Datasheet SP809, SP810 Datasheet (Sipex)

SP809

3 Pin SOT-23

RESET

V

CC

GND

查询SP809-40供应商

SP809 / SP810

3 Pin Microprocessor Supervisor Circuit

FEATURES

■ Ultra Low Supply Current 1µA (typ.)

■ Guaranteed Reset valid to VCC= 0.9V

■ 140 ms Min. Power-On Reset Pulse Width

■ Internally Fixed Threshold 2.3V, 2.6V, 2.9V,

3.1V, 4.0V, 4.4V, 4.6V

■ Tight Voltage Threshold Tolerance: 1.5%

■ Offered in a 3 Pin SOT-23 Package

r e b m u N t r a P e p y T t u p t u O

N 9 0 8 P S w o L e v i t c A n i a r D -n e p O

9 0 8 P S w o L e v i t c A l l u P -h s u P

0 1 8 P S h g i H e v i t c A l l u P -h s u P

The SP809/SP810 are low power microprocessor (µP) supervisory circuits used to monitor power supplies in µP and digital systems. They provide applications with benefits of circuit reliability and low cost by eliminating external components. If the VCC supply voltage falls below

preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold. Both the SP809 and SP810 were designed with a reset comparator to help identify invalid signals, which last less than 140ms. The only difference between them is that they have an active-low RESET output and active-high RESET output, respectively. Low supply current (1µA) makes SP809/SP810 ideal for portable equipment. The devices are available in 3 pin SOT-23 package.

Now Available in Lead Free Packaging

APPLICATIONS

■ Portable Electronic Devices

■ Electrical Power Meter

■ Digital Still Camera

■ µP Power Monitoring

DESCRIPTION

TYPICAL APPLICATION CIRCUIT

V

CC

V

CC

RESET

(RESET)

GND

Push-Pull output

1

V

RESET

GND

CC

µP

V

.................................................................................... -0.3V to 6.5V

CC

RESET, RESET ......................................................... -0.3 to VCC+ 0.3V

Input Current (VCC) ....................................................................... 20mA

Output Current (RESET, RESET).................................................. 20mA

Continuous Power Dissipation (TA = +70ºC) ............................. 320mW

Operating Junction Temperature ................................... -40°C to +85°C

Junction Temperature.....................................................................125°C

Typical values are at TA= 25°C, unless otherwise specified. (Note 1)

r e t e m a r a P l o b m y S . n i M . p y T . x a M s t i n U s n o i t i d n o C

e g n a R e g a t l o V g n i t a r e p O V

t n e r r u C y l p p u S I

CC

9. 0 0.6 V

0. 1 0.3 A µ V

5 6 2 . 2 3. 2 53 3 . 2

4 5 2 . 2 64 3 . 2 T

1 6 5 . 2 6. 2 93 6 . 2

8 4 5 . 2 25 6 . 2 T

7 5 8 . 2 9. 2 44 9 . 2

2 4 8 . 2 85 9 . 2 T

d l o h s e r h T t e s e R V

HT

4 5 0 . 3 1. 3 74 1 . 3

8 3 0 . 3 26 1 . 3 T

0 4 9 . 3 0. 4 06 0 . 4

0 2 9 . 3 08 0 . 4 T

4 3 3 . 4 4. 4 66 4 . 4

2 1 3 . 4 88 4 . 4 T

1 3 5 . 4 6. 4 96 6 . 4

8 0 5 . 4 29 6 . 4 T

V

CC

d o i r e P

_ _ _ _ _ _

y a l eD t e s e R V

t u o e m i T e v i t c A t e s e R

e g a t l o V t u p t u O T E S E R

PI R T

T

PR

V

H O

V

L O

V

HO

V

L O

V8 . 0

02 S µ V

0 4 1 03 2 06 5

0 0 1 03 0 1 T

CC

ABSOLUTE MAXIMUM RATINGS

Storage Temperature .................................................. -65°C to +150°C

These are stress ratings only and functional operation of the device at these

ratings or any other above those indicated in the operation sections of the

specifications below is not implied. Exposure to absolute maximum rating

conditions for extended periods of time may affect reliability.

ELECTRICAL CHARACTERISTICS

V

s m V

V

3 . 0 V

V

3 . 0 V

V =

CC

V=

CC

V=

CC

V

V=

C C

V=

CC

V

V=

C C

V=

CC

V1 . 0 +

HT

T

3 2 -9 0 8 P S

T

6 2 -9 0 8 P S

T

9 2 -9 0 8 P S

T

1 3 -9 0 8 P S

T

0 4 -9 0 8 P S

T

4 4 -9 0 8 P S

T

6 4 -9 0 8 P S

V( o t

HT

T

)X A M ( H T

HT

C º 5 2 + =

A

H T

A m 2 . 1 =

C º 5 8 + o t C º 0 4 -=

V1 . 3 =

C º 5 8 + o t C º 0 4 -=

A m 2 . 1 =

A

C º 5 2 + =

A

C º 5 2 + =

A

C º 5 2 + =

A

C º 5 2 + =

A

C º 5 2 + =

A

C º 5 2 + =

A

V, )V 1 . 0-

C º 5 2 + =

A

I, V 1 . 0-

E C R U O S

I, V 1 . 0 +

KN I S

I, V 1 . 0 +

EC R U O S

I, V 1 . 0-

K N I S

2

ELECTRICAL CHARACTERISTICS

Note 1. Specifications are production tested at TA = 25°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with Statistical Quality Controls Note 2. RESET output is for SP809; RESET output is for SP810.

BLOCK DIAGRAMS

V

CC

GND

N-ch Open-Drain Type

V

CC

GND

R1

R2

R1

R2

Bandgap

Reset Generator

Reset

NMOS

Reset

(Reset)

Push-Pull Type

TEST CIRCUIT

CC

SP809

RESET

V

GND

3

TYPICAL PERFORMANCE CHARACTERISTICS

V

V V

V

V V

V

V V

V

1.5

1.4

1.3

TH

= 2.3V

1.2

= 3.1V

1.1

TH

1.0

= 4.6V

0.9

Supply Current (µA)

TH

0.8

0.7

0.6

0.5

-40 -20 0 20 40 60 80 100

Temperature (ºC)

Figure 1. Supply Current vs. Temperature

240

220

200

= 50mV

OD

180

160

140

120

100

80

Power-Down Reset Delay (µS)

60

40

20

0

-60 -40 -20 0 20 40 60 80 100

Temperature (°C)

= 3.1V

TH

= VTH- V

OD

= 100mV

OD

= 200mV

CC

Figure 3. Power-Down Reset Delay vs. Temperature

120

110

100

= 50mV

OD

90

80

70

60

50

40

Power-Down Reset Delay (µS)

30

20

10

0

-60 -40 -20 0 20 40 60 80 100

Temperature (°C)

TH

OD

= 2.3V

= V

= 200mV

OD

- V

TH

= 100mV

OD

CC

Figure 2. Power-Down Reset Delay vs. Temperature

400

= 50mV

OD

300

200

Power-Down Reset Delay (µS)

100

0

-60 -40 -20 0 20 40 60 80 100

Temperature (ºC)

TH

OD

= 4.6V

= V

OD

- V

TH

CC

= 100mV

= 200mV

Figure 4. Power-Down Reset Delay vs. Temperature

600

1.015

1.010

1.005

TH

1.000

0.995

Normalized Reset Threshold (V)

0.990

0.985

-40 -20 0 20 40 60 80 100

= 2.3V

TH

= 4.6V

TH

Temperature (ºC)

= 3.1V

= 4.6V

TH

500

= 3.1V

TH

400

= 2.3V

TH

300

200

Power-Up Reset Timeout (ms)

100

0

-60 -40 -20 0 20 40 60 80 100

Temperature (°C)

Figure 5. Normalized Reset Threshold vs. Temperature

Figure 6. Power-Up Reset Time-out vs. Temperature

4

e m a N n i P n o i t p i r c s e D

D N G . d n u o r G

PIN DESCRIPTION

) 9 0 8 P S ( T E S E R

) 0 1 8 P S ( T E S E R

V

C C

. d l o h s e r h t

e g a t l o V y l p p u S

µP will be activated at a valid reset state. These µP supervisory circuits assert reset to prevent code execution errors during powerup, power-down, or brownout conditions.

Reset is guaranteed to be a logic low for VTH>VCC>0.9V. Once V threshold, an internal timer keeps RESET low

exceeded the reset

CC

for the reset timeout period; after this interval, RESET goes high.

If a brownout condition occurs (V below the reset threshold), RESET goes low. Any time V the internal timer resets to zero, and RESET

goes below the reset threshold,

CC

drops

goes low. The internal timer is activated after V

returns above the reset threshold, and

CC

RESET remains low for the reset timeout period.

t e s e r e h t w o l e b s i C C V e l i h w w o l s n i a m e r t u p t u O T E S E R . n i p t u p t u o w o l e v i t c A

t e s e r e h t w o l e b s i C C V e l i h w h g i h s n i a m e r t u p t u O T E S E R . n i p t u p t u o h g i h e v i t c A

DETAILED DESCRIPTION

Benefits of Highly Accurate Reset Threshold

SP809/810 with specified voltage as 5V±10% or 3V±10% are ideal for systems using a 5V±5% or 3V±5% power supply. The reset is guaranteed to assert after the power supply falls below the minimum specified operating voltage range of the system ICs. The pretrimmed thresholds are reducing the range over which an undesirable reset may occur.

APPLICATION INFORMATION

Negative-Going V

In addition to issuing a reset to the µP during power-up, power-down, and brownout conditions, SP809 series are relatively resistant to short-duration negative-going V

Ensuring a Valid Reset Output Down to VCC= 0

When V output no longer sinks current; it becomes

falls below 0.9V, SP809 RESET

CC

an open circuit. In this case, high-impedance CMOS logic inputs connecting to RESET can drift to undetermined voltages. Therefore, SP809/810 with CMOS is perfect for most applications of V

0.9V.

Transients

CC

transient.

CC

down to

CC

However in applications where RESET must be valid down to 0V, adding a pulldown resistor to RESET causes any leakage currents to flow to ground, holding RESET low.

Interfacing to µP with Bidirectional Reset Pins

The RESET output on the SP809N is open drain, this device interfaces easily with µPs that have bidirectional reset pins. Connecting the µP supervisor's RESET output directly to the microcontroller's RESET pin with a single pull-up resistor allows either device to assert reset.

5

PACKAGE: 3 PIN SOT-23

D

b

3

SIDE VIEW

1

TOP VIEW

E

E1

2

e

e1

(L1)

FRONT VIEW

Gauge Plane

L2

ø

3 Pin SOT-23 JEDEC TO-236 Variation AB

SYMBOL

MIN NOM MAX MIN NOM MAX

b 0.30 - 0.50 c 0.08 - 0.20 D 2.80 2.90 3.04 E 2.10 - 2.64 E1 1.20 1.30 1.40 e e1 L 0.40 0.50 0.60 L1 L2 Ø 0º - 8º 0º

A 0.89 - 1.12 A1 0.01 - 0.10 A2 0.88 0.95 1.02

SIPEX Pkg Signoff Date/Rev: JL Oct25-05 / Rev A

L

Dimensions in Millimeters:

Controlling Dimension

0.54 REF 0.021 REF

0.25 BSC

Seating

Plane

A

Dimensions in Inches

Conversion Factor: 1 Inch = 25.40 mm

0.012

0.003

0.110 0.114 0.120

0.083

0.047 0.051 0.055

0.016 0.020 0.024

0.035 - 0.044

0.000 - 0.004

0.035 0.037 0.040

A2

A1

c

-

0.038 BSC0.95 BSC

0.075 BSC1.90 BSC

0.010 BSC

-

Seating

Plane

0.020

0.008

0.104

8º

6

ORDERING INFORMATION

Part Number Top Mark Temperature Range Package Type

SP809EK-2-3 ......................... N4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-2-3/TR ................... N4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-2-6 ......................... P4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-2-6/TR ................... P4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-2-9 ......................... Q4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-2-9/TR ................... Q4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-3-1 ......................... R4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-3-1/TR ................... R4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-0 ......................... S4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-0/TR ................... S4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-4 ......................... T4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-4/TR ................... T4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-6 ......................... U4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809EK-4-6/TR ................... U4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-3 ...................... V4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-3/TR ................ V4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-6 ..................... W4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-6/TR ............... W4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-9 ...................... X4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-2-9/TR ................ X4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-3-1 ...................... Y4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-3-1/TR ................ Y4WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-0 ...................... A5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-0/TR ................ A5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-4 ...................... B5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-4/TR ................ B5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-6 ...................... C5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP809NEK-4-6/TR ................ C5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

Available in lead free packaging. To order add "-L" suffix to part number.

Example: SP809EK-2-3/TR = standard; SP809EK-L-2-3/TR = lead free

/TR = Tape and Reel

Pack quantity is 2,500 for SOT-23.

Sipex Corporation

Headquarters and Sales Office

233 South Hillview Drive Milpitas, CA 95035

Solved By SipexTM

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.

TEL: (408) 934-7500 FAX: (408) 935-7600

7

ORDERING INFORMATION

Part Number Top Mark Temperature Range Package Type

SP810EK-2-3 ......................... D5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-2-3/TR ................... D5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-2-6 ......................... E5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-2-6/TR ................... E5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-2-9 ......................... F5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-2-9/TR ................... F5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-3-1 ......................... G5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-3-1/TR ................... G5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-0 ......................... H5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-0/TR ................... H5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-4 ......................... J5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-4/TR ................... J5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-6 ......................... K5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

SP810EK-4-6/TR ................... K5WW..................-40°C to 85°C .......................... 3 Pin SOT-23

Available in lead free packaging. To order add "-L" suffix to part number.

Example: SP810EK-2-3/TR = standard; SP810EK-L-2-3/TR = lead free

/TR = Tape and Reel

Pack quantity is 2,500 for SOT-23.

Sipex Corporation

Headquarters and Sales Office

233 South Hillview Drive Milpitas, CA 95035

Solved By SipexTM

Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.

TEL: (408) 934-7500 FAX: (408) 935-7600

8

Datasheet SP809, SP810 Datasheet (Sipex)

Specifications and Main Features

Frequently Asked Questions

User Manual