STR3A151D datasheet(4/14 Pages) ALLEGRO

4 / 14 page

SANKEN ELECTRIC CO., LTD.

STR3A150D-DS

July 20, 2012

PWM Off-Line Switching Regulator ICs

STR3A151D, STR3A152D,

STR3A153D, STR3A154D,

STR3A155D

Electrical Characteristics of Control Part Unless specifically noted, TA is 25°C, VCC = 18 V

Characteristic

Symbol

Test Conditions

Pins

Min.

Typ.

Max.

Unit

Operation Start Voltage

VCC(ON)

2 – 3

13.8

15.3

16.8

Operation Stop Voltage*

VCC(OFF)

2 – 3

7.3

8.1

8.9

Circuit Current in Operation

ICC(ON)

VCC = 12 V

2 – 3

−−

2.5

Minimum Start Voltage

VST(ON)

8 – 3

−

Startup Current

ISTARTUP

VCC = 13.5 V

2 – 3

−3.9

−2.5

−1.1

Startup Current Threshold Biasing

Voltage*

VCC(BIAS)

2 – 3

8.5

9.5

10.5

Average Operation Frequency

fOSC(AVG)

8 – 3

kHz

Frequency Modulation Deviation

Δf

8 – 3

−

kHz

Maximum Duty Cycle

DMAX

8 – 3

Leading Edge Blanking Time

tBW

–

−

350

−

OCP Compensation Coefficient

DPC

–

−

mV/μs

OCP Compensation Duty Cycle Limit

DDPC

−−

−

OCP Threshold Voltage at

Zero Duty Cycle

VOCP(L)

1 – 3

0.69

0.78

0.87

OCP Threshold Voltage at

36% Duty Cycle

VOCP(H)

1 – 3

0.79

0.88

0.97

Maximum Feedback Current

IFB(MAX)

4 – 3

−110

−70

−35

μA

Minimum Feedback Current

IFB(MIN)

4 – 3

−30

−15

−7

μA

FB/OLP Oscillation Stop Threshold

Voltage

VFB(OFF)

STR3A151D

STR3A152D

STR3A153D

VCC = 32 V

4 – 3

1.09

1.21

1.33

STR3A154D

STR3A155D

VCC = 32 V

4 – 3

0.85

0.98

1.09

OLP Threshold Voltage

VFB(OLP)

VCC = 32 V

4 – 3

7.3

8.1

8.9

OLP Operation Current

ICC(OLP)

VCC = 12 V

2 – 3

−

230

−μA

OLP Delay Time

tOLP

–

547086

FB/OLP Clamp Voltage

VFB(CLAMP)

4 – 3

11.0

12.8

14.0

OVP Threshold Voltage

VCC(OVP)

2 – 3

27.5

29.5

31.5

Thermal Shutdown Activating

Temperature

TJ(TSD)

−

135

−−

°C

*VCC(BIAS) > VCC(OFF) always.

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