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参数资料
| 型号： | MAX1705 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | DC/DC变换器 |
| 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节电池、大电流、低噪声、升压型DC-DC转换器，带有线性稳压器 |
| 文件页数： | 1/20页 |
| 文件大小： | 215K |
| 代理商： | MAX1705 |
_______________General Desc ription
The MAX1705/MAX1706 are high-efficiency, low-noise,
step-up DC-DC converters with an auxiliary linear-
regulator output. These devices are intended for use in
battery-powered wireless applications. They use a syn-
chronous rectifier pulse-width-modulation (PWM) boost
topology to generate 2.5V to 5.5V outputs from battery
inputs, such as 1 to 3 NiCd/NiMH cells or 1 Li-Ion cell.
The MAX1705 has an internal 1A N-channel MOSFET
switch. The MAX1706 has a 0.5A switch. Both devices
also have a built-in low-dropout linear regulator that
delivers up to 200mA.
With an internal synchronous rectifier, the MAX1705/
MAX1706 deliver 5% better efficiency than similar non-
synchronous converters. They also feature a pulse-
frequency-modulation (PFM) standby mode to improve
efficiency at light loads, and a 1μA shutdown mode. An
efficiency-enhancing track mode reduces the step-up
DC-DC converter output to 300mV above the linear-reg-
ulator output.
Both devices come in a 16-pin QSOP package, which
occupies the same space as an 8-pin SO. Other features
include two shutdown-control inputs for push-on/push-off
control, and an uncommitted comparator for use as a volt-
age monitor.
________________________Applic ations
Digital Cordless Phones
Personal Communicators
Palmtop Computers
Hand-Held Instruments
PCS Phones
Wireless Handsets
Two-Way Pagers
____________________________Features
o
Up to 96% Efficiency
o
1.1V
IN
Guaranteed Start-Up
o
Up to 850mA Output (MAX1705)
o
Step-Up Output (2.5V to 5.5V adjustable)
o
Linear Regulator (1.25V to 5.0V adjustable)
o
PWM/PFM Synchronous-Rectified Topology
o
300kHz PWM Mode or Synchronizable
o
1μA Shutdown Mode
o
Voltage Monitor
o
Pushbutton On/Off Control
M
1- to 3-Cell, High-Current, Low-Noise,
Step-Up DC-DC Converters with Linear Regulator
________________________________________________________________ Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
LBP
POUT
ONA
ONB
LX
PGND
CLK/SEL
LBO
LDO
TOP VIEW
MAX1705
MAX1706
QSOP
LBN
REF
OUT
TRACK
GND
FB
FBLDO
__________________Pin Configuration
LX
POUT
OUT
STEP-UP OUTPUT
FB
CLK/SEL
ONA
ONB
TRACK
INPUT 0.7V TO5.5V
PGND
GND
LDO
FBLDO
LBP
LBO
LBN
REF
MAX1705
MAX1706
LINEAR
REGULATOR
OUTPUT
LOW-BATTERY
DETECTION
ON/OFF CONTROL
HIGH
EFFICIENCY
LOW
NOISE
__________Typic al Operating Circ uit
19-1198; Rev 0; 4/97
EVALUAVAILABLE
PART
MAX1705
C/D
MAX1705EEE
MAX1706
C/D
MAX1706EEE
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
Dice*
16 QSOP
Dice*
16 QSOP
______________Ordering Information
*
Dice are tested at T
A
= +25°C, DC parameters only.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| MAX1705D | 1- to 3-Cell, High-Current, Low-Noise, Step-Up DC-DC Converters with Linear Regulator |
| MAX1705EEE | 18-Bit Universal Bus Transceivers With 3-State Outputs 56-SSOP -40 to 85 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX17050EVKIT# | 功能描述:电源管理IC开发工具 MAX17050 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 |
| MAX17050X+ | 制造商:Maxim Integrated Products 功能描述:MODELGAUGE M3 FG WLCSP - Tape and Reel |
| MAX17050X+T10 | 制造商:Maxim Integrated Products 功能描述:MODELGAUGE M3 FG WLCSP - Tape and Reel |
| MAX17058EVKIT# | 功能描述:电源管理IC开发工具 MAX17058 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 |
| MAX17058G+ | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:MODELGAUGE (1 CELL) TDFN - Rail/Tube |
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