Datasheet

LM3463
www.ti.com SNVS807A –MAY 2012–REVISED MAY 2013
Electrical Characteristics (continued)
Specification with standard type are for T
A
= T
J
= +25°C only; limits in boldface type apply over the full Operating Junction
Temperature (T
J
) range. Minimum and Maximum are specified through test, design or statistical correlation. Typical values
represent the most likely parametric norm at T
J
= +25°C, and are provided for reference purposes only. Unless otherwise
stated, the following conditions apply: V
IN
= 48V.
Symbol Parameter Conditions Min Typ Max Units
Dimming Control Interfaces
Analog Mode
V
DIMn-MAX
DIMn Voltage at 100% Output Duty Cycle MODE = VCC 5.65 V
V
DIMn-MIN
DIMn Voltage at 0% Output Duty Cycle MODE = VCC 807 mV
V
DIMn-001H
DIMn Voltage at data code = 001h MODE = VCC 826 mV
PWM Mode
V
DIM-LED-ON
DIMn Voltage Threshold at LED ON MODE = GND 1.50 1.75 V
V
DIM-LED-OFF
DIMn Voltage Threshold at LED OFF 1.1 1.4 V
V
DIM-LED-HYS
DIMn Voltage Hysteresis at LED ON to 100 mV
OFF
System Clock Generator
V
FS
FS Pin Voltage FS Pin = Open 1.173 1.235 1.297 V
I
FS-SC
FS Pin Short-Circuit Current V
FS
= 0V 110 140 µA
f
OSC
System Clock Frequency R
FS
= 14 kΩ 0.90 1.00 1.15 MHz
Bus Interface Mode
V
SCLK-HIGH (DIM23)
SCLK (Serial CLK) Logic High Threshold MODE = Hi-Z 1.50 1.75 V
V
SCLK-LOW (DIM23)
SCLK (Serial CLK) Logic Low Threshold MODE = Hi-Z 1.1 1.4 V
V
SCLK-HYS (DIM23)
SCLK (Serial CLK) Hysteresis MODE = Hi-Z 100 mV
V
SDA-HIGH (DIM01)
SDA (Serial Data) Logic High Threshold MODE = Hi-Z 1.50 1.75 V
V
SDA-LOW (DIM01)
SDA (Serial Data) Logic Low Threshold MODE = Hi-Z 1.1 1.4 V
V
SDA-HYS (DIM01)
SDA (Serial Data) Hysteresis MODE = Hi-Z 100 mV
Dynamic headroom Control
V
DRn-DHC-STDEAY
The lowest VDRn when DHC is under Measure at DRn pin 0.95 V
steady state
V
VLedFB-TH
VLedFB Voltage Threshold for Turning V
VLedFB
Increasing 2.325 2.500 2.625 V
LEDs ON
V
VLedFB-HYS
VLedFB Voltage Hysteresis V
VLedFB
decreasing 1.21 V
V
VLedFBEN-SLAVE
VLedFB Pin Voltage Threshold for Slave Measure at VLedFB pin 5.15 5.39 5.60 V
Mode
V
OutP-MAX
OutP Max. Output Voltage I
OutP
= 1mA 2.90 3.10 3.25 V
Current Sink
V
CDHC
= 0.5V
V
OutP-MIN
OutP Min. Output Voltage I
OutP
=1mA 0.050 0.120 0.235 V
Current Sink
V
CDHC
= 3.5V
V
ISR
ISR Pin Voltage I
ISR
= 1µA 1.226 1.307 1.382 V
Current Sink to GND
I
ISR
= 10µA 1.195 1.240 1.285 V
Current Sink to GND
I
ISR
= 100µA 1.075 1.125 1.175 V
Current Sink to GND
I
CDHC-SOURCE
CDHC Pin Max. Sourcing Current Any V
DRn
< 0.9V 15 26 35 µA
I
CDHC-SINK
CDHC Pin Max. Sinking Current Any V
DRn
> 0.9V 20 33 45 µA
R
CDHC-SOURCE
CDHC Pin Output Impedance Sourcing current from CDHC pin 1.20 1.70 2.25 MΩ
R
CDHC-SINK
CDHC Pin Output Impedance Sinking current from CDHC pin 0.7 1.1 1.4 MΩ
gm
CDHC-OTA
CDHC Pin OTA Transconductance V
DRn
≥ 0.9V 75 µmho
V
DRn
< 0.9V 17 µmho
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