SP730EK-4.375 Sipex, SP730EK-4.375 Datasheet

SP730EK-4.375

Manufacturer Part Number

SP730EK-4.375

Description

Microprocessor Supervisory Circuit with Pull Up Resistor

Manufacturer

Sipex

Datasheet

1.SP730EK-4.375.pdf (7 pages)

Current page: 1 of 7
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The SP730 is a voltage supervisory device designed to keep a microcontroller in reset until the

system voltage has reached the proper level and stabilized. It also operates as protection from

brown-out conditions when the supply voltage drops below a safe operating level. The SP730

has an internal 5k pull-up resistor. The device has an active low RESET pin and will assert the

RESET signal whenever the voltage on the V

available in a small 3 pin SOT-23 package. Contact factory for other trip voltage options.

FEATURES

■ Holds Microcontroller in Reset

■ Reset Microcontroller during power loss

■ 4.375 Voltage Trip Point

■ Active Low RESET Pin

■ Internal Pull-up Resistor

■ Holds RESET for 350ms (typical)

■ RESET valid down to V

■ 45µA Typical Operating Current

■ Offered in a 3 Pin SOT-23 Package

APPLICATIONS

■ Portable Electronic Devices

■ Electrical Power Meter

■ Computer System Board

■ Modem

Date: 6/14/04

GND

1.0V

SP730

SP730 Microprocessor Supervisory Circuit

RESET

V DD

pin is below the trip-point voltage. The part is

Bypass

Capacitor

Microprocessor Supervisory

Circuit with Pull Up Resistor

Now Available in Lead Free Packaging

V DD

Microcontroller

TYPICAL APPLICATION CIRCUIT

MCLR

RESET

V DD

GND

RESET

3 Pin SOT-23

SP730

GND

DESCRIPTION

SP730

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SP730EK-4.375 Summary of contents

Page 1

... Now Available in Lead Free Packaging pin is below the trip-point voltage. The part is DD TYPICAL APPLICATION CIRCUIT V DD Microcontroller SP730 V DD Bypass V DD Capacitor MCLR or RESET RESET SP730 Microprocessor Supervisory Circuit 1 SP730 GND SP730 3 Pin SOT-23 V RESET DD DESCRIPTION GND © Copyright 2004 Sipex Corporation ...

Page 2

Page 3

... OH 3 PIN SOT-23 DESCRIPTION Active Low. This pin goes low whenever V threshold. Supply input. Ground. SP730 Microprocessor Supervisory Circuit 3 FUNCTIONAL DIAGRAM 5kΩ Internal pull up resistor RESET TIMING DIAGRAM tRPD V OH PIN DESCRIPTION falls below the reset DD © Copyright 2004 Sipex Corporation ...

Page 4

... Date: 6/14/04 TYPICAL PERFORMANCE CHARACTERISTICS Idd vs Temperature Temperature ('C) tRPU vs Temperature Temperature ('C) SP730 Microprocessor Supervisory Circuit 4 Idd 80 100 tRPU 80 100 © Copyright 2004 Sipex Corporation ...

Page 5

... Date: 6/14/04 TYPICAL PERFORMANCE CHARACTERISTICS Normalized VTRIP vs Temperature Temperature ('C) VOL vs IOL IOL (mA) SP730 Microprocessor Supervisory Circuit 100 Vdd=4.25V Vdd=3.5V Vdd=2.5V Temp = 25 © Copyright 2004 Sipex Corporation ...

Page 6

... D 2.80 2.90 E 2.10 E1 1.20 1.30 L 0.30 0.45 L1 0.54 REF 0º - Ø Date: 6/14 1.02 - 0.50 - 0.20 3.04 - 2.64 WITH PLATING 1.40 0.60 8º SP730 Microprocessor Supervisory Circuit 6 3 PIN SOT-23 SEE VIEW C Gauge Plane VIEW C Seating Plane C SIDE VIEW b c BASE METAL 3 PIN SOT-23 © Copyright 2004 Sipex Corporation ...

Page 7

... SP730EK-4.375...............V3WW................-40°-85°..............................3 Pin SOT-23 SP730EK-4.375/TR.........V3WW................-40°-85°..............................3 Pin SOT-23 Available in lead free packaging. To order add "-L" suffix to part number. Example: SP730EK-4.375/TR = standard; SP730EK-4.375-L/TR = lead free /TR = Tape and Reel Pack quantity is 2500 for SOT-23. ...

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