LM3421 datasheet(4/65 Pages) TI1

4 / 65 page

LM3421, LM3421-Q1

LM3423, LM3423-Q1

SNVS574D – JULY 2008 – REVISED SEPTEMBER 2011

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1) (2)

VIN, EN, RPD, nDIM

-0.3V to 76.0V

-1 mA continuous

OVP, HSP, HSN, LRDY, FLT, DPOL

-0.3V to 76.0V

-100 µA continuous

RCT

-0.3V to 76.0V

-1 mA to +5 mA continuous

-0.3V to 76.0V

-2V for 100 ns

-1mA continuous

VCC

-0.3V to 8.0V

TIMR

-0.3V to 7.0V

-100µA to +100µA Continuous

COMP, CSH

-0.3V to 6.0V

-200 µA to +200 µA Continuous

GATE, DDRV

-0.3V to VCC

-2.5V for 100 ns

VCC+2.5V for 100 ns

-1 mA to +1 mA continuous

PGND

-0.3V to 0.3V

-2.5V to 2.5V for 100 ns

Maximum Junction Temperature

Internally Limited

Storage Temperature Range

−65°C to +150°C

Maximum Lead Temperature (Solder and Reflow) (3)

260°C

Continuous Power Dissipation

Internally Limited

ESD Susceptibility(4)

Human Body Model

2 kV

Charge Device Model

500V CSH pin

750V all other pins

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of

device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or

other conditions beyond those indicated in the Operating Ratings is not implied. The recommended Operating Ratings indicate

conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are with respect

to the potential at the AGND pin, unless otherwise specified.

(2)

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

specifications.

(3)

Refer to http://www.ti.com/packaging for more detailed information and mounting techniques.

(4)

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

Ω resistor into each pin. The applicable standard is JESD22-

A114C.

Operating Conditions

(1)

Operating Junction Temperature Range

LM3421, LM3421Q1,

LM3423, LM3423Q1

−40°C to +125°C

LM3421Q0, LM3423Q0

−40°C to +150°C

Input Voltage VIN

4.5V to 75V

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of

device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or

other conditions beyond those indicated in the Operating Ratings is not implied. The recommended Operating Ratings indicate

conditions at which the device is functional and the device should not be operated beyond such conditions. All voltages are with respect

to the potential at the AGND pin, unless otherwise specified.

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Product Folder Links: LM3421 LM3421-Q1 LM3423 LM3423-Q1

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