LM5026MT datasheet(5/23 Pages) NSC

Part #	LM5026MT

Description	Active Clamp Current Mode PWM Controller

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Manufacturer	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 105V

V

CC to GND

-0.3V to 16V

CS to GND

-0.3 to 1.0V

COMP Input Current

10mA

All other inputs to GND

-0.3 to 7V

ESD Rating (Note 2)

Human Body Model

2kV

Storage Temperature Range

-65˚C to 150˚C

Junction Temperature

150˚C

Operating Ratings (Note 1)

V

IN Voltage

13 to 100V

External Voltage Applied to V

CC

8V to 15V

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 = 30.0k

Ω,R

SET = 34.8k

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, UVLO = 1.3V

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

UVLO Shutdown/Standby

Undervoltage

Shutdown Threshold

0.3

0.4

0.5

V

Undervoltage

Shutdown Hysteresis

0.1

V

Undervoltage

Standby Threshold

1.21

1.25

1.29

V

Undervoltage

Standby Hysteresis

Current Source

16

20

24

µA

Current Limit

Cycle by Cycle

Threshold Voltage

0.45

0.5

0.55

V

ILIM Delay to Output

CS step from 0 to 0.6V Time

to onset of OUT transition

(90%) Cgate=0

40

ns

Leading Edge

Blanking Time

70

100

130

ns

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