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TPS5450DDAR Integrated Circuit IC Chip Buck Switching Regulator IC Positive Adjustable

Categories Integrated Circuit IC Chip
Model Number: TPS5450DDAR
Place of Origin: Original
Brand Name: Original Manufacturer
Certification: Rosh
MOQ: 1
Price: Negotiation
Packaging Details: Original Packing
Delivery Time: In stock
Payment Terms: TT, Paypal, Western Union And So On
Supply Ability: 80000
Part Status: Active
Function: Step-Down
Topology: Buck
Output Configuration: Positive
Output Type: Adjustable
Number of Outputs: 1
Voltage - Input (Min): 5.5V
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TPS5450DDAR Integrated Circuit IC Chip Buck Switching Regulator IC Positive Adjustable


TPS5450DDAR Integrated Circuit IC Chip Buck Switching Regulator IC Positive Adjustable 1.221V 1 Output 5A 8-PowerSOIC


Part StatusActive
FunctionStep-Down
Output ConfigurationPositive
TopologyBuck
Output TypeAdjustable
Number of Outputs1
Voltage - Input (Min)5.5V
Voltage - Input (Max)36V
Voltage - Output (Min/Fixed)1.221V
Voltage - Output (Max)31.32V
Current - Output5A
Frequency - Switching500kHz
Synchronous RectifierNo
Operating Temperature-40°C ~ 125°C (TJ)
Mounting TypeSurface Mount
Package / Case8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package8-SO PowerPad
Base Part NumberTPS5450

FEATURES APPLICATIONS


· Wide Input Voltage Range: 5.5 V to 36 V

· Up to 5-A Continuous (6-A Peak) Output Current

· High Efficiency Greater than 90% Enabled by 110-mW Integrated MOSFET Switch

· Wide Output Voltage Range: Adjustable Down

· High Density Point-of-Load Regulators

· LCD Displays, Plasma Displays

· Battery Chargers

· 12-V/24-V Distributed Power Systems

DESCRIPTION


to 1.22 V with 1.5% Initial Accuracy As a member of the SWIFT™ family of DC/DC


· Internal Compensation Minimizes External Parts Count

· Fixed 500 kHz Switching Frequency for Small

regulators, the TPS5450 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high performance


Filter Size voltage error amplifier that provides tight voltage


· 18 mA Shut Down Supply Current

· Improved Line Regulation and Transient Response by Input Voltage Feed Forward

· System Protected by Overcurrent Limiting,

regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient


Overvoltage Protection and Thermal response. Using the ENA pin, shutdown supply

Shutdown current is reduced to 18 mA typically. Other features


· –40°C to 125°C Operating Junction Temperature Range

· Available in Small Thermally Enhanced 8-Pin

include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally


SOIC PowerPAD™ Package compensated.

  • For SWIFT™ Documentation, Application The TPS5450 device is available in a thermally Notes and Design Software, See the TI enhanced, 8-pin SOIC PowerPAD™ package. TI Website at provides evaluation modules and software tool to aid

in achieving high-performance power supply designs

to meet aggressive equipment development cycles.

ORDERING INFORMATION


TJINPUT VOLTAGEOUTPUT VOLTAGEPACKAGE(1)PART NUMBER
–40°C to 125°C5.5 V to 36 VAdjustable to 1.22 VThermally Enhanced SOIC (DDA)(2)TPS5450DDA

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.

(2) The DDA package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS5450DDAR). See applications section of data sheet for PowerPAD™ drawing and layout information.


ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted) (1)(2)


VALUEUNIT

VI


Input voltage range

VIN–0.3 to 40(3)

V

BOOT–0.3 to 50
PH (steady-state)–0.6 to 40(3)
ENA–0.3 to 7
BOOT-PH10
VSENSE–0.3 to 3
PH (transient < 10 ns)–1.2
IOSource currentPHInternally Limited
IlkgLeakage currentPH10mA
TJOperating virtual junction temperature range–40 to 150°C
TstgStorage temperature–65 to 150°C

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) All voltage values are with respect to network ground terminal.

(3) Approaching the absolute maximum rating for the VIN pin may cause the voltage on the PH pin to exceed the absolute maximum rating.


DISSIPATION RATINGS(1)(2)


PACKAGETHERMAL IMPEDANCE JUNCTION-TO-AMBIENT
8 Pin DDA (4-layer board with solder)(3)30°C/W

(1) Maximum power dissipation may be limited by overcurrent protection.

(2) Power rating at a specific ambient temperature TA should be determined with a junction temperature of 125°C. This is the point where distortion starts to substantially increase. Thermal management of the final PCB should strive to keep the junction temperature at or below 125°C for best performance and long-term reliability. See Thermal Calculations in applications section of this data sheet for more information.

(3) Test board conditions:

a. 2 in x 1.85 in, 4 layers, thickness: 0.062 inch (1,57 mm).

b. 2 oz. copper traces located on the top and bottom of the PCB.

c. 2 oz. copper ground planes on the 2 internal layers.

d. 4 thermal vias in the PowerPAD area under the device package.


RECOMMENDED OPERATING CONDITIONS


MINNOMMAXUNIT
VIInput voltage range5.536V
TJOperating junction temperature–40125°C

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