LM5025SD datasheet(5/16 Pages) NSC

No. de pieza	LM5025SD

Descripción Electrónicos	Active Clamp Voltage Mode PWM Controller

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Fabricante Electrónico	NSC [National Semiconductor (TI)]

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

V

IN to GND

-0.3V to 100V

V

CC to GND

-0.3V to 16V

CS1, CS2 to GND

-0.3 to 1.00V

All other inputs to GND

-0.3 to 7V

ESD Rating (Note 2)

Human Body Model

2kV

Machine Model

200V

Storage Temperature Range

-55˚C to 150˚C

Junction Temperature

150˚C

Operating Ratings (Note 1)

V

IN Voltage

13 to 90V

External Voltage Applied to V

CC

8to15V

Operating Junction Temperature

-40˚C to +125˚C

Electrical Characteristics

Specifications with standard typeface are for T

J = 25˚C, and those with boldface type apply over full Operating Junction

Temperature range.V

IN = 48V, VCC = 10V, RT = 31.3k

Ω,R

SET = 27.4k

Ω) unless otherwise stated (Note 3)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Startup Regulator

V

CC Reg

V

CC Regulation

No Load

7.3

7.6

7.9

V

CC Current Limit

(Note 4)

20

25

mA

I-V

IN

Startup Regulator

Leakage (external Vcc

Supply)

V

IN = 100V

165

500

µA

Shutdown Current (Iin)

UVLO = 0V

350

450

µA

V

CC Supply

V

CC Under-voltage

Lockout Voltage

(positive going V

cc)

V

CC Reg

- 220mV

V

CC Reg -

120mV

V

CC Under-voltage

Hysteresis

1.0

1.5

2.0

V

CC Supply Current

(I

CC)

C

gate =0

4.2

mA

Reference Supply

V

REF

Ref Voltage

I

REF =0mA

4.85

5

5.15

V

Ref Voltage

Regulation

I

REF = 0 to 10mA

25

50

mV

Ref Current Limit

10

20

mA

Current Limit

CS1 Prop

CS1 Delay to Output

CS1 Step from 0 to 0.4V

Time to onset of OUT

Transition (90%)

C

gate =0

40

ns

CS2 Prop

CS2 Delay to Output

CS2 Step from 0 to 0.4V

Time to onset of OUT

Transition (90%)

C

gate =0

50

ns

Cycle by Cycle

Threshold Voltage

(CS1)

0.22

0.25

0.28

V

Cycle Skip Threshold

Voltage (CS2)

Resets SS capacitor;

auto restart

0.22

0.25

0.28

V

Leading Edge

Blanking Time

50

ns

CS Sink Impedance

(clocked)

I

CS = 10mA

30

50

Ω

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