Lm2775dsgr DC-DC power chip boost converter
explain
Lm2775 is a voltage stabilizing switched capacitor voltage multiplier that can produce low-noise output voltage. The lm2775 has an input voltage range of 3.1V to 5.5V, an output current of up to 200mA, and can still provide an output current of up to 125mA when the input voltage is as low as 2.7V. When the output current is low, lm2775 can enter PFM mode to reduce its quiescent current.
PFM mode can be enabled or disabled by driving the PFM pin to high or low level. In addition, when the lm2775 is in the off mode, the user can choose to set the outdis pin to high level to pull the output voltage to GND, or set the outdis pin to low level to keep the output voltage in the high resistance state.
Lm2775 adopts ti's 8-pin wafer level small outline leadless (WSON) package, which has excellent heat dissipation characteristics and can prevent component overheating under almost all rated working conditions.
characteristic
• input voltage range: 2.7V to 5.5V
• 5V fixed output
• 200mA output current
• inductance free solution: only 3 small ceramic capacitors are required
• disconnect the load from VIN during shutdown
• current limiting and thermal protection
• 2MHz switching frequency
• support pulse frequency modulation (PFM) operation under light load current conditions (PFM pin is connected to high level)
application
•USB OTG
• high definition multimedia interface (HDMI) power supply
• portable electronics
Lm2775 is a voltage stabilizing switched capacitor voltage multiplier that can produce low-noise output voltage. The lm2775 has an input voltage range of 3.1V to 5.5V, an output current of up to 200mA, and can still provide an output current of up to 125mA when the input voltage is as low as 2.7V. When the output current is low, lm2775 can enter PFM mode to reduce its quiescent current.
PFM mode can be enabled or disabled by driving the PFM pin to high or low level. In addition, when the lm2775 is in the off mode, the user can choose to set the outdis pin to high level to pull the output voltage to GND, or set the outdis pin to low level to keep the output voltage in the high resistance state.
Lm2775 adopts ti's 8-pin wafer level small outline leadless (WSON) package, which has excellent heat dissipation characteristics and can prevent component overheating under almost all rated working conditions.
characteristic
• input voltage range: 2.7V to 5.5V
• 5V fixed output
• 200mA output current
• inductance free solution: only 3 small ceramic capacitors are required
• disconnect the load from VIN during shutdown
• current limiting and thermal protection
• 2MHz switching frequency
• support pulse frequency modulation (PFM) operation under light load current conditions (PFM pin is connected to high level)
application
•USB OTG
• high definition multimedia interface (HDMI) power supply
• portable electronics