Diodes APX809, APX810 User Manual

APX809/810

3-PIN MICROPROCESSOR RESET CIRCUITS

Features

• Precision Monitoring of +2.5V, +3V, +3.3V, and +5V
Power-Supply Voltages

• Fully Specified Over Temperature

• Available in three Output Configurations

• Push-Pull

• Push-Pull

• 200ms Typ Power-On Reset Pulse Width

• 30µA Supply Current (Typ.)

• Guaranteed Reset Valid to V

• No External Components

• SOT23 and SOT23R: Available in “Green” Molding

Compound (No Br, Sb)

• Lead Free Finish/RoHS Compliant (Note 1)

RESET Active Low (APX809)

RESET Active High (APX810)

= +1V

CC

Applications

• Computers

• Controllers

• Intelligent Instruments

• Critical µP and µC Power Monitoring

• Portable/Battery Powered Equipment

• Automotive

Ordering Information

General Description

The APX809/810 are used for microprocessor (µP) supervisory
circuits to monitor th e power supplies in µP and digital systems .
They provide excellent circuit reliability and low cost by
eliminating external components and adjustments when used
with +5V, +3.3V, +3.0V powered circuits.

These circuits perform a single function: they assert a reset
signal whenever the V
threshold, keeping it asserted for at least 240ms after V
risen above the reset threshold. Reset thresholds suitable for
operation with a variety of supply voltages are available. The
APX809/810 have push pull outputs. The APX809 have an active

low

RESET

RESET output. The reset comparator is designed to ignore fast
transients on V
correct logic state for V
the APX809/810 ideal for use in portable equipment. The
APX809/810 is available in a 3-pin SOT23 and SOT23R
packages.

output, while the APX810 has an active high

CC

supply voltage declines below a preset

CC

, and the outputs are guaranteed to be in the

down to 1V. Low supply current makes

CC

CC

has

APX 8 XX - XX XX G - 7

Enable

09 : Active-Low
10 : Active-High

Voltage

46 : 4.63
44 : 4.38

Package

SA : SOT23
SR : SOT23R

40 : 4.00
31 : 3.08
29 : 2.93
26 : 2.63
23 : 2.25

Device

Package

Code

Packaging

(Note 2)

APX809-XXSAG-7 SA SOT23 3000/Tape & Reel -7
APX810-XXSAG-7 SA SOT23 3000/Tape & Reel -7
APX809-XXSRG-7 SR SOT23R 3000/Tape & Reel -7
APX810-XXSRG-7 SR SOT23R 3000/Tape & Reel -7

Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html

2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf

.

.

APX809/810 Rev. 4 1 of 9 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

Green

G : Green

Packing

7 : Tape & Reel

7” Tape and Reel

Quantity Part Number Suffix

Pin Assignments

APX809/810

3-PIN MICROPROCESSOR RESET CIRCUITS

( Top View )

( Top View )

1

2

2

APX809
APX810

3

V

CC

RESET

GND

(RESET)

1

2

2

APX809
APX810

RESET

3

V

CC

(RESET)

GND

SOT23RSOT23

Pin Descriptions

Pin Name Description

GND Ground

RESET

(RESET)

VCC Operating Voltage Input

Reset Output Pin
L: for APX809
H: for APX810

Absolute Maximum Ratings

Symbol Parameter Rating Unit

ESD HBM Human Body Model ESD Protection 5 KV

ESD MM Machine Model ESD Protection 500 V

VCC Supply Voltage -0.3 to +6.0 V

V

RESET

ICC Input Current, VCC 20 mA

IO

PD

TOP Operating Junction Temperature Range -40 to +105 °C

TST Storage Temperature Range -65 to +150 °C

APX809/810 Rev. 4 2 of 9 FEBRUARY 2009

RESET,

Output Current, RESET,
Continuous Power Dissipation (T

de-rate 4mW/°C above +70°C

RESET (push-pull)

RESET

www.diodes.com © Diodes Incorporated

= +70°C),

A

-0.3 to (V

+ 0.3) V

CC

20 mA

400 mW

T

APX809/810

3-PIN MICROPROCESSOR RESET CIRCUITS

Recommended Operating Conditions

Symbol Parameter Min Max Unit

VCC Supply Voltage 1.1 5.5 V

VIN Input Voltage 0 (VCC+0.3) V

TA Operating Ambi ent Temperature Range -40 85
TR Vcc Rising Time (Vcc = 0~VT) 100 V/ uS

Electrical Characteristics (T

= 25ºC)

A

T

= -40 to 85

A

o

C unless otherwise note . Typical values are at TA=+25 oC.

Symbol Parameter Test Conditions Min Typ. Max Unit

VCC V

Range TA = 0oC to +70oC 1.0 5.5 V

CC

ICC Supply Current VTH+ 0.2V 30 40 μA

APX809/810-23

2.21 2.25 2.30
APX809/810-26 2.59 2.63 2.69
APX809/810-29 2.88 2.93 3.00
APX809/810-31 3.02 3.08 3.15

= 0oC-85oC

T

A

APX809/810-40 3.93 4.00 4.08
APX809/810-44 4.31 4.38 4.47
APX809/810-46 4.56 4.63 4.72
APX809/810-23

2.20 2.25 2.30

VTH

Reset
Threshold

APX809/810-26 2.57 2.63 2.69
APX809/810-29 2.86 2.93 3.00

T

APX809/810-31 3.00 3.08 3.15

= -40oC-85oC

A

APX809/810-40 3.92 4.00 4.08
APX809/810-44 4.29 4.38 4.47
APX809/810-46 4.54 4.63 4.72

Reset Threshold Tempco 30 ppm/ oC

TS Set-up Time V

T

Reset Active Timeout Period TA = 0oC to +85oC 140 200 280 ms

DELAY

VOL

VOH

VOL

V

OH

θ

JA

θ

JC

Notes: 3. Test condition for SOT23/ SOT23R: Devices mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

TRESE Output Voltag e Lo w

(APX809)

Output Voltage-High

TRESE

(APX809)
RESET Output V oltage-Low

(APX810)
RESET Output Voltage-High
(APX810)
Thermal Resistance
Junction-to-Ambient

hermal Resistance

Junction-to-Case

= VTH to (VTH – 100mV) 20 μs

CC

V

= V

CC

V

CC

V

CC

V

CC

I

SOURCE

V

CC

I

SOURCE

V

CC

V

CC

-0.2, I

TH

= V

-0.2, I

TH

> 1.0V, I
> V

+0.2,

TH

= 500uA

> V

+0.2,

TH

= 800uA

= V

+0.2, I

TH

= V

+0.2, I

TH

1.8V < VCC < VTH -0.2,
I

= 150uA

SOURCE

= 1.2mA 0.3

SINK

= 3.2mA 0.4

SINK

= 50uA 0.3

SINK

0.8V

CC

–1.5

V

CC

= 1.2mA 0.3

SINK

= 3.2mA 0.4

SINK

0.8 V

V

CC

SOT23/SOT23R (Note 3) 201
SOT23/SOT23R (Note 3) 56

APX809/810 Rev. 4 3 of 9 FEBRUARY 2009

www.diodes.com © Diodes Incorporated

o

C

V

o

o

V

V

V

V

C/W
C/W