ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 4. Dynamic Electrical Characteristics
Characteristics noted under conditions 3.0 V ≤ VIN ≤ 6.0 V, -40°C ≤ TA ≤ 85°C, GND = 0 V unless otherwise noted. Typical
values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
BUCK CONVERTER (PVIN, SW, PGND, BOOT)
Switching Node (SW) Rise Time (16)
(PVIN = 3.3 V, IOUT = 5.0 A)
tRISE
-
-
14
20
-
-
ns
ns
Switching Node (SW) Fall Time (16)
(PVIN = 3.3 V, IOUT = 5.0 A)
tFALL
Soft Start Duration (Normal Mode)
ILIM= 1.25 - 1.49 V
1.50 - 1.81 V
-
-
-
-
3.2
1.6
0.8
0.4
-
-
-
-
t
ms
SS
1.82 - 2.13 V
2.14 - 2.50 V
Over Current Limit Timer
t
-
10
-
-
ms
ms
µs
LIM
Over Current Limit Retry Time-out Period
Output Undervoltage/Overvoltage Filter Delay Timer
OSCILLATOR (FREQ)
t
80
5.0
120
25
TIMEOUT
t
-
FILTER
Oscillator Default Switching Frequency
f
f
-
1.0
-
-
MHz
KHz
SW
SW
Oscillator Frequency tolerance is ±10% (FREQ = GND)
Oscillator Switching Frequency Range
200
1000
CONTROL AND SUPERVISORY (SD, PG)
PG Reset Delay
t
8.0
80
-
-
12
ms
ms
PGRESET
Thermal Shutdown Retry Time-out Period (16)
t
120
TIMEOUT
Notes
16. Design information only, this parameter is not production tested.
34713
Analog Integrated Circuit Device Data
Freescale Semiconductor
8
FREESCALE [ Freescale ]
