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7.5-100V Wide Vin, 600mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters

Inventory: 8,399

Quality information

RoHS Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-3-260C-168 HR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
HSOIC (DDA) | 8 95 | TUBE
-40 to 125
Package | Pins HSOIC (DDA) | 8
Package qty | Carrier 95 | TUBE
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the LM34927

  • Wide 7.5-V to 100-V Input Range
  • Integrated 600-mA High-Side
    and Low-Side Switches
  • No Schottky Required
  • Constant On-Time Control
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Nearly Constant Operating Frequency
  • Intelligent Peak Current Limit
  • Adjustable Output Voltage From 1.225 V
  • Precision 2% Feedback Reference
  • Frequency Adjustable to 1 MHz
  • Adjustable Undervoltage Lockout (UVLO)
  • Remote Shutdown
  • Thermal Shutdown
  • Packages:
    • 8-pin WSON
    • 8-pin SO PowerPAD™

All trademarks are the property of their respective owners.

Description for the LM34927

The LM34927 regulator features all of the functions needed to implement a low-cost,efficient, isolated bias regulator. This high-voltage regulator contains two 100-V N-channel MOSFETswitches — a high-side buck switch and a low-side synchronous switch. The Constant on-time (COT)control scheme employed in the LM34927 device requires no loop compensation and provides excellenttransient response. The regulator operates with an on-time that is inversely proportional to theinput voltage. This feature allows the operating frequency to remain relatively constant. Anintelligent peak current limit is implemented with integrated sense circuit. Other features includea programmable input undervoltage comparator to inhibit operation during low-voltage conditions.Protection features include thermal shutdown and VCC undervoltage lockout(UVLO). The LM34927 device is offered in WSON-8 and SO PowerPAD-8 plastic packages.


Qty Price (USD)
1-99 2.545
100-249 2.23
250-999 1.564
1,000+ 1.26

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 5,919
Qty | Price (USD) 1ku | 1.05 1-99 2.121 100-249 1.859 250-999 1.303 1,000+ 1.05
Custom reel may be available