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Details for TPS54821RHLR by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
DC/DC CONV SYNC BUCK 1.6MHZ VQFN-14
TPS54821RHLR image

TPS54821RHLR by Texas Instruments

DC/DC CONV SYNC BUCK 1.6MHZ VQFN-14
Features
0.6V u00b11% Voltage Reference Over Temperature
200 kHz to 1.6 MHz Switching Frequency
Adjustable Input Undervoltage Lockout
Adjustable Slow Start/Power Sequencing
Integrated 26 mu2126 / 19 mu2126 MOSFETs
Low 2 u00b5A Shutdown Quiescent Current
Monotonic Start-Up into Pre-biased Outputs
Power Good Output Monitor for Undervoltage and Overvoltage
Software Tools Available
Split Power Rail: 1.6 V to 17 V on PVIN
Synchronizes to External Clock
Part Information
TPS54821RHLR image
RoHS Compliant
Description
The TPS54821 in thermally enhanced 3.5 mm x 3.5 mm QFN package is a full featured 17 V, 8 A synchronous step down converter which is optimized for small designs through high efficiency and integrating the high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor's footprint. The output voltage startup ramp is controlled by the SS/TR pin which allows operation as either a stand alone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins. Cycle by cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit which prevents current runaway. There is also a low-side sinking current limit which turns off the low-side MOSFET to prevent excessive reverse current. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal hiccup protection disables the device when the die temperature exceeds the thermal shutdown temperature and enables the part again after the built-in thermal shutdown hiccup time.
Specifications
Topology:
Synchronous Buck (Step Down)
Input Voltage Min:
4.5V
Input Voltage Max:
17V
No. of Outputs:
1Outputs
DC / DC Converter IC Case:
VQFN
No. of Pins:
14Pins
Output Current:
8A
Output Voltage Min:
600mV
Output Voltage Max:
15V
Switching Frequency:
1.6MHz
Operating Temperature Max:
125°C
Product Range:
-
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (27-Jun-2018)
Alternate Descriptions
DC/DC CONV, SYNC BUCK, 1.6MHZ, VQFN-14; Topology:Synchronous Buck (Step Down); Input Voltage Min:4.5V; Input Voltage Max:17V; No. of Outputs:1Outputs; DC / DC Converter IC Case:VQFN; No. of Pins:14Pins; Output Current:8A; Output RoHS Compliant: Yes Newark Electronics
Conv DC-DC Single Step Down 4.5V to 17V 14-Pin QFN EP T/R Avnet America
Conv DC-DC Single Step Down 4.5V to 17V 14-Pin QFN EP T/R Avnet Europe