MAX1610CSE Maxim Integrated Products, MAX1610CSE Datasheet - Page 10

• Manufacturer Part Number: MAX1610CSE
• Description: IC SMD SO16 BACKLGT
• Manufacturer: Maxim Integrated Products

Specifications of MAX1610CSE

• Display Type: CCFL - Cold Cathode Fluorescent Lamp
• Interface: 2-Wire SMBus
• Current - Supply: 1.5mA
• Voltage - Supply: 4.75 V ~ 26 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Configuration: -
• Digits Or Characters: -
• Other names: 146982A

Digitally Controlled CCFL Backlight
Power Supplies
Table 2. Typical Application Circuit Component Values
a) Resistors
c) Other Components
Note: Component values depend on lamp characteristics. See Table 3 to select values.
Table 3. Selecting Circuit Values for Figure 4
10
Note: f
SYMBOL
SYMBOL
R1
R2
R3
R4
R5
R6
R7
Q1, Q2
D1, D3
______________________________________________________________________________________
(V
D2
L1
T1
VCT = average voltage from the T1 center tap to the emitters of Q1 and Q2 (ignoring Q1, Q2 V
C1 = 0.1µF ± 20%; C2 = ±10% tolerance; R1 = ±1% tolerance.
250
250
300
300
450
500
550
600
ROY
V
RMS
L
)
= Royer oscillator damped resonant oscillation frequency. T1 primary magnetizing inductance (L
VALUE
150k
(Note)
8.2k
510
51k
51k
20
1A NPN switching transistor,
V
50mA silicon diode, V
1A Schottky diode, V
100µH, 1A inductor
6W Royer oscillator transformer, turns ratio 67:1,
secondary (pins 10 and 6) : primary (pins 1 and 3),
primary magnetizing inductance (L
CEO
TOLERANCE
≥ 50V
(mA
±10%
±10%
I
±1%
±5%
±5%
±5%
±5%
3
5
3
5
5
5
5
5
L
RMS
)
DESCRIPTION
BR
BR
≥ 30V
≥ 40V
POWER
RATING
1/16W
1/16W
1/16W
1/16W
1/16W
1/8W
1/8W
22pF
43pF
18pF
36pF
20pF
18pF
18pF
15pF
C2
P
) of 44µH ±20%
b) Capacitors
SYMBOL
C4, C6,
C3, C5
C7, C8
0.715
0.681
0.732
0.715
0.665
0.698
1.21
1.18
C1
C2
C9
R1
GENERIC
2N2222A
1N4148
1N5818
(Note 1)
VALUE
PART
0.1 F
0.1 F
27nF
10 F
(pF)
(V
3.63V
3.61V
4.30V
4.14V
6.55V
7.17V
7.29V
8.41V
VCT
TOLER-
MAX
ANCE
±10%
±20%
SURFACE-MOUNT
CMPD4448, SOT23
±20%
-20%
-50%
FMMT619, SOT23
EC10QS04
CDR125-101
CTX110605
)
PART
WORKING
VOLTAGE
CE,SAT
±25V
±3kV
25V
25V
35V
50.3
43.3
52.1
45.6
51.1
52.1
52.5
53.6
MIN
).
P
) = 44µH ±20%.
f
ROY
MANUFACTURER
Zetex
Central
Nihon
Sumida
Coiltronics
High voltage
Ceramic, larger
values acceptable
Tantalum, low ESR
TYP
58.6
49.7
61.0
52.8
59.7
61.0
61.8
63.1
F ≤ 0.001 @ 1kHz
(kHz)
NOTES
MAX
71.8
60.3
75.1
64.7
73.3
75.1
76.7
78.1