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参数资料
| 型号： | MAX1972 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step- Down Regulator with POR and RSI/PFO |
| 中文描述： | 双路、180°异相、1.4MHz、750mA、降压型调节器，带有POR和RSI/PFO |
| 文件页数： | 2/20页 |
| 文件大小： | 371K |
| 代理商： | MAX1972 |
M
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
IN, EN, FBSEL1, FBSEL2, PFO,
POR
,
RSI, V
CC
to GND ...................................................-0.3V to +6V
COMP1, COMP2, FB1, FB2,
REF to GND.............................................-0.3V to (V
CC
+ 0.3V)
LX1, LX2 to PGND .......................................-0.3V to (V
IN
+ 0.3V)
PGND to GND .......................................................-0.3V to +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.
Continuous Power Dissipation (T
A
= +70
°
C)
16-pin QSOP (derate 8.3mW/
°
C above +70
°
C)...........667mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
ELECTRICAL CHARACTERISTICS
(V
IN
= V
CC
= V
EN
= 5V, R
POR
= 100k
to IN, R
PFO
= 100k
to IN, V
RSI
= 0, C
REF
= 0.1μF, FBSEL1 = unconnected, FBSEL2 =
unconnected,
T
A
= 0
°
C to +85
°
C
, unless otherwise noted. Typical values are at T
A
= +25
°
C.)
PARAMETER
IN AND V
CC
IN Voltage Range
CONDITIONS
MIN
TYP
MAX
UNITS
2.6
5.5
10
20
100
60
2.55
V
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
5
10
1
1
2.40
2.35
IN Supply Current
Switching with no load
V
IN
= 3.3V
mA
IN Shutdown Current
V
IN
= 5.5V, V
EN
= 0
μA
V
CC
rising
V
CC
falling
V
CC
Undervoltage
Lockout Threshold
2.20
V
REF
REF Voltage
REF Shutdown Resistance
REF Soft-Start Current
FB1 AND FB2
I
REF
= 0, V
IN
= 2.6V to 5.5V
REF to GND, V
EN
= 0
V
REF
= 1V
1.188
1.200
10
25
1.212
25
30
V
μA
20
FB_ Regulation Voltage
FBSEL_ = unconnected, OUT1 = FB1, OUT2 = FB2,
V
COMP_
= 1.20V to 1.80V, V
IN
= 2.6V to 5.5V
FBSEL_ = unconnected
V
IN
= 2.6V to 5.5V
V
IN
= 4.5V to 5.5V
1.188
1.200
1.212
V
OUT_ Voltage Range
1.2
1.782
3.2670
1.485
2.475
750
30
30
22.5
22.5
V
IN
1.818
3.330
1.150
2.525
V
V
COMP1
= 1.2V, FBSEL1= GND
V
COMP1
= 1.2V, FBSEL1 = V
CC
V
COMP2
= 1.2V, FBSEL2 = GND
V
COMP2
= 1.2V, FBSEL2 = V
CC
1.800
3.3
1.5
2.5
OUT1 Regulation Voltage
V
OUT2 Regulation Voltage
V
IN
= 2.6V to 5.5V
V
Maximum Output Current
Guaranteed by design (Note 1)
mA
FBSEL1 = GND
FBSEL1 = V
CC
FBSEL2 = GND
FBSEL2 = V
CC
60
60
45
45
0.01
120
120
90
90
0.1
FB1 Input Resistance
Measured from FB1 to
GND
k
FB2 Input Resistance
Measured from FB2 to
GND
k
FB_ Input Bias Current
FB1 or FB2, FBSEL_ = unconnected, V
FB1
= V
FB2
= 1.15V
μA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1972EEE | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1972EEE+ | 功能描述:直流/直流开关调节器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1972EEE+T | 功能描述:直流/直流开关调节器 Dual 180 Out 1.4MHz 750mA Step-Down RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MAX1972EEE-G05 | 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 |
| MAX1972EEE-T | 功能描述:直流/直流开关调节器 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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