参数资料
| 型号： | MIC2169BMM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 10-MSOP |
| 标准包装： | 2,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 92% |
| 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 ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 其它名称： | MIC2169BMMTR MIC2169BMMTR-ND |
MIC2169
General Description
Micrel
MIC2169
500kHz PWM Synchronous Buck Control IC
Features
The MIC2169 is a high-ef ? ciency, simple to use 500kHz PWM
synchronous buck control IC housed in a small MSOP-10
package. The MIC2169 allows compact DC/DC solutions
with a minimal external component count and cost.
The MIC2169 operates using a 3V to 14.5V input, without
the need for 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 MIC2169 senses current across the high-side N-Channel
MOSFET, eliminating the need for an expensive and lossy
current-sense resistor. Current limit accuracy is maintained
via a positive temperature coef ? cient that tracks the increas-
ing R DS(ON) of the external MOSFET. Additional cost and
space are saved by the internal in-rush-current limiting and
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3V to 14.5V input voltage range
Adjustable output voltage down to 0.8V
Up to 95% ef ? ciency
500kHz PWM operation
Adjustable current limit senses high-side N-Channel
MOSFET current
No external current-sense resistor
Adaptive gate drive increases ef ? ciency
Fast transient response
– Externally compensated
Overvoltage protection protects the load in fault
conditions
Dual mode current limit speeds up recovery time
Hiccup mode short-circuit protection
Small size MSOP 10-lead package
digital soft-start.
Applications
The MIC2169 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
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Point-of-load DC/DC conversion
Set-top boxes
Graphic cards
LCD power supplies
Telecom power supplies
Networking power supplies
Cable modems and routers
100 μ F
4.7 μ F
SD103BWS
0.1 μ F
100
95
90
MIC2169 Efficiency
85
VDD
BST
CS
1k Ω
80
150pF
4k Ω
100nF
VIN
MIC2169
COMP/EN
GND
HSD
VSW
LSD
FB
IRF7821
2.5 μ H
IRF7821
10k Ω
3.24k Ω
3.3V
150 μ F x 2
75
70
65
60
55
50
0
2
4
V IN = 5V
V OUT = 3.3V
6 8 10 12 14 16
I LOAD (A)
MIC2169 Adjustable Output 500kHz 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
March 2009
1
M9999-032409
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2169BYMM | 功能描述:DC/DC 开关控制器 500kHz PWM Synchronous Buck Controller 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 |
| MIC2169BYMM TR | 功能描述:DC/DC 开关控制器 500kHz PWM Synchronous Buck Controller 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 |
| MIC2169BYMME | 功能描述:直流/直流开关转换器 Synchronous Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2169BYMME TR | 功能描述:直流/直流开关转换器 Synchronous Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2169MM | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500 KHZ PWM SYNCHRONOUS BUCK CONTROL IC |
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