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LTC4244IGN датащи(PDF) 9 Page - Linear Technology

номер детали LTC4244IGN
подробное описание детали  Rugged, CompactPCI Bus Hot Swap Controllers
PDF  28 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTC4244IGN датащи(HTML) 9 Page - Linear Technology

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LTC4244/LTC4244-1
42441f
3.3VIN (Pin 17): 3.3V Supply Sense Input. An undervolt-
age lockout circuit prevents the switches from turning on
when the voltage at the 3.3VIN pin is less than 2.5V. If no
3.3V input supply is available, short the 3.3VIN pin to the
5VIN pin.
3.3VOUT (Pin 18): Analog Input Used to Monitor the 3.3V
Output Supply Voltage. The PWRGD pin cannot pull low
until the 3.3VOUT pin voltage exceeds 2.9V. If no 3.3V input
supply is available, tie the 3.3VOUT pin to the 5VOUT pin. A
200
Ω active pull-down discharges 3.3VOUT to ground
when the power switches are turned off.
PI FU CTIO S
VEEOUT (Pin 19): -12V Supply Output. A 1Ω switch is
connected between VEEIN and VEEOUT. VEEOUT must be less
than –11.1V before the PWRGD pin pulls low. The VEEOUT
power good comparator is disabled for the LTC4244-1. A
390
Ω active pull-up discharges VEEOUT to ground when
the power switches are turned off.
12VOUT (Pin 20): 12V Supply Output. A 0.5Ω switch is
connected between 12VIN and 12VOUT. 12VOUT must
exceed 11.1V before the PWRGD pin can pull low. A 440
Ω
active pull-down discharges 12VOUT to ground when the
power switches are turned off.



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