LM2841, LM2842

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SNVS540H – MARCH 2009 – REVISED APRIL 2013

Absolute Maximum Ratings

(1) (2)

-0.3V to +45V

SHDN

SW Voltage

-0.3V to +45V

CB Voltage above SW Voltage

7V

FB Voltage

-0.3V to +5V

Maximum Junction Temperature

150°C

Internally Limited

Lead Temperature

300°C

Vapor Phase (60 sec.)

215°C

Infrared (15 sec.)

220°C

Human Body Model

2 kV

(1)

Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the

device is intended to be functional, but device parameter specifications may not be ensured. 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)

resistance,

the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. Thermal

(4)

Human Body Model, applicable std. JESD22-A114-C.

Operating Conditions

−40°C to +125°C

Storage Temperature

−65°C to +150°C

4.5V to 42V

SW Voltage

Up to 42V

(1)

All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are

100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC)

methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

Electrical Characteristics

Symbol

Parameter

Conditions

Units

Quiescent current

SHDN = 0V

16

40

µA

Device On, Not Switching

1.30

1.75

mA

Device On, No Load

1.35

1.85

Switch ON resistance

0.9

1.6

Ω

Switch leakage current

0.0

0.5

µA

Switch current limit

525

900

mA

525

900

mA

1.15

1.7

A

Feedback pin bias current

0.1

1.0

µA

FB Pin reference voltage

0.747

0.765

0.782

V

(1)

All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are

100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC)

methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).

(2)

Typical numbers are at 25°C and represent the most likely norm.

(3)

(4)

Current limit at 0% duty cycle. May be lower at higher duty cycle or input voltages below 6V.

(5)

Bias currents flow into pin.

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