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TC2054/TC2055/TC2186 pdf Datas
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大小:666 |
2008-08-05
张静
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The TC2054, TC2055 and TC2186 are high accuracy
(typically ±0.4%) CMOS upgrades for older (bipolar)
low dropout regulators. Designed specifically for battery-
operated systems, the devices’ total supply current
is typically 55 μA at full load (20 to 60 times lower than
in bipolar regulators).
The devices’ key features include low noise operation,
low dropout voltage – typically 45 mV (TC2054); 90 mV
(TC2055); and 140 mV (TC2186) at full load - and fast
response to step changes in load. An error output
(ERROR) is asserted when the devices are out-of-regulation
(due to a low input voltage or excessive output
current). Supply current is reduced to 0.5 μA (max) and
both VOUT and ERROR are disabled when the shutdown
input is low. The devices also incorporate overcurrent
and overtemperature protection.
The TC2054, TC2055 and TC2186 are stable with a
low esr ceramic output capacitor of 1 μF and have a
maximum output current of 50 mA, 100 mA and
150 mA, respectively. This LDO Family also features a
fast response time (60 μs typically) when released from
shutdown.
(typically ±0.4%) CMOS upgrades for older (bipolar)
low dropout regulators. Designed specifically for battery-
operated systems, the devices’ total supply current
is typically 55 μA at full load (20 to 60 times lower than
in bipolar regulators).
The devices’ key features include low noise operation,
low dropout voltage – typically 45 mV (TC2054); 90 mV
(TC2055); and 140 mV (TC2186) at full load - and fast
response to step changes in load. An error output
(ERROR) is asserted when the devices are out-of-regulation
(due to a low input voltage or excessive output
current). Supply current is reduced to 0.5 μA (max) and
both VOUT and ERROR are disabled when the shutdown
input is low. The devices also incorporate overcurrent
and overtemperature protection.
The TC2054, TC2055 and TC2186 are stable with a
low esr ceramic output capacitor of 1 μF and have a
maximum output current of 50 mA, 100 mA and
150 mA, respectively. This LDO Family also features a
fast response time (60 μs typically) when released from
shutdown.
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