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MC34703PNB bảng dữ liệu(PDF) 7 Page - Freescale Semiconductor, Inc

tên linh kiện MC34703PNB
Giải thích chi tiết về linh kiện  10A Switch-Mode Power Supply with LDO Regulator
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MC34703PNB bảng dữ liệu(HTML) 7 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
7
34703
ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions -40°C TJ 85°C unless otherwise noted. Input voltages 2.8 V VIN 13.5 V. Typical
values noted reflect the approximate parameter means at TA = 25°C under nominal conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GENERAL (VIN1, VIN2, VBST, VDDI) (9)
Operating Voltage Range (V
IN1, VIN2)
VIN
2.8
13.5
V
Start-Up Voltage Threshold (Boost Switching)
VST
1.6
1.8
V
VBST Undervoltage Lockout (Internal use only)
VBSTUVLO
5.5
6.0
6.5
V
Input DC Supply Current (Normal Operation Mode, Enabled) (8)
IIN
60
mA
VIN1 Pin Input Supply Current (EN1 = EN2 = 0)
(8)
IIN1
13
mA
VIN2 Pin Input Leakage Current (EN1 = EN2 = 0)
(8)
IIN2
100
µA
Output Voltage (11)
VOUT
10% VIN
5.0
V
Output DC Current (10) (11)
IOUT
0.1
12
A
BUCK CONVERTER (INV, VOUT)
Buck Converter Feedback Voltage
IVOUT = 100 mA to 10 A, VIN1 = VIN2 = 2.8 V to 13.5 V.
No RB Resistor. Includes Load Regulation Error
VINV
0.784
0.8
0.816
V
Buck Converter Voltage Margining Step
VMVO
1.0
%
Buck Converter Line Regulation (12)
VIN1 = VIN2 = 2.8 V to 13.5 V, IVOUT = 10 A
REGLNVO
-1.0
1.0
%
Buck Converter Load Regulation (12)
IVOUT = 100 mA to 10 A
REGLDVO
-2.0
2.0
%
VOUT Input Leakage Current
VOUT = 5.0 V
IVOUTLK
1.7
4.6
7.5
mA
High-Side Power MOSFET Q1 RDS(ON)
(10)
ID = 1.0 A, TA = 25°C, VBST = 8.0 V
RDS(ON)
25
m
Low-Side Power MOSFET Q2 RDS(ON)
(10)
ID = 1.0 A, TA = 25°C, VBST = 8.0 V
RDS(ON)
10
m
Buck Converter Peak Current Limit (High Level)
IHLIM
12
15
19
A
Buck Converter Valley Current Limit (Low Level)
ILLIM
6.0
7.5
9.0
A
VOUT Internal Pull-Down MOSFET Current Limit
TA = 25°C, VBST = 8.0 V
IQ3LIM
0.75
1.7
2.0
A
VOUT Internal Pull-Down MOSFET RDS(ON)
ID = 1.0 A, TA = 25°C, VBST = 8.0 V
Q3RDS(ON)
3.0
Thermal Shutdown (12)
TSD
150
170
190
°C
Thermal Shutdown Hysteresis (12)
TSDHys
15
°C
Notes
8.
Not production tested; typical values for reference only.
9.
VDDI is an internal supply voltage. It should not be used for any external purpose.
10.
Design information only; not production tested.
11.
Minimum output voltage can be adjusted to 0.8 V when VIN < 8 V. Maximum currents subject to sufficient heat-sinking.
12.
Guaranteed by design.


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