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参数资料
| 型号： | MAX1791EUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 300kHz |
| 电源电压： | 5 V ~ 20 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
ATION
EVALU
AVAILA
19-1923; Rev 1; 10/05
KIT
BLE
High-Efficiency, 10-Pin μMAX, Step-Down
Controllers for Notebooks
General Description
The MAX1762/MAX1791 PWM step-down controllers
provide high efficiency, excellent transient response,
and high DC output accuracy needed for stepping
down high-voltage batteries to generate low-voltage
CPU core, I/O, and chipset RAM supplies in notebook
computers and PDAs.
Maxim’s proprietary Quick-PWM? pulse-width modula-
tor is a free-running constant on-time type with input
feed-forward. Its high operating frequency (300kHz)
allows small external components to be utilized in PC
board area-critical applications such as subnotebook
computers and smart phones. PWM operation occurs
at heavy loads, and automatic switchover to pulse-skip-
ping operation occurs at lighter loads. The external
high-side p-channel and low-side n-channel MOSFETs
require no bootstrap components. The MAX1762/
MAX1791 are simple, easy to compensate, and do not
have the noise sensitivity of conventional fixed-frequen-
cy current-mode PWMs.
These devices achieve high efficiency at a reduced
cost by eliminating the current-sense resistor found in
traditional current-mode PWMs. Efficiency is further
enhanced by their ability to drive synchronous-rectifier
MOSFETs. The MAX1762/MAX1791 come in a 10-pin
μMAX package and offer two fixed voltages (Dual
Mode?) for each device, 1.8V/2.5V/adj (MAX1762) and
3.3V/5.0V/adj (MAX1791).
Features
? High Operating Frequency (300kHz)
? No Current-Sense Resistor
? Accurate Current Limit
? ±1% Total DC Error over Line and During
Continuous Conduction
? Dual Mode Fixed Output
1.8V/2.5V/adj (MAX1762)
3.3V/5.0V/adj (MAX1791)
? 0.5V to 5.5V Output Adjust Range
? 5V to 20V Input Range
? Automatic Light-Load Pulse Skipping Operation
? Free-Running On-Demand PWM
? Foldback Mode? UVLO
? PFET/NFET Synchronous Buck
? 4.65V at 25mA Linear Regulator Output
? 5μA Shutdown Supply Current
? 230μA Quiescent Supply Current
? 10-Pin μMAX Package
Ordering Information
________________________Applications
PART
TEMP RANGE
PIN-PACKAGE
Notebooks
Subnotebooks
Handy-Terminals
PDAs
MAX1762 EUB
MAX1791 EUB
-40 ° C to +85 ° C
-40 ° C to +85 ° C
10 μMAX
10 μMAX
Digital Cameras
1.8V/2.5V Logic
and I/O Supplies
Smart Phones
Pin Configuration
V BATT
Typical Operating Circuit
TOP VIEW
(5V TO 20V)
VL 1
10 VP
REF
2
9
DH
VL
MAX1762
MAX1791
VP
FB
OUT
3
4
MAX1762
MAX1791
8
7
CS
DL
REF
DH
V OUT
SHDN
5
6
GND
FB
OUT
SHDN
CS
DL
GND
1.8V/3.3V
μ MAX
Quick-PWM, Dual Mode, and Foldback Mode are a trade-
marks of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1791EUB+ | 功能描述:DC/DC 开关控制器 Step-Down for Notebook 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 |
| MAX1791EUB+ | 制造商:Maxim Integrated Products 功能描述:CONTROLLER ((NW)) |
| MAX1791EUB+T | 功能描述:DC/DC 开关控制器 Step-Down for Notebook 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 |
| MAX1791EUB-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 |
| MAX1791EVKIT | 功能描述:DC/DC 开关控制器 Evaluation Kit for the MAX1791 MAX1762 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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