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| 型号： | MAX1951AESA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2A 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.6 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 2A |
| 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： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOIC |
1MHz, 2A, 2.6V to 5.5V Input, PWM DC-DC
Step-Down Regulator with Enable
ABSOLUTE MAXIMUM RATINGS
IN, V CC to GND ........................................................-0.3V to +6V
COMP, FB, EN to GND...............................-0.3V to (V CC + 0.3V)
LX Current (Note 1).............................................................±4.5A
PGND to GND..............................................Internally connected
Continuous Power Dissipation (T A = +70°C)
8-Pin SO (derate 12.2mW/°C above +70°C).................976mW
Junction-to-Case Thermal Resistance ( θ JC ) (Note 2)
8-Pin SO ........................................................................32°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
Note 1: LX has internal clamp diodes to PGND and IN. Applications that forward bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
Note 2: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial .
ELECTRICAL CHARACTERISTICS
(V IN = V CC = V EN = 3.3V, V PGND = V GND = 0V, FB in regulation, T A = -40°C to +85°C, unless otherwise noted. Typical values are at
T A = +25°C.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IN AND V CC
IN Voltage Range
2.6
5.5
V
Supply Current
Shutdown Current
Switching with no load, LX floating
EN = GND
V IN = 5.5V
7
0.1
10
0.4
mA
mA
V CC Undervoltage Lockout
Threshold
When LX starts/stops switching
V CC rising
V CC falling
1.92
2.19
2.07
2.32
V
COMP
COMP Transconductance
COMP Clamp Voltage, Low
COMP Clamp Voltage, High
From FB to COMP, V COMP = 0.8V
V IN = 2.6V to 5.5V, V FB = 0.9V
V IN = 2.6V to 5.5V, V FB = 0.7V
40
0.6
1.97
50
1
2.13
80
1.45
2.28
μS
V
V
FB
Output Voltage Range
When using external feedback resistors to drive FB
0.8
V IN
V
FB Regulation Voltage
(Error Amplifier Only)
FB Input Bias Current
I OUT = 0A to 1.5A, V IN = 2.6V to
5.5V
PNP input stage
T A = 0°C to +85°C
T A = -40°C to +85°C
0.789
0.786
-0.1
0.796
0.804
0.804
+0.1
V
μA
LX
V IN = 5V
119
LX On-Resistance, PMOS
I LX = -180mA
V IN = 3.3V
145
266
m ?
V IN = 2.6V
V IN = 5V
171
122
LX On-Resistance, NMOS
I LX = 180mA
V IN = 3.3V
133
246
m ?
V IN = 2.6V
142
2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1951AESA+ | 功能描述:直流/直流开关调节器 1MHz 2A 2.6-5.5V PWM DC/DC 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 |
| MAX1951AESA+T | 功能描述:直流/直流开关调节器 1MHz 2A 2.6-5.5V PWM DC/DC 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 |
| MAX1951ESA | 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 |
| MAX1951ESA+ | 功能描述:直流/直流开关调节器 1MHz 2A 2.6-5.5V PWM DC/DC 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 |
| MAX1951ESA+T | 功能描述:直流/直流开关调节器 1MHz 2A 2.6-5.5V PWM DC/DC 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 |
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