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参数资料
型号： MAX1845EEI
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 稳压器
英文描述： Dual, High-Efficiency, Step-Down Controller with Accurate Current Limit
中文描述： DUAL SWITCHING CONTROLLER, 620 kHz SWITCHING FREQ-MAX, PDSO28
封装： 0.150 INCH, 0.025 INCH PITCH, MO-137AD, QSOP-28
文件页数： 7/27页
文件大小： 543K
代理商： MAX1845EEI
M
Dual, High-Efficiency, Step-Down
Controller with Accurate Current Limit
_______________________________________________________________________________________
7
0
4.5
3.0
1.5
6.0
7.5
9.0
10.5
12.0
13.5
15.0
5
15
10
20
25
30
M
SUPPLY VOLTAGE V+ (V)
S
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP = V
CC
)
I
CC
V
CC
= V
DD
= 5V
I
DD
I+ (25
μ
A TYP)
0
100
200
300
400
500
600
700
800
900
1000
1100
M
SUPPLY VOLTAGE V+ (V)
S
μ
A
5
10
15
20
25
30
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE (SKIP = GND)
V
CC
= V
DD
= 5V
I
DD
(600nA typ)
I
CC
I+
10
0.01
10
1
0.1
LOAD CURRENT (A)
60
70
80
90
100
40
50
20
30
M
E
EFFICIENCY vs. LOAD CURRENT
(8A COMPONENTS, SKIP = V
CC
)
V+ = 7V
V+ = 20V
V+ = 12V
OUT1 = 1.8V
50
0.01
10
1
0.1
LOAD CURRENT (A)
75
80
85
90
95
100
65
60
70
55
M
E
EFFICIENCY vs. LOAD CURRENT
(8A COMPONENTS, SKIP = GND)
V+ = 7V
V+ = 20V
OUT1 = 1.8V
V+ = 12V
10
50
30
70
90
110
130
150
170
190
210
230
250
0
0.5
1.0
1.5
2.0
2.5
CURRENT-LIMIT TRIP POINT
vs. ILIM VOLTAGE
M
ILIM VOLTAGE (V)
C
10
0.01
10
1
0.1
LOAD CURRENT (A)
60
70
80
90
100
40
50
20
30
M
E
EFFICIENCY vs. LOAD CURRENT
(4A COMPONENTS, SKIP = V
CC
)
V+ = 7V
V+ = 20V
V+ = 12V
OUT2 = 2.5V
80
75
0.01
10
1
0.1
LOAD CURRENT (A)
95
100
90
85
M
E
EFFICIENCY vs. LOAD CURRENT
(4A COMPONENTS, SKIP = GND)
V+ = 7V
V+ = 12V
V+ = 20V
OUT2 = 2.5V
1.0
1.2
1.1
1.4
1.3
1.6
1.5
1.7
1.9
1.8
2.0
1.0
1.2
1.3
OVP VOLTAGE (V)
1.1
1.4
1.5
1.6
1.7
1.8
M
N
NORMALIZED OVERVOLTAGE PROTECTION
THRESHOLD vs. OVP VOLTAGE
I
2A/div
20μs/div
V
100mV/div
LOAD-TRANSIENT RESPONSE
(4A COMPONENTS, PWM MODE, V
OUT2
= 2.5V)
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components from Table 1, V
IN
= 15V,
SKIP
= GND, TON = unconnected, T
A
= +25
°
C, unless otherwise noted.)
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相关代理商/技术参数
参数描述
MAX1845EEI+ 功能描述:电流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1845EEI+T 功能描述:电流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1845EEI-T 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14
MAX1845EEI-TG05 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1845EEI-TG068 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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