Datasheet

ON-TIME (ns)
100
1000
10000
0
20
INPUT VOLTAGE V
IN
(V)
4230
10
R
ON
= 300k
200k
100k
0 0.5 1 1.5 2 2.5
0
2
4
6
8
10
12
14
16
18
20
V
FB
(V)
T
OFF
(Ps)
600k
400k
200k
100k
50k
0 100 200 300 400 500
70
80
90
100
EFFICIENCY (%)
LOAD CURRENT (mA)
V
IN
= 15V
30V
42V
LM25007
SNVS401C –JANUARY 2006–REVISED FEBRUARY 2013 www.ti.com
Typical Performance Characteristics
Operational Waveforms Operational Waveforms
LM25007 Operation: V
OUT
= 10V, V
IN
= 20V, I
OUT
= 250mA
LM25007 Operation: V
OUT
= 10V, V
IN
= 42V, I
OUT
= 250mA
CH1: Switch Node, CH2: V
OUT
(AC), CH4: Inductor Current
CH1: Switch Node, CH2: V
OUT
(AC), CH4: Inductor Current
Figure 1. Figure 2.
Current Limit Off-Time
LM25007 10V Output Efficiency vs V
FB
Figure 3. Figure 4.
V
IN
vs T
ON
R
ON
= 100k, 200k, 300k
Figure 5.
6 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LM25007