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参数资料
| 型号： | MAX1703 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | DC/DC变换器 |
| 英文描述： | 1-Cell to 3-Cell, High-Power 1.5A, Low-Noise, Step-Up DC-DC Converter |
| 中文描述： | 1节至3节电池、大功率(1.5A)、低噪声、升压型DC-DC转换器 |
| 文件页数： | 8/16页 |
| 文件大小： | 273K |
| 代理商： | MAX1703 |
M
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
8
_______________________________________________________________________________________
_______________Detailed Description
The MAX1703 is a highly efficient, low-noise power
supply for portable RF and data-acquisition instru-
ments. It combines a boost switching regulator, N-
channel power MOSFET, P-channel synchronous
rectifier, precision reference, shutdown control, versa-
tile gain block, and power-good (POK) comparator
(Figure 1) in a 16-pin narrow SO package.
The switching DC-DC converter boosts a 1- to 3-cell
input to a fixed 5V or an adjustable output between
2.5V and 5.5V. Typically the MAX1703 starts from a
low, 0.9V input and remains operational down to 0.7V.
The MAX1703 is optimized for use in cellular phones
and other applications requiring low noise during full-
power operation, as well as low quiescent current for
maximum battery life in low-power mode and shut-
down. It features constant-frequency (300kHz), low-
noise PWM operation with up to 1.5A output capability.
See Table 1 for typical outputs. A low-quiescent-cur-
rent, low-power mode offers an output up to 150mA
and reduces quiescent power consumption to 300μW.
In shutdown mode, the quiescent current is further
reduced to just 1μA. Figure 2 shows the standard appli-
cation circuit for the MAX1703.
2.15V
IC POWER
1.25V
DUAL
MODE/
FB
OUT
REFERENCE
UNDERVOLTAGE LOCKOUT
START-UP
OSCILLATOR
300kHz
OSCILLATOR
PFM/PWM
CONTROLLER
PFM/PWM
P
N
EN
D
EN
POUT
LXN
LXP
PGND
COMPARATOR
OSC
MODE
FB
EN
Q
Q
Q
OUT
REF
FB
POKIN
GND
CLK/SEL
ON
RDY
REF
REF
ON
OUT
MAX1703
POK
N
GAIN
BLOCK
REF
AO
N
AIN
Figure 1. Functional Block Diagram
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PDF描述 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17030EVKIT+ | 功能描述:电源管理IC开发工具 MAX17030 Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX17030GTL+ | 功能描述:电压模式 PWM 控制器 1/2/3-Phase PWM IMVP-6.5 VID Ctlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17030GTL+T | 功能描述:电压模式 PWM 控制器 1/2/3-Phase PWM IMVP-6.5 VID Ctlr RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17031ETG+ | 功能描述:电压模式 PWM 控制器 Dual PWM Step-Down Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX17031ETG+T | 功能描述:电压模式 PWM 控制器 Dual PWM Step-Down Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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