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参数资料
型号： MAX1652EEE
厂商： MAXIM INTEGRATED PRODUCTS INC
元件分类： 稳压器
英文描述： High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
中文描述： SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PDSO16
封装： 0.150 INCH, 0.025 INCH PITCH, QSOP-16
文件页数： 1/28页
文件大小： 265K
代理商： MAX1652EEE
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 408-737-7600 ext. 3468.
General Desc ription
The MAX1652–MAX1655 are high-efficiency, pulse-
width-modulated (PWM), step-down DC-DC controllers
in small QSOP packages. The MAX1653/MAX1655 also
come in 16-pin narrow SO packages that are pin-
compatible upgrades to the popular MAX797. Improve-
ments include higher duty-cycle operation for better
dropout, lower quiescent supply currents for better
light-load efficiency, and an output voltage down to 1V
(MAX1655).
The MAX1652–MAX1655 achieve up to 96% efficiency
and deliver up to 10A using a unique Idle Mode syn-
chronous-rectified PWM control scheme. These devices
automatically switch between PWM operation at heavy
loads and pulse-frequency-modulated (PFM) operation
at light loads to optimize efficiency over the entire out-
put current range. The MAX1653/MAX1655 also feature
logic-controlled, forced PWM operation for noise-sensi-
tive applications.
All devices operate with a selectable 150kHz/300kHz
switching frequency, which can also be synchronized
to an external clock signal. Both external power switch-
es are inexpensive N-channel MOSFETs, which provide
low resistance while saving space and reducing cost.
The MAX1652 and MAX1654 have an additional feed-
back pin that permits regulation of a low-cost second
output tapped from a transformer winding. The
MAX1652 provides an additional positive output. The
MAX1654 provides an additional negative output.
The MAX1652–MAX1655 have a 4.5V to 30V input volt-
age range. The MAX1652/MAX1653/MAX1654’s output
range is 2.5V to 5.5V while the MAX1655’s output range
extends down to 1V. An evaluation kit (MAX1653EVKIT)
is available to speed designs.
Applic ations
Notebook Computers
PDAs
Cellular Phones
Hand-Held Computers
Handy-Terminals
Mobile Communicators
Distributed Power
____________________________Features
o
96% Efficiency
o
Small, 16-Pin QSOP Package
(half the size of a 16-pin narrow SO)
o
Pin-Compatible with MAX797 (MAX1653/MAX1655)
o
Output Voltage Down to 1V (MAX1655)
o
4.5V to 30V Input Range
o
99% Duty Cycle for Lower Dropout
o
170μA Quiescent Supply Current
o
3μA Logic-Controlled Shutdown
o
Dual, N-Channel, Synchronous-Rectified Control
o
Fixed 150kHz/300kHz PWM Switching,
or Synchronized from 190kHz to 340kHz
o
Programmable Soft Start
o
Low-Cost Secondary Outputs (MAX1652/MAX1654)
M
High-Effic ienc y, PWM, S tep-Down
DC-DC Controllers in 16-Pin QS OP
________________________________________________________________ Maxim Integrated Products
1
19-1357; Rev 1; 7/98
EVALUATION KIT
AVAILABLE
Ordering Information
S elec tion Guide
Pin Configurations appear at end of data sheet.
Idle Mode is a trademark of Maxim Integrated Products.
PART
FEEDBACK
VOLTAGE (V)
SPECIAL
FEATURE
COMPATIBILITY
MAX1652
2.5
Regulates positive
secondary voltage
(such as +12V)
Same pin order
as MAX796, but
smaller package
MAX1653
2.5
Logic-controlled,
low-noise mode
Pin-compatible
with MAX797
MAX1654
2.5
Regulates negative
secondary voltage
(such as -5V)
Same pin order
as MAX799, but
smaller package
MAX1655
1
Low output volt-
ages (1V to 5.5V);
logic-controlled,
low-noise mode
Pin compatible
with MAX797
(except for feed-
back voltage)
PART
MAX1652
EEE
MAX1653
ESE
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-PACKAGE
16 QSOP
16 Narrow SO
MAX1653EEE
MAX1654
EEE
MAX1655
ESE
MAX1655EEE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
16 QSOP
16 QSOP
16 Narrow SO
16 QSOP
相关PDF资料
PDF描述
MAX1653 High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
MAX1654 High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
MAX1655 High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
MAX1655EEE High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
MAX1653EEE High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP
相关代理商/技术参数
参数描述
MAX1652EEE+ 功能描述:DC/DC 开关控制器 PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX1652EEE+T 功能描述:DC/DC 开关控制器 PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX1652EEE-T 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX1653EEE 功能描述:DC/DC 开关控制器 PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
MAX1653EEE+ 功能描述:DC/DC 开关控制器 PWM Step-Down RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK
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