參數(shù)資料
型號(hào)： MAX746
廠商： Maxim Integrated Products, Inc.
英文描述： Parallel-Load 8-Bit Shift Registers 16-CDIP -55 to 125
中文描述： 高效率、PWM、降壓型、N溝道DC-DC控制器
文件頁(yè)數(shù)： 2/16頁(yè)
文件大小： 157K
代理商： MAX746
M
High-Effic ienc y, PWM, S tep-Down,
N-Channel DC-DC Controller
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage V+, AV+ to GND..............................-0.3V to 17V
HIGH, EXT to GND....................................................-0.3V to 21V
AGND to GND..........................................................-0.3V to 0.3V
All Other Pins................................................-0.3V to (V+ + 0.3V)
Reference Current (I
REF
) ....................................................±2mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C)...............800mW
Operating Temperature Ranges:
MAX746C_E........................................................0°C to +70°C
MAX746E_E .....................................................-40°C to +85°C
MAX746MJ E ..................................................-55°C to +125°C
J unction Temperatures:
MAX746C_E/E_E..........................................................+150°C
MAX746MJ E.................................................................+175°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
ELECTRICAL CHARACTERISTICS
(V+ = 10V, I
LOAD
= 0A, I
REF
= 0
μ
A, T
A
= T
MIN
to T
MAX
, 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
SYMBOL
MIN
TYP
MAX
UNITS
Efficiency
94
%
Load Regulation
1.3
2.5
%
Line Regulation
0.1
%/V
OUT Leakage Current
50
80
μ
A
FB Input Logic Low
40
mV
Output Voltage
Input Voltage
4
15
V
V
OUT
4.85
5.08
5.25
V
Feedback Voltage
V
FB
V
Reference Voltage
V
REF
1.96
2.00
2.04
Reference Load Regulation
9
20
mV
μ
A
μ
A
Soft-Start Source Current
0.5
1.0
1.5
Soft-Start Fault Current (Note 1)
100
500
Supply Current (Note 2)
I
SUPP
1.7
mA
0.95
1.4
20
μ
A
Oscillator Frequency
f
OSC
80
100
120
kHz
CONDITIONS
I
REF
= 0
μ
A to 100
μ
A
0V < (V+ - CS) < 0.125V
V+ = 4V to 15V, external feedback mode
V
OUT
= 5V
For dual-mode switchover
SS = 0V
SS = 2V
Operating, V+ = 15V
Operating, V+ = 10V
Shutdown mode
(V+ - CS) = 0V,
external feedback mode
FB Input Leakage Current
1
100
nA
FB = 2V
I
REF
= 0
μ
A
MAX746E/M
MAX746E/M
1.95
2.00
2.05
MAX746C
V+
V+ = 6V to 15V, 0V < (V+ - CS) < 0.125V,
FB = 0V (includes line and load regulation)
MAX746C
1.96
2.00
2.04
V+ = 6V to 15V, FB = 0V
0.05
Circuit of Figure 1, I
LOAD
= 0.5A to 2.5A,
V+ = 6V
1.97
2.00
2.03
V
MAX746E/M
MAX746C
1.1
1.4
MAX746E/M
85
100
115
MAX746C
相關(guān)PDF資料
PDF描述
MAX746CPE Parallel-Load 8-Bit Shift Registers 16-CDIP -55 to 125
MAX746CSE Parallel-Load 8-Bit Shift Registers 20-LCCC -55 to 125
MAX746EPE Parallel-Load 8-Bit Shift Registers 16-CDIP -55 to 125
MAX746ESE Parallel-Load 8-Bit Shift Registers 16-CFP -55 to 125
MAX746MJE Parallel-Load 8-Bit Shift Registers 16-CDIP -55 to 125
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MAX7461EUK+T 功能描述:視頻 IC Loss-Of-Sync Alarm RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
MAX7461EUK-T 功能描述:視頻 IC RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
MAX7462USA 功能描述:有源濾波器 RoHS:否 制造商:Maxim Integrated 通道數(shù)量:1 截止頻率:150 KHz 電源電壓-最大:11 V 電源電壓-最小:4.74 V 最大工作溫度:+ 85 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP N 封裝:Tube
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