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| 型号： | MAX1684EEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 3.3V/ADJ 16QSOP |
| 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： | 两者兼有 |
| 输出数： | 1 |
| 输出电压： | 3.3V，1.25 V ~ 14 V |
| 输入电压： | 2.7 V ~ 14 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 300kHz |
| 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： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
Low-Noise, 14V Input, 1A, PWM
Step-Down Converters
Inverting Output
Interchanging the ground and V OUT connections yields
a negative voltage supply (Figure 4). The component
selections are the same as for a positive voltage con-
verter. The absolute maximum ratings limit the output
TOP VIEW
Pin Configuration
voltage range to -1.25V to -5.5V and the maximum
input voltage range to 14V - ? V OUT ? .
PC Board Layout
CVH 1
AIN 2
IN 3
16 PGND
15 SHDN
14 LX
High switching frequencies and large peak currents
make PC board layout a very important part of design.
Poor design can result in excessive EMI on the feed-
back paths and voltage gradients in the ground plane,
both of which result in instability or regulation errors.
Power components such as the MAX1684/MAX1685
CVL 4
AGND 5
REF 6
FB 7
MAX1684
MAX1685
13 LX
12 BOOT
11 STBY
10 ILIM/SS
inductor, input filter capacitor, and output filter capacitor
CC 8
9
SYNC/PWM
should be placed as close together as possible, and
their traces kept short, direct, and wide, Connect their
ground nodes in a star-ground configuration. Keep the
extra copper on the board and integrate into ground as
a pseudo-ground plane.
When using external feedback, the feedback network
should be close to FB, within 0.2 inch (5mm), and the
output voltage feedback should be tapped as close to
the output capacitor as possible. Keep noisy traces,
such as those from LX, away from the voltage feedback
network. Separate the noisy traces by grounded cop-
per. Place the small bypass capacitors within 0.2 inch
(5mm) of their respective inputs. The MAX1684 evalua-
tion kit manual illustrates an example PC board layout,
routing, and pseudo-ground plane.
Connect AIN to IN with a short (0.2 inch) metal trace or a
1 ? resistor and bypass AIN to PGND with a 0.1μF capac-
itor. This acts as a lowpass filter to reduce noise at AIN.
QSOP
Chip Information
TRANSISTOR COUNT: 2061
______________________________________________________________________________________
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1684EEE+ | 功能描述:直流/直流开关转换器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1684EEE+ | 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW)) |
| MAX1684EEE+T | 功能描述:直流/直流开关转换器 14V 1A PWM Step-Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1684EEE-G1105 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX1684EEE-G115 | 制造商:Maxim Integrated Products 功能描述: |
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