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| 型号： | MC33701 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 英文描述： | 1.5 A Switch-Mode Power Supply with Linear Regulator(1.5 A开关方式电源，带线性稳压器) |
| 中文描述： | 1.5开关模式电源，线性稳压器（1.5 A的开关方式电源，带线性稳压器） |
| 文件页数： | 6/24页 |
| 文件大小： | 841K |
| 代理商： | MC33701 |
33701
6
Go to: www.freescale.com
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions -40°C
≤
T
J
≤
125
°
C unless otherwise noted. Input voltages V
IN1
= V
IN2
= 3.3 V using the typical
application circuit (see
Figure 20
) unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GENERAL
Operating Voltage Range (V
IN1
, V
IN2
)
V
IN
2.8
–
6.0
V
Start-Up Voltage Threshold (Boost Switching)
V
ST
–
1.6
1.8
V
V
BST
Undervoltage Lockout
V
BST_UVLO
–
6.0
–
V
Input DC Supply Current (Normal Operation Mode, Enabled)
I
IN
–
60
–
mA
V
IN1
Pin Input Supply Current (EN1 = EN2 = 0)
I
IN1
–
9.0
–
mA
V
IN2
Pin Input Leakage Current (EN1 = EN2 = 0)
I
IN2
–
TBD
–
μ
A
V
DDI
Internal Supply Voltage
V
DDI
3.0
–
3.3
V
V
DDI
Maximum Output Current
I
DDI
–
TBD
–
μ
A
BUCK CONVERTER
Buck Converter Output Voltage Range
I
VOUT
= 15 mA to 1.5 A, V
IN1
= V
IN2
= 2.8 V to 6.0 V
V
OUT
0.8
–
5.0
V
Buck Converter Feedback Voltage
I
VOUT
= 15 mA to 1.5 A, V
IN1
= V
IN2
= 2.8 V to 6.0 V. No R
B
Resistor.
Includes Load Regulation Error
V
INV
0.784
0.8
0.816
V
Buck Converter Voltage Margining Step
V
MVO
–
1.0
–
%
Buck Converter Line Regulation
V
IN1
= V
IN2
= 2.8 V to 6.0 V, I
VOUT
= 1.5 A
REG
LNVO
-1.0
–
1.0
%
Buck Converter Load Regulation
I
VOUT
= 15 mA to 1.5 A
REG
LDVO
-1.0
–
1.0
%
V
OUT
Input Leakage Current
V
OUT
= 5.0 V
I
VOUTLK
–
TBD
–
μ
A
High-Side Power MOSFET Q1 R
DS(ON)
I
D
= 1.0 A, T
A
= 25°C, V
BST
= 8.0 V
R
DS(ON)
–
–
50
m
Low-Side Power MOSFET Q2 R
DS(ON)
I
D
= 1.0 A, T
A
= 25°C, V
BST
= 8.0 V
R
DS(ON)
–
–
50
m
Buck Converter Peak Current Limit (High Level)
I
H_LIM
1.65
2.25
3.0
A
Buck Converter Valley Current Limit (Low Level)
I
L_LIM
0.825
1.125
1.45
A
V
OUT
Pull-Down MOSFET Q3 Current Limit
T
A
= 25°C, V
BST
= 8.0 V
I
Q3_LIM
–
2.0
–
A
V
OUT
Pull-Down MOSFET Q3 R
DS(ON)
I
D
= 1.0 A, T
A
= 25°C, V
BST
= 8.0 V
R
DS(ON)
–
–
1.0
Thermal Shutdown (Switcher, V
OUT
FET)
T
SD
150
170
190
°C
Thermal Shutdown Hysteresis
T
SDHys
–
15
–
°C
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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