參數(shù)資料
型號(hào): MAX1516
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: TFT-LCD DC-DC Converters with Operational Amplifiers
中文描述: TFT-LCD DC-DC轉(zhuǎn)換器,帶有運(yùn)算放大器
文件頁(yè)數(shù): 18/26頁(yè)
文件大?。?/td> 919K
代理商: MAX1516
M
TFT-LCD DC-DC Converters with
Operational Amplifiers
18
______________________________________________________________________________________
Fault Protection
During steady-state operation, if the output of the main
regulator or any of the linear-regulator outputs does not
exceed its respective fault-detection threshold, the
MAX1516/MAX1517/MAX1518 activate an internal fault
timer. If any condition or combination of conditions indi-
cates a continuous fault for the fault-timer duration
(55ms typ), the MAX1516/MAX1517/MAX1518 set the
fault latch to shut down all the outputs except the refer-
ence. Once the fault condition is removed, cycle the
input voltage (below the UVLO falling threshold) to
clear the fault latch and reactivate the device. The fault-
detection circuit is disabled during the soft-start time.
Thermal-Overload Protection
Thermal-overload protection prevents excessive power
dissipation from overheating the MAX1516/MAX1517/
MAX1518. When the junction temperature exceeds T
J
=
+160
°
C, a thermal sensor immediately activates the
fault protection, which shuts down all outputs except
the reference, allowing the device to cool down. Once
the device cools down by approximately 15
°
C, cycle
the input voltage (below the UVLO falling threshold) to
clear the fault latch and reactivate the device.
The thermal-overload protection protects the controller
in the event of fault conditions. For continuous opera-
tion, do not exceed the absolute maximum junction
temperature rating of T
J
= +150
°
C.
MAX1516
MAX1517
MAX1518
FB OK
FBP OK
FBN OK
2.5V
5
μ
A
REF
DRN
COM
SRC
Q1
Q2
Q3
1k
CTL
DEL
IN
Figure 7. Switch-Control Block
相關(guān)PDF資料
PDF描述
MAX1516ETJ TFT-LCD DC-DC Converters with Operational Amplifiers
MAX1517 TFT-LCD DC-DC Converters with Operational Amplifiers
MAX1517ETJ TFT-LCD DC-DC Converters with Operational Amplifiers
MAX1518 TFT-LCD DC-DC Converters with Operational Amplifiers
MAX1518ETJ TFT-LCD DC-DC Converters with Operational Amplifiers
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