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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： | 1/16页 |
| 文件大小： | 273K |
| 代理商： | MAX1703 |
________________General Description
The MAX1703 is a high-efficiency, low-noise, step-up
DC-DC converter intended for use in battery-powered
wireless applications. It uses a synchronous-rectified
pulse-width-modulation (PWM) boost topology to gen-
erate a 2.5V to 5.5V output from battery inputs, such as
one to three NiCd/NiMH cells or one Li-Ion cell. The
device includes a 2A, 75m
, N-channel MOSFET
switch and a 140m
, P-channel synchronous rectifier.
With its internal synchronous rectifier, the MAX1703
delivers up to 5% better efficiency than similar nonsyn-
chronous converters. It also features a pulse-frequency-
modulation (PFM) low-power mode to improve efficiency
at light loads, and a 1μA shutdown mode.
The MAX1703 comes in a 16-pin narrow SO package
and includes an uncommitted comparator that generates
a power-good or low-battery-warning output. It also
contains a linear gain block that can be used to build a
linear regulator.
For lower-power outputs and a smaller package, refer
to the MAX1700/MAX1701. For dual outputs (step-up
plus linear regulator), refer to the MAX1705/MAX1706.
For an on-board analog-to-digital converter, refer to the
MAX848/MAX849.
The MAX1703 evaluation kit is available to speed designs.
____________________________Features
o
Up to 95% Efficiency
o
Up to 1.5A Output
o
Fixed 5V or Adjustable Step-Up Output
(2.5V to 5.5V)
o
0.7V to 5.5V Input Range
o
Low-Power Mode (300μW)
o
Low-Noise, Constant-Frequency Mode (300kHz)
o
Synchronizable Switching Frequency
(200kHz to 400kHz)
o
1μA Logic-Controlled Shutdown
o
Power-Good Comparator
o
Uncommitted Gain Block
________________________Applications
Digital Cordless Phones
PCS Phones
Wireless Handsets
Two-Way Pagers
Personal Communicators
Palmtop Computers
Hand-Held Instruments
M
1-Cell to 3-Cell, High-Power (1.5A),
Low-Noise, Step-Up DC-DC Converter
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
1
19-1336; Rev 2; 11/98
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Ordering Information
Typical Operating Circuit
PART
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
16 Narrow SO
MAX1703ESE
PGND
GND
FB
POUT
OUT
LXP, LXN
OFF
INPUT
0.7V TO 5.5V
OR
ON
SYNC
PWM
PFM
OUTPUT
5V OR ADJ
UP TO 1.5A
CLK/
SEL
ON
POKIN
POK
AO
AIN
REF
POWER-GOOD
INPUT
POWER-GOOD
OUTPUT
GAIN-BLOCK
OUTPUT
GAIN-BLOCK INPUT
MAX1703
Pin Configuration
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
REF
ON
POUT
LXP
POUT
PGND
LXN
PGND
CLK/SEL
TOP VIEW
MAX1703
Narrow SO
FB
POKIN
AIN
OUT
GND
AO
POK
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1703ESE | 1-Cell to 3-Cell, High-Power 1.5A, Low-Noise, Step-Up DC-DC Converter |
| MAX1705 | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| MAX1706C | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| MAX1706D | BALUN HYBRID 750-950MHZ 1:4 |
| MAX1705C | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
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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