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| 型号： | MAX1775EEE |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| PWM 型： | 控制器 |
| 输出数： | 2 |
| 频率 - 最大： | 1.25MHz |
| 占空比： | 100% |
| 电源电压： | 2.7 V ~ 28 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
19-1811; Rev 2; 4/09
ATION
EVALU
AVAILA
KIT
BLE
Dual-Output Step-Down
DC-DC Converter for PDA/Palmtop Computers
General Description
The MAX1775 dual, step-down DC-DC converter gen-
erates both the main (+3.3V at over 2A) and core
(+1.8V at up to 1.5A) supplies for a complete power
solution for PDAs, subnotebooks, and other hand-held
devices. The main output is adjustable from +1.25V to
+5.5V. The core output is adjustable from 1V to 5V.
Both switching converters operate at up to 1.25MHz for
small external components and use synchronous recti-
fiers to achieve efficiencies up to 95%. Operation with
up to 100% duty cycle provides the lowest possible
dropout voltage to extend useful battery life.
The MAX1775 accepts inputs from +2.7V up to +28V,
allowing use with many popular battery configurations as
well as AC-DC wall adapters. Digital soft-start reduces
battery current surges at power-up. Both the main and
core converters have separate shutdown inputs. The
MAX1775 comes in a small 16-pin QSOP package.
The MAX1775 evaluation kit is available to help reduce
design time.
________________________Applications
Features
? Dual, High-Efficiency, Synchronous Rectified
Step-Down Converter
? Main Power
Adjustable from +1.25V to +5.5V
Over 2A Load Current
Up to 95% Efficiency
? Core Power
Adjustable from 1V to 5V
Internal Switches
Up to 1.5A Load Current
Up to 92% Efficiency
? 100% (max) Duty Cycle
? Up to 1.25MHz Switching Frequency
? Input Voltage Range from +2.7V to +28V
? 170 μ A Quiescent Current
? 5 μ A Shutdown Current
? Digital Soft-Start
? Independent Shutdown Inputs
Ordering Information
Hand-Held Computers
PDAs
PART
MAX1775EEE
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
16 QSOP
Internet Access Tablets
POS Terminals
Subnotebooks
Typical Operating Circuit
IN 2.7V TO 5.5V (28V IN CASCADE)
IN
CVH
Pin Configuration
ON
OFF
SHDNM
INC
TOP VIEW
SHDNM 1
16 LXC
ON
OFF
SHDNC
PDRV
NDRV
MAIN
3.3V
OVER 2A
CVL
SHDNC 2
15 INC
PGND 3
14 GND
REF
MAX1775 CS+
CS-
NDRV 4
MAX1775
13 FBC
FBM
CVL 5
IN 6
PDRV 7
CVH 8
12 CS-
11 CS+
10 FBM
9
REF
PGND
GND
LXC
FBC
CORE
1.8V
1.5A
16 QSOP
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1775EEE+ | 功能描述:直流/直流开关转换器 Dual-Out Step-Down for PDA/Palmtop RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1775EEE+T | 功能描述:直流/直流开关转换器 Dual-Out Step-Down for PDA/Palmtop RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1775EEE-T | 功能描述:直流/直流开关转换器 Dual-Out Step-Down for PDA/Palmtop RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1775EEE-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1775EVKIT | 功能描述:直流/直流开关转换器 Evaluation Kit for the MAX1775 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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