Datasheet

R
1
V
IN (UVLO,rising)
= 1.225V x
R
2
+1
¹
·
©
§
V
IN(HYS)
=
I
HYS
R
1
UVLO Threshold and Hysteresis www.ti.com
Figure 1. LM34925 Evaluation Board (Top View)
2 UVLO Threshold and Hysteresis
The UVLO resistors are selected using the following two equations:
(1)
and
(2)
On this evaluation board R1 = 127kΩ and R2 = 8.25kΩ, resulting in UVLO rising threshold at VIN = 20.5V
and a hysteresis of 2.54V.
2
AN-2285 LM34925 Isolated Evaluation Board SNVA676A–August 2012–Revised April 2013
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