參數(shù)資料
型號(hào)： MAX653MJA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
中文描述： 1 A SWITCHING REGULATOR, CDIP8
封裝： CERAMIC, DIP-8
文件頁(yè)數(shù)： 2/12頁(yè)
文件大?。?/td> 166K
代理商： MAX653MJA
M
5V /3.3V /3V /Adjustable, High-Effic ienc y,
Low I
Q
, S tep-Down DC-DC Converters
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+...........................................................................................12V
LX .........................................................(V+ - 12V) to (V+ + 0.3V)
LBI, LBO, VFB, SHDN, VOUT........................-0.3V to (V+ + 0.3V)
LX Output Current (Note 1)......................................................1A
LBO Output Current............................................................10mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C)..........................471mW
CERDIP (derate 8.00mW/°C above +70°C)..................640mW
ELECTRICAL CHARACTERISTICS
(V+ = 9V for the MAX639, V+ = 5V for the MAX640/MAX653, I
LOAD
= 0mA, T
A
= T
MIN
to T
MAX
, typical values are at T
A
= +25°C,
unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETER
MIN
4.0
TYP
MAX
11.5
20
5.20
UNITS
V
μA
91
94
87
91
85
89
12.5
16.7
8.8
71.4
8.3
Dropout Voltage
0.5
V
Output Voltage (Note 2)
2.88
3.00
3.12
V
3.17
3.30
3.43
Supply Current
Supply Voltage
10
5.00
4.80
Efficiency
%
CONDITIONS
MAX653
I
OUT
= 100mA, L = 100μH
MAX653, V+ = 4.0V to 11.5V, 0mA < I
OUT
< 100mA
MAX640, V+ = 4.0V to 11.5V, 0mA < I
OUT
< 100mA
MAX639
MAX640
SHDN
= V+, no load
MAX639, V+ = 6.0V to 11.5V, 0mA < I
OUT
< 100mA
Operating Temperature Ranges:
MAX639C_ _ .......................................................0°C to +70°C
MAX639E_ _ ....................................................-40°C to +85°C
MAX639MJ A ..................................................-55°C to +125°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
I
OUT
= 100mA, L = 100μH
I
OUT
= 25mA, L = 470μH
I
OUT
= 100mA, L = 100μH
I
OUT
= 25mA, L = 470μH
I
OUT
= 100mA, L = 100μH
I
OUT
= 25mA, L = 470μH
V+ = 9V, V
OUT
= 5V
V+ = 6V, V
OUT
= 3V
V+ = 9V, V
OUT
= 3.3V
V+ = 4V, V
OUT
= 3.3V
V+ = 9V, V
OUT
= 3V
V+ = 4V, V
OUT
= 3V
V+ = 9V, V
OUT
= 5V
V+ = 6V, V
OUT
= 3V
V+ = 9V, V
OUT
= 3.3V
V+ = 4V, V
OUT
= 3.3V
V+ = 9V, V
OUT
= 3V
V+ = 4V, V
OUT
= 3V
Switch On-Time
42.5
9.0
16.6
13.3
13.3
14.6
50.0
11.7
19.5
15.6
15.6
17.2
57.5
13.5
22.4
17.9
17.9
19.8
μs
10.6
14.2
7.5
60.7
7.1
14.4
19.2
10.1
82.1
9.5
MAX653
MAX639
MAX640
Switch Off-Time
14.6
17.2
19.8
μs
MAX653
MAX639
MAX640
Note 1:
Peak inductor current must be limited to 600mA by using an inductor of 100μH or greater.
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