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34704 Datasheet(PDF) 14 Page - Freescale Semiconductor, Inc

Part # 34704
Description  Multiple Channel DC-DC Power Management IC
PDF  54 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

34704 Datasheet(HTML) 14 Page - Freescale Semiconductor, Inc

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



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