MAX1518BETJ+T Maxim Integrated Products, MAX1518BETJ+T Datasheet - Page 17

IC DC-DC CONV TFT-LCD 32-TQFN

MAX1518BETJ+T

Manufacturer Part Number
MAX1518BETJ+T
Description
IC DC-DC CONV TFT-LCD 32-TQFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX1518BETJ+T

Applications
Converter, TFT, LCD
Voltage - Input
2.6 ~ 6.5 V
Number Of Outputs
1
Voltage - Output
2.6 ~ 13 V
Operating Temperature
-40°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
32-TQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 7. Switch-Control Block
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
MAX1518B activates an internal fault timer. If any con-
dition or combination of conditions indicates a continu-
ous fault for the fault-timer duration (200ms typ), the
MAX1518B sets the fault latch to shut down all the out-
puts except the reference. 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.
DEL
CTL
IN
REF
______________________________________________________________________________________
5µA
Fault Protection
TFT-LCD DC-DC Converter with
Thermal-overload protection prevents excessive power
dissipation from overheating the MAX1518B. When the
junction temperature exceeds T
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
Operational Amplifiers
2.5V
FB OK
FBP OK
FBN OK
Thermal-Overload Protection
MAX1518B
J
= +150°C.
Q1
Q2
J
= +160°C, a thermal
SRC
COM
DRN
17

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