Sanyo STK750-010 Specifications

Ordering number : ENN4421

92099RM (OT)/31293YO 5-3108 No. 4421-1/9

Overview

These days, the variety of horizontal frequencies output
from personal computers (PCs) include 15 kHz, 24 kHz,
31 kHz and even 33 kHz. These differences are dependent
on the device and maker, and the market itself contains
many PCs and a wide array of frequencies; in other word,
the need to remain compatible is stronger then ever. As
the number of video signal formats created with new­media devices becomes more diversified, the search for
circuit technology capable of supporting such a wide
range of scanning frequencies (multiscan support)
becomes even harder.

The STK750-010 is a chopper regulator using MOS FET
with multi-scan support. This IC is also designed for
output voltage variable control supporting a wide range of
horizontal frequencies. For these reasons, the STK750­010 helps reduce streamlined power supply designs,
shorten overall development time, and reduce total costs
while providing high-precision CRT display performance
with the highest quality.

Applications

• Multi-scan supporting CRT displays (secondary voltage
variable regulator)

Features

• High efficiency (97%) provided by power MOS FET.
Compared with bi-polar chopper regulators used until
now, power dissipation is less than half while supporting
compact heat sink and lighter weight design.

• Multi-scan support (output voltage variability).
Supports horizontal frequency external control.

• Wider output voltage control range (50 to 130 V),
compared with dropper type ICs used until now. The
resonance condenser changeover circuit and the vertical
dummy coil changeover circuit of horizontal deflection
coil are eliminated within the horizontal autoscan
circuit.

• IC operating frequency supports horizontal frequency
synchronization.

• Standard chopper type eliminates need for complicated
transformers and supports choke coil applications.

Package Dimensions

unit: mm

4136

115

46.6

41.2

12.7

25.5

(6.6)

2.0

×

14 = 28.0

0.5

2.0

12.0

8.5

0.4

5.2

4.0 20.0

AAAA

A = 4.0

3.6

[STK750-010]

STK750-010

SANYO Electric Co.,Ltd. Semiconductor Company

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

Chopper Regulator using MOS FET with Multi-Scan

Support (1 A Output Current)

Thick Film Hybrid IC

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.

No. 4421-2/9

STK750-010

Parameter Symbol Conditions Ratings Unit
Maximum DC input voltage Vin (DC) max 190 V
Maximum output current Io max 1 A
Thermal resistance θj-c 2.5 °C/W
Junction temperature Tj max 150 °C
Operating substrate temperature Tc max 105 °C
Storage temperature Tstg –30 to +105 °C

Specifications

Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
V

IN

voltage Vin 165 to 175 V

V

CC

voltage V

CC

11 to 13 V

Error amplifier input voltage Vamp 7 pin –0.3 to V

CC

–2 V

Timing condenser G

T

4 pin 0.47 to 10000 nF

Timing resistor R

T

3 pin 1.8 to 500 kΩ

Oscillation frequency f

OSC

20 to 100 kHz

Maximum duty D max 90 %

Recommended Operating Conditions at Ta = 25°C

Parameter Symbol Conditions

Ratings

Unit

min typ max
Output voltage Vo Vin (DC) = 170V, Io = 0.5A 130±1.5 V
Input regulaton Reg-IN Vin (DC) = 160 to 180V, Io = 0.5A 0.05 V/V
Load regulation Reg-L Vin (DC) = 170V, Io = 0.2 to 1A 0.5 V/A
Efficiency η Vin (DC) = 170V, Io = 0.5A 97 %
Output voltage temperature coefficient T

CVO

Vin (DC) = 170V, Io = 0.5A 17 mV/°C

Operating Characteristics at Ta = 25°C, see specified Test Circuit, f = 50kHz

Block Diagram

No. 4421-3/9

STK750-010

Application Circuit Block Diagram