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TI TPS51275B-1RUKRRoHS

Manufacturer
TI
MPN
TPS51275B-1RUKR
LCSC Part #
C702257
Packaging
WFQFN-20-EP(3x3)
Customer #
Key Attributes
Dual Synchronous Buck Controller for 5V and 3.3V LDOs
Datasheetpdf iconTI TPS51275B-1RUKR
In-Stock: 29
29 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
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QtyUnit PriceTotal Amount
1+$ 0.7212$ 0.72
10+$ 0.5888$ 5.89
30+$ 0.5218$ 15.65
100+$ 0.4563$ 45.63
500+$ 0.3989$ 199.45
1,000+$ 0.3782$ 378.20
Standard Packaging3000/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - Linear + Switching
ManufacturerTI
PackagingWFQFN-20-EP(3x3)
Synchronous RectifierYes
FunctionStep-down type
Frequency - Switching300kHz;355kHz
Number of Outputs4
Output TypeFixed
Output Voltage5V;3.3V
Quiescent Current180uA
Operating Voltage5V~24V
Operating Temperature-40℃~+85℃
Output Current-
TopologyBuck
FeaturesBuilt-in LDO regulator;Light load efficient mode;Output discharge;Adjustable current limiting;Operating status indication;Overcurrent Protection;Cycle-by-cycle current limiting
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Introduction

AI Translation

The TPS51275B-1 is a cost-effective dual synchronous buck controller designed for notebook system power solutions. The device integrates 5V and 3.3V LDO regulators and requires minimal external components. It can use the 260kHz VCLK output to drive an external charge pump, generating gate drive voltage for load switches without degrading the efficiency of the main converter. The TPS51275B-1 delivers both high efficiency and fast transient response while providing a combined power-good signal. The adaptive on-time D-CAP control scheme ensures convenient and efficient operation. The device supports an input voltage range of 5V to 24V with 5V and 3.3V output voltage options. The TPS51275B-1 is available in a 20-pin 3mm×3mm WQFN package, rated for a temperature range of -40°C to 85°C.

Features

AI Translation
  • Input voltage range: 5V to 24V
  • Output voltage: 5V and 3.3V (adjustable range ±10%)
  • Integrated 100mA, 5V and 3.3V LDO regulators
  • Clock output for charge pump
  • ±1% reference accuracy
  • Adaptive on-time D-CAP mode control architecture supporting 300kHz and 355kHz frequency settings
  • Out-of-Audio (OOA) light-load operation
  • Internal 3.2ms voltage servo soft-start
  • Low-side RDS(on) current sensing
  • Integrated output discharge function
  • Independent enable inputs for switching
  • Dedicated OC setting pin
  • Power Good indicator
  • OVP, UVP, and OCP
  • Non-latching UVLO and OTP protection
  • 20-pin 3mm×3mm WQFN (RUK) package

Applications

AI Translation
  • Laptop
  • Tablet
  • Desktop