参数资料
| 型号： | MC34703PNB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 7/46页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY QUICC 33-QFN |
| 标准包装： | 1 |
| 应用： | 电源 |
| 电流 - 电源： | 60mA |
| 电源电压： | 2.8 V ~ 13.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 33-PowerQFN |
| 供应商设备封装： | 33-PQFN（10x10） |
| 包装： | 管件 |
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ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
STATIC ELECTRICAL CHARACTERISTICS
Table 3. Static Electrical Characteristics
Characteristics noted under conditions -40°C ≤ T J ≤ 85 ° C unless otherwise noted. Input voltages 2.8 V ≤ V IN ≤ 13.5 V. Typical
values noted reflect the approximate parameter means at T A = 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 , V IN2 )
Start-Up Voltage Threshold (Boost Switching)
V BST Undervoltage Lockout (Internal use only)
Input DC Supply Current (Normal Operation Mode, Enabled) (8)
V IN1 Pin Input Supply Current (EN1 = EN2 = 0) (8)
V IN2 Pin Input Leakage Current (EN1 = EN2 = 0) (8)
Output Voltage (11)
Output DC Current (10) (11)
V IN
V ST
V BSTUVLO
I IN
I IN1
I IN2
V OUT
I OUT
2.8
–
5.5
–
–
–
10% V IN
0.1
–
1.6
6.0
60
13
100
–
–
13.5
1.8
6.5
–
–
–
5.0
12
V
V
V
mA
mA
μ A
V
A
BUCK CONVERTER (INV, VOUT)
Buck Converter Feedback Voltage
I VOUT = 100 mA to 10 A, V IN1 = V IN2 = 2.8 V to 13.5 V.
V INV
V
No R B Resistor. Includes Load Regulation Error
0.784
0.8
0.816
Buck Converter Voltage Margining Step
(12)
Buck Converter Line Regulation
V IN1 = V IN2 = 2.8 V to 13.5 V, I VOUT = 10 A
V MVO
REG LNVO
–
-1.0
1.0
–
–
1.0
%
%
Buck Converter Load Regulation (12)
REG LDVO
%
I VOUT = 100 mA to 10 A
V OUT Input Leakage Current
V OUT = 5.0 V
High-Side Power MOSFET Q1 R DS(ON) (10)
I D = 1.0 A, T A = 25°C, V BST = 8.0 V
Low-Side Power MOSFET Q2 R DS(ON) (10)
I D = 1.0 A, T A = 25°C, V BST = 8.0 V
I VOUTLK
R DS(ON)
R DS(ON)
-2.0
1.7
–
–
–
4.6
–
–
2.0
7.5
25
10
mA
m ?
m ?
Buck Converter Peak Current Limit (High Level)
Buck Converter Valley Current Limit (Low Level)
I HLIM
I LLIM
12
6.0
15
7.5
19
9.0
A
A
V OUT Internal Pull-Down MOSFET Current Limit
I Q3LIM
A
T A = 25°C, V BST = 8.0 V
V OUT Internal Pull-Down MOSFET R DS(ON)
I D = 1.0 A, T A = 25°C, V BST = 8.0 V
Q3 R DS(ON)
0.75
–
1.7
–
2.0
3.0
?
Thermal Shutdown (12)
T SD
150
170
190
°C
Thermal Shutdown Hysteresis
(12)
T SDHys
–
15
–
°C
Notes
8. Not production tested; typical values for reference only.
9. V DDI is an internal supply voltage. It should not be used for any external purpose.
10.
11.
12.
Design information only; not production tested.
Minimum output voltage can be adjusted to 0.8 V when V IN < 8 V. Maximum currents subject to sufficient heat-sinking.
Guaranteed by design.
34703
Analog Integrated Circuit Device Data
Freescale Semiconductor
7
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