Sanyo STK795 Specifications

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.

Thick Film Hybrid IC

Chopper T ype V oltage Regulator

Ordering number:ENN1709C

STK795

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Features

• Self-oscillation type chopper regulator power IC using
Sanyo’s original IMST (Insulated Metal Substrate Tech­nology) substrate.

• The STK795, being a 5V chopper IC, is more advanta­geous in the following points as compared with series
regulator (dropper type) ICs.

1. Possible to provide a 5V output power supply circuit
with high efficiency.

2. Since the input voltage range is wide, no more than
one rectifying/smoothing circuit is required to pro­vide a multi-output power supply circuit which also
delivers 12V or 24V output.

• Functional trimming is used to set 5V output with high
accuracy.

• Cutoff function to cut off output voltage by external sig­nal.

• Contains a transistor for overcurrent protector (foldback
characteristic) and possibel to set the protection level ex­ternally.

Specifications

Maximum Ratings at Ta = 25˚C

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egatloVtupnICDmumixaM

tnerruCtuptuOmumixaMI

erutarepmeTetartsbuSgnitarepOcT 501

erutarepmeTnoitcnuJjT 051

erutarepmetegarotSgtsT 501+ot03–

V

xam

)CD(ni

xam 3A

O

Package Dimensions

unit:mm

4063A

[STK795]

53.0

116

2.54
15×2.54=38.1

0.5

25.5

9.0

1.0

0.4

4.0

SANYO : SIP16

2.9

04V

˚C
˚C
˚C

Operating Characteristics at Ta = 25˚C, See specified Test Circuit.

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egatloVtuptuOV

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noitalugeRdaoLV

ycneiciffEV

ycneuqerFfV

tneiciffeoCerutarepmeTV

V

O

I,V21=

NI
NI
NI
NI
NI
NI

A5.1=9.40.51.5V

O

I,V51ot01=

A5.1=07001Vm

O

I,V21=

O

I,V21=

O

I,V21=

O

I,V21=

O

A3ot5.0=0306Vm
A5.1=27%
A5.1=53zHk
A5.1=1

O2099TH (KT)/21094YK/O199TA/5236KI, TS No.1709–1/5

sgnitaR

nimpytxam

tinU

mV/˚C

Equivalent Circuit

Test Circuit

STK795

Note) · D1 : Schottky barrier diode SB40-05.

· B. C. : Beads core, 2 to 3µH.

· C3, B. C. are used to reduce switching spike noise.

· TR1 is used to provide overcurrent protection.
If no protection is required, remove TR1.

· A current of 0.5A min. must flow in the load.

No.1709–2/5