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參數(shù)資料
| 型號： | MAX1706 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| 中文描述： | 1至3節(jié)電池、大電流、低噪聲、升壓型DC-DC轉(zhuǎn)換器，帶有線性穩(wěn)壓器 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大小： | 215K |
| 代理商： | MAX1706 |
M
1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
______________________________________________________________________________________
17
Implementing S oft-S tart
To implement soft-start, set CLK/SEL low on power-up;
this forces PFM operation and reduces the peak switch-
ing current to 435mA. Once the circuit is in regulation,
CLK/SEL can be set high for full-power operation.
Adding a Manual Power Reset
A momentary pushbutton switch can be used to turn
the MAX1705/MAX1706 on and off (Figure 10). ONA is
pulled low and
ONB
is pulled high to turn the part off.
When the momentary switch is pressed,
ONB
is pulled
low and the regulator turns on. The switch must be
pressed long enough for the microcontroller (μC) to exit
reset (200ms) and drive ONA high. A small capacitor is
added to help debounce the switch. The μC issues a
logic high to ONA, which holds the part on regardless
of the switch state. To turn the regulator off, press the
switch again, allowing the μC to read the switch status
and pull ONA low. When the switch is released,
ONB
is
pulled high.
___________________Chip Information
TRANSISTOR COUNT: 1649
SUBSTRATE CONNECTED TO GND
MAX1705
300
2 NiCd/NiMH
2 NiCd/NiMH
3 NiCd/NiMH or 1 Li-Ion
2.4
2.4
3.6
3.3
5.0
5.0
730
500
850
MAX1706
200
450
350
550
Table 5. Typical Available Output Current
μ
C
V
DD
I/O
MAX1705
MAX1706
ONA
ONB
OUT
I/O
0.1
μ
F
ON/OFF
270k
270k
Figure 10. Momentary Pushbutton On/Off Switch
MAX1705
MAX1706
PA
RF
LX
POUT
GND
LDO
CONTROL
INPUTS
μ
C
I/O
Figure 9. Typical Phone Application
1 NiCd/NiMH
1.2
3.3
NUMBER OF CELLS
INPUT VOLTAGE
(V)
STEP-UP OUTPUT VOLTAGE:
(PA POWER SUPPLY)
(V)
TOTAL OUTPUT CURRENT
(mA)
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PDF描述 |
|---|---|
| MAX1706EEE | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| MAX1708 | High-Frequency, High-Power, Low-Noise, Step-Up DC-DC Converter |
| MAX1708EEE | CHOKE COIL 2.2UH 1000MA SMD |
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| MAX1709EVKIT | MAX1709 Evaluation Kit |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX17061AETI+ | 功能描述:LED照明驅(qū)動器 8-String White LED Driver w/SMBus RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX17061AETI+T | 功能描述:LED照明驅(qū)動器 8-String White LED Driver w/SMBus RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX17061AEVCMAXQU+ | 功能描述:LED 照明開發(fā)工具 Evaluation Kit/Evaluation system for MAX17061A RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
| MAX17061AEVKIT+ | 功能描述:LED 照明開發(fā)工具 MAX17061A Eval Kit RoHS:否 制造商:Fairchild Semiconductor 產(chǎn)品:Evaluation Kits 用于:FL7732 核心: 電源電壓:120V 系列: 封裝: |
| MAX17061ETI+ | 功能描述:LED照明驅(qū)動器 8-String White LED Driver w/SMBus RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:SO-16N |
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