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MC33064LPT View Datasheet(PDF) - Microsemi Corporation

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MC33064LPT
Microsemi
Microsemi Corporation Microsemi
MC33064LPT Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
PRODUCT DATABOOK 1996/1997
MC33064/MC34064
TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
T Y P I C A L A P P L I C A T I O N C I R C U I T S (Cont'd.)
FIGURE 19. — LOW VOLTAGE MICROPROCESSOR RESET
with ADDITIONAL HYSTERESIS
RH
IIN
VIN
POWER
SUPPLY
1.2 VREF
RL
RESET
MICROPROCESSOR
CIRCUIT
VH =
4.6 RH
RL
+ 0.02
VTH (LOWER) = 340 RH x 10-6
Where: RH 150
RL 1.5Ω ≤ 10k
Comparator hysteresis can be increased with the addition of resistor RH. The
hysteresis equation has been simplified and does not account for the change of
input current I as V crosses the comparator threshold. An increase of the
IN
CC
lower threshold VTH (LOWER) will be observed due to IIN which is typically 340µA at
4.59V. The equations are accurate to ±10% with RH less than 150and RL
between 1.5kand 10k.
TEST DATA
VH VTH RH
RL
(mV) (mV) () ()
20 0 0 0
51 3.4 10 1.5
40 6.8 20 4.7
81 6.8 20 1.5
71 10 30 2.7
112 10 30 1.5
100 16 47 2.7
164 16 47 1.5
190 34 100 2.7
327 34 100 1.5
276 51 150 2.7
480 51 150 1.5
FIGURE 20. — SOLAR POWERED BATTERY CHARGER
VIN
1.2 VREF
RESET
SOLAR
CELLS
10
PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document
may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of
all parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.
Copyright © 1999
Rev. 1.3 6/99
 

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