Green-Mode PWM Controller

ST6850

300mA Driving Capability

ELECTRICAL CHARACTERISTICS (Ta=25℃, Vcc=15V, unless otherwise specified.)

Symbol

Parameter

Coneitions

Min.

Typ. Max. Unit

Supply Voltage ( Vcc Pin )

Istt

Startup Current

8

25

uA

Iop

Operating Current

Vcomp=3V

2

4

mA

UVLO(off) Min. Operatinf Voltage

9.0

10.0

11.0

V

UVLO(on)

Start Threshold Voltage

15.0

16.0

17.0

V

Voltage Feedback ( Comp Pin )

Isc

Short Circuit Current

2.2

3.0

mA

Vop

Open Loop Voltage

5.0

V

Vth(gm)

Green Mode Threshold VCOMP

2.35

V

Oscillator ( RT Pin )

Fosc

Frequency

Rt=100KΩ

60.0

65.0

70.0

KHz

Fosc(gm)

Green Mode Frequency

Fs=65.0KHz

20

KHz

Fdt

Frequency Variation versus Temp

Deviation

(-40

℃~105℃)

3

%

Fdv

Frequency Variation versus

Vcc Deviation

(Vcc=11V ~ 25V)

1

%

Current Sensing ( CS Pin )

Vcs(off)

Maximum Input Vlotage

0.8

0.85

0.9

V

Zcs

Input impedance

50

KΩ

Tpd

Delay to Output

150

nS

Gate Driver Output ( OUT pin )

VOL

Output Low level

Vcc=15V,

Io=20mA

1

V

VOH

Output High Level

Vcc=15V,

Io=20mA

8

V

Tr

Rising Time

Load Cap=1000pF

50

200

nS

Tf

Falling Time

Load Cap=1000pF

30

120

nS

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STANSON TECHNOLOGY

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