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PDF STK7561J Data sheet ( Hoja de datos )
| Número de pieza | STK7561J | |
| Descripción | Chopper Type Parallel 2-Output Voltage Regulators | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number:ENN1773
Thick Film Hybrid IC
STK7560 Series
Chopper Type Parallel 2-Output
Voltage Regulators
Applications
• Voltage regulator for printers, electronic typewriters, XY
plotters.
• Voltage re gulator for MSX per sonal computer s, flopp y
disk drive, computer terminals, por table VTRs.
Features
• ICs ha ving 2 outputs for microcomputer po wer suppl y
(5V) and motor drive power supply (12, 15, 24, 36V) and
being capable of deli vering 2 r egulated outputs fr om 1
rectifier.
• Good efficiency due to chopper type and no bea t trouble
due to fixed oscillation type oscilla tor common to 2 out-
puts.
• Independent o vercurrent protectors f or 2 outputs (F old-
back characteristics).
• Output 2 (drive power supply) can be turned ON/OFF by
external signal. Two outputs can be also turned ON/OFF
simultaneously by an e xternal cir cuit connected (Refer
to Sample Application Circuit).
• High-precision setting of output v oltage, elminating the
need to use a variable resistor for adjustment.
• Input/output Gnd lines are united into one, f acilatating
combination with other nag ative power supply.
• A negative voltage regulator (–5V, –12V, etc.) can be con-
nected externally (Refer to Sample Application Circuit).
• Output voltage/output current are provided in series.
Package Dimensions
unit:mm
4049
[STK7560 Series]
64.0
55.6
3.6
1
(6.28)
2.54
17×2.54=43.18
18
0.5
unit:mm
4050
[STK7560 Series]
64.0
55.6
3.6
1
(6.21)
18
2.54 0.5
17×2.54=43.18
unit:mm
4051A
[STK7560 Series]
78.0
70.0
8.5
0.4
2.9
SANYO : SIP18
8.5
0.4
2.9
SANYO : SIP18
9.0
3.6
(13.41)
1 18
2.54 0.5
17×2.54=43.18
0.4
2.9
SANYO : SIP18
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
N0199TH (KT)/D077AT, TS No.1773–1/13
http://www.Datasheet4U.com
1 page  
STK7560 Series
Sample Application Circuit 4 : STK7563F : 3 outputs of 5V, 24V, –12V
Sample Application Circuit 5 : STK7561A : Power supply for MSX personal computer,
2-output simultaneous ON/OFF
Sample Overvoltage Protector
Overcurrent may cause great damege. Particulary, the circuit connected to microcomputer power supply (5V) may be
damaged.
Shown below is a method to prevent this damage.
Connect a zener diode in parallel with the load. Use a DHD (double heat sink) type zener diode whose zener voltage is
1 to 2V higher than supply voltage (5V).
Overvoltage exceeding the zener voltage is limited by the zener diode .
With no current limiting rersistor connected, overcurrent flows in the zener diode.
Then, zener diode is shorted, thus protecting the load.
No.1773–5/13
5 Page 
STK7560 Series
where Tj max=150°C, Pd : Power dissipation PT1, PF1, PT2, PF2 in each element,
θjc=Junction-case thermal resistance in each element.
Type No.
ST9K7560A
Teable of Thermal Resistanc θjc
O2UTPUT 1
OUTPUT
T3R1 D6 TR4
D
45. 192.
4.5 12.
STK7560F
STK7560G
45.7 172. 25. 5.
S7TK7560J
25. 57. 45. 12.
To dessipate heat satisfactorily, use a heat sink with thermal resistance θca meeting two temperature conditions of
Tc max=105°C, Tj max=105°C.
Since the actual thermal resistance of the heat sink
greatly depends on various conditions such as equip-
ment layout or ventilation, allow an ample margin in
thermal design. Shown right is the relation between Al
heat sink area and thermal resistance . The Al surface
coated with black improves thermal characteristic,
lowering thermal resistance approximately 20% as
compared with the Al heat sink of the same area.
Description of Operation of Internal Blocks
[OSC]
External excitation type OSC circuit where the CMOS NAND
gate-used ring OSC is formed by the 2-stage NAND circuit,
delivering basic pulses. This circuit provides pulse width modula-
tion where the frequency is constant and the duty only varies.
[PWM]
Pulse width modulation (PWM) is provided by differentiating the
output of NAND gate 2 using the differentiating circuit of time
constant CR as shown left and by applying the result to the input of
NAND gate 3.
The threshold voltage at the input of NAND gate 3 is approxi-
mately 1/2 of supply voltage VDD applied to the gate and the PWM
output as shown below is obtained.
No.1773–11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet STK7561J.PDF ] | |
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