MAX1739EEP+ Maxim Integrated Products, MAX1739EEP+ Datasheet - Page 3

• Manufacturer Part Number: MAX1739EEP+
• Description: Display Drivers Wide Brightness Rang e CCFL Backlight Con
• Manufacturer: Maxim Integrated Products

Specifications of MAX1739EEP+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRICAL CHARACTERISTICS (continued)
(V+ = 8.2V, V
DAC AND ERROR AMPLIFIER
DAC Resolution
MINDAC Input Voltage Range
MINDAC Input Bias Current
MINDAC Digital PWM Disable
Threshold
CSAV Input Voltage Range
CSAV Regulation Point
CSAV Input Bias Current
CSAV to CCI Transconductance
CTFB Input Voltage Range
CTFB Input Bias Current
CTFB Regulation Point
CTFB to CCV Transconductance
TIMERS AND FAULT DETECTION
Chopping Oscillator Frequency
Digital PWM Chop-Mode Frequency
MODE to DPWM Sync Ratio
Lamp-Out Detection Timeout Timer
(Center-Tap Voltage Stuck at
Maximum) (Note 1)
CSAV Lamp-Out Threshold
Fault-Detection Threshold on CCV
Shorted Buck-Switch Detection
Timeout Timer (UL1950 Protection)
(Note 3)
Lamp Turn-On Delay
MODE Operating Voltage Range
MODE = GND Threshold
(min Brightness = 0)
MODE = REF Threshold
(max Brightness = 0)
MODE = V L Threshold
(MAX1739 SMB Interface Mode)
MODE AC Signal Amplitude
MODE AC Signal Synchronization
Range
SH
PARAMETER
/SUS = V
_______________________________________________________________________________________
SH
= 5.5V, MINDAC = GND, T
Guaranteed monotonic
0 < V
MINDAC = VL
V
V
V
1V < V
1V < V
No AC signal on MODE, not synchronized
No AC signal on MODE
32kHz AC signal on MODE
100kHz AC signal on MODE
F
V
lamp-out
threshold
(Note 2)
V
detection
threshold on CCV
After SH/SUS or SH forces device on or SH rises
To sync DPWM oscillator, not in shutdown
(Note 4)
To sync DPWM oscillator, not in shutdown
(Note 4)
To sync DPWM oscillator, not in shutdown
(Note 4)
Peak to peak (Note 5)
Chopping oscillator synchronized to MODE AC
signal
MODE
MINDAC
MINDAC
MINDAC
CSAV
CCV
MINDAC
< fault-
CCI
CCV
< CSAV
/ F
= 0, DAC code = 11111 binary
= 0, DAC code = 00001 binary
= 1V, DAC code = 00000 binary
DPWM
< 2.7V
< 2.7V
A
< 2V
= 0°C to +85°C, unless otherwise noted. Typical values are at T
CCFL Backlight Controllers
CONDITIONS
No AC signal on MODE
32kHz AC signal on MODE
100kHz AC signal on MODE
No AC signal on MODE
32kHz AC signal on MODE
100kHz AC signal on MODE
Wide Brightness Range
VL - 0.6
MIN
2.06
-5.5
188
570
205
332
2.4
0.4
1.4
93
30
24
50
32
-1
-1
-1
5
0
0
2
0
2
TYP
6.25
2.33
2.05
0.66
194
100
100
600
220
250
781
128
291
256
2.9
40
28
75
82
4
MAX
2.73
200
110
630
235
100
259
100
0.8
0.6
2.6
16
50
32
11
2
1
4
1
2
1
1
A
= +25°C.)
UNITS
μmho
μmho
kHz
kHz
Bits
mV
mV
mV
ms
ms
μA
μA
μA
Hz
V
V
V
V
V
V
V
V
V
V
s
3