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ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
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
BUCK CONVERTER (PVIN, SW, GND, BOOT)
Switching Node (SW) Rise Time (19)
(P VIN = 3.3 V, I OUT = ±3.0 A)
Switching Node (SW) Fall Time (19)
(P VIN = 3.3 V, I OUT = ±3.0 A)
Minimum OFF Time
Minimum ON Time
Soft Start Duration
(Normal Mode)
Over-current Limit Timer
Over-current Limit Retry Timeout Period
Output Under-voltage/Over-voltage Filter Delay Timer
t RISE
t FALL
t OFFMIN
t ONMIN
t SS
t LIM
t TIMEOUT
t FILTER
-
-
-
-
1.3
-
80
5.0
14
20
150
180
-
10
-
-
-
-
-
-
2.6
-
120
25
ns
ns
ns
ns
ms
ms
ms
μs
OSCILLATOR (FREQ)
Oscillator Default Switching Frequency (18)
(FREQ = GND)
Oscillator Switching Frequency Range
F SW
F SW
-
200
1.0
-
-
1000
MHz
kHz
CONTROL AND SUPERVISORY (STBY, SD, PG)
PG Reset Delay
Thermal Shutdown Retry Time-out Period (19)
t PGRESET
t TIMEOUT
8.0
80
-
-
12
120
ms
ms
Notes
18. Oscillator Frequency tolerance is ±10%.
19. Design information only, this parameter is not production tested.
34712
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
9
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