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参数资料
| 型号： | MAX8646ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 6A 24TQFN |
| 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： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 3.2 V |
| 输入电压： | 2.35 V ~ 3.6 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 500kHz ~ 2MHz |
| 电流 - 输出： | 6A |
| 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： | 24-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
6A, 2MHz Step-Down Regulator
with Integrated Switches
4) Connect IN, LX, and PGND separately to a large
COMPENSATION
TRANSFER
FUNCTION
DOUBLE POLE
OPEN-LOOP
GAIN
THIRD
POLE
copper area to help cool the IC to further improve
efficiency and long-term reliability.
5) Ensure all feedback connections are short and
direct. Place the feedback resistors and compensa-
tion components as close to the IC as possible.
GAIN (dB)
POWER-STAGE
TRANSFER
FUNCTION
SECOND
POLE
6) Route high-speed switching nodes, such as LX,
away from sensitive analog areas (FB, COMP).
FIRST AND SECOND ZEROS
Figure 4. Type III Compensation Illustration
TOP VIEW
Pin Configuration
18
17
16
15
14
13
Prebiased Output waveforms in the Typical Operating
Characteristics section for an example selection of the
above parameters. Connecting the PREBIAS pin to the
PGND 19
PGND 20
12 PWRGD
11 FREQ
GND disables the prebias soft-start feature and causes
the MAX8646 to discharge any voltage present on the
output capacitors and then commence its soft-start.
IN 21
IN 22
MAX8646
10 OUT
9 FB
PCB Layout Considerations and
IN 23
8
COMP
Thermal Performance
Careful PCB layout is critical to achieve clean and sta-
EN 24
+
1
2
3
4
5
6
7
GND
ble operation. It is highly recommended to duplicate the
MAX8646 EV kit layout for optimum performance. If devia-
tion is necessary, follow these guidelines for good PCB
layout:
1) Connect input and output capacitors to the power
ground plane; connect all other capacitors to the sig-
THIN QFN
nal ground plane.
2) Place capacitors on V DD , V IN , and SS as close as
possible to the IC and its corresponding pin using
direct traces. Keep power ground plane (connected
to PGND) and signal ground plane (connected to
GND) separate.
3) Keep the high-current paths as short and wide as
possible. Keep the path of switching current short
and minimize the loop area formed by LX, the out-
put capacitors, and the input capacitors.
PROCESS: BiCMOS
Chip Information
14
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8646EVKIT+ | 功能描述:直流/直流开关调节器 Evaluation Kit for the MAX8646 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 |
| MAX8647ETE+ | 功能描述:LED照明驱动器 Charge Pump for 6 White/RGB LEDs 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 |
| MAX8647ETE+T | 功能描述:LED照明驱动器 Charge Pump for 6 White/RGB LEDs 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 |
| MAX8648ETE | 制造商:MAXIM 功能描述:Pb Free |
| MAX8648ETE+ | 功能描述:LED照明驱动器 Charge Pump for 6 White/RGB LEDs 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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