EL7585AILZ-T13 Intersil, EL7585AILZ-T13 Datasheet - Page 15

• Manufacturer Part Number: EL7585AILZ-T13
• Description: IC POWER SUPPLY TFT-LCD 20-QFN
• Manufacturer: Intersil

Specifications of EL7585AILZ-T13

• Applications: Converter, TFT, LCD
• Voltage - Input: 3 ~ 5 V
• Number Of Outputs: 4
• Voltage - Output: 5.5 ~ 20 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

In some circumstances, (depending on ambient temperature
and thermal design of the board), continuous operation at
current limit may result in the over-temperature threshold
being exceeded, which will cause the part to disable
immediately.
All I/O also have ESD protection, which in many cases will
also provide overvoltage protection, relative to either ground
or V
abs max ratings are exceeded.
Component Selection for Start-Up Sequencing and
Fault Protection
The C
to stabilize the V
22nF to 1µF and should not be more than five times the
capacitor on C
The C
range from 47nF minimum to several microfarads - only
limited by the leakage in the capacitor reaching µA levels.
C
above). Note with 220nF on C
typically 50ms and the use of a larger/smaller value will vary
this time proportionally (e.g. 1µF will give a fault time-out
period of typically 230ms).
DEL
DD
REF
DEL
should be at least 1/5 of the value of C
. However, these will not generally operate unless
capacitor is typically 220nF and has a usable
capacitor is typically set at 220nF and is required
DEL
REF
to ensure correct start-up operation.
output. The range of C
15
DEL
the fault time-out will be
REF
REF
is from
(See
EL7585A
Fault Sequencing
The EL7585A has an advanced fault detection system which
protects the IC from both adjacent pin shorts during
operation and shorts on the output supplies.
A high quality layout/design of the PCB, in respect of
grounding quality and decoupling is necessary to avoid
falsely triggering the fault detection scheme - especially
during start-up. The user is directed to the layout guidelines
and component selection sections to avoid problems during
initial evaluation and prototype PCB generation.
March 9, 2006
FN7523.3