Product Details
DC DC Voltage Regulator Tube 8-Pin 8 Terminals TPS54540 100kHz~2.5MHz 4.5V Switching Regulator IC Chip
8 Terminals 4.5V 8-Pin TPS54540 DC DC Voltage Regulator SWITCHING REGULATOR 1 Outputs 100kHz~2.5MHz Tube
8-PowerSOIC (0.154, 3.90mm Width)
TPS54540DDA Description
The TPS54540 is a step down regulator featuring a high side MOSFET that operates at 42 V, 5 A. As per ISO 7637, the device can withstand load dump pulses of up to 45V. Simple external compensation and versatile component selection are provided via current mode control. The no load supply current is decreased to 146 A in a low ripple pulse skip mode. When the enable pin is pushed low, the shutdown supply current is decreased to 2 A.
Internally, undervoltage lockout is set to 4.3 V, but it can be raised by connecting an enable pin. To ensure a controlled start up and prevent overrun, the output voltage start up ramp is internally controlled. It is possible to optimize either efficiency or external component size with a large switching frequency range. Cycle after cycle, an output current limit is imposed. Internal and exterior components are protected during an overload state by frequency foldback and thermal shutdown. The 8-terminal thermally improved HSOP PowerPADTM package for the TPS54540 is available.
TPS54540DDA Features
High Efficiency at Light Loads with Pulse Skipping Eco-mode?
92-mΩ High-Side MOSFET
146 μA Operating Quiescent Current and 2 μA Shutdown Current
100 kHz to 2.5 MHz Fixed Switching Frequency
Synchronizes to External Clock
Low Dropout at Light Loads with Integrated BOOT Recharge FET
Adjustable UVLO Voltage and Hysteresis
0.8 V 1% Internal Voltage Reference
8-Terminal HSOP with PowerPAD? Package
–40°C to 150°C TJ Operating Range
TPS54540DDA Applications
Industrial Automation and Motor Control
Vehicle Accessories: GPS, Entertainment
USB Dedicated Charging Ports and Battery Chargers
12 V and 24 V Industrial, Automotive and Communications Power Systems
Product Description
ANSC PART# | ANSC- TPS54540DDA |
Part# | TPS54540DDA |
Type： | Integrated Circuits |
Manufactor | Original |
DC | new |
Product Description
Product Attributes
TYPE | DESCRIPTION |
|---|---|
Category | Integrated Circuits (ICs) Power Management (PMIC) Voltage Regulators - DC DC Switching Regulators |
Mfr | Texas Instruments |
Series | Eco-Mode? |
Packaging | Tube |
Part Status | Not For New Designs |
Function | Step-Down |
Output Configuration | Positive |
Topology | Buck, Split Rail |
Output Type | Adjustable |
Number of Outputs | 1 |
Voltage - Input (Min) | 4.5V |
Voltage - Input (Max) | 42V |
Voltage - Output (Min/Fixed) | 0.8V |
Voltage - Output (Max) | 41.1V |
Current - Output | 5A |
Frequency - Switching | 100kHz ~ 2.5MHz |
Synchronous Rectifier | No |
Operating Temperature | -40°C ~ 150°C (TJ) |
Mounting Type | Surface Mount |
Package / Case | 8-PowerSOIC (0.154", 3.90mm Width) |
Supplier Device Package | 8-SO PowerPad |
Base Product Number | TPS54540 |
Product datasheet
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