Datasheet

1 Ps/DIV
Vout
1V/Div
PGOOD
5V/Div
SS
1V/Div
EN
10V/Div
Vout
40 mV/Div
Iout
500 mA/Div
200 Ps/DIV
EFFICIENCY (%)
1
I
DC
(mA)
10 100 1000 10000
5Vout
3.3Vout
FPWM
mode
50
60
70
80
90
100
EFFICIENCY (%)
1
I
DC
(mA)
10 100 1000 10000
5Vout
3.3Vout
FPWM
mode
50
60
70
80
90
100
V
FB
(V)
SWITCHING FREQUENCY (kHz)
0
50
100
150
200
250
300
350
0.2 0.4 0.6 0.8 1.0 1.2
TEMPERATURE (ºC)
ILIM PEAK (A)
2.0
2.2
2.4
2.6
2.8
3.0
-40 -20 0 20 40 60 80 100 120 140
LM26001, LM26001Q
www.ti.com SNVS430G –MAY 2006–REVISED MAY 2006
Typical Performance Characteristics (continued)
Unless otherwise specified the following conditions apply: Vin = 12V, T
J
= 25°C.
Short Circuit Foldback Frequency vs V
FB
Peak Current Limit vs Temperature (325 kHz nominal)
Figure 8. Figure 9.
Efficiency vs Load Current (330kHz) Efficiency vs Load Current (500kHz)
Figure 10. Figure 11.
Startup Waveforms Load Transient Response
Figure 12. Figure 13.
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