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LM3489 Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3489
Description  Hysteretic PFET Buck Controller with Enable Pin
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3489 Datasheet(HTML) 3 Page - Texas Instruments

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LM3489
www.ti.com
SNVS443A – MAY 2006 – REVISED JUNE 2008
Absolute Maximum Ratings
(1)
VIN Voltage
−0.3V to 36V
PGATE Voltage
−0.3V to 36V
FB Voltage
−0.3V to 5V
−1.0V to 36V
ISENSE Voltage
-1V (<100ns)
ADJ Voltage
−0.3V to 36V
EN Voltage (2)
−0.3V to 6V
Maximum Junction Temp.
150°C
Power Dissipation, TA = 25°C
(3)
417mW
ESD Susceptibilty (4)
Human Body Model
2kV
Lead Temperature
Vapor Phase (60 sec.)
215°C
Infared (15 sec.)
220°C
Storage Temperature
−65°C to 150°C
(1)
Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the
device is intended to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test
conditions, see the Electrical Characteristics.
(2)
This pin is internally pulled high and clamped at 8V typical. The absolute maximum and operating maximum rating specifies the input
level allowed for an external voltage source applied to this pin without triggering the internal clamp with margin.
(3)
The maximum allowable power dissipation is a function of the maximum junction temperature, TJ_MAX, the junction-to-ambient thermal
resistance,
θJA = 240°C/W, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is
calculated using:PD_MAX = (TJ_MAX - TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature.
(4)
The human body model is a 100 pF capacitor discharged through a 1.5k
Ω resistor into each pin. The machine model is a 200pF
capacitor discharged directly into each pin. MIL-STD-883 3015.7
Operating Ratings
(1)
Supply Voltage Range (VIN)
4.5V to 35V
EN Voltage (max.) (2)
5.5V
Operating Junction Temperature (TJ)
−40°C to +125°C
(1)
Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the
device is intended to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test
conditions, see the Electrical Characteristics.
(2)
This pin is internally pulled high and clamped at 8V typical. The absolute maximum and operating maximum rating specifies the input
level allowed for an external voltage source applied to this pin without triggering the internal clamp with margin.
Copyright © 2006–2008, Texas Instruments Incorporated
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