MAX754ESE+ Maxim Integrated Products, MAX754ESE+ Datasheet - Page 11

• Manufacturer Part Number: MAX754ESE+
• Description: IC CNTRLR CONTRAST 16-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX754ESE+

• Display Type: CCFL - Cold Cathode Fluorescent Lamp
• Current - Supply: 500µA
• Voltage - Supply: 4 V ~ 30 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Interface: -
• Configuration: -
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Details

Table 3. Spreadsheet Design Equations
CCFL Specifications
LCD Contrast Voltage Specifications
Royer Specifications
MAX754 Specifications
CCFL Circuit Calculations
LCD Circuit Calculations
Application Circuit Operating Range
Strike Voltage (V
Discharging Tube Current (I
Discharging Tube Voltage (V
Bias Voltage
Output Current
T1 Turns Ratio (Sec/Pri)
T1 Resonating Inductance
C9 Value
C10 Value
Royer Frequency
Reference Voltage
Second Volts Constant
R8 Current-Sensing Resistor
Secondary Voltage Phase vs. Tube
Voltage
T1 Center-Tap Peak Voltage
Secondary Limit Voltage
T1 Center-Tap Limit Peak Voltage
R5/R6
V
L2 Inductance
L2 Peak Currrent
R4/R3
Input Voltage
IN(min)
Full-Load Switching Period
PARAMETER
S
)
______________________________________________________________________________________
L
L
)
)
R
R
V
I
SYMBOL
LAMP,RMS
LAMP,RMS
OTP,RATIO
LCD,RATIO
V
V
L
V
C
C
TAP,PK
V
V
S,RMS
I
T
V
LCD
MAG
phi
R8
LCD
sV
L2
REF
RES
BAL
LIM
w
n
FL
IN
= (2 / PI()) * V
I
= V
LAMP,RMS(max)
= L2(max) * 0.8
0.000008
LCD(max)
= 0.28 *
LCD Contrast Controllers
0.0245
1100
MIN
TAP,PK
/ 2
CCFL Backlight and
= -SQRT(2) * I
= sV(min) / V
= V
= SQRT [1 / (L
= ATAN (-I
(C
= PI() * V
= V
(C
(V
BAL
= SQRT(2) * V
REF
(2 * I
= V
BAL
REF
LCD(max)
* w * + V
S,RMS(max)
/ (V
LAMP,RMS(max)
* w * SIN(phi)) / n
/ (D25 - 0.6 - V
0.000045
2.2E-07
1.5E-11
REF
LCD(max)
LAMP,RMS(max)
IN(min)
TYP
1.25
435
171
LAMP,RMS(max)
MAG
* SQRT(2) /
- V
LAMP,RMS
IN(min)
LIM
+ sV(min) /
* 0.9
* C
- V
/ n
REF
RES
)
REF
)
)
)]
)
/
)
/
= sV(min) ^ 2 / (2 * T
V
= sV(max) / L2(min)
LCD(max)
2.4E-05
0.005
MAX
1500
32.6
18
* I
LCD(min)
FL
11
)
*