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STR-W605XS

Current Mode Control PWM Regulator IC For Switching Power Supplies

Sanken Electric co.,ltd. 

STR-W605xS

Current Mode Control PWM Regulator IC

For Switching Power Supplies

Electrical Characteristics1 Valid at VCC = 18 V, TA = 25°C, unless otherwise specified

Characteristic

Symbol Terminal Min.

Operation Start Voltage

Operation Stop Voltage2

VCC(ON)

VCC(OFF)

4–5

4–5

13.8

7.3

Circuit Current in Operation

Minimum Startup Voltage

ICC(ON)

4–5

–

VST(ON)

4–5

–

Startup Current

Startup Current Supply Threshold Voltage2

Average Switching Frequency

ISTARTUP

VCC(BIAS)

fOSC(av)

4–5

4–5

1–5

–3.9

8.5

60

Switching Frequency Variance Range

∆f

1–5

–

Maximum Duty Cycle

DMAX

1–5

63

Leading Edge Blanking Time

tBW

–

–

OCP Compensation Coefficient

Maximum Duty Cycle for OCP Compensation

DPC

–

–

DDPC

–

–

OCP Threshold Voltage at Zero Duty Cycle

VOCP(L)

3–5

0.70

OCP Threshold Voltage at 36% Duty Cycle

Maximum Feedback Current

VOCP(H)

IFB(MAX)

3–5

6–5

0.79

–340

Minimum Feedback Current

IFB(MIN)

6–5

–30

Oscillation Stop FB/OLP Voltage

VFB(OFF)

6–5

0.85

OLP Threshold Voltage

VFB(OLP)

6–5

7.3

Operation Current After OLP

ICC(OLP)

4–5

–

OLP Delay Time

tOLP

1–5

54

FB/OLP Terminal Clamp Voltage

VFB(CLAMP)

6–5

11

Brown-In Threshold Voltage

Brown-Out Threshold Voltage

VBR(IN)

VBR(OUT)

7–5

7–5

5.2

4.45

BR Terminal Clamp Voltage

VBR(CLAMP)

7–5

6

BR Function Disabling Threshold

VBR(DIS)

7–5

0.3

OVP Threshold Voltage

VCC(OVP)

4–5

26

Thermal Shutdown Operating Temperature

TJ(TSD)

–

130

1Current characteristics are defined based on IC as sink ( +), or source ( –).

2VCC(BIAS) > VCC(OFF).

Typ.

15.3

8.1

–

40

–2.5

9.5

67

5

71

390

18

36

0.78

0.88

–230

–15

0.95

8.1

300

68

12.8

5.6

4.8

6.4

0.48

29

–

Max.

16.8

8.9

2.5

–

–1.1

10.5

74

–

79

–

–

–

0.86

0.97

–150

–7

1.05

8.9

–

82

14

6

5.15

7

0.7

32

–

MOSFET Electrical Characteristics Valid at TA = 25°C, unless otherwise specified

Characteristic

Symbol

Device

Terminal Min.

Typ.

Max.

Unit

Drain-to-Source Breakdown Voltage

VDSS

–

1–3

650

–

–

V

Drain Leakage Current

IDSS

–

1–3

–

STR-W6051S 1 – 3

–

–

300

μA

–

3.95

Ω

On-Resistance

RDS(on) STR-W6052S 1 – 3

–

–

2.8

Ω

STR-W6053S 1 – 3

–

–

1.9

Ω

Switching Time

tf

–

1–3

–

–

250

ns

STR-W6051S

–

–

–

2.63

°C/W

Thermal Resistance*

RθchF STR-W6052S

–

–

–

2.26

°C/W

STR-W6053S

–

–

–

1.95

°C/W

*Between channel and internal frame.

Unit

V

V

mA

V

mA

V

kHz

kHz

%

ns

mV/μs

%

V

V

μA

μA

V

V

μA

ms

V

V

V

V

V

V

°C

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