NCP1294EDTB16G datasheet(4/13 Pages) ONSEMI

Part #	NCP1294EDTB16G

Description	Enhanced Voltage Mode PWM Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP1294

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ELECTRICAL CHARACTERISTICS (−40°C < TA < 85°C; −40°C < TJ < 125°C; 3.0 V < VC < 15 V; 4.7 V < VCC < 15 V;

RT = 12 k; CT = 390 pF; unless otherwise specified.)

Characteristic

Unit

Max

Typ

Min

Test Conditions

Reference Voltage

Total Accuracy

0 mA < IREF < 2.0 mA

3.2

3.3

3.4

V

Line Regulation

−

6.0

20

mV

Load Regulation

0 mA < IREF < 2.0 mA

−

6.0

15

mV

Noise Voltage

10 Hz < F < 10 kHz. Note 2

−

50

−

mV

Op Life Shift

T = 1000 Hrs. Note 2

−

4.0

20

mV

Fault Voltage

−

2.8

2.95

3.1

V

VREF(OK) Voltage

−

2.9

3.05

3.2

V

VREF(OK) Hysteresis

−

30

100

150

mV

Current Limit

−

2.0

40

100

mA

Error Amp

Reference Voltage

VFB = COMP

1.234

1.263

1.285

V

VFB Input Current

VFB = 1.2 V

−

1.3

2.0

mA

Open Loop Gain

Note 2

60

−

dB

Unity Gain Bandwidth

Note 2

1.5

−

MHz

COMP Sink Current

COMP = 1.4 V, VFB = 1.45 V

3.0

12

32

mA

COMP Source Current

COMP = 1.4 V, VFB = 1.15 V

1.0

1.6

2.0

mA

COMP High Voltage

VFB = 1.15 V

2.8

3.1

3.4

V

COMP Low Voltage

VFB = 1.45 V

75

125

300

mV

PSRR

Freq = 120 Hz. Note 2

60

85

−

dB

SS Clamp, VCOMP

SS = 1.4 V, VFB = 0 V, ISET = 2.0 V

1.3

1.4

1.5

V

COMP Max Clamp

Note 2

1.7

1.8

1.9

V

Oscillator

Frequency Accuracy

−

260

273

320

kHz

Voltage Stability

−

1.0

2.0

%

Temperature Stability

−40°C < TJ < 125°C. (Note 2)

−

8.0

−

%

Max Frequency

Note 2

1.0

−

MHz

Duty Cycle

−

80

85

90

%

Peak Voltage

Note 2

1.94

2.0

2.06

V

Valley Clamp Voltage

−

0.9

0.95

1.0

V

Valley Voltage

Note 2

0.85

1.0

1.15

V

Discharge Current

−

0.85

1.0

1.15

mA

Synchronization

Input Threshold

−

0.9

1.4

1.8

V

Output Pulse Width

−

200

320

450

ns

Output High Voltage

100 mA Load

2.1

2.5

2.8

V

Input Resistance

−

35

70

140

kW

SYNC to Drive Delay

Time from SYNC to GATE Shutdown

100

140

180

ns

Output Drive Current

RSYNC = 1.0 W

1.0

1.5

2.25

mA

2. Guaranteed by design, not 100% tested in production.

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