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參數(shù)資料
| 型號： | MAX1763EUE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85 |
| 中文描述： | 3.4 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.40 MM, EXPOSED PAD, TSSOP-16 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大小： | 456K |
| 代理商： | MAX1763EUE |
M
electrolytic capacitors; their high ESR typically results
in higher output ripple voltage.
Bypass Components
A few ceramic bypass capacitors are required for prop-
er operation. Bypass REF to GND with 0.22μF. Also,
bypass OUT to GND with a 1μF ceramic capacitor, and
connect OUT to POUT with a 4.7
resistor. Each of
these components should be placed as close to their
respective IC pins as possible, within 0.2in (5mm).
Table 5 lists suggested suppliers.
Layout Considerations
High switching frequencies and large peak currents
make PC board layout a critical part of design. Poor
design will cause excessive EMI and ground bounce,
both of which can cause instability or regulation errors
by corrupting the voltage and current feedback signals.
Power components, such as the inductor, converter IC,
and filter capacitors, should be placed as close together
as possible, and their traces should be kept short, direct,
and wide. Keep the voltage feedback network very close
to the IC, within 0.2in (5mm) of the FB pins. Keep noisy
traces, such as those from the LX pin, away from the
voltage feedback networks and guarded from them
using grounded copper. If an external rectifier is used,
its traces must be kept especially short and use an
absolute minimum of copper area to avoid excess
capacitance that can slow the operation of the on-chip
synchronous rectifier and actually reduce efficiency.
Refer to the MAX1763 EV kit for a full PC board example.
The MAX1763 TSSOP-EP package features an
exposed thermal pad on its underside. This pad lowers
the package
’
s thermal resistance by providing a direct
thermal heat path from the die to the PC board.
Additionally, the ground pin (GND) also channels heat.
Connect the exposed thermal pad and GND to circuit
ground by using a large pad or multiple vias to the
ground plane.
Step-Up/Step-Down Applications
In some battery-powered applications, the battery volt-
age range overlaps the output voltage. In this case,
depending on the battery voltage, the regulator will
have to step the voltage up or down. To make a step-
up/step-down regulator, use the gain block to make a
linear regulator that follows the step-up converter. In
this case, if the battery voltage is low, then the circuit
will step up, and when the battery voltage is high, the
linear regulator will drop the voltage. See the
Gain
Block
section on how to use the gain block to make a
linear regulator. When the output voltage is greater than
the regulation voltage, then the synchronous rectifier
will be held on, reducing the dropout, and thus increas-
ing the efficiency when the battery voltage is close to,
but slightly above, the regulation voltage.
Chip Information
TRANSISTOR COUNT: 1530
SUBSTRATE CONNECTED TO GND
1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
14
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相關PDF資料 |
PDF描述 |
|---|---|
| MAX1765 | Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85 |
| MAX1765EEE | 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator |
| MAX1765EUE | 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator |
| MAX1812 | Dual USB Switch with Fault Blanking |
| MAX1812EUB | Dual USB Switch with Fault Blanking |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1763EUE+ | 功能描述:直流/直流開關轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1763EUE+T | 功能描述:直流/直流開關轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1763EUE+TG069 | 制造商:Maxim Integrated Products 功能描述: |
| MAX1763EUE-T | 功能描述:直流/直流開關轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| MAX1763EUE-TG068 | 制造商:Maxim Integrated Products 功能描述:16 PINS TSSOP PKG - Tape and Reel |
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