ELECTRICAL CHARACTERISTICS
ELECTRICAL PERFORMANCE CURVES
Table 4. Dynamic Electrical Characteristics (continued)
Characteristics noted under conditions 3.0 V ? V IN ? 6.0 V, - 40 ? C ? T A ? 85 ? C, GND = 0 V, unless otherwise noted. Typical
values noted reflect the approximate parameter means at T A = 25°C under nominal conditions, unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
CONTROL AND SUPERVISORY (STBY, SD, PG)
PG Reset Delay
t PGRESET
8.0
-
12
ms
Thermal Shutdown Retry Timeout Period
Minimum OFF Time
Minimum ON Time
(24)
t TIMEOUT
t OFFMIN
t ONMIN
80
-
-
-
150
100
120
-
-
ms
ns
ns
Notes
24. Design information only, this parameter is not production tested.
ELECTRICAL PERFORMANCE CURVES
100%
95%
VDDQ (VOUT1)
% Efficiency vs IOUT
100%
95%
VTT (VOUT2)
% Efficien cy vs IOUT
90%
85%
80%
75%
70%
65%
60%
55%
VIN = 5V
Fs = 1MHz
TA=25°C
90%
85%
80%
75%
70%
65%
60%
55%
VIN = 5V
Fs = 1MHz
TA=25°C
50%
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
50%
0
0.5
1
1.5
2
2.5
3
IOUT, Amps
Figure 4. % Efficiency vs. I OUT
IOUT, Amps
Figure 5. % Efficiency vs. I OUT
34716
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
11
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