+
–
0
0
0
0
Feedback
IN- Sense
IN-
IN+
IN+ Sense
T
erm
ination
TLV3601
R6
R1
Figure 6-5. TLV3601 Hysteresis Schematic
The TLV3603 utilizes an extra pin not available on the TLV3601, called LE/HYST. This pin is able to adjust
the internal hysteresis of the device, through the attachment of an external resistor (R7) connecting to VEE. To
understand the relationship between the resistor value of R7 and the amount of hysteresis created, see TLV3603
data sheet.
Alternatively, the pin also functions as an inverting Latch Enable. If the pin is connected to VEE, the device will
hold the output state for as long as the pin remains connected to that voltage. If the pin is connected to VCC,
the device will function normally with no hysteresis. Connections for VCC and VEE are supplied through J9 with
R7 being populated with a 0 Ω resistor. However, if it is necessary to control when the device latches, a pulsing
signal can be applied to SMA connector J6, with SMA connector J7 being the corresponding sense line for that
input.
+
–
VCC or VEE (J9)
LE/HYST Sense (J7)
Hysteresis
TLV3603
R7
LE/HYST (J6)
Figure 6-6. TLV3603 Hysteresis Schematic
Board Setup
10
TLV3601EVM User's Guide
SNOU183 – MAY 2021
Copyright © 2021 Texas Instruments Incorporated