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LMZ12008 Folha de dados(PDF) 3 Page - Texas Instruments

Nome de Peças LMZ12008
Descrição Electrónicos  SIMPLE SWITCHER Power Module
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
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LMZ12008 Folha de dados(HTML) 3 Page - Texas Instruments

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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
3
LMZ12008
www.ti.com
SNVS716H – MARCH 2011 – REVISED FEBRUARY 2016
Product Folder Links: LMZ12008
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
NDY Package
11-Pin
Top View
Pin Functions
PIN
TYPE
DESCRIPTION
NAME
NO.
AGND
3
Ground
Analog Ground — Reference point for all stated voltages. Must be externally connected to
PGND(EP).
5
6
EN
4
Analog
Enable — Input to the precision enable comparator. Rising threshold is 1.274 V typical. Once
the module is enabled, a 13-µA source current is internally activated to facilitate programmable
hysteresis.
FB
7
Analog
Feedback — Internally connected to the regulation amplifier and overvoltage comparator. The
regulation reference point is 0.795 V at this input pin. Connect the feedback resistor divider
between VOUT and AGND to set the output voltage.
NC
9
No Connect — This pin must remain floating, do not ground.
PGND
Ground
Exposed Pad / Power Ground — Electrical path for the power circuits within the module. PGND
is not internally connected to AGND (pin 5,6). Must be electrically connected to pins 5 and 6
external to the package. The exposed pad is also used to dissipate heat from the package
during operation. Use one hundred 12 mil thermal vias from top to bottom copper for best
thermal performance.
SS
8
Analog
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 Detailed Design Procedure section.
VIN
1
Power
Input supply — Nominal operating range is 6 V to 20 V. A small amount of internal capacitance
is contained within the package assembly. Additional external input capacitance is required
between this pin and the exposed pad (PGND).
2
VOUT
10
Power
Output Voltage — Output from the internal inductor. Connect the output capacitor between this
pin and exposed pad (PGND).
11


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