View ADM6384_698690.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Preliminary Technical Data
FEATURES
Precision 1.8V to 5V Power Supply Monitoring 31 Reset Threshold Options: 1.58V to 5.0V Four Reset Timeouts: 1ms, 20ms, 140ms, 1120ms Manual Reset Input Reset Output Stage- Push-Pull Active-Low Guaranteed Reset Output valid to VCC=1V Power Supply Glitch Immunity Specified Over -40C to +125C Temperature Range 4-Lead SC70 Package
Microprocessor Supervisory Circuit in 4-Lead SC70 ADM6384
FUNCTIONAL BLOCK DIAGRAM
ADM6384
VCC
VREF
RESET GENERATOR
RESET
MR
DEBOUNCE
GND
APPLICATIONS
Microprocessor Systems Computers Controllers Intelligent Instruments Portable Equipment
GENERAL DESCRIPTION
The ADM6384 is a supervisory circuit which monitors power supply voltage levels in microprocessor-based systems. A power-on-reset signal is generated when the supply voltage rises to a preset threshold level. The ADM6384's debounced manual reset input can be used to initiate a reset by means of an external push-button or logic signal. The part is available in a choice of the following 31 reset threshold options, from 1.58V to 5.0V. The minimum reset timeout periods are 1ms, 20ms, 140ms and 1120ms. The ADM6384 is available in a 4-lead SC70 package and typically consumes only 7A, making it suitable for use in low power portable applications
VCC MICROPROCESSOR SYSTEM RESET 100K
VCC
ADM6384
MR RESET
GND
GND
Figure 1. Typical ADM6384 Operating Circuit
Rev. PrC
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.326.8703 (c) 2004 Analog Devices, Inc. All rights reserved.
ADM6384 ADM6384--SPECIFICATIONS
Table 1. VCC=Full Operating Range, TA=-40oC to 125oC, unless otherwise noted
Parameter SUPPLY VCC Operating Voltage Range Supply Current Min 1 7 6 4 3 4.88 4.78 4.68 4.58 4.51 4.39 4.27 4.19 4.1 4.0 3.9 3.8 3.71 3.61 3.51 3.41 3.32 3.22 3.12 3.00 2.93 2.85 2.73 2.63 2.56 2.44 2.34 2.26 2.13 1.62 1.54 5.00 4.90 4.80 4.70 4.63 4.5 4.38 4.30 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.08 3.0 2.93 2.8 2.70 2.63 2.5 2.4 2.31 2.19 1.67 1.58 40 3 Typ Max 5.5 13 11 7 6 5.12 5.02 4.92 4.82 4.74 4.61 4.48 4.41 4.31 4.2 4.1 4.0 3.9 3.79 3.69 3.59 3.49 3.38 3.28 3.15 3.08 3.00 2.87 2.77 2.69 2.56 2.46 2.37 2.24 1.71 1.61
Preliminary Technical Data
Units V A A A A V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V ppm/C mV ms ms ms ms s V V
Test Conditions/Comments
VCC=5.5V, no load VCC=3.6V, no load VCC=2.5V, no load1 VCC=1.8V, no load1
RESET THRESHOLD VOLTAGE ADM6384_50_ ADM6384_49_ ADM6384_48_ ADM6384_47_ ADM6384_46_ ADM6384_45_ ADM6384_44_ ADM6384_43_ ADM6384_42_ ADM6384_41_ ADM6384_40_ ADM6384_39_ ADM6384_38_ ADM6384_37_ ADM6384_36_ ADM6384_35_ ADM6384_34_ ADM6384_33_ ADM6384_32_ ADM6384_31_ ADM6384_30_ ADM6384_29_ ADM6384_28_ ADM6384_27_ ADM6384_26_ ADM6384_25_ ADM6384_24_ ADM6384_23_ ADM6384_22_ ADM6384_17_ ADM6384_16_ RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD ADM6384_ _D1 ADM6384_ _D2 ADM6384_ _D3 ADM6384_ _D4 VCC to RESET DELAY RESET Output Voltage VOL
1 20 140 1120 35
2 40 280 2240
VCC falling at 10mV/s VCC>=1.0V, ISINK=80A VCC>=2.5V, ISINK=1.2mA
0.3 0.3
Rev. PrC | Page 2 of 6
Preliminary Technical Data
Parameter VOH RESET Rise Time MANUAL RESET INPUT MR Input Threshold VIL VIH MR Input Pulse Width MR Glitch Rejection MR Pull-up Resistance MR to Reset Delay
1
ADM6384
Min 0.8x VCC 0.8x VCC 5 25 Typ Max 0.4 Units V V V ns Test Conditions/Comments VCC>=4.5V, ISINK=3.2mA VCC>=2.5V, ISOURCE=500A VCC>=4.5V, I SOURCE=800A From 10% to 90% VCC, CL=5pF, VCC =3.3V
0.3xVCC 0.8 0.7xVCC 2.4 1 32 100 63 200 100
V V V V s ns k ns
VCC <4V VCC <4V VCC >4V VCC >4V
TA = 25oC Only
ABSOLUTE MAXIMUM RATINGS
Table 2. TA = 25C unless otherwise noted.
Parameter VCC RESET Output Current ( RESET) Operating Temperature Range Storage Temperature Range JA Thermal Impedance, SC70 Lead Temperature Soldering (10 sec) Vapour Phase (60 sec) Infrared (15 sec) Rating -0.3V to +6V -0.3V to +6V 20mA -40C to +125C -65C to +150C 146C/W 300C 215C 220C
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Rev. PrC | Page 3 of 6
ADM6384
Preliminary Technical Data
PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
GND 1 4 VCC
ADM6384
RESET 2 TOP VIEW (Not to Scale)
3
MR
Pin Configuration Table 3. Pin Functional Descriptions
Pin No. 1 2 3
Name GND RESET MR
4
VCC
Description Ground Active-Low Reset Output, which is asserted whenever VCC is below the reset.threshold, VTH. Push-Pull Output Stage. Manual Reset Input. This is an active-low input which, when forced low for at least 1s, generates a reset. Features a 52k internal pull-up. Power Supply Voltage being Monitored.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
Rev. PrC | Page 4 of 6
Preliminary Technical Data OUTLINE DIMENSIONS
1.35 1.15
4
ADM6384
2.20 1.80
3
2.40 1.80
1
2
PIN 1 0.65 BSC 1.00 0.80 0.50 BSC
1.10 0.80 0.18 0.10 0.30 0.10
0.10 MAX 0.30 0.15
SEATING 0.70 PLANE 0.50 0.10 COPLANARITY
P ACKAGE OUTLINE CORRESPONDS IN FULL TO EIAJ SC82 EXCEPT FOR WIDTH OF PIN-2 AS SHOWN
Figure 2. 4-Lead Plastic Surface Mount Package [SC70] (KS-4) Dimensions shown in millimeters
Rev. PrC | Page 5 of 6
ADM6384
ORDERING GUIDE Table 1. ADM6384 Ordering Guide
Preliminary Technical Data
ADM6384YKS__D_-RL7
GENERIC NUMBER TEMPERATURE RANGE Y: -40oC TO +125oC PACKAGE CODE KS: 4-LEAD SC70 ORDERING QUANTITY RL7: 3,000 PIECE REEL
PR05305-0-12/04(PrC)
RESET TIMEOUT PERIOD 1: 1ms (min) 2: 20ms (min) 3: 140ms (min) 4: 1120ms (min) RESET THRESHOLD NUMBER (16 TO 50)
Figure 2. Ordering Code Structure
Model1,2 ADM6384YKS26D3-R7 ADM6384YKS29D3-R7 ADM6384YKS29D1-R7 ADM6384YKS23D3-R7
2
Reset Threshold (V) 2.63 2.93 2.93 2.31
Reset Timeout (ms) 140 140 1 140
Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C
Quantity 3k 3k 3k 3k
Package Type SC70-4 SC70-4 SC70-4 SC70-4
Branding N0J N0J N0J N0J
1 2
Complete the ordering code by inserting reset timeout, and reset threshold suffixes from Table 1. Contact Sales for the availability of nonstandard models.
Rev. PrC | Page 6 of 6
This datasheet has been download from: www..com Datasheets for electronics components.

▲Up To Search▲

Price & Availability of ADM6384

	To Download ADM6384 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .