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| 型号： | MAX1972EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/21页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 0.75A DL 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 两者兼有 |
| 输出数： | 2 |
| 输出电压： | 1.5V，1.8V，2.5V，3.3V，可调 |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 750mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
Down Regulator with POR and RSI/PFO
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)
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
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.
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
CONDITIONS
MIN
TYP
MAX
UNITS
IN AND V CC
IN Voltage Range
2.6
5.5
V
IN Supply Current
IN Shutdown Current
V CC Undervoltage
Lockout Threshold
Switching with no load
V IN = 3.3V
V IN = 5.5V, V EN = 0
V CC rising
V CC falling
MAX1971
MAX1970/MAX1972
MAX1970/MAX1972
MAX1971
2.20
5
10
1
1
2.40
2.35
10
20
100
60
2.55
mA
μA
V
REF
REF Voltage
REF Shutdown Resistance
REF Soft-Start Current
I REF = 0, V IN = 2.6V to 5.5V
REF to GND, V EN = 0
V REF = 1V
1.188
20
1.200
10
25
1.212
25
30
V
?
μA
FB1 AND FB2
FB_ Regulation Voltage
OUT_ Voltage Range
FBSEL_ = unconnected, OUT1 = FB1, OUT2 = FB2,
V COMP_ = 1.20V to 1.80V, V IN = 2.6V to 5.5V
FBSEL_ = unconnected
1.188
1.2
1.200
1.212
V IN
V
V
OUT1 Regulation Voltage
OUT2 Regulation Voltage
V IN = 2.6V to 5.5V
V IN = 4.5V to 5.5V
V IN = 2.6V to 5.5V
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
1.782
3.2670
1.485
2.475
1.800
3.3
1.5
2.5
1.818
3.330
1.150
2.525
V
V
Maximum Output Current
Guaranteed by design (Note 1)
750
mA
FB1 Input Resistance
FB2 Input Resistance
Measured from FB1 to
GND
Measured from FB2 to
GND
FBSEL1 = GND
FBSEL1 = V CC
FBSEL2 = GND
FBSEL2 = V CC
30
30
22.5
22.5
60
60
45
45
120
120
90
90
k ?
k ?
FB_ Input Bias Current
FB1 or FB2, FBSEL_ = unconnected, V FB1 = V FB2 = 1.15V
0.01
0.1
μA
2
_______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1972EEE-TG05 | 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 |
| MAX1973EUB | 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 |
| MAX1973EUB+ | 功能描述:直流/直流开关调节器 1A 1.4MHz Step-Down Regulator 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 |
| MAX1973EUB+T | 功能描述:直流/直流开关调节器 1A 1.4MHz Step-Down Regulator 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 |
| MAX1973EUB-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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