MAX8709B Просмотр технического описания (PDF) - Maxim Integrated
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MAX8709B Datasheet PDF : 24 Pages
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High-Efficiency CCFL Backlight
Controller with SMBus Interface
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. VBATT = 12V, VLOT = VREF, VCC = VDD, VSUS = 5.3V, TA = 0°C to +85°C. Typical values are at TA = +25°C,
unless otherwise noted.)
PARAMETER
LOT Input Voltage Range
LOT Input Bias Current
IFB Input Voltage Range
IFB Regulation Point
IFB Input Bias Current
IFB Lamp-Out Threshold
IFB to CCI Transconductance
CCI Output Impedance
ISEC Input Voltage Range
ISEC Regulation Threshold
ISEC Input Bias Current
VFB Input Voltage Range
VFB Input Bias Current
VFB Regulation Point
VFB to CCV Transconductance
VFB Zero-Voltage Crossing Threshold
CCV Output Impedance
DPWM Chopping Frequency
Lamp-Out Detection Timeout Timer
SDA, SCL, SUS Input Low Voltage
SDA, SCL, SUS Input High Voltage
SDA, SCL, SUS Input Hysteresis
SDA, SCL, SUS Input Bias Current
SDA Output Low Sink Current
SCL Serial Clock High Period
SCL Serial Clock Low Period
START Condition Setup Time
START Condition Hold Time
SDA Valid to SCL Rising-Edge Setup Time,
Slave Clocking-In Data
SCL Falling Edge to SDA Transition
SCL Falling Edge to SDA Valid,
Reading Out Data
CONDITIONS
VIFB = 0.4V
LOT = REF
1V < VCCI < 2.5V
VISEC = 1.25V
VVFB = 0.5V
1V < VCCV < 2.7V
VIFB < 0.1V (Note 1)
VSDA = 0.4V
THIGH
TLOW
tSU:STA
tHD:STA
tSU:DAT
tHD:DAT
TDV
MIN TYP MAX UNITS
0.5
VREF
V
-2
+2
µA
-1.7
+1.7
V
380 400 420
mV
-2
+2
µA
500 600 700
mV
100
µS
20
MΩ
-2
+2
V
1.20 1.25 1.30
V
-2
+2
µA
-2
+2
V
-0.5
+0.5
µA
490 510 530
mV
40
µS
-10
+10
mV
20
MΩ
204 210 216
Hz
1.14 1.22 1.30
s
0.8
V
2.1
V
300
mV
-1
+1
µA
4
mA
4
µs
4.7
µs
4.7
µs
4
µs
250
ns
0
ns
700
ns
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