Monolithic Linear L78LR05 150mA, 5-Pin Voltage Regulator wit

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Monolithic Linear L78LR05 150mA, 5-Pin Voltage Regulator wit

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Ordering number:ENN2622B
Monolithic Linear
L78LR05
150mA, 5-Pin Voltage Regulator with Reset Function
Overview
L78LR05 voltage regulator that performs reset signal generating function when power supply microcomputer system turned ON/OFF. L78LR05 convenient battery backup system time power failure. reset threshold voltage ranked shown below.
rank
Package Dimensions
unit:mm 3103
[L78LR05]
Applications
Prevention malfunction that occur when power supply microcomputer turned ON/OFF. Measures taken against abnormal operations that occur time instantaneous break power supply. Direct battery backup SRAM.
INPUT DELAY CAPACITOR RESET OUTPUT OUTPUT SANYO TP-5H
Features
150mA output. Capable generating microcomputer reset signal. battery-regulator switching circuit required battery backup mode (Output leakage current less). external capacitor used reset output delay time. Applicable power supply CMOS, NMOS microcomputers. Especially suited on-board regulator microcomputer system. Small-sized power package TP-5H permitting equipment made compact. allowable power dissipation increased being surface-mounted board. Capable being mounted variety methodes because various lead forming versions available. On-chip protectors (overcurrent limiter, protector, thermal protector).
SANYO products described contained herein have specifications that handle applications that require extremely high levels reliability, such life-support systems, aircraft's control systems, other applications whose failure reasonably expected result serious physical and/or material damage. Consult with your SANYO representative nearest before using SANYO products described contained herein such applications. SANYO assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges,or other parameters) listed products specifications SANYO products described contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D1599TH No.2622-1/6
L78LR05 Specifications
Maximum Ratings 25°C
Parameter Maximum Input Voltage Allowable Power Dissipation Operating Temperature Storage Temperature Symbol Topr Tstg fin) Conditions Ratings +150 Unit
Operating Conditions 25°C
Parameter Input Voltage Output Current Symbol IOUT Conditions Ratings Unit
Operating Characteristics 25°C, VIN=10V, IOUT=40mA, cin=1F, co=10F
Parameter Output Voltage Line Regulation Load Regulation Current Dissipation Current Dissipation Variation Output Noise Voltage Temperature Coeffieient Output Voltage Ripple Rejection Dropout Voltage Output Short Current "-Reset Output Voltage "L"-Reset Output Voltage Symbol VOUT1 Conditions Ratings 4.75 0.12 0.01 4.60 4.30 4.00 3.70 3.40 3.10 2.80 cd=0.1F VIN=0, Vo=6V VIN=0, VOR=6V 0.001 0.001 4.95 4.65 4.35 4.05 3.75 3.45 3.15 12.5 5.25 Unit
Tj=25°C
VOUT2 7VVIN20V, 1mAIOUT70mA LINE1 Tj=25°C, 7VVIN20V LINE2 Tj=25°C, 8VVIN20V
LOAD1 Tj=25°C, 1mAIOUT100mA LOAD2 Tj=25°C, 1mAIOUT40mA
LINE
LOAD
Tj=25°C, IOUT=100mA
8VVIN20V 1mAIOUT40mA
10Hzf100kHz, Io=1mA VOUT/Tj IOUT=1mA, Tj=25 125°C Rrej Tj=25°C, f=120Hz, 8VVIN18V VDROP IOSC VORH VORL
mV/°C
Tj=25°C Tj=25°C Tj=25°C Tj=25°C, VIN=3V, Io=1mA Tj=25°C Tj=25°C Tj=25°C
Reset Threshold Voltage
Tj=25°C Tj=25°C Tj=25°C Tj=25°C
Reset Threshold Hysteresis Voltage Reset Output Dely Time Output Leakage Current Reset Output Leakage Current
VRTH LEAK LEAK
Equivalent Circuit Block Diagram
No.2622-2/6
L78LR05
Sample Application Circuit
Note When capacitance large, capacitor discharge completely, causing made shorter than value. this problem, either connect high speed diode (DS442) between pin2 (anode side) pin5 (cathode side) ensure adequate discharge time using values capacitors such that Cin>Cd. Note pull-up resistor connected reset output externally, possible cause sink current flow.
Reset Operation
Sample Application Circuit (Direct battery backup)
Since leakage current output (pin5) L78LR05 less, backup circuit implemented connectiong electric double layer capacitor (super capacitor NEC, gold capacitor Matsushita Electric) battery direct output pin. Since reverse blocking diode, which been connected output pin, required, regulated power-supply voltage supplied load during steady-state operation, without voltage drop caused diode effects temperature characteristics, current characteristics diode. battery-regulator switching circuit required battery backup start mode.
Note capacitance reset output signal delay capacitor must exceed that input capacitor Cin. capacitance small, reset pulse signal generated once when main power source turned battery backup start mode). No.2622-3/6
L78LR05
Allowable Power Dissipation allowable power dissipation 1.0V (Ta=25°C) with attached. When L78LR05 surface-mounted hybrid board printed circuit board, high allowable power dissipation obtained, though placed small-sized package. Shown below relationship between Cu-foiled area allowable power dissipation when L78LR05 surface-mounted glass epoxy boad
measured values represent values measured when solder Cu-foiled area wet. Lead Forming
forming forming
forming
No.2622-4/6
L78LR05
No.2622-5/6
L78LR05
Specifications SANYO products described contained herein stipulate performance, characteristics, functions described products independent state, guarantees performance, characteristics, functions described products mounted customer's products equipment. verify symptoms states that cannot evaluated independent device, customer should always evaluate test devices mounted customer's products equipment. SANYO Electric Co., Ltd. strives supply high-quality high-reliability products. However, semiconductor products fail with some probability. possible that these probabilistic failures could give rise accidents events that could endanger human lives, that could give rise smoke fire, that could cause damage other property. When designing equipment, adopt safety measures that these kinds accidents events cannot occur. Such measures include limited protective circuits error prevention circuits safe design, redundant design, structural design. event that SANYO products(including technical data,services) described contained herein controlled under applicable local export control laws regulations, such products must expor without obtaining expor license from authorities concerned accordance with above law. part this publication reproduced transmitted form means, electronic mechanical, including photocopying recording, information storage retrieval system, otherwise, without prior written permission SANYO Electric Co., Ltd. information described contained herein subject change without notice product/technology improvement, etc. When designing equipment, refer "Delivery Specification" SANYO product that intend use. Information (including circuit diagrams circuit parameters) herein example only guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties.
This catalog provides information December, 1999. Specifications information herein subject change without notice.
No.2622-6/6

Monolithic Linear L78LR05 150mA, 5-Pin Voltage Regulator wit

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