ELECTRICAL PERFORMANCE CURVES
ELECTRICAL PERFORMANCE CURVES
300
300
3.00
2.80
2.60
2.40
2.20
2.00
295
295
290
290
285
285
280
280
-50
0
50
100
-50
-50
0
50
50
100
100
0
Temperature (°C)
Temperature (°C)
Temperature (°C)
Temperature (C°)
Figure 5. fOSC vs. Temperature
Figure 8. Switcher ILim vs. Temperature
450
0.83
0.82
0.81
0.80
0.79
0.78
0.77
400
350
300
250
200
150
100
-50
0
50
100
TTeemmppeerraattuurree(C(°°C))
7
12
17
22
Rf (k Ohm )
Rf (k Ω)
Figure 6. fOSC vs. Rf
Figure 9. VREF vs. Temperature
25
23
21
19
17
15
13
11
9
100
90
80
70
60
50
40
30
20
10
Vin=3.3V, Vout=1.2V
Vin=3.3V, Vout=1.8V
Vin=5.0V, Vout=1.2V
Vin=5.0V, Vout=1.8V
7
5
0
0
0,5
1
1,5
0
100
200
300
Load Current [A]
Figure 7. Switcher Efficiency vs. Load Current
RT (k Ω) with CT = 33 nF
RT (kOhm) with CT = 33nF
Figure 10. Timer (ms) vs. RT
34701
Analog Integrated Circuit Device Data
Freescale Semiconductor
14
FREESCALE [ Freescale ]
