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| 型号： | MAX1705EEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 17/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 0.85A 16QSOP |
| 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： | 2.5 V ~ 5.5 V |
| 输入电压： | 0.7 V ~ 5.5 V |
| 频率 - 开关： | 260kHz ~ 340kHz |
| 电流 - 输出： | 850mA |
| 同步整流器： | 无 |
| 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： | 带卷 (TR) |
| 供应商设备封装： | 16-QSOP |
1 to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
270k ?
MAX1705
μ C
LX
POUT
MAX1706
CONTROL
INPUTS
MAX1705
MAX1706
ON/OFF
ONB
OUT
V DD
I/O
GND
LDO
ONA
I/O
I/O μ C
RF
PA
0.1 μ F
270k ?
Figure 10. Typical Phone Application
Table 5. Typical Available Output Current
Figure 11. Momentary Pushbutton On/Off Switch
NO. OF CELLS
INPUT VOLTAGE
(V)
STEP-UP OUTPUT VOLTAGE:
(PA POWER SUPPLY)
(V)
TOTAL OUTPUT CURRENT
(mA)
MAX1705 MAX1706
1 NiCd/NiMH
2 NiCd/NiMH
2 NiCd/NiMH
3 NiCd/NiMH or 1 Li-Ion
1.2
2.4
2.4
3.6
3.3
3.3
5.0
5.0
300
730
500
850
200
450
350
550
Implementing Soft-Start
To implement soft-start, set CLK/SEL low on power-up;
this forces PFM operation and reduces the peak switch-
TRANSISTOR COUNT: 1649
Chip Information
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 11). 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.
SUBSTRATE CONNECTED TO GND
______________________________________________________________________________________
17
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| MAX17061AETI+ | 功能描述:LED照明驱动器 8-String White LED Driver w/SMBus 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 |
| MAX17061AETI+T | 功能描述:LED照明驱动器 8-String White LED Driver w/SMBus 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 |
| MAX17061AEVCMAXQU+ | 功能描述:LED 照明开发工具 Evaluation Kit/Evaluation system for MAX17061A RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
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