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参数资料
| 型号： | MIC2168YMM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 10-MSOP |
| 标准包装： | 100 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1.1MHz |
| 占空比： | 90% |
| 电源电压： | 3 V ~ 14.5 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： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-1708-5 MIC2168YMM-ND |
MIC2168
General Description
The MIC2168 is a high-ef?ciency, simple to use 1MHz PWM
synchronous buck control IC housed in a small MSOP-10
package. The MIC2168 allows compact DC/DC solutions
with a minimal external component count and cost.
The MIC2168 operates from a 3V to 14.5V input, without
the need of any additional bias voltage. The output voltage
can be precisely regulated down to 0.8V. The adaptive all
N-Channel MOSFET drive scheme allows ef?ciencies over
95% across a wide load range.
The MIC2168 senses current across the high-side N-Chan-
nel MOSFET, eliminating the need for an expensive and
lossy current-sense resistor. Current limit accuracy is main-
tained by a positive temperature coef?cient that tracks the
increasing R DS(ON) of the external MOSFET. Further cost
and space are saved by the internal in-rush-current limiting
digital soft-start.
The MIC2168 is available in a 10-pin MSOP package, with a
wide junction operating range of –40°C to +125°C.
All support documentation can be found on Micrel’s web site
at www.micrel.com.
Typical Application
V IN = 5V
Micrel, Inc.
MIC2168
1MHz PWM Synchronous Buck Control IC
Features
? 3V to 14.5V input voltage range
? Adjustable output voltage down to 0.8V
? Up to 95% ef?ciency
? 1MHz PWM operation
? Adjustable current-limit senses high-side N-Channel
MOSFET current
? No external current sense resistor
? Adaptive gate drive increases ef?ciency
? Ultra-fast response with hysteretic transient recovery
mode
? Overvoltage protection protects the load in fault
conditions
? Dual mode current limit speeds up recovery time
? Hiccup mode short-circuit protection
? Internal soft-start
? Dual function COMP and EN pin allows low-power shut-
down
? Small size MSOP 10-lead package
Applications
? Point-of-load DC/DC conversion
? Set-top boxes
? Graphic cards
? LCD power supplies
? Telecom power supplies
? Networking power supplies
? Cable modems and routers
100μF
4.7μF
SD103BWS
0.1μF
VDD
BST
CS
1k?
VIN
MIC2168
HSD
VSW
IRF7821
1.2μH
3.3V
100pF
4k?
100nF
COMP/EN
GND
LSD
FB
IRF7821
10k?
3.24k?
150μF x 2
MIC2168 Adjustable Output 1MHz Converter
Micrel, Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel + 1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
April 2005
1
M9999-040805
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2168YMM TR | 功能描述:直流/直流开关调节器 Replaced by MIC2168AYMM TR (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC2169 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169_09 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169A | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169A_09 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
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