參數(shù)資料
型號(hào)： L6610N
廠(chǎng)商： STMICROELECTRONICS
元件分類(lèi)： 電源管理
英文描述： 6-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP24
封裝： 0.300 INCH, SDIP-24
文件頁(yè)數(shù)： 15/29頁(yè)
文件大?。?/td> 600K
代理商： L6610N
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
L6610
22/29
DFAULT; in the "Application ideas" section, another simple circuit is showed to guarantee the same pro-
tection without the SCR.
– Dmon input undervoltage: when an undervoltage on Dmon is detected, MFAULT is put high, Cout is
pulled low (an internal OCP_BOUNCE signal is generated, see fig. 21) and PW_OK falls down. This
function is enabled 64ms after the UVLO signal falls down. Debounce logic is implemented so that
MFAULT and OCP_BOUNCE signals are generated only if the undervoltage condition lasts more than
500s.
The Dmon UV and OV protections can be set to work with thresholds set for 5V or 3.3V output voltage:
the choice depends on the IC programming.
– Overcurrent protection: the IC provides an on-board overcurrent protection for 5V and 12V main input
pins. Optionally, it is possible to switch the monitoring from 5V to 3.3V output using the IC programming
(see "On board trimming and mode operating" section).
Figure 22. Fault timing diagram
The overcurrent function is implemented with a comparator detecting the voltage drop across an external cur-
rent sense resistor in series with the output. If this voltage gets higher than a fixed threshold (50mV for 5V input
monitoring and 120mV for 12V input monitoring), an internal MAIN_OC signal is generated; a 450
s debounce
time exists to assert MFAULT high. Depending on the selected operating mode, MFAULT will be latched high
(default latching mode) or pulled low again after about 1s to allow autorecovery (bounce mode).
To disable this function, the input sense pin may be left open (an internal pull-down is provided), shorted to
ground or shorted to 5V or 12V pin.
Dmon(*)
Mfault
POK
Dfault current
Cout
Output
Mfault
POK
Main output’s overvoltage
Output
Mfault
POK
Main output’s undervoltage
Auxiliary output’s overvoltage
Auxiliary output’s undervoltage
(*) Dmon is connected to the Auxiliary output Rail
相關(guān)PDF資料
PDF描述
L6611DTRT POWER SUPPLY SUPPORT CKT, PDSO20
L6611D 5-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
L6611N 5-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP20
L6668TR 0.8 A SWITCHING CONTROLLER, 105 kHz SWITCHING FREQ-MAX, PDSO16
L6701TR 1.5 A SWITCHING REGULATOR, 110 kHz SWITCHING FREQ-MAX, PDSO36
相關(guān)代理商/技術(shù)參數(shù)
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