EL7641ILTZ Intersil, EL7641ILTZ Datasheet - Page 11
![IC BOOST REG DC/DC TFT-LCD 32QFN](/photos/6/88/68833/32-qfn_pkg_sml.jpg)
EL7641ILTZ
Manufacturer Part Number
EL7641ILTZ
Description
IC BOOST REG DC/DC TFT-LCD 32QFN
Manufacturer
Intersil
Datasheet
1.EL7640ILTZ-T7.pdf
(19 pages)
Specifications of EL7641ILTZ
Applications
Converter, TFT, LCD
Voltage - Input
2.6 ~ 5.5 V
Number Of Outputs
1
Voltage - Output
5.5 ~ 20 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-WQFN, 32-miniQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The current through MOSFET is limited to 3A peak. This
restricts the maximum output current based on the following
equation:
I
OMAX
=
I
LMT
–
∆I
--------
2
L
FBB
×
V
---------
V
IN
O
I
I
FB
REF
11
FIGURE 18. THE BLOCK DIAGRAM OF THE BOOST CONTROLLER
COMPENSATION
AMPLIFIER
AMPLIFIER
CURRENT
GENERATOR
REFERENCE
GM
SLOPE
EL7640, EL7641, EL7642
COMP
CLOCK
Where ∆I L is peak to peak inductor ripple current, and is set
by:
where f
∆I
AMPLIFIER
VOLTAGE
LOGIC
PWM
L
=
V
---------
S
L
IN
is the switching frequency.
×
---- -
f
D
S
SHUTDOWN
& START-UP
BUFFER
CONTROL
I
REF
I
FB
PGND
LX
February 22, 2006
FN7415.2