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参数资料
| 型号： | MAX8627ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 1A 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 3 V ~ 5 V |
| 输入电压： | 0.9 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 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： | 14-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
MAX8627
Low V BATT , 20μA IQ, 1MHz Synchronous
Boost Converter with True Shutdown
Setting the Current Limit
ILIM sets the current limit when the output reaches
regulation. It is different from the startup current limit
used during soft-start to control inrush current. For the
maximum current limit of 3.5A, connect ILIM to GND.
To set the current limit (I LIM ) lower than 3.5A, connect
ILIM to a resistor-divider from POUT to GND as shown
in Figure 1. Note, however, that the idle-mode threshold
does not change with voltage setting on ILIM.
Set R3 between 30k ? and 300k ? , then calculate the
value of R4 as follows:
PC Board Layout and Routing
Good PC board layout is important to achieve optimal
performance from the MAX8627. Poor design can
cause excessive conducted and/or radiated noise.
Conductors carrying discontinuous currents and any
high-current path should be made as short and wide as
possible. Keep the feedback network (R1 and R2) very
close to the IC, preferably within 0.2in of the FB and
GND pins. Nodes with high dV/dt (switching nodes)
should be kept as small as possible and routed away
from FB. Connect the input and output capacitors as
close as possible to the IC. Refer to the MAX8627
?
R 4 = R 3 x ?
? 1 ?
12
V POUT
? ( I LIM + 0 . 64 A ) × 0 . 2865 ?
?
?
evaluation kit for a PC board layout example.
Chip Information
PROCESS: BiCMOS
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8627EVKIT | 制造商:Maxim Integrated Products 功能描述:LOW VBATT 20+A IQ 1MHZ SYNCHRONO - Rail/Tube |
| MAX8629CETI+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8629ETI+ | 制造商:Maxim Integrated Products 功能描述: |
| MAX8630WETD20+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8630WETD20+T | 功能描述:LED照明驱动器 125mA 1x/1.5x Charge Pump for 5 WLEDs RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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