LM2622 datasheet(4/27 Pages) TI

4 / 27 page

LM2622

SNVS068E – MAY 2000 – REVISED MARCH 2013

www.ti.com

Absolute Maximum Ratings

(1) (2)

VIN

12V

SW Voltage

18V

FB Voltage

VC Voltage

SHDN Voltage

FSLCT

12V

Maximum Junction Temperature

150°C

Power Dissipation(3)

Internally Limited

Lead Temperature

300°C

Vapor Phase (60 sec.)

215°C

Infrared (15 sec.)

220°C

ESD Susceptibility

(4)

Human Body Model

2kV

Machine Model

200V

(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)

The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal

resistance,

θJA, and the ambient temperature, TA. See the Electrical Characteristics table for the thermal resistance of various layouts.

The maximum allowable power dissipation at any ambient temperature is calculated using: PD (MAX) = (TJ(MAX) − TA)/θJA. Exceeding

the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown.

(4)

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

Ω resistor into each pin. The machine model is a 200pF

capacitor discharged directly into each pin.

Operating Conditions

Operating Junction Temperature Range (1)

−40°C to +125°C

Storage Temperature

−65°C to +150°C

Supply Voltage

2V to 12V

(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 specified via correlation using standard Statistical Quality Control (SQC)

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

Electrical Characteristics

Specifications in standard type face are for TJ = 25°C and those with boldface type apply over the full Operating

Temperature Range ( TJ = −40°C to +125°C)Unless otherwise specified. VIN =2.0V and IL = 0A, unless otherwise specified.

Min

Typ

Max

Symbol

Parameter

Conditions

Units

(1)

(2)

(1)

Quiescent Current

FB = 0V (Not Switching)

1.3

2.0

VSHDN = 0V

µA

VFB

Feedback Voltage

1.2285

1.26

1.2915

ICL

(3)

Switch Current Limit

VIN = 2.7V

(4)

1.0

1.65

2.3

ΔVO/ΔILOAD

Load Regulation

VIN = 3.3V

6.7

mV/A

%VFB/ΔVIN

Feedback Voltage Line

2.0V

≤ VIN ≤ 12.0V

0.013

0.1

%/V

Regulation

FB Pin Bias Current (5)

0.5

(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 specified 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)

Duty cycle affects current limit due to ramp generator.

(4)

Current limit at 0% duty cycle. See Typical Performance Characteristics section for Switch Current Limit vs. VIN

(5)

Bias current flows into FB pin.

Submit Documentation Feedback

Product Folder Links: LM2622

LM2622 Datasheet(PDF) 4 Page - Texas Instruments

LM2622 Datasheet(HTML) 4 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Datasheet Download

Link URL