Features: · Low Start-up Voltage 0.9V· Fixed 300kHZ Operating Frequency· Built-In Internal Soft Start Circuit· Low Operating Current· 3.3V and 5V (±2.5%) Fixed (APW7077) or Adjustable Output Voltage (APW7077A)· High Efficiency Up to 88% at 400mA Output Current· High Output Current Up to 1A· Compac...
APW7077A: Features: · Low Start-up Voltage 0.9V· Fixed 300kHZ Operating Frequency· Built-In Internal Soft Start Circuit· Low Operating Current· 3.3V and 5V (±2.5%) Fixed (APW7077) or Adjustable Output Voltage...
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Symbol |
Parameter |
Value |
Unit |
VDD |
Supply voltage |
-0.3 to 7 |
V |
VIO |
Input / output pins (CE, FB, EXT) |
-0.3 to 7 |
V |
TA |
Operating Ambient Temperature Range |
-40 to 85 |
°C |
TJ |
Junction Temperature Range |
-40 to 150 |
°C |
TSTG |
Storage Temperature Range |
-65 to +150 |
°C |
TS |
Soldering Temperature |
300, 10 seconds |
°C |
VESD |
Minimum ESD Rating |
±2 |
KV |
The APW7077/A series are multi- function PWM step-upDC-DCconverterwithanadaptivevoltagemode controller and higher efficiency application from one to four cells battery packs. The APW7077/A series are set PWM operating mode, voltage-mode to follow portable application. And built-in driver pin, EXT pin,for connecting to an external transistor or MOSFET during light load, the device will automatically skip switching cycles to maintain high efficiency. The APW7077/A series consists of PWM controller,reference voltage, phase compensation, oscillator,soft-start, driver block. It will provide to operate suitable voltage without external compensation circuit. The APW7077/A series have fixed voltage and adjustable voltage version from a wide input voltage ranges 0.7V to 5.5V for step-up DC-DC converter. The start-up is guaranteed at 1V and the device is operating down to 0.7V. And providing up to 300mA loading current.Besides, low quiescent current (switch-off) is guaranteed.