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MIC2224

Features: • 2.7V to 5.5V input voltage range• DAC-adjustable output voltage down to 0.3V• 600mA output current in PWM mode• Internally protected 40mΩ bypass switch• Allows direct connection of battery to load• Over 95% efficient• Fully integrated MOS...

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SeekIC No. : 004420737 Detail

MIC2224: Features: • 2.7V to 5.5V input voltage range• DAC-adjustable output voltage down to 0.3V• 600mA output current in PWM mode• Internally protected 40mΩ bypass switch̶...

MIC2224 Data Sheet

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Part Number:
MIC2224
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/26

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Product Details

Description



Features:

• 2.7V to 5.5V input voltage range
• DAC-adjustable output voltage down to 0.3V
• 600mA output current in PWM mode
• Internally protected 40mΩ bypass switch
• Allows direct connection of battery to load
• Over 95% efficient
• Fully integrated MOSFET switches
• Constant 2MHz PWM operation
• Internal soft-start
• 1% line and load regulation
• <1µA shutdown current
• Under-voltage lockout
• Thermal shutdown and current limit protection
• 40°C to +125°C junction temperature range


Application

• Cellular phones
• PDAs


Pinout

Connection Diagram


Specifications

Supply Voltage (VIN) .................................... 0V to 6V
Output Switch Voltage (VSW) ................................ 6V
DAC Input Voltage (VDAC) .................. 0V to Vin+0.3V
Output Switch Current (ISW) .............................. 2.5A
Logic Input Voltage (VEN).................... 0V to VIN+0.3V
Storage Temperature (TS) ............ -65°C to +150°C


Description

The MIC2224 is a high efficiency 2MHz PWM synchronous buck switching regulator optimized for powering 2.5G and 3G CDMA RF Power Amplifiers. The output voltage of MIC2224 can be dynamically adjusted with an external DAC to maximize PA efficiency versus required output power. When the PA requires the highest power, the DAC can be used to enable a low on-resistance, 40mΩ, bypass switch that powers the PA directly from the battery. The 2MHz PWM operation of MIC2224 allows the smallest possible components. It also allows the device to easily meet stringent W-CDMA VOUT response specifications.

The MIC2224 operates from a 2.7V to 5.5V input, making it ideal for single cell Li-Ion applications. The device features built-in power MOSFETs that can supply up to 600mA of output current in PWM mode, or over 1A in bypass mode. The MIC2224 can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC2224 has a junction temperature range of 40°C to +125°C and is available in a 3mm x 3mm MLFTM-10L package.




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