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LMZ14202EXT Arkusz danych(PDF) 3 Page - Texas Instruments

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Numer części LMZ14202EXT
Szczegółowy opis  2A SIMPLE SWITCHER Power Module With 42-V Maximum Input Voltage for Demanding Environments and Rugged Applications
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

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Exposed Pad
Connect to GND
5
SS
6
FB
3
EN
1
VIN
2
RON
4
GND
7
VOUT
LMZ14202EXT
www.ti.com
SNVS665H – JUNE 2010 – REVISED OCTOBER 2015
5 Pin Configuration and Functions
NDW Package
7-Pin TO-PMOD
Top View
Pin Functions
PIN
TYPE
DESCRIPTION
NAME
NO.
Enable — Input to the precision enable comparator. Rising threshold is 1.18 V nominal; 90 mV
EN
3
Analog
hysteresis nominal. Maximum recommended input level is 6.5 V.
Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package during
EP
Ground
operation. Must be electrically connected to pin 4 external to the package.
Feedback — Internally connected to the regulation, overvoltage, and short-circuit comparators.
FB
6
Analog
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.
ON-Time Resistor — An external resistor from VIN to this pin sets the ON-time of the application.
RON
2
Analog
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 soft-
SS
5
Analog
start function. This node is discharged at 200 µA during disable, overcurrent, thermal shutdown
and internal UVLO conditions.
Supply input — Nominal operating range is 6 V to 42 V. A small amount of internal capacitance
VIN
1
Power
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 this
VOUT
7
Power
pin and exposed pad.
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1) (2)
MIN
MAX
UNIT
VIN, RON to GND
–0.3
43.5
V
EN, FB, SS to GND
–0.3
7
V
Junction temperature
150
°C
Peak reflow case temperature (30 sec)
245
°C
Storage temperature
–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)
For soldering specifications, refer to Absolute Maximum Ratings for Soldering SNOA549.
6.2 ESD Ratings
VALUE
UNIT
V(ESD)
Electrostatic discharge
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)(2)
±2000
V
(1)
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2)
The human body model is a 100-pF capacitor discharged through a 1.5-k
Ω resistor into each pin. Test method is per JESD-22-114.
Copyright © 2010–2015, Texas Instruments Incorporated
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