Single Phase PWM Controller with Light-Load Efficiency Optimization

The L6738 is a single-phase step-down controller with integrated high-current drivers that provides complete control logic and protection to realize a DC-DC converter.

The device flexibility allows the management of conversions with power input VINas low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus.

The L6738 features a proprietary algorithm that allows light-load efficiency optimization, boosting efficiency without compromising the output voltage ripple.

The integrated 0.8 V reference allows the generation of output voltages with ±0.5% accuracy over line and temperature variations.

The oscillator is programmable up to 600 kHz.

The L6738 provides a programmable dual-level overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR.

The L6738 is available in a VFQFPN 16 3x3 mm package.

Key Features

  • Flexible power supply from 5 V to 12 V bus
  • Power conversion input as low as 1.5 V
  • Light-load efficiency optimization
  • Embedded bootstrap diode
  • VIN detector
  • 0.8 V internal reference
  • 0.5% output voltage accuracy
  • Remote GND recovery
  • High-current integrated drivers
  • Sensorless and programmable precise-OC sense across inductor DCR
  • OV protection
  • Programmable oscillator up to 600 kHz
  • LS-less to manage pre-bias startup
  • Adjustable output voltage
  • Disable function
  • Internal soft-start
  • VFQFPN 16 3x3 mm package

电路原理图

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circuit_diagram_18133_thumbnail.png

设计

技术文档

产品规格
Description Version Size
DS7008 DS7008: Single-phase PWM controller with light-load efficiency optimization 2.0 773 KB

出版刊物和宣传资料

手册
Description Version Size
Brochure Power management guide 05.2016 7 MB

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样片和购买

型号 Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L6738TR VFQFPN 16 3x3x1.0 Tape And Reel Active - - NEC EAR99 PHILIPPINES MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

质量和可靠性

型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6738TR ActiveVFQFPN 16 3x3x1.0IndustrialEcopack2 0 0
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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