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参数资料
| 型号： | MC33998 |
| 厂商： | 飞思卡尔半导体(中国)有限公司 |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | Switching Power Supply with Linear Regulators(带线性稳压器的开关电源) |
| 中文描述： | 开关电源与线性稳压器（带线性稳压器的开关电源） |
| 文件页数： | 6/20页 |
| 文件大小： | 437K |
| 代理商： | MC33998 |
33998
6
Go to: www.freescale.com
STATIC ELECTRICAL CHARACTERISTICS
Characteristics noted under conditions 9.0 V
≤
V
PWR
≤
16 V, -40
°
C
≤
T
J
= T
A
≤
125
°
C, using the typical application circuit (see
Figure 8
) unless otherwise noted. Typical values noted reflect the approximate parameter mean at T
A
= 25
°
C under nominal
conditions unless otherwise noted.
Characteristic
Symbol
Min
Typ
Max
Unit
GENERAL
Supply Voltage Range
Normal Operating Voltage Range (Note 9)
Extended Operating Voltage Range (Note 9)
V
PWR(N)
V
PWR(E)
6.0
18
–
–
18
26.5
V
Maximum Transient Voltage - Load Dump (Note 10)
V
PWR(LD)
–
–
40
V
V
PWR
Supply Current
EN = 5.0 V, V
PWR
= 14 V, No Loads
I
VPWR
25
–
150
mA
V
PWR
Quiescent Supply Current
EN = 0 V, V
PWR
= 12 V
I
Q_VPWR
5.0
–
15
μ
A
KA_V
PWR
Supply Current,
EN = 5.0 V, KA_V
PWR
= 14 V, No Load on V
KAM
I
KAVPWR
0.5
–
3.0
mA
KA_V
PWR
Quiescent Supply Current
EN = 0 V, KA_V
PWR
= 12 V
I
Q_KAVPWR
50
–
350
μ
A
BUCK REGULATOR V
DDH
Buck Converter Output Voltage
I
VDDH
= 200 mA to 1.4 A, V
PWR
= KA_V
PWR
= 14 V
V
DDH
4.9
–
5.1
V
Buck Converter Output Voltage
I
VDDH
= 1.4 A, V
PWR
= KA_V
PWR
= 6.0 V
V
DDH
4.9
–
5.1
V
V
DDH
Line Regulation
V
PWR
= KA_V
PWR
= 10 V to 14 V, I
VDDH
= 200 mA
RegLn
VDDH
-20
–
30
mV
V
DDH
Load Regulation
V
PWR
= KA_V
PWR
= 14 V, I
VDDH
= 200 mA to 1.4 A
V
PWR
= KA_V
PWR
= 6.0 V, I
VDDH
= 200 mA to 1.4 A
RegLd
VDDH
-20
-20
–
–
20
20
mV
V
DDH
Active Discharge Resistance
V
PWR
= KA_V
PWR
= 14 V, EN = 0 V, I
VDDH
= 10 mA
R
HDisch
1.0
–
15
P-CHANNEL MOSFET
Drain-Source Breakdown Voltage—Not Tested (Note 11)
BV
DSS
45
–
–
V
Drain-Source Current Limit—Not Tested (Note 11)
Isc
SW1
–
-7.0
–
A
Notes
9.
V
DDH
is fully functional when the 33998 is operating at higher battery voltages, but these parameters are not tested. The test condition as are:
a) V
DDH
must be between 4.9 V and 5.1 V (200 mA to 1.4 A) for V
PWR
= 14 V to 18 V.
b) V
DDH
must be between 4.8 V and 5.5 V (200 mA to 1.4 A) for V
PWR
= 18 V to 26.5 V.
Part can survive, but no parameters are guaranteed.
Guaranteed by design but not production tested.
10.
11.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
n
.
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