SNOSCS3A – SEPTEMBER 2013 – REVISED OCTOBER 2013
TYPICAL APPLICATION
6.5V to 40V
C1
R
EXT B
C
V+/EXT E
EXT B
CFA
CF
CFB
LED
V+/EXT E
SENSE1+
SENSE2+
SWDRV
+
SENSE-
-
R
SENSE
CBY
TEMP+
NTC
GND
CBY
INA
LMP91300
INB
Load
3 Wire NPN
Figure 2. 3-Wire NPN Configuration
6.5V to 40V
R
EXT B
C1
R1
C
V+/EXT E
EXT B
R
SENSE
+
-
CFA
CF
CFB
INA
INB
LED
Load
V+/EXT E
SWDRV
LMP91300 SENSE1+
SENSE2+
CBY
GND
SENSE-
CBY
3 Wire PNP
TEMP+
NTC
Figure 3. 3-Wire PNP Configuration
For operation above 40V a series resistance must be added to SENSE1+ and SENSE2+. The mismatch in these
resistors will affect the overload protection accuracy for the PNP configuration. These resistors must be chosen
so that the SENSE1+ and SENSE2+ pins do not operate above 40V.
2
Product Folder Links:
Copyright © 2013, Texas Instruments Incorporated
TI [ TEXAS INSTRUMENTS ]
