MAX8722 Maxim Integrated Products, MAX8722 Datasheet - Page 2

• Manufacturer Part Number: MAX8722
• Description: Low-Cost CCFL Backlight Controller
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
ABSOLUTE MAXIMUM RATINGS
BATT to GND..........................................................-0.3V to +30V
BST1, BST2 to GND ...............................................-0.3V to +36V
BST1 to LX1, BST2 to LX2 ........................................-0.3V to +6V
CNTL, FREQ, SYNC, V
COMP, DPWM, ILIM, TFLT to GND ............-0.3V to (V
GH1 to LX1 ..............................................-0.3V to (V
GH2 to LX2 ..............................................-0.3V to (V
GL1, GL2 to GND .......................................-0.3V to (V
IFB, ISEC, VFB to GND................................................-3V to +6V
Low-Cost CCFL Backlight Controller
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
BATT Input Voltage Range
BATT Quiescent Current
BATT Quiescent Current,
Shutdown
V
Operation
V
V
Threshold
V
Hysteresis
GH1, GH2, GL1, GL2 On-
Resistance, High
GH1, GH2, GL1, GL2 On-
Resistance, Low
GH1, GH2, GL1, GL2 Maximum
Output Current
BST1, BST2 Leakage Current
Resonant Frequency Range
Minimum Off-Time
Maximum Off-Time
Current-Limit Threshold
LX1 to PGND, LX2 to PGND
(Fixed)
Current-Limit Threshold
LX1 to PGND, LX2 to PGND
(Adjustable)
CC
CC
CC
CC
_______________________________________________________________________________________
Output Voltage, Normal
Output Voltage, Shutdown
Undervoltage-Lockout
Undervoltage-Lockout
PARAMETER
BATT
CC
= 12V, V
, V
DD
to GND ...................-0.3V to +6V
CC
V
V
V
SHDN = GND
V
0 < I
SHDN = GND, no load
V
V
I
I
V
Guaranteed by design
ILIM = V
V
V
= V
TEST
TEST
CC
CC
SHDN
SHDN
CC
CC
BST
ILIM
ILIM
DD
LOAD
= V
= V
rising (leaving lockout)
falling (entering lockout)
_ = 12V, V
= 10mA, V
= 10mA, V
= 0.5V
= 2.0V
, V
= V
= 5.5V, 6V < V
DD
DD
CC
SHDN
< 10mA
CC
= V
= open
, V
BST1
BST2
= 5.3V, T
BATT
LX
IFB
CC
CC
CC
DD
_ = 7V
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
= 1V
= V
= V
CONDITIONS
BATT
DD
DD
A
= 0°C to +85°C. Typical values are at T
= 5.3V
= 5.3V
< 28V,
V
V
SHDN to GND...........................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
Continuous Power Dissipation (T
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
BATT
BATT
24-Pin QSOP (derate 9.5mW/°C above +70°C)........761.9mW
= 28V
= V
CC
= 5V
5.25
MIN
340
180
370
4.6
5.5
3.5
4.0
30
24
80
A
= +25°C, unless otherwise noted.)
A
= +70°C)
TYP
5.40
200
470
200
100
400
4.6
0.3
20
10
33
1
6
MAX
28.0
5.55
4.58
600
220
120
430
5.5
5.5
20
37
20
80
43
2
2
5
UNITS
kHz
mA
mV
mV
mV
µA
µA
ns
µs
V
V
V
V
A