ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Table 5. Dynamic Electrical Characteristics
Characteristics noted under conditions 2.7V ≤ VIN ≤ 5.5V, -20°C ≤ TA ≤ 85°C, GND = 0V, 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
I2C COMMUNICATION
-
-
$54
-
-
Device Physical Address (7 bit Address)
Maximum I2C Speed
400
kHz
FREQ
Selectable Switching Frequency 1
Selectable Switching Frequency 2
Selectable Switching Frequency Step Size
Switching Frequency Accuracy
Retry Timeout Period(23)
fSW1
fSW2
fSTEP
750
250
-
-
-
2000
kHz
kHz
kHz
%
1000
250
-
-
10
-
-10
-
tTIMEOUT
10
ms
CURRENT LIMIT MONITORING
Over-current Limit Timer(23)
Retry Timeout Period(23)
tLIMIT
-
-
10
10
-
-
ms
ms
tRETRY
OUTPUT OVER-VOLTAGE/UNDER-VOLTAGE MONITORING
Under-voltage Threshold (Response A)
Over-voltage Threshold (Response A)
Under-voltage Threshold (Response B)
Over-voltage Threshold (Response B)
Filter Delay Timer(23)
VUV-R
VOV-R
VUV-R
VOV-R
tFILTER
-
-
-
-
-
-20
20
-
-
-
-
-
%
%
%
%
μs
-20
20
20
RST
RST Reset Delay(23)
tRST-DELAY
-
10
ms
REGULATOR 1 & VG
Operating Frequency(22), (23)
Operating Frequency Selection Step Size
Constant Time Off Value(23)
Low Side Timeout(23)
fSW1
fSTEP
750
-
1500
kHz
kHz
μs
-
-
-
250
1.0
15
-
-
-
tOFF
tTIMEOUT
μs
REGULATOR 2
Operating Frequency(23)
fSW1
750
-
-
2000
-
kHz
kHz
Operating Frequency Selection Step Size
fSTEP
250
Notes
22. When REG1 is used, the maximum fSW1 Frequency programed with external components should be 1500 kHz
23. Guaranteed by design.
34704
Analog Integrated Circuit Device Data
Freescale Semiconductor
14
FREESCALE [ Freescale ]
