CM6800AXISTR datasheet(5/18 Pages) CHAMP

Part #	CM6800AXISTR

Description	LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO

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Manufacturer	CHAMP [Champion Microelectronic Corp.]

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CM6800A

LOW START-UP CURRENT PFC/PWM CONTROLLER COMBO

2009/08/10 Rev. 1.6

Champion Microelectronic Corporation

Page 5

ELECTRICAL CHARACTERISTICS (Conti.) Unless otherwise stated, these specifications apply

Vcc=+15V, RT =30.16kΩ, CT = 1000pF, TA=Operating Temperature Range (Note 1)

CM6800A

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Sink Current

ISENSE = +0.6V, IEAO = 4.0V

-65

-35

μ A

Source Current

ISENSE = -0.6V, IEAO = 1.5V

35

75

μ A

Open Loop Gain

60

70

dB

Power Supply Rejection Ratio

11V < VCC < 16.5V

60

75

dB

PFC OVP Comparator

Threshold Voltage

2.70

2.77

2.85

V

Hysteresis

230

300

mV

Low Power Detect Comparator

Threshold Voltage

0.2

0.3

0.4

V

VCC OVP Comparator

Threshold Voltage

17.5

17.9

18.5

V

Hysteresis

1.40

1.5

1.65

V

Tri-Fault Detect

Fault Detect HIGH

2.65

2.75

2.85

V

Time to Fault Detect HIGH

VFB=VFAULT DETECT LOW to

VFB=OPEN.470pF from VFB to GND

2

4

ms

Fault Detect LOW

0.4

0.5

0.6

V

PFC ILIMIT Comparator

Threshold Voltage

-1.10

-1.00

-0.90

V

(PFC ILIMIT VTH – Gain Modulator

Output)

20

100

mV

Delay to Output (Note 4)

Overdrive Voltage = -100mV

250

ns

DC ILIMIT Comparator

Threshold Voltage

0.95

1.0

1.05

V

Delay to Output (Note 4)

Overdrive Voltage = 100mV

250

ns

VIN OK Comparator

OK Threshold Voltage

2.16

2.25

2.36

V

Hysteresis

0.9

1.1

1.3

V

GAIN Modulator

IAC = 100

μ A, V

RMS =0, VFB = 1V

at room temp

0.70

0.84

0.95

IAC = 100

μ A, V

RMS = 1.1V, VFB = 1V

at room temp

1.80

2.00

2.20

IAC = 150

μ A, V

RMS = 1.8V, VFB = 1V

at room temp

0.90

1.00

1.10

Gain (Note 3)

IAC = 300

μ A, V

RMS = 3.3V, VFB = 1V

at room temp

0.25

0.32

0.40

Bandwidth

IAC = 100

μ A

10

MHz

Output Voltage =

3.5K*(ISENSE-IOFFSET)

IAC = 250

μ A, V

RMS = 1.1V, VFB = 1V

0.84

0.90

0.95

V

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