Datasheet

VIN
R1
R2
Node
5.8V
10kohm
ENA
ENA
START ENA
ENA
1
V
R2
V V
V
I
R1 R3
=
-
+ -
START STOP
OUT
HYS
V V
R1
V
I
R3
-
=
+
EN
Ihys
VIN
+
-
TPS54060A
R1
R2
VOUT
R3
I1
0.9 Am
2.9 Am
1.25 V
TPS54060A
SLVSB57B –MARCH 2012–REVISED SEPTEMBER 2013 www.ti.com
DETAILED DESCRIPTION (continued)
Figure 29. Adding Additional Hysteresis
(4)
(5)
Do not place a low-impedance voltage source with greater than 5 V directly on the EN pin. Do not place a
capacitor directly on the EN pin if V
EN
> 5 V when using a voltage divider to adjust the start and stop voltage.
The node voltage, (see Figure 30) must remain equal to or less than 5.8 V. The zener diode can sink up to 100
µA. The EN pin voltage can be greater than 5 V if the V
IN
voltage source has a high impedance and does not
source more than 100 µA into the EN pin.
Figure 30. Node Voltage
16 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated
Product Folder Links: TPS54060A