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Part Number: LM2716

 

 

 

 

Description: The LM2716 is composed of two PWM DC/DC converters. Abuck (step-down) converter is used to generate a ...


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LM2716 General Description


The LM2716 is composed of two PWM DC/DC converters. Abuck (step-down) converter is used to generate a fixed output voltage. A boost (step-up) converter is used to generate an adjustable output voltage. Both converters feature low RDSON (0.16Ω and 0.12Ω) internal switches for maximum  efficiency. Operating frequency can be adjusted anywhere between 300kHz and 600kHz allowing the use of small external components. External soft-start pins for each enables the user to tailor the soft-start times to a specific application. Each converter may also be shut down independently with its own shutdown pin. The LM2716 is available in a low profile 24-lead TSSOP package.

LM2716 Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN                                                              −0.3V to 22V
SW1 Voltage                                               −0.3V to 22V
SW2 Voltage                                               −0.3V to 22V
FB1 Voltage                                                   −0.3V to 7V
FB2 Voltage                                                   −0.3V to 7V
VC1 Voltage                                     1.75V VC1 2.25V
VC2 Voltage                                 0.965V VC2 1.565V
SHDN1 Voltage                                          −0.3V to 7.5V
SHDN2 Voltage                                          −0.3V to 7.5V
SS1 Voltage                                               −0.3V to 2.1V
SS2 Voltage                                               −0.3V to 0.6V
FSLCT Voltage                                               AGND to 5V
CB1 Voltage                                    VIN + 7V (VIN = VSW)
Maximum Junction Temperature                           150°C
Power Dissipation(Note 2)                   Internally Limited
Lead Temperature                                                300°C
Vapor Phase (60 sec.)                                          215°C
Infrared (15 sec.)                                                 220°C
ESD Susceptibility (Note 3)
Human Body Model                                                  2kV
Machine Model                                                       200V

LM2716 Features

.  Fixed buck converter with a 1.8A, 0.16Ω, internal switch
.  Adjustable boost converter with a 3.6A, 0.12Ω, internal switch
.  Adjustable boost output voltage up to 20V
.  Operating input voltage range of 4V to 20V
.  Input undervoltage protection
.  300kHz to 600kHz pin adjustable operating frequency
.  Over temperature protection
.  Small 24-Lead TSSOP package
.  Patented current limit circuitry

 

LM2716 Typical Application

. TFT-LCD Displays
.  Handheld Devices
.  Portable Applications
.  Cellular Phones/Digital Camers

LM2716 Connection Diagram

LM2716 Connection Diagram

LM2716 datasheet

LM2716MT-ADJ
PDF/DataSheet Download

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