Non sync buck Hysteretic Controller for 9-18V input and 8V,3A output

(ACTIVE) PMP7771

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Description

This circuit is a non synchronous buck hysteretic controller. It uses a low ESR ceramic capacitor at the output and uses a series resistor to generate the ripple. It uses LM3489 which is a high efficiency PFET switching regulator controller. The PFET architecture also allows for low component count as well as ultra-low dropout, 100% duty cycle operation. Another benefit is high efficiency operation at light loads without an increase in output ripple.

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Parametrics
 PMP7771.1
(Output Voltage 1)
Vin (Min) (V)9
Vin (Max) (V)18
Vout (Nom) (V)8
Iout (Max) (A)3
Output Power (W)24
Isolated/Non-IsolatedNon-Isolated
Input TypeDC
TopologyBuck- Non Sync

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM3489  Hysteretic PFET Buck Controller with Enable Pin  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules
LM3489-Q1  Automotive Grade 4.5-35V, Hysteretic Non-Synchronous PFET Buck Controller with Enable Pin  Step-Down (Buck)  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views
PDF 230 09 Jan 2012 26
Design files (2)
Title Abstract Type Size (KB) Date Views
PDF 97 09 Jan 2012 16
PDF 173 09 Jan 2012 26

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