Novinka:Summit: Single & Dual Programmable Buck Regulators
(Kategória: Semiconductor-ZONE)
Zaslal EdizonTN
30.07.2010-09:39

Summit Microelectronics uviedol novú rodinu programovateľných obvodov rady Power-Management - SMB20X.

Konrétne sa jedná o SMB207, 207A, 208, 208A, 209, 209A single- a dual-output integrované DC-DC regulátory.

Čipy sú v miniatúrnych púzdrach (3mm X 3mm, 20-pad QFN) a pre svojnu funkciu vyžadujú minimum externých súčiastok.

Vlastnosti

• Single/Dual Step-Down DC-DC Outputs
  - Integrated power MOSFET switches
  - 1A/2A/4A output current with built in current limit
  - Input voltage range: +4.5V to +16V
  - +0.8V to +5.0V output voltage (+/-2.5% accuracy)
  - Automatic PFM mode for light load efficiency
  - 180° phase interleave (SMB207/A/SMB208/A)
  - Integrated frequency compensation
  - Input undervoltage lockout (UVLO)
  
• Integrated Power Control and Programmability
  - I2C Digital or Pin Control
  - Coarse and Fine Output Voltage Setting
  
  • 16-level “Coarse” nominal setpoint
    - +0.8V to +1.8V @ 100mV/step
    - +2.5/2.3/3.0/3.3/5.0V
    
  • 8-level “Fine” Margining (20XA only)
    - +1.14% to +7.95% (vs. coarse setting)
  
  - PWM frequency: 500kHz or 1MHz
  - Output up/down sequence (SMB207/A/208/A)
  - Digital output softstart/stop
  - Output UV monitoring with PGOOD/RESET output
  - Independent output enable pins (SMB207/A/208/A)

Aplikačné zapojenie


Cena, dostupnosť
Čipy sú už dostupné v cenách:
od 1.00 USD do 1.40 USD (@10k ks).

Odkazy
SMB20X homepage
Datasheet

Distribúcia
viď. Adresár

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