxJ T

= -40°C to +85°C 3.90 4.00 4.18

FM8xxT T

= -40°C to +85°C 2.97 3.08 3.19

FM8xxS T

= -40°C to +85°C 2.79 2.93 3.00

FM8xxR T

= -40°C to +85°C 2.49 2.63 2.70

Reset Threshold Tempco 30 ppm/°C

to Reset Delay (Note 2) V

= V

to (V

- 100mV) 10 15 µs

Reset Active Timout Period T

= -40°C to +85°C 100 256 560 ms

FM809 Output Low (RESET)V

= V

(min), I

SINK

= 1.2mA, FM809R/S/T 0.35 V

= V

(min), I

SINK

= 3.2mA, FM809J/L/M 0.4

= < 1.0V, I

SINK

= 50µA 0.3

FM809 Output High (RESET)V

> V

(max), I

SOURCE

= 500µA (R/S/T) 0.8V

VCC > VTH(max), I

SOURCE

= 800µA (J/M/L) VCC - 1.5V

FM810 Output Low (RESET) V

VCC = VTH(max), I

SINK

= 1.2mA, FM810R/S/T 0.35 V

VCC = VTH(max), I

SINK

= 3.2mA, FM810J/L/M 0.4

FM810 Output High (RESET) V

1.8V < VCC < VTH(min), I

SOURCE

= 150µA 0.8V

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FM809/810 3-Pin µC Supervisor Circuits

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FM809/810 Rev. F

Pin Descriptions

* with overbar, FM809 (RESET); without, FM810 (RESET).

Circuit Timing (e.g.: FM809)

When operating properly with 5V in (for example), V

OUT

will also

be about 5V. When VIN starts to fall, V

OUT

will follow it down as

shown. When VIN drops below VTH, V

OUT

drops to ground ("issues a RESET") and stays there unless VIN also falls below its minimum operating voltage, approx. 1V. At this point, the supervisor loses control, and its output may rise, only to again follow VIN down to the ground.

When VIN begins to rise, V

OUT

follows it until 1.0V or so is

reached, whereupon the device regains control, V

OUT

is pulled

to ground, etc. When VIN rises above VTH, V

OUT

comes out of

RESET 140 ms later.

If it is required that a lower value than GND + 1.0V is needed on RESET signal during VCC ≤ 1V, a 100K resistor may be used on the device output (to GND for the FM809, to VCC for the FM810).

Pin Number Name Function

1 GND GROUND

2 RESET* RESET (RESET) remains LOW (HIGH) while VCC is below VTH,

and for at least 140ms after VCC rises above VTH.

GND

INPUT

OUTPUT

140ms

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FM809/810 3-Pin µC Supervisor Circuits

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FM809/810 Rev. F

Ordering Information (FM809)

Note 4: Devices listed above feature 250ms typical Reset Pulse width. Consult Fairchild sales for other reset pulse width options.

Part Number Top Marking

RESET

Threshold (V) Output Type Package Type

Packing Method

FM809LS3X 09L 4.63 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809MS3X 09M 4.38 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809JS3X 09J 4.00 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809TS3X 09T 3.08 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809SS3X 09S 2.93 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809RS3X 09R 2.63 Push-Pull, active LOW 3-Pin, SOT23 3000 units in T&R

FM809LP3X VLY 4.63 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

FM809MP3X VMY 4.38 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

FM809JP3X VJY 4.00 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

FM809TP3X VTY 3.08 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

FM809SP3X VSY 2.93 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

FM809RP3X VRY 2.63 Push-Pull, active LOW 3-Pin, SC70 3000 units in T&R

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FM809/810 3-Pin µC Supervisor Circuits

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FM809/810 Rev. F

Ordering Information (FM810)

Note 5: Devices listed above feature 250ms typical Reset Pulse width. Consult Fairchild sales for other reset pulse width options.

Part Number Top Marking

RESET

Threshold (V) Output Type Package Type

Packing

Method

FM810LS3X 10L 4.63 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810MS3X 10M 4.38 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810JS3X 10J 4.00 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810TS3X 10T 3.08 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810SS3X 10S 2.93 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810RS3X 10R 2.63 Push-Pull, active HIGH 3-Pin, SOT23 3000 units in T&R

FM810LP3X ZLY 4.63 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

FM810MP3X ZMY 4.38 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

FM810JP3X ZJY 4.00 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

FM810TP3X ZTY 3.08 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

FM810SP3X ZSY 2.93 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

FM810RP3X ZRY 2.63 Push-Pull, active HIGH 3-Pin, SC70 3000 units in T&R

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FM809/810 Rev. F

FM809/810 3-Pin µC Supervisor Circuits

Physical Dimensions inches (millimeters) unless otherwise noted

.12

0.105

0.079

0.071

0.004

0.001

0.040

0.031

0.021

0.015

0.055

0.047

0.098

0.083

0.010

0.005

0.0059

0.0035

0-8

0.76

0.95

2.29

LAND PATTERN RECOMMENDATION

SOT-23 Package Dimensions

FS Pkg Code AU

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FM809/810 Rev. F

FM809/810 3-Pin µC Supervisor Circuits

Life Support Policy

Fairchild's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President of Fairchild Semiconductor Corporation. As used herein:

1. Life support devices or systems are devices or systems which,

(a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a signiﬁcant injury to the user.

2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

Fairchild Semiconductor Fairchild Semiconductor Fairchild Semiconductor Fairchild Semiconductor Americas Europe Hong Kong Japan Ltd. Customer Response Center Fax: +44 (0) 1793-856858 8/F, Room 808, Empire Centre 4F, Natsume Bldg.

Tel. 1-888-522-5372 Deutsch Tel: +49 (0) 8141-6102-0 68 Mody Road, Tsimshatsui East 2-18-6, Yushima, Bunkyo-ku

English Tel: +44 (0) 1793-856856 Kowloon. Hong Kong Tokyo, 113-0034 Japan Fran çais Tel: +33 (0) 1-6930-3696 Tel; +852-2722-8338 Tel: 81-3-3818-8840 Italiano Tel: +39 (0) 2-249111-1 Fax: +852-2722-8383 Fax: 81-3-3818-8841

Physical Dimensions inches (millimeters) unless otherwise noted

.004 (.10)

.026 (.65)

.052 (1.3)

.087 (2.2) .071 (1.8)

.016 (.40) .012 (.30)

.043 (1.1) .032 (.80)

.018 (.45) .006 (.15)

.010 (.25) .004 (.10)

.009 (.23) .005 (.13)

.087 (2.2) .079 (2.0)

.053 (1.35) .045 (1.15)

Land Pattern Recommendation

0.65

1.80

0.5

0.6

0.65

SC70 Package Dimensions