LMZ13608_15 Datasheet, PDF (3/35 Pages) Texas Instruments – 8-A SIMPLE SWITCHER Power Module

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5 Pin Configuration and Functions
LMZ13608
SNVS710I – MARCH 2011 – REVISED DECEMBER 2015
PGND/EP
Connect to AGND
NDY Package
11-Pin
Top View
11
10
9
8
7
6
5
4
3
2
1
VOUT
VOUT
NC
SS
FB
AGND
AGND
EN
AGND
VIN
VIN
PIN
NAME
NO.
AGND
3
5
6
EN
4
FB
7
NC
9
PGND
—
SS
8
VIN
1
2
VOUT
10
11
TYPE
Pin Functions
DESCRIPTION
Ground Analog Ground — Reference point for all stated voltages. Must be externally connected to EP/PGND.
Analog
Analog
—
Ground
Analog
Power
Power
Enable — Input to the precision enable comparator. Rising threshold is 1.274 V typical. Once the
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
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.
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 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. For tracking connect to an external resistive divider connected to a higher priority supply rail.
See Design Steps section.
Supply input — Nominal operating range is 6 V to 36 V. A small amount of internal capacitance is
contained within the package assembly. Additional external input capacitance is required between this
pin and PGND.
Output Voltage — Output from the internal inductor. Connect the output capacitor between this pin and
PGND.
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
Storage temperature, T_stg
–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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Product Folder Links: LMZ13608
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