NCP1217D100R2G datasheet(3/19 Pages) ONSEMI

Part #	NCP1217D100R2G

Description	Enhanced PWM Current--Mode Controller for High--Power Universal Off--Line Supplies

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NCP1217, NCP1217A

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3

Figure 2. Internal Circuit Architecture

Overload

Management

UVLO High and Low

500 mA

HV Current

Source

Internal VCC

8

7

6

5

HV

NC

VCC

Drv

1

2

3

4

Q Flip--Flop

DCmax = 74%

Q

250 ns

L.E.B.

65--100--133 kHz

Clock

--

+

--

+

80 k

20 k

57 k

1V

Current

Sense

Ground

FB

Adj

24 k

25 k

+

--

VREF

Reset

1.1 V

Skip Cycle

Comparator

Set

19 k

Ramp

Compensation

Reset

--

+

Latchoff

Comparator

+

--

Latch

Reset

Set

3.1 V

UVLO

1ms SS*

* Available for “A” version only

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Power Supply Voltage

VCC

16

V

Power Supply Voltage on All Other Pins Except Pin 8 (HV), Pin 6 (VCC) and Pin 5 (Drv)

--

--0.3to10

V

Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Decoupled to Ground with 10 mF

VHV

500

V

Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Grounded

VHV

450

V

Minimum Operating Voltage on Pin 8 (HV)

28

V

Maximum Current into All Pins Except VCC (6) and HV (8) when 10 V ESD Diodes are Activated

--

5.0

mA

Thermal Resistance, Junction--to--Case

RθJC

57

C/W

Thermal Resistance, Junction--to--Air, PDIP--7 Version

Thermal Resistance, Junction--to--Air, SO--8 Version

RθJA

100

178

C/W

Maximum Junction Temperature

TJMAX

150

C

Temperature Shutdown

--

155

C

Hysteresis in Shutdown

--

30

C

Storage Temperature Range

--

--60 to +150

C

ESD Capability, HBM Model (All Pins Except VCC and HV)

--

2.0

kV

ESD Capability, Machine Model

--

200

V

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

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