PGND/EP

Connect to AGND

5

AGND

6

AGND

3

AGND

1

VIN

2

VIN

4

EN

7

FB

SS

9

NC

10

VOUT

11

VOUT

8

LMZ13610

www.ti.com

SNVS709G – MARCH 2011 – REVISED DECEMBER 2015

5 Pin Configuration and Functions

NDY Package

11-Pin

Top View

Pin Functions

PIN

TYPE

DESCRIPTION

NAME

NO.

3

AGND

5

Ground

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

6

Enable — Input to the precision enable comparator. Rising threshold is 1.274 V typical. Once the

EN

4

Analog

module is enabled, a 20-µA source current is internally activated to accommodate programmable

hysteresis.

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

FB

7

Analog

regulation reference point is 0.8 V at this input pin. Connect the feedback resistor divider between the

output and AGND to set the output voltage.

NC

9

—

No Connect. This pin must remain floating, do not ground.

Exposed Pad / Power Ground Electrical path for the power circuits within the module. — NOT Internally

PGND

—

Power

connected to AGND / pin 5. Used to dissipate heat from the package during operation. Must be

electrically connected to pin 5 external to the package.

Soft-Start/Track input — To extend the 1.6-ms internal soft-start connect an external soft-start capacitor.

SS

8

Analog

For tracking connect to an external resistive divider connected to a higher priority supply rail. See

Design Steps section.

1

Supply input — Nominal operating range is 6 V to 36 V. A small amount of internal capacitance is

VIN

Power

contained within the package assembly. Additional external input capacitance is required between this

2

pin and PGND.

10

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

VOUT

Power

PGND.

11

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1) (2) (3)

MIN

MAX

UNIT

VIN to PGND

–0.3

40

V

EN to AGND

–0.3

5.5

V

SS, FB to AGND

–0.3

2.5

V

AGND to PGND

–0.3

0.3

V

Junction temperature

150

°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: see product folder at www.ti.com and literature number SNOA549

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