NCP1280DR2 Datasheet NCP1280DR2 | P4-P6

NCP1280

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4

ORDERING INFORMATION

Device Package Shipping

†

NCP1280DR2 SO-16 2500 / Tape & Reel

NCP1280DR2G SO-16

(Pb-Free)

2500 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

MAXIMUM RATINGS (Note 1)

Rating Symbol Value Unit

Input Line Voltage V

in

-0.3 to 700 V

Auxiliary Supply Voltage V

AUX

-0.3 to 18 V

Transient Auxiliary Supply Voltage (Duration < 10 ms, I

AUX

< 10 mA) V

AUX(transient)

-0.3 to 20 V

Auxiliary Supply Input Current I

AUX

35 mA

OUT1 and OUT2 Voltage V

OUT

-0.3 to (V

AUX

+ 0.3 V) V

OUT1 and OUT2 Output Current I

OUT

10 mA

5.0 V Reference Voltage V

REF

-0.3 to 6.0 V

5.0 V Reference Output Current I

REF

6.0 mA

All Other Inputs/Outputs Voltage V

IO

-0.3 to V

REF

V

All Other Inputs/Outputs Current I

IO

10 mA

Operating Junction Temperature T

J

-40 to 125 °C

Storage Temperature Range T

stg

-55 to 150 °C

Power Dissipation at T

A

= 25°C P

D

0.77 W

Thermal Resistance, Junction to Ambient

R



JA

130 °C/W

1. Maximum Ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those

indicated may adversely affect device reliability. Functional operation under absolute maximum-rated conditions is not implied. Functional

operation should be restricted to the Recommended Operating Conditions.

A. This device series contains ESD protection and exceeds the following tests:

Pin 1 is the HV startup of the device and is rated to the max rating of the part, or 700 V.

Machine Model Method 700 V.

Pins 2-16: Human Body Model 4000 V per MIL-STD-883, Method 3015.

Machine Model Method 200 V.

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ELECTRICAL CHARACTERISTICS (V

in

= 82 V, V

AUX

= 12 V, V

EA

= 2 V, R

T

= 101 k, C

CSKIP

= 6800 pF,

R

D

= 60.4 k, R

FF

= 1.0 M, for typical values T

J

= 25°C, for min/max values, T

J

= -40°C to 125°C, unless otherwise noted)

Characteristic

Symbol Min Typ Max Unit

STARTUP CONTROL AND V

AUX

REGULATOR

V

AUX

Regulation

Startup Threshold/V

AUX

Regulation Peak (V

AUX

increasing)

Minimum Operating V

AUX

Valley Voltage After Turn-On

Hysteresis

V

AUX(on)

V

AUX(off)

V

H

10.5

6.6

-

11.0

7.0

4.0

11.5

7.4

-

V

Minimum Startup Voltage (Pin 1)

I

START

= 1.5 mA, V

AUX

= V

AUX(on)

- 0.2 V, I

REF

= 0 A

V

START(min)

- - 25

V

Startup Circuit Output Current

V

AUX

= 0 V

T

J

= 25°C

T

J

= -40°C to 125°C

V

AUX

= V

AUX(on)

- 0.2 V

T

J

= 25°C

T

J

= -40°C to 125°C

I

START

13

10

8

17.5

-

13.8

-

21

25

17

19

mA

Startup Circuit Off-State Leakage Current (V

in

= 700 V)

T

J

= 25°C

T

J

= -40°C to 125°C

I

START(off)

-

23

-

50

100

A

Startup Circuit Breakdown Voltage (Note 2)

I

START(off)

= 50A, T

J

= 25°C

V

(BR)DS

700 - - V

Auxiliary Supply Current After V

AUX

Turn-On

Outputs Disabled

V

EA

= 0 V

V

UV/OV

= 0.7 V

Outputs Enabled

I

AUX1

I

AUX2

I

AUX3

-

2.7

1.3

4.6

5.0

2.5

6.5

mA

LINE UNDER/OVERVOLTAGE DETECTOR

Undervoltage Threshold (V

in

Increasing) V

UV

1.40 1.52 1.64 V

Undervoltage Hysteresis V

UV(H)

0.080 0.098 0.120 V

Overvoltage Threshold (V

in

Increasing) V

OV

3.47 3.61 3.75 V

Overvoltage Hysteresis V

OV(H)

- 0.145 - V

Undervoltage Propagation Delay to Output t

UV

- 250 - ns

Overvoltage Propagation Delay to Output t

OV

- 160 - ns

CURRENT LIMIT

Cycle by Cycle Threshold Voltage I

LIM1

0.44 0.48 0.52 V

Propagation Delay to Output (V

EA

= 2.0 V)

V

CS

= I

LIM1

to 2.0 V, measured when V

OUT

reaches 0.5 V

OH

t

ILIM

- 90 150 ns

Cycle Skip Threshold Voltage I

LIM2

0.54 0.57 0.62 V

Cycle Skip Charge Current (V

CSKIP

= 0 V) I

CSKIP

8.0 12.3 15

A

2. Guaranteed by design only.

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6

ELECTRICAL CHARACTERISTICS (V

in

= 82 V, V

AUX

= 12 V, V

EA

= 2 V, R

T

= 101 k, C

CSKIP

= 6800 pF,

R

D

= 60.4 k, R

FF

= 1.0 M, for typical values T

J

= 25°C, for min/max values, T

J

= -40°C to 125°C, unless otherwise noted)

Characteristic Symbol Min Typ Max Unit

OSCILLATOR

Frequency (R

T

= 101 k)

T

J

= 25°C

T

J

= -40°C to 125°C

f

OSC1

285

280

300

-

315

320

kHz

Frequency (R

T

= 220 k, V

EA

= 1.0 V)

T

J

= 25°C

T

J

= -40°C to 125°C

f

OSC2

142

140

150

-

158

160

kHz

MAXIMUM DUTY CYCLE COMPARATOR

Maximum Duty Cycle (V

EA

= 3.0 V, T

J

= 25°C)

R

P

= 0 , R

MDP

= open

R

P

= open, R

MDP

= open

DC

MAX

57

75

62

80

66

85

%

Open Circuit Voltage V

DCMAX

0.40 0.47 0.60 V

SOFT-START

Charge Current (V

SS

= 1.0 V) I

SS(C)

5.0 6.2 7.4

A

Discharge Current (V

SS

= 5.0 V, V

UV/OV

= 0 V) I

SS(D)

20 52.5 - mA

PWM COMPARATOR

Input Resistance (V

1

= 1.25 V, V

2

= 1.50 V)

R

IN(VEA)

= (V

2

- V

1

)/(I

2

- I

1

)

R

IN(VEA)

8.0 22 60

k

Lower Input Threshold V

EA(L)

0.3 0.7 0.9 V

Delay to Output (from V

OH

to 0.5 V

OH

) t

PWM

- 200 - ns

5.0 V REFERENCE

Output Voltage (I

REF

= 0 mA)

T

J

= 25°C

T

J

= -40°C to 125°C

V

REF

4.9

4.8

5.0

-

5.1

V

Load Regulation (I

REF

= 0 to 6 mA) V

REF(Load)

- 10 50 mV

Line Regulation (V

AUX

= 7.5 to 16 V) V

REF(Line)

- 50 100 mV

CONTROL OUTPUTS

Output Voltage (I

OUT

= 0 mA)

Low State

High State

V

OL

V

OH

-

0.25

11.8

-

V

Overlap Delay

R

D

= 1 M

Leading

Trailing

R

D

= 60 k

Leading

Trailing

t

D

-

50

32

200

170

90

72

-

130

ns

Drive Resistance (V

in

= 15 V)

Sink (V

EA

= 0 V, V

OUT

= 2 V)

Source (V

EA

= 3 V, V

OUT

= 10 V)

R

SNK

R

SRC

20

50

40

90

80

170



Rise Time (C

L

= 100 pF, 10% to 90% of V

OH

) t

on

- 30 - ns

Fall Time (C

L

= 100 pF, 90% to 10% of V

OH

) t

off

- 12 - ns

NCP1280DR2

NCP1280DR2

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