Exposed Pad

Connect to GND

5

SS

6

FB

3

EN

1

VIN

2

RON

4

GND

7

VOUT

VIN

LMZ14202H

10 PF

4700 pF

0.022 PF

* See equation 1

to calculate values

12V

34 k:

2.43 k:

249 k:

47 PF

1-75 m:

15 - 42V

15V

34 k:

1.91 k:

287 k:

47 PF

1-65 m:

18 - 42V

18V

34 k:

1.58 k:

374 k:

33 PF

1-60 m:

22 - 42V

24V

34 k:

1.18 k:

499 k:

33 PF

1-60 m:

28 - 42V

30V

34 k:

931:

619 k:

33 PF

1-75 m:

34 - 42V

5V

34 k:

6.49 k:

100 k: 100 PF

1-145 m:

8 - 42V

LMZ14202H

www.ti.com

SNVS691D – JANUARY 2011 – REVISED FEBRUARY 2013

Simplified Application Schematic

Connection Diagram

Figure 2. Top View

7-Lead PFM

PIN DESCRIPTIONS

Pin

Name

Description

1

VIN

Supply input — Additional external input capacitance is required between this pin and the exposed pad (EP).

2

RON

values range from 100k to 700k ohms.

3

EN

Enable — Input to the precision enable comparator. Rising threshold is 1.18V.

4

GND

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

5

SS

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

6

FB

Feedback — Internally connected to the regulation, over-voltage, and short-circuit comparators. The regulation reference

point is 0.8V at this input pin. Connect the feedback resistor divider between the output and ground to set the output

voltage.

7

VOUT

Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and the EP.

EP

EP

Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package during operation. Must be

electrically connected to pin 4 external to the package.

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.

Copyright © 2011–2013, Texas Instruments Incorporated

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