NCP1215 datasheet(4/16 Pages) ONSEMI

No. de pieza	NCP1215

Descripción Electrónicos	Low Cost Variable OFF Time Switched Mode Power Supply Controller

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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NCP1215

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ELECTRICAL CHARACTERISTICS (VCC = 12 V, for typical values Tj = 25°C, for min/max values Tj = 0°C to +105°C, unless

otherwise noted.)

Characteristic

Symbol

Min

Typ

Max

Unit

VOLTAGE FEEDBACK

Offset Voltage

Voffset

1.05

1.19

1.34

V

Maximum CT Pin Voltage at FB Current = 25

mA (Including Voffset)

VCT−25mA

2.4

3.1

4.3

V

Maximum CT Pin Voltage at FB Current = 50

mA (Including Voffset)

VCT−50mA

3.6

4.6

6.2

V

CT PIN − OFF TIME CONTROL

Source Current (CT Pin Grounded)

ICT

8.0

9.8

11.5

mA

Source Current Maximum Voltage Capability

VCT−max

−

6.5

−

V

Minimum CT Pin Voltage (Pin Unloaded, Discharge Switch Turned On)

VCT−min

−

20

mV

CURRENT SENSE

Minimum Source Current (IFB = 180 mA, CT Pin Grounded)

ICS−min

8.0

12.5

16

mA

Maximum Source Current (IFB = 0 mA, CT Pin Grounded)

ICS−max

40

49

58

mA

Comparator Threshold Voltage

Vth

15

42

80

mV

Propagation Delay (CS Falling Edge to Gate Output)

tdelay

−

215

310

ns

GATE DRIVE

Sink Resistance (Isink = 30 mA)

ROL

25

40

90

W

Source Resistance (Isource = 30 mA)

ROH

60

80

130

W

POWER SUPPLY

VCC Startup Voltage

Vstartup

−

12.5

14.2

V

Undervoltage Lockout Threshold Voltage

VUVLO

7.2

9.0

−

V

Hysteresis (Vstartup − VUVLO)

Vhys

2.2

3.5

−

V

VCC Startup Current Consumption (VCC = 8.0 V)

ICC−start

−

2.8

6.5

mA

VCC Steady State Current Consumption

(CGATE = 1.0 nF, fSW = 100 kHz, FB open)

ICC−SW

0.55

0.9

1.75

mA

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