SANKEN ELECTRIC CO., LTD.

Description

STR3A100 series are power ICs for switching power supplies,

incorporating a power MOSFET and a current mode PWM

controller IC in one package.

Including a startup circuit and a standby function in the

controller, the product achieves low power consumption, low

standby power, and high cost-effectiveness in power supply

systems, while reducing external components.

The products are provided in an industry standard DIP8

package.

Features and Benefits

• Current mode PWM control

• Built-in Random Switching function: reduces

EMI noise, simplifies EMI filters, and cuts cost by

external part reduction

• Built-in Slope Compensation function: avoids

subharmonic oscillation

• Built-in Leading Edge Blanking (LEB) function

• Auto Standby function:

consumption shunt regulator

▫ Normal load operation: PWM switching

▫ Light load operation: Standby mode (Burst oscillation)

PWM Off-Line Switching Regulator ICs

Typical Application

Package: DIP8

Not to scale

STR3A161HD, STR3A162HD, STR3A163HD

Continued on the next page…

STR3A160HD-DS

Applications

Switching power supplies for electronic devices such as:

• Stand-by power supply for LCD/PDP television,

desktop PC, multi-function printer, audio equipment,

and so forth

• Small switched-mode power supply (SMPS) for printer,

BD/DVD player, set-top box, and so forth

• Auxiliary power supply for air conditioner, refrigerator,

washer, dishwasher, and so forth

July 20, 2012

VAC

C1

C5

R3

D3

D2

R2

C2

T1

D4

C6

R4

R5

U2

R9

R7

C7

D

P

S

PC1

PC1

C3

C9

CRD Snubber Circuit

D1

R6

R8

L2

C8

C, RC

Damper

Snubber

Circuit

VOUT

GND

C4

12

34

D/ST D/ST

VCC

NC

S/OCP

FB/OLP

GND

D/ST D/ST

87

65

STR3A100

U1