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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： | 2/27页 |
| 文件大小： | 543K |
| 代理商： | MAX1845EEI |
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M
Dual, High-Efficiency, Step-Down
Controller with Accurate Current Limit
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS (Note 1)
V+ to AGND..............................................................-0.3 to +30V
V
CC
to AGND............................................................-0.3V to +6V
V
DD
to PGND............................................................-0.3V to +6V
AGND to PGND.....................................................-0.3V to +0.3V
PGOOD, OUT_ to AGND..........................................-0.3V to +6V
OVP, UVP, ILIM_, FB_, REF,
SKIP
, TON, ON_ to AGND......................-0.3V to (V
CC
+ 0.3V)
DL_ to PGND..............................................-0.3V to (V
DD
+ 0.3V)
BST_ to AGND........................................................-0.3V to +36V
CS_ to AGND.............................................................-6V to +30V
DH1 to LX1 ..............................................-0.3V to (V
BST1
+ 0.3V)
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.
LX_ to BST_..............................................................-6V to +0.3V
DH2 to LX2 ..............................................-0.3V to (V
BST2
+ 0.3V)
REF Short Circuit to GND...........................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
28-Pin QSOP (derate 10.8mW/°C above +70°C)........860mW
36-Pin 6mm
6mm Thin QFN
(derate 26.3mW/°C above +70°C).............................2105mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
DD
= V
CC
= 5V,
SKIP
= AGND, V+ = 15V,
T
A
= 0
°
C to +85
°
C
, typical values are at +25°C, unless otherwise
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
PWM CONTROLLERS
V+
Battery voltage, V+
V
CC
, V
DD
2
28
5.5
1.818
1.515
1.01
1.827
1.523
1.015
Input Voltage Range
V
CC
/V
DD
4.5
1.782
1.485
0.99
1.773
1.477
0.985
V
FB1 to AGND
FB1 to V
CC
FB1 to OUT1
FB1 to AGND
FB1 to V
CC
FB1 to OUT1
1.8
1.5
1
1.8
1.5
1
V+ = 2V to 28V, I
LOAD
= 0 to 8A,
SKIP
= V
CC
,
+25
°
C to +85
°
C
DC Output Voltage OUT1
(Note 2)
V
OUT1
V+ = 2V to 28V, I
LOAD
= 0 to 8A,
SKIP
= V
CC
,
0
°
C to +85
°
C
V
FB2 to AGND
2.475
2.5
2.525
V+ = 4.5V to 28V,
I
LOAD
= 0 to 4A,
SKIP
= V
CC
,
+25
°
C to +85
°
C
FB2 to OUT2
0.99
1
1.01
FB2 to AGND
2.463
2.5
2.537
DC Output Voltage OUT2
(Note 2)
V
OUT2
V+ = 4.5V to 28V,
I
LOAD
= 0 to 4A,
SKIP
= V
CC
,
0
°
C to +85
°
C
FB2 to OUT2
0.985
1
1.015
V
Output Voltage Adjust Range
Dual-Mode Threshold, Low
OUT1, OUT2
OVP, FB_
1
5.5
0.15
V
V
0.05
0.1
OVP, ILIM_
V
CC
-
1.5
V
CC
-
0.4
Dual-Mode Threshold, High
FB1
V
OUT1
= 1.5V
V
OUT2
= 2.5V
1.9
75
100
-0.1
2.0
2.1
V
R
OUT1
R
OUT2
I
FB
OUT_ Input Resistance
k
FB_ Input Bias Current
Soft-Start Ramp Time
0.1
μA
μs
Zero to full ILIM
1700
Note 1:
For the MAX1845EEI, AGND and PGND refer to a single pin designated GND.
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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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