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LM22670QTJE-ADJ bảng dữ liệu(PDF) 3 Page - Texas Instruments

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LM22670
www.ti.com
SNVS584O – SEPTEMBER 2008 – REVISED MARCH 2013
PIN DESCRIPTIONS (continued)
Pin Numbers
SO
Pin Numbers
Name
Description
Application Information
PowerPAD-8
PFM Package
Package
3
5
RT/SYNC
Oscillator mode control input
Used to control oscillator mode of regulator. See
Frequency Adjustment and Synchronization section of
data sheet.
4
6
FB
Feedback input
Feedback input to regulator.
5
7
EN
Enable input
Used to control regulator start-up and shut-down. See
Precision Enable section of data sheet.
6
4
GND
Ground input to regulator; system
System ground pin.
common
7
2
VIN
Input voltage
Supply input to the regulator.
8
1
SW
Switch output
Switching output of regulator.
EP
EP
EP
Exposed Pad
Connect to ground. Provides thermal connection to PCB.
See Application Information.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1) (2)
VIN to GND
43V
EN Pin Voltage
-0.5V to 6V
RT/SYNC Pin Voltage
-0.5V to 7V
SW to GND (3)
-5V to VIN
BOOT Pin Voltage
VSW + 7V
FB Pin Voltage
-0.5V to 7V
Power Dissipation
Internally Limited
Junction Temperature
150°C
For soldering specifications, refer to the following document: www.ti.com/lit/snoa549
ESD Rating (4)
Human Body Model
±2 kV
Storage Temperature Range
-65°C to +150°C
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the recommended Operating Ratings is not implied. The recommended Operating Ratings
indicate conditions at which the device is functional and should not be operated beyond such conditions.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3)
The absolute maximum specification of the ‘SW to GND’ applies to DC voltage. An extended negative voltage limit of -10V applies to a
pulse of up to 50 ns.
(4)
ESD was applied using the human body model, a 100 pF capacitor discharged through a 1.5 k
Ω resistor into each pin.
Operating Ratings
(1)
Supply Voltage (VIN)
4.5V to 42V
Junction Temperature Range
-40°C to +125°C
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur, including inoperability and degradation of
device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or
other conditions beyond those indicated in the recommended Operating Ratings is not implied. The recommended Operating Ratings
indicate conditions at which the device is functional and should not be operated beyond such conditions.
Copyright © 2008–2013, Texas Instruments Incorporated
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