MC34704 FREESCALE [Freescale Semiconductor, Inc], MC34704 Datasheet - Page 14

• Manufacturer Part Number: MC34704
• Description: Multiple Channel DC-DC Power Management IC
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Table 5. Dynamic Electrical Characteristics
values noted reflect the approximate parameter means at T
14
FREQ
CURRENT LIMIT MONITORING
OUTPUT OVER-VOLTAGE/UNDER-VOLTAGE MONITORING
REGULATOR 1 & VG
REGULATOR 2
Notes
34704
ELECTRICAL CHARACTERISTICS
DYNAMIC ELECTRICAL CHARACTERISTICS
Selectable Switching Frequency 1
Selectable Switching Frequency 2
Selectable Switching Frequency Step Size
Switching Frequency Accuracy
Retry Timeout Period
Over-current Limit Timer
Retry Timeout Period
Under-voltage Threshold (Response A)
Over-voltage Threshold (Response A)
Under-voltage Threshold (Response B)
Over-voltage Threshold (Response B)
Filter Delay Timer
RST
RST Reset Delay
Li-Ion Battery Operating Frequency
Operating Frequency Selection Step Size
Constant Time Off Value
Low Side Time Out
Li-Ion Battery Operating Frequency
Operating Frequency Selection Step Size
15.
16.
Characteristics noted under conditions 2.7V
When REG1 is used, the maximum F
Guaranteed by design.
(16)
(16)
(16)
(16)
(16)
(16)
(16)
Characteristic
(15),
(16)
(16)
DYNAMIC ELECTRICAL CHARACTERISTICS
SW1
Frequency programed with external components should be 1500KHz
V
IN
5.5V, -20 C
A
= 25°C under nominal conditions, unless otherwise noted.
T
A
t
RST-DELAY
t
t
Symbol
TIMEOUT
TIMEOUT
t
t
F
V
V
F
F
V
V
85 C, GND = 0V, unless otherwise noted. Typical
RETRY
FILTER
F
F
t
F
F
LIMIT
t
STEP
STEP
STEP
UV-R
OV-R
UV-R
OV-R
OFF
SW1
SW2
SW1
SW1
Min
750
250
750
750
-10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Analog Integrated Circuit Device Data
Typ
250
250
250
-20
-20
1.0
10
10
10
20
20
20
10
15
-
-
-
-
-
Freescale Semiconductor
2000
1000
1500
2000
Max
10
-
-
-
-
-
-
-
-
-
-
-
-
-
Unit
kHz
kHz
kHz
kHz
kHz
kHz
kHz
ms
ms
ms
ms
%
%
%
%
%
s
s
s