LM2695 High Voltage (30V, 1.25A) Step Down Switching Regulator | TI.com

LM2695 (ACTIVE) High Voltage (30V, 1.25A) Step Down Switching Regulator

 

Recommended alternative parts

  • LM2694  -  Lower Current Version, 600mA

Description

The LM2695 Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.25A to the load. This buck regulator contains a 33V N-Channel Buck Switch, and is available in the thermally enhanced WSON-10 and HTSSOP-14 packages. The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation. The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The current limit detection is set at 1.25A. Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.

Features

  • Integrated 33V, N-Channel Buck Switch
  • Integrated Start-Up Regulator
  • Input Voltage Range: 8V to 30V
  • No Loop Compensation Required
  • Ultra-Fast Transient Response
  • Operating Frequency Remains Constant with Load Current and Input Voltage
  • Maximum Duty Cycle Limited During Start-Up
  • Adjustable Output Voltage
  • Valley Current Limit At 1.25A
  • Precision Internal Reference
  • Low Bias Current
  • Highly Efficient Operation
  • Thermal Shutdown

Package

  • 10-Pin WSON (4 mm x 4 mm)
  • 14-Pin HTSSOP
  • Exposed Thermal Pad For Improved Heat Dissipation

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Typical Applications

  • High Efficiency Point-Of-Load (POL) Regulator
  • Non-Isolated Telecommunication Buck Regulator
  • Secondary High Voltage Post Regulator

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LM2695 Order now 8     30     2.5     24     1.25     1     45     750     1.7     Enable
Over Current Protection
UVLO Fixed    
Constant on-time (COT)     94     -40 to 125     Catalog     HTSSOP | 14
WSON | 10    
Converter     14HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 14)
10WSON: 16 mm2: 4 x 4 (WSON | 10)