参数资料
| 型号： | MIC2198BML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 12-MLF |
| 标准包装： | 5,000 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 76% |
| 电源电压： | 4.5 V ~ 32 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 ~ 125°C |
| 封装/外壳： | 12-VFDFN 裸露焊盘，12-MLF? |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2198BMLTR MIC2198BMLTR-ND |
MIC2198
General Description
The MIC2198 is a high-power 500kHz synchronous buck
DC-to-DC controller housed in a small 4mm × 4mm MLF?
12-pin package. The MIC2198 operates from a wide 4.5V
to 32V input and can be programmed for output voltages
from 0.8V to 6V. The wide input voltage capability makes
the MIC2198 an ideal solution for point-of-load DC-to-DC
conversion in 5V, 12V and higher systems.
The 500kHz switching frequency allows the use of a small
inductor and small output capacitors. The current mode PWM
control along with the external COMP pin allows for ease of
stability compensation and fast transient response across a
wide range of applications.
An all N-Channel synchronous architecture and powerful
output drivers allow up to 20A of output current capability.
For higher ef?ciency at higher input voltages, refer to the
300kHz MIC2199.
The MIC2198 is available in a 12-pin 4mm × 4mm MLF?
package with a junction temperature range from –40°C to
125°C.
Typical Application
V IN
5.5V to 24V
Micrel, Inc.
MIC2198
500kHz 4mm × 4mm Synchronous Buck Controller
Features
? 4.5V to 32V input range
? 4mm × 4mm MLF? package
? 500kHz PWM operation
? >90% ef?ciency
? Output voltage adjustable down to 0.8V
? 20A output current capability
? Drives all N-Channel MOSFETs
? Logic controlled micropower shutdown
? Cycle-by-cycle current limiting
? Adjustable undervoltage lockout
? Frequency foldback overcurrent protection
Applications
? Point-of-load DC-to-DC conversion from 5V, 12V
and higher supplies
? Telecom equipment
? Wireless modems
? Servers
? Base stations
22μF
2k?
2.2nF
U1 MIC2198BML
VIN VDD
BST
EN/UVLO HSD
VSW
LSD
CSH
VOUT
COMP
FB
GND
SD103BWS
0.1μF
1nF
4.7μF
IRF7821
1μH
IRF7821
0.01?
V OUT
3.3V/7A
220μF
10k?
6.04k?
100
95
90
85
80
75
70
65
60
55
50
0
Efficiency
vs. Load Current
V IN = 5.5V
V OUT = 3.3V
2
4
6
8
5.5V–24V to 3.3V/7A Converter
I LOAD (A)
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
October 2005
1
MIC2198
相关PDF资料 |
PDF描述 |
|---|---|
| MIC2199BML TR | IC REG CTRLR BUCK PWM CM 12-MLF |
| MIC2202BMM TR | IC REG BUCK ADJ 0.6A 10MSOP |
| MIC2203BMM TR | IC REG BUCK ADJ 0.3A 10MSOP |
| MIC2204BMM TR | IC REG BUCK SYNC ADJ 0.6A 10MSOP |
| MIC2205-1.58YML TR | IC REG BUCK SYNC 1.58V .6A 10MLF |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2198YML | 功能描述:DC/DC 开关控制器 500KHz 12 Lead Sync Buck Controller - Lead Free 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 |
| MIC2198YML TR | 功能描述:DC/DC 开关控制器 500KHz 12 Lead Sync Buck Controller (Lead Free) 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 |
| MIC2198YMLTR | 制造商:Micrel 功能描述:DC-DC Controller Sync Buck 4.5V to 32V |
| MIC2198YML-TR | 功能描述:Buck Regulator Positive Output Step-Down DC-DC Controller IC 12-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:有效 输出类型:晶体管驱动器 功能:降压 输出配置:正 拓扑:降压 输出数:1 输出阶段:1 电压 - 电源（Vcc/Vdd）:4.5 V ~ 32 V 频率 - 开关:500kHz 占空比（最大）:0.76 同步整流器:是 时钟同步:无 串行接口:- 控制特性:使能 工作温度:-40°C ~ 125°C （TJ） 封装/外壳:12-VFDFN 裸焊盘，12-MLF? 供应商器件封装:12-MLF?（4x4） 标准包装:1 |
| MIC2199 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:300kHz 4mm 】 4mm Synchronous Buck Converter |
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