参数资料
| 型号： | MIC2199BML 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： | 330kHz |
| 占空比： | 85% |
| 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： | MIC2199BMLTR MIC2199BMLTR-ND |
V IN
Micrel, Inc.
General Description
The MIC2199 is a high-power 300kHz synchronous buck
DC-to-DC controller housed in a small 4mm × 4mm MLF?
12-pin package. The MIC2199 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 MIC2199 an ideal solution for point-of-load DC-to-DC
conversion in 5V, 12V, 24V, and 28V systems.
The 300kHz 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 smaller external components, refer to the 500kHz
MIC2198.
The MIC2199 is available in a 12-pin 4mm × 4mm MLF?
package with a junction temperature range from –40°C to
125°C.
Typical Application
4.5V to 24V
MIC2199
MIC2199
300kHz 4mm × 4mm Synchronous Buck Converter
Features
? 4.5V to 32V input range
? 4mm × 4mm MLF? package
? 300kHz PWM operation
? 95% efficiency
? 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,
24V, 28V supplies
? Telecom equipment
? Wireless modems
? Servers
? Base stations
U1 MIC2199BML
SD103BWS
100.0
22μF
VIN
VDD
4.7μF
EN/UVLO
BST
HSD
VSW
0.1μF
IRF7821
2μH
0.01?
V OUT
3.3V/7A
95.0
LSD
IRF7821
220μF
0
2k?
COMP
GND
CSH
VOUT
FB
1nF
10k?
6.04k?
90.0
85.0
2
4
V OUT = 3.3V
6
8
2.2nF
4.5V–24V to 3.3V/7A Converter
I LOAD (A)
Efficiency for
V IN = 5V and V OUT = 3.3V
MLF and Micro LeadFrame are registered 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
January 2010
1
M9999-011310
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|---|---|
| MIC2199YML | 功能描述:DC/DC 开关控制器 300KHz 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 |
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