MAX8722 Maxim Integrated Products, MAX8722 Datasheet - Page 4

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

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Low-Cost CCFL Backlight Controller
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
ELECTRICAL CHARACTERISTIC
(Circuit of Figure 1. V
Dual Mode is a trademark of Maxim Integrated Products, Inc.
4
SHDN Input Low Voltage
SHDN Input High Voltage
SHDN Input Bias Current
FREQ Dual Mode
Level
FREQ Input Regulation Level
FREQ Input Bias Current
TFLT Charge Current
TFLT Trip Threshold
BATT Input Voltage Range
BATT Quiescent Current
BATT Quiescent Current,
Shutdown
V
Operation
V
V
Threshold
GH1, GH2, GL1, GL2 On-
Resistance, High
GH1, GH2, GL1, GL2 On-
Resistance, Low
BST1, BST2 Leakage Current
Resonant Frequency Range
Minimum Off-Time
Maximum Off-Time
Current-Limit Threshold
LX1 - PGND, LX2 - PGND (Fixed)
CC
CC
CC
_______________________________________________________________________________________
Output Voltage, Normal
Output Voltage, Shutdown
Undervoltage-Lockout
PARAMETER
PARAMETER
BATT
Input High
BATT
= 12V, V
= 12V, V
CC
CC
= V
FREQ = V
V
V
V
V
V
V
SHDN = GND
V
0 < I
SHDN = GND, no load
V
V
I
I
V
Guaranteed by design
ILIM = V
TEST
TEST
ISEC
ISEC
ISEC
CC
CC
SHDN
SHDN
CC
CC
BST
= V
DD
LOAD
= V
= V
rising (leaving lockout)
falling (entering lockout)
_ = 12V, V
DD
=10mA, V
=10mA, V
, V
< 1.25V and V
< 1.25V and V
> 1.25V and V
= V
= 5.5V, 6V < V
, V
DD
DD
SHDN
CC
CC
< 20mA
SHDN
CC
= V
= open
, V
= 5.3V, T
BATT
LX
CC
CC
IFB
= 5.3V, T
_ = 7V
= V
= V
= 1V
IFB
IFB
IFB
CONDITIONS
CONDITIONS
BATT
DD
DD
A
< 600mV; V
> 600mV; V
< 600mV; V
= 0°C to +85°C. Typical values are at T
= 5.3V
= 5.3V
A
< 28V
= -40°C to +85°C, unless otherwise noted.) (Note 1)
V
V
BATT
BATT
FLT
FLT
FLT
= 28V
= V
= 2V
= 2V
= 2V
CC
= 5V
V
0.35
0.95
3.95
5.25
MIN
MIN
340
180
2.1
4.6
5.5
3.5
4.0
CC
A
30
24
-1
= +25°C, unless otherwise noted.)
-
V
CC
TYP
1.00
4.10
TYP
230
116
-1
/ 2
MAX
MAX
1.05
4.20
28.0
5.55
4.58
600
220
0.8
+1
5.5
5.5
20
37
20
80
43
2
2
5
UNITS
UNITS
kHz
mA
mV
µA
µA
µA
µA
µA
ns
µs
V
V
V
V
V
V
V
V
V