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| 型号： | MAX5951ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/25页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 占空比： | 88% |
| 电源电压： | 4.5 V ~ 16 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： | 32-WFQFN 裸露焊盘 |
| 包装： | 管件 |
19-0546; Rev 0; 5/06
12V/5V Input Buck PWM Controller
General Description
The MAX5951 is a 12V pulse-width modulated (PWM),
step-down, DC-DC controller. The device operates over
the input-voltage range of 8V to 16V or 5V ±10%, and
provides an adjustable output from 0.8V to 5.5V. The
device delivers up to 10A of load current with excellent
load-and-line regulation.
The MAX5951 PWM section utilizes a voltage-mode
control scheme for good noise immunity and offers
external compensation, allowing for maximum flexibility
with a wide selection of inductor values and capacitor
types. The device operates at a fixed switching fre-
quency that is programmable from 100kHz to 1MHz
and can be synchronized to an external clock signal
though the SYNCIN input. The device includes under-
voltage lockout (UVLO) and digital soft-start. Protection
features include lossless valley-mode current limit, hic-
cup-mode output short-circuit protection, and thermal
shutdown.
The MAX5951 is available in a space-saving 5mm x
5mm, 32-pin thin QFN package and is specified for
operation over the -40°C to +85°C extended tempera-
ture range. Refer to the MAX5950 data sheet for a pin-
compatible PWM controller with hot swap.
Features
? 8V to 16V or 5V ±10% Input-Voltage Range
? Lossless Valley-Mode Current Sensing
? Output Voltage Adjustable from 0.8V to 5.5V
? Voltage-Mode Control
? External Compensation for Maximum Flexibility
? Digital Soft-Start
? Sequencing or Ratiometric Tracking
? Startup Synchronization
? Programmable PGOOD Output
? Programmable Switching Frequency from 100kHz
to 1MHz
? External Frequency Synchronization
? SYNCIN and SYNCOUT Enable 180° Out-of-Phase
Operation
? Thermal Shutdown and Short-Circuit Protection
? Space-Saving, 5mm x 5mm, 32-Pin TQFN Package
Ordering Information
PART
MAX5951ETJ+
TEMP RANGE
-40°C to +85°C
PIN-
PACKAGE
32 TQFN
PKG
CODE
T3255-4
Applications
PCI-e Express Modules?
General 12V or 5V Input PWM Controllers
Blade Servers
RAID
+ Denotes lead-free package.
TOP VIEW
Pin Configuration
Base Stations
24
23
22
21
20
19
18
17
Workstations
CS- 25
PGND 26
DL 27
DREG 28
16
15
14
13
SYNCIN
SYNCOUT
AGND
THRESH
LX 29
DH 30
BST 31
REG 32
+
MAX5951
12
11
10
9
DCENI
N.C.
N.C.
N.C.
1
2
3
4
5
6
7
8
PCI-e Express Modules is a trademark of PCI-SIG.
TQFN
(5mm x 5mm)
________________________________________________________________ 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 |
|---|---|
| MAX5951ETJ+ | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ+T | 功能描述:电压模式 PWM 控制器 12V/5V Buck PWM Controller RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5951ETJ-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX5952AEAX+ | 功能描述:热插拔功率分布 Quad PSE Controller for POE RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| MAX5952AEAX+CK8 | 功能描述:热插拔功率分布 Quad PSE Controller for POE RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
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