MAX8759 Maxim Integrated Products, MAX8759 Datasheet - Page 5

• Manufacturer Part Number: MAX8759
• Description: CCFL Backlight Controller
• Manufacturer: Maxim Integrated Products

ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
BATT Input Voltage Range
BATT Quiescent Current
V
V
V
GH1, GH2, GL1, GL2 On-Resistance,
Low State
GH1, GH2, GL1, GL2 On-Resistance,
High State
Resonant Frequency Range
Minimum On-Time
Maximum Off-Time
Current-Limit Threshold
Zero-Current Crossing Threshold
IFB1, IFB2 Input Voltage Range
IFB1 Regulation Point
IFB2 Regulation Point
IFB1, IFB2 Input Bias Current
IFB1, IFB2 Lamp-Out Threshold
IFB1, IFB2 to COMP Transconductance
COMP Output Impedance
COMP Discharge Current During Overvoltage
or Overcurrent Fault
COMP Discharge Current During DPWM
Off-Time
ISEC Input Voltage Range
ISEC Overcurrent Threshold
VFB Input Voltage Range
VFB Input Impedance
VFB Overvoltage Threshold
VFB Undervoltage Threshold
DPWM Oscillator Frequency
PWMO Output Impedance
CC
CC
CC
Output Voltage, Normal Operation
Output Voltage, Shutdown
Undervoltage Lockout Threshold
Low-Cost, SMBus, CCFL Backlight Controller
PARAMETER
_______________________________________________________________________________________
BATT
= 12V, V
CC
= V
DD,
T
A
= -40°C to +85°C.) (Note 1)
V
V
MAX8759 is enabled
MAX8759 is enabled, 6V < V
0 < I
MAX8759 is disabled, no load
V
V
I
I
Guaranteed by design
LX1 - PGND1, LX2 - PGND2
LX1 - PGND1, LX2 - PGND2
-3V < V
0.5V < V
V
V
R
TEST
TEST
CC
CC
CC
CC
VFB
COMP
FREQ
LOAD
= V
= V
rising (leaving lockout)
falling (entering lockout)
= 2.6V or V
= 100mA, V
= 100mA, V
= 169kΩ
IFB1,2
= 1.5V
DD
DD
COMP
< 10mA
= V
= open
< 0
< 4V
BATT
CONDITIONS
ISEC
CC
CC
= V
= V
= 1.5V
V
V
DD
DD
BATT
BATT
= 5V
= 5V
BATT
= 28V
= V
CC
< 28V,
= 5V
-230
1.18
MIN
350
410
760
775
565
500
150
210
203
5.2
3.5
3.7
2.2
4.5
5.5
30
40
60
90
20
-3
-3
-4
3
6
TYP
MAX
2000
28.0
1.26
700
450
810
825
635
160
130
450
280
217
5.5
5.5
5.5
4.3
2.4
18
80
80
13
+3
25
+3
+4
60
5
5
6
UNITS
kHz
MΩ
MΩ
mA
mV
mV
mV
mV
mV
mV
µA
µS
µA
µA
Hz
kΩ
ns
µs
Ω
Ω
V
V
V
V
V
V
V
V
V
5