參數(shù)資料
型號(hào)： MAX748CWE
廠商： Maxim Integrated Products, Inc.
英文描述： Current-Mode SMPS Controller
中文描述： 電流模式開關(guān)電源控制器
文件頁數(shù)： 3/12頁
文件大?。?/td> 231K
代理商： MAX748CWE
M
8th-Order, Lowpass, Elliptic ,
S witc hed-Capac itor Filters
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS—MAX7400/MAX7403 (continued)
(V
DD
= +5V, filter output measured at OUT, 10k
||50pF load to GND at OUT,
SHDN
= V
DD
, OS = COM, 0.1μF from COM to GND,
f
CLK
= 100kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
ELECTRICAL CHARACTERISTICS—MAX7404/MAX7407
(V
DD
= +3V, filter output measured at OUT, 10k
||50pF load to GND at OUT,
SHDN
= V
DD
, OS = COM, 0.1μF from COM to GND,
f
CLK
= 100kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
SHUTDOWN
SHDN
Input High
SHDN
Input Low
POWER REQUIREMENTS
Supply Voltage
Supply Current
SHDN
Input Leakage Current
±0.1
±10
μA
V
SHDN
= 0 to V
DD
V
SDL
0.5
V
V
V
SDH
V
DD
- 0.5
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Power-Supply Rejection Ratio
PSRR
60
dB
Shutdown Current
I
SHDN
0.2
1
μA
V
DD
I
DD
4.5
5.5
3.5
V
2
mA
CONDITIONS
Measured at DC
SHDN
= GND, CLK driven from 0 to V
DD
Operating mode, no load, IN = OS = COM
FILTER CHARACTERISTICS
Corner Frequency
Clock-to-Corner Ratio
Total Harmonic Distortion
plus Noise
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
DC Insertion Gain with Output
Offset Removed
-0.1
0.1
0.3
dB
Output Offset Voltage
V
OFFSET
±5
±25
mV
Output Voltage Range
0.25
V
DD
- 0.25
V
Clock-to-Corner Tempco
10
ppm/°C
THD+N
-77
1
dB
MAX7407
MAX7404
-79
OS Voltage Gain to OUT
Input Voltage Range at OS
A
OS
V
OS
V/V
V
V
COM
±0.1
f
C
0.001 to 10
100:1
kHz
f
CLK
/f
C
V
DD
/ 2
- 0.1
V
DD
/ 2
V
DD
/ 2
+ 0.1
V
COM Voltage Range
V
COM
Input Resistance at COM
Clock Feedthrough
Resistive Output Load Drive
R
COM
75
125
10
1
k
mVp-p
k
R
L
10
Maximum Capacitive Load
at OUT
C
L
50
500
pF
Input Leakage Current at COM
Input Leakage Current at OS
±0.1
±0.1
±10
±10
μA
μA
CONDITIONS
COM internally biased or externally driven
V
COM
= V
DD
/ 2 (Note 2)
V
IN
= V
COM
= V
DD
/ 2
f
IN
= 200Hz, V
IN
= 2.5Vp-p,
measurement bandwidth = 22kHz
SHDN
= GND, V
COM
= 0 to V
DD
V
OS
= 0 to (V
DD
- 1V) (Note 3)
(Note 1)
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