LMZ12003

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SNVS636O – DECEMBER 2009 – REVISED AUGUST 2015

5 Pin Configuration and Functions

NDW Package

7-Pin

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

Enable — Input to the precision enable comparator. Rising threshold is 1.18-V nominal; 90-

EN

3

Analog

mV hysteresis nominal. Maximum recommended input level is 6.5 V.

Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package

EP

—

Ground

during operation. Must be electrically connected to pin 4 external to the package.

Feedback — Internally connected to the regulation, overvoltage, and short circuit

FB

6

Analog

comparators. The regulation reference point is 0.8 V at this input pin. Connected the

feedback resistor divider between the output and ground to set the output voltage.

GND

4

Ground

Ground — Reference point for all stated voltages. Must be externally connected to EP.

RON

2

Analog

application. Typical values range from 25 k

Ω to 124 kΩ.

Soft-Start — An internal 8-µA current source charges an external capacitor to produce the

SS

5

Analog

soft-start function. This node is discharged at 200 µA during disable, overcurrent, thermal

shutdown and internal UVLO conditions.

Supply input — Nominal operating range is 4.5 V to 20 V. A small amount of internal

VIN

1

Power

capacitance is contained within the package assembly. Additional external input capacitance

is required between this pin and exposed pad.

Output Voltage — Output from the internal inductor. Connect the output capacitor between

VOUT

7

Power

this pin and exposed pad.

6 Specifications

6.1 Absolute Maximum Ratings

(1) (2) (3)

MIN

MAX

UNIT

VIN, RON to GND

–0.3

25

V

EN, FB, SS to GND

–0.3

7

V

Junction Temperature

150

°C

Peak Reflow Case Temperature (30 sec)

245

°C

–65

150

°C

(1)

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

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

specifications.

(3)

For soldering specifications, refer to the following document: SNOA549

6.2 ESD Ratings

VALUE

UNIT

Electrostatic discharge

±2000

V

(1)

JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with

less than 500-V HBM is possible with the necessary precautions.

(2)

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

Ω resistor into each pin. Test method is per JESD-22-114.

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