Datasheet

4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
100
110
120
130
140
150
160
170
180
190
200
SWITCH R
DS(ON)
(m:
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
LOAD CURRENT (A)
0
10
20
30
40
50
60
70
80
90
100
V
IN
= 5V
V
IN
= 12V
V
IN
= 18V
EFFICIENCY (%)
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
100
110
120
130
140
150
160
170
180
190
200
SWITCH R
DS(ON)
(m:
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
290
295
300
305
310
315
320
R
F
= 46.4k
SWITCHING FREQUENCY (kHz)
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
0
1
2
3
4
5
6
7
8
9
QUIESCENT CURRENT (mA)
4 6 8 10 12 14 16 18 20
INPUT VOLTAGE (V)
QUIESCENT CURRENT (PA)
0
2
4
6
8
10
12
14
16
LM2717
SNVS253D –MAY 2005–REVISED MARCH 2013 www.ti.com
Typical Performance Characteristics
Switching I
Q
Shutdown I
Q
vs.
vs. Input Voltage
Input Voltage (F
SW
= 300kHz)
Figure 2. Figure 3.
Switching Frequency
vs. Fixed Buck R
DS(ON)
Input Voltage vs.
(F
SW
= 300kHz) Input Voltage
Figure 4. Figure 5.
Adjustable Buck R
DS(ON)
Fixed Buck Efficiency
vs. vs.
Input Voltage Load Current
Figure 6. Figure 7.
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