Datasheet
LM3463
SNVS807A –MAY 2012–REVISED MAY 2013
www.ti.com
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
LED Current Regulator
V
GDn-MAX
GDn Gate Driver Maximum Output V
SEn
= 0V 5.30 5.75 6.20 V
Voltage
I
GDn-MAX
GDn Gate Driver Short Circuit Current V
GDn
= 0V 10 16 mA
I
DRn-MAX
DRn pin Maximum Input Current V
DRn
= 80V 35 50 65 µA
V
SEn
Output Current Sensing Reference V
IOUTADJ
= V
VREF
190 200 210 mV
Voltage w.r.t V
REFRTN
V
IOUTADJ
= V
VREF
/ 2 85 100 115 mV
V
IOUTADJ
= V
REFRTN
2.0 4.6 6.5 mV
Fault Detection and Handling
V
SEn-LED-OPEN-FLT
LED Open Fault Detection Voltage Measure at SEn pin 43 mV
Threshold at SEn Pin
I
SEn-LED-OPEN-FLT
LED Open Fault Detection Current Measure at SEn pin 15 22 30 µA
Threshold at SEn Pin
V
DRn-LED-NORMAL
LED Open Fault Detection Voltage Measure at DRn pin 330 mV
Threshold at DRn Pin
I
FCAP-CHG
Fault Cap. Charging Current Fault = True 20 28 40 µA
V
FCAP-FLT-TH
FCAP Pin Fault Confirm Voltage Measure at FCAP pin 3.3 3.6 3.9 V
Threshold
V
FCAP-RST-TH
FCAP Pin Fault Reset Voltage Threshold Measure at FCAP pin 85 157 230 mV
Device Enable
V
EN-ENABLE
EN Pin Voltage Threshold for Device 2.6 3.3 V
Enable
V
EN-DISABLE
EN Pin Voltage Threshold for Device 1.9 2.5 V
Disable
V
EN-HYS
Device Enable Hysteresis 100 mV
Thermal Protection
T
SD
Thermal shutdown temperature T
J
Rising 165 °C
T
SD-HYS
Thermal shutdown temperature hysteresis T
J
Falling 20 °C
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