EL5126CLZ Intersil, EL5126CLZ Datasheet - Page 10

• Manufacturer Part Number: EL5126CLZ
• Description: IC VOLTAGE GEN 8CH TFT-LCD 32QFN
• Manufacturer: Intersil

Specifications of EL5126CLZ

• Applications: Converter, TFT, LCD
• Voltage - Input: 4.5 ~ 16.5 V
• Number Of Outputs: 8
• Voltage - Output: 0.5 ~ 14.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The maximum power dissipation actually produced by the IC
is the total quiescent supply current times the total power
supply voltage and plus the power in the IC due to the loads.
when sourcing, and:
when sinking.
Where:
• i = 1 to total 8
• V
• I
• V
• I
By setting the two P
can solve for the R
package power dissipation curves provide a convenient way
to see if the device will overheat.
P
P
DMAX
DMAX
S
LOAD
S
OUT
= Quiescent current
= Supply voltage
i = Output voltage of the i channel
=
i = Load current of the i channel
=
V
V
S
S
×
×
I
I
S
S
+
+
LOAD
Σ V
Σ V
DMAX
(
[
(
OUT
S
's to avoid the device overheat. The
- V
equations equal to each other, we
i
×
OUT
10
I
LOAD
i )
×
i
)
I
LOAD
i
]
EL5126
POWER SUPPLY BYPASSING AND PRINTED CIRCUIT
BOARD LAYOUT
Good printed circuit board layout is necessary for optimum
performance. A low impedance and clean analog ground
plane should be used for the EL5126. The traces from the
two ground pins to the ground plane must be very short. The
thermal pad of the EL5126 should be connected to the
analog ground plane. Lead length should be as short as
possible and all power supply pins must be well bypassed. A
0.1µF ceramic capacitor must be place very close to the V
V
tantalum capacitor should be placed to the V
V
APPLICATION USING THE EL5126
In the first application drawing, the schematic shows the
interconnect of a pair of EL5126 chips connected to give
8 gamma corrected voltages above the V
8 gamma corrected voltages below the V
REFH
REFL
, V
pins.
REFL
, and CAP pins. A 4.7µF local bypass
COM
COM
S
, V
voltage.
voltage, and
REFH
, and
S
,