LM5039

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SNVS621D – FEBRUARY 2010 – REVISED MARCH 2013

Absolute Maximum Ratings

(1) (2)

VIN to GND

-0.3V to 105V

HS to GND

-1V to 105V

HB to GND

-0.3V to 118V

HB to HS

-0.3V to 18V

VCC to GND

-0.3V to 16V

CS, RT, DLY, SS, to GND

-0.3V to 5.5V

COMP Input Current

10mA

ACL Input Current

500 µA

All other inputs to GND

-0.3V to 7V

Human Body Model

2kV

Storage Temperature Range

-65°C to 150°C

Junction Temperature

150°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.

(2)

If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and

specifications.

(3)

The human body model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin. 2kV for all pins except HB, HO and HS

which are rated at 1.5kV.

Operating Ratings

(1)

VIN Voltage

13V to 105V

External Voltage Applied to VCC

8V to 15V

Operating Junction Temperature

-40°C to +125°C

(1)

Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which

operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.

Electrical Characteristics

stated. See

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Startup Regulator (VCC pin)

VCC voltage

7.3

7.6

7.9

V

VCC current limit

57

65

mA

VCC Under-voltage threshold (VCC

VIN = VCC,

0.2

0.1

V

increasing)

setpoint

VCC decreasing

VCC – PGND

5.5

6.2

6.9

V

Startup regulator current

VIN = 90V, UVLO = 0V

35

70

µA

4

6

mA

source

Outputs Switching

Voltage Reference Regulator (REF pin)

REF Voltage

4.85

5

5.15

V

REF Voltage Regulation

25

50

mV

REF Current Limit

REF = 4.5V

15

20

mA

Under-Voltage Lock Out and shutdown (UVLO pin)

Under-voltage threshold

1.212

1.25

1.288

V

Hysteresis current

UVLO pin sourcing

19

23

27

µA

Under-voltage Shutdown Threshold

UVLO voltage falling

0.3

V

(1)

and cold limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

(2)

Typical specifications represent the most likely parametric norm at 25°C operation

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