參數(shù)資料
型號(hào): MAX651
廠商: Maxim Integrated Products, Inc.
英文描述: 3.3V or Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Controllers(3.3V/可調(diào),高效率,低IQ值,步降DC-DC控制器)
中文描述: 5V/3.3V/3V或可調(diào)、高效率、低IQ、降壓型DC-DC控制器
文件頁數(shù): 3/16頁
文件大?。?/td> 172K
代理商: MAX651
M
5V /3.3V /3V or Adjustable, High-Effic ienc y,
Low I
Q
, S tep-Down DC-DC Controllers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
MIN
TYP
MAX
-45
UNITS
V+ = 16.5V, SHDN = 0V or V+
4V
V+
16.5V
4V
V+
16.5V
-45
SHDN Input Current
SHDN Input Voltage High
SHDN Input Voltage Low
1
μA
V
V
Output Voltage
Load Regulation
-47
mV/A
CONDITIONS
Circuit of
Figure 1
MAX649, 0A
I
LOAD
1.5A,
V
IN
= 10V
MAX651, 0A
I
LOAD
1.5A,
V
IN
= 5V
MAX652, 0A
I
LOAD
1.5A,
V
IN
= 5V
MAX649, V+ = 10V,
I
LOAD
= 1A
MAX651, V+ = 5V,
I
LOAD
= 1A
89
MAX652, V+ = 5V,
I
LOAD
= 1A
88
Efficiency
92
%
Circuit of
Figure 1
1.6
V
IH
V
IL
0.4
240
260
4V
V+
16.5V
CS Input Current
±1
μA
V+ = 12V
12
16
20
μs
t
ON
(max)
Switch Maximum
On-Time
C
EXT
= 0.001μF, V+ = 12V
C
EXT
= 0.001μF, V+ = 12V
EXT Rise Time
EXT Fall Time
50
50
ns
ns
V+ = 12V
Switch Minimum
Off-Time
1.8
2.3
2.8
μs
t
OFF
(min)
MAX649C/E, MAX65_C/E
MAX649M, MAX65_M
Current-Limit Trip
Level (V+ to CS)
180
160
210
210
mV
V
CS
4V
V+
16.5V
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