NCP1215 查看數據表（PDF） - ON Semiconductor

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NCP1215

Low Cost Variable OFF Time Switched Mode Power Supply Controller

ON Semiconductor 

NCP1215

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

Maximum CT Pin Voltage at FB Current = 25 mA (Including Voffset)

Maximum CT Pin Voltage at FB Current = 50 mA (Including Voffset)

CT PIN − OFF TIME CONTROL

Source Current (CT Pin Grounded)

Source Current Maximum Voltage Capability

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

CURRENT SENSE

Voffset

VCT−25mA

VCT−50mA

ICT

VCT−max

VCT−min

1.05 1.19 1.34

V

2.4

3.1

4.3

V

3.6

4.6

6.2

V

8.0

9.8

11.5 mA

−

6.5

−

V

−

−

20

mV

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

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

Comparator Threshold Voltage

Propagation Delay (CS Falling Edge to Gate Output)

GATE DRIVE

ICS−min

ICS−max

Vth

tdelay

8.0

12.5

16

mA

40

49

58

mA

15

42

80

mV

−

215

310

ns

Sink Resistance (Isink = 30 mA)

Source Resistance (Isource = 30 mA)

POWER SUPPLY

ROL

ROH

25

40

90

W

60

80

130

W

VCC Startup Voltage

Undervoltage Lockout Threshold Voltage

Hysteresis (Vstartup − VUVLO)

VCC Startup Current Consumption (VCC = 8.0 V)

VCC Steady State Current Consumption

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

Vstartup

VUVLO

Vhys

ICC−start

ICC−SW

−

12.5 14.2

V

7.2

9.0

−

V

2.2

3.5

−

V

−

2.8

6.5

mA

0.55

0.9

1.75 mA

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