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LTC4425,pdf,datasheet,Linear S
消耗积分:10 |
格式:rar |
大小:444 |
2010-03-21
张虎豹
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The LTC4425 is a constant-current/constant-voltage linear
charger designed to charge a 2-cell supercap stack from
either a Li-Ion/Polymer battery, a USB port, or a 2.7V to
5.5V current-limited supply. The part operates as an ideal
diode with an extremely low 50mΩ on-resistance making it
suitable for high peak-power/low average power applications.
The LTC4425 charges the output capacitors to an externally
programmed output voltage in LDO mode at a constant
charge current, or to VIN in normal mode with a smart charge
current profi le to limit the inrush current until the VIN to VOUT
differential is less than 250mV. In addition the LTC4425 can
be set to clamp the output voltage to 4.9V or 5.4V.
charger designed to charge a 2-cell supercap stack from
either a Li-Ion/Polymer battery, a USB port, or a 2.7V to
5.5V current-limited supply. The part operates as an ideal
diode with an extremely low 50mΩ on-resistance making it
suitable for high peak-power/low average power applications.
The LTC4425 charges the output capacitors to an externally
programmed output voltage in LDO mode at a constant
charge current, or to VIN in normal mode with a smart charge
current profi le to limit the inrush current until the VIN to VOUT
differential is less than 250mV. In addition the LTC4425 can
be set to clamp the output voltage to 4.9V or 5.4V.
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