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LMZ12002EXT データシート(PDF) 3 Page - Texas Instruments

部品番号 LMZ12002EXT
部品情報  LMZ12002EXT 2-A SIMPLE SWITCHER짰 Power Module With 20-V Maximum Input Voltage
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LMZ12002EXT データシート(HTML) 3 Page - Texas Instruments

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LMZ12002EXT
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SNVS662G – JUNE 2010 – REVISED AUGUST 2015
5 Pin Configuration and Functions
NDW Package
7-Pin
Top View
Pin Functions
PIN
TYPE
DESCRIPTION
NAME
NO.
Enable — Input to the precision enable comparator. Rising threshold is 1.18-V nominal; 90-
EN
3
Analog
mV hysteresis nominal. Maximum recommended input level is 6.5 V.
Exposed Pad — Internally connected to pin 4. Used to dissipate heat from the package
EP
Ground
during operation. Must be electrically connected to pin 4 external to the package.
Feedback — Internally connected to the regulation, over-voltage, and short-circuit
FB
6
Analog
comparators. 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
RON
2
Analog
application. 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
SS
5
Analog
soft-start function. This node is discharged at 200-µA during disable, overcurrent, thermal
shutdown and internal UVLO conditions.
Supply input — Nominal operating range is 4.5 V to 20 V . A small amount of internal
VIN
1
Power
capacitance 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
VOUT
7
Power
this pin and exposed pad.
6 Specifications
6.1 Absolute Maximum Ratings
(1)
MIN
MAX
UNIT
VIN, RON to GND
–0.3
25
V
EN, FB, SS to GND
–0.3
7
V
Junction Temperature
150
°C
Storage Temperature Range
–65
150
°C
Peak Reflow Case Temperature (30 sec)
245
°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.
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. Manufacturing with
less than 500-V HBM is possible with the necessary precautions.
(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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