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| 型号： | MAX797ESE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-SOIC |
| 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，混合 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 96% |
| 电源电压： | 5 V ~ 30 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-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1409 (CN2011-ZH PDF) |
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19-0221; Rev 4; 9/05
ATION
EVALU
AVAILA
KIT
BLE
Step-Down Controllers with
Synchronous Rectifier for CPU Power
_______________General Description
The MAX796/MAX797/MAX799 high-performance, step-
down DC-DC converters with single or dual outputs
provide main CPU power in battery-powered systems.
These buck controllers achieve 96% efficiency by using
synchronous rectification and Maxim’s proprietary Idle
____________________________Features
? 96% Efficiency
? 4.5V to 30V Input Range
? 2.5V to 6V Adjustable Output
? Preset 3.3V and 5V Outputs (at up to 10A)
Mode? control scheme to extend battery life at full-load
(up to 10A) and no-load outputs. Excellent dynamic
response corrects output transients caused by the latest
dynamic-clock CPUs within five 300kHz clock cycles.
Unique bootstrap circuitry drives inexpensive N-channel
MOSFETs, reducing system cost and eliminating the
crowbar switching currents found in some PMOS/NMOS
switch designs.
The MAX796/MAX799 are specially equipped with a sec-
ondary feedback input (SECFB) for transformer-based
dual-output applications. This secondary feedback path
improves cross-regulation of positive (MAX796) or nega-
tive (MAX799) auxiliary outputs.
?
?
?
?
?
?
?
?
Multiple Regulated Outputs
+5V Linear-Regulator Output
Precision 2.505V Reference Output
Automatic Bootstrap Circuit
150kHz/300kHz Fixed-Frequency PWM Operation
Programmable Soft-Start
375μA Typ Quiescent Current (V IN = 12V, V OUT = 5V)
1μA Typ Shutdown Current
The MAX797 has a logic-controlled and synchronizable
fixed-frequency pulse-width-modulating (PWM) operating
_______________Ordering Information
mode, which reduces noise and RF interference in sensi-
tive mobile-communications and pen-entry applications.
The SKIP override input allows automatic switchover to
idle-mode operation (for high-efficiency pulse skipping) at
light loads, or forces fixed-frequency mode for lowest noise
at all loads.
The MAX796/MAX797/MAX799 are all available in 16-
pin DIP and narrow SO packages. See the table below
PART
MAX796 CPE
MAX796CSE
MAX796C/D
MAX796EPE
MAX796ESE
MAX796MJE
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
16 Plastic DIP
16 Narrow SO
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
to compare these three converters.
Ordering Information continued at end of data sheet.
PART
MAX796
MAX797
MAX799
MAIN OUTPUT
3.3V/5V or adj
3.3V/5V or adj
3.3V/5V or adj
SPECIAL FEATURE
Regulates positive secondary
voltage (such as +12V)
Logic-controlled low-noise mode
Regulates negative secondary
voltage (such as -5V)
*Contact factory for dice specifications.
___________________Pin Configuration
TOP VIEW
SS 1
16 DH
________________________Applications
Notebook and Subnotebook Computers
(SECFB) SKIP 2
REF 3
15 LX
14 BST
PDAs and Mobile Communicators
Cellular Phones
Idle Mode is a trademark of Maxim Integrated Products.
GND 4
SYNC 5
SHDN 6
FB 7
CSH 8
MAX796
MAX797
MAX799
DIP/SO
13 DL
12 PGND
11 VL
10 V+
CSL
9
( ) ARE FOR MAX796/ MAX799.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas 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 |
|---|---|
| MAX797ESE/GG8 | 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 |
| MAX797ESE/GG8-T | 制造商:Maxim Integrated Products 功能描述:STEP DOWN CONTROLLER - Tape and Reel |
| MAX797ESE/GH9 | 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 |
| MAX797ESE/GH9-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 |
| MAX797ESE+ | 功能描述:DC/DC 开关控制器 Step-Down Controller for CPU Power 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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