MC34712 Просмотр технического описания (PDF) - Freescale Semiconductor
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MC34712 Datasheet PDF : 24 Pages
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static 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
IC INPUT SUPPLY VOLTAGE (VIN)
Input Supply Voltage Operating Range
Input DC Supply Current(11)
Normal Mode: SD = 1 & STBY = 1, Unloaded Outputs
Input DC Supply Current(11)
Standby Mode, SD = 1 & STBY = 0
Input DC Supply Current(11)
Shutdown Mode, SD = 0 & STBY = X
VIN
3.0
-
6.0
V
IIN
-
-
25
mA
IINQ
-
-
15
mA
IINOFF
-
-
100
µA
INTERNAL SUPPLY VOLTAGE OUTPUT (VDDI)
Internal Supply Voltage Range
BUCK CONVERTER (PVIN, SW, GND, BOOT, INV, COMP)
VDDI
2.35
2.5
2.65
V
High Side MOSFET Drain Voltage Range
Output Voltage Adjustment Range(12)
Output Voltage Accuracy(12),(13),(14)
Line Regulation(12)
Normal Operation, VIN = 3.0 to 6.0 V, IOUT = ±3.0 A
Load Regulation(12)
Normal Operation, IOUT = -3.0 to 3.0 A
Error Amplifier Common Mode Voltage Range(12),(15)
Output Under-voltage Threshold
Output Over-voltage Threshold
Continuous Output Current
Over-current Limit, Sinking and Sourcing
Short-circuit Current Limit
(Sourcing and Sinking)
PVIN
2.5
-
6.0
V
VOUT
0.7
-
1.35
V
-
-1.0
-
1.0
%
REGLN
-1.0
-
1.0
%
REGLD
-1.0
-
1.0
%
VREF
VUVR
VOVR
IOUT
ILIM
0.0
-
1.35
V
-8.0
-
-1.5
%
1.5
-
8.0
%
-3.0
-
3.0
A
-
4.0
-
A
ISHORT
-
6.5
-
A
High Side N-CH Power MOSFET (M3) RDS(ON)(12)
IOUT = 1.0 A, VBOOT - VSW = 3.3 V
Low Side N-CH Power MOSFET (M4) RDS(ON)(12)
IOUT = 1.0 A, VIN = 3.3 V
RDS(ON)HS
10
-
50
mΩ
RDS(ON)LS
10
-
50
mΩ
Notes
11. See section “MODES OF OPERATION”, page 14 has a detailed description of the different operating modes of the 34712
12. Design information only, this parameter is not production tested.
13. ±1% is assured at room temperature.
14. Overall output accuracy is directly affected by the accuracy of the external feedback network, 1% feedback resistors are recommended.
15. The 1% output voltage regulation is only guaranteed for a common mode voltage range greater than or equal to 0.7 V at room
temperature.
Analog Integrated Circuit Device Data
Freescale Semiconductor
34712
7
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