参数资料
| 型号： | MIC2169AYMM |
| 厂商： | Micrel Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR DIVIDER PWM 10-MSOP |
| 标准包装： | 100 |
| 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： | 是 |
| 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： | 576-1709-5 MIC2169AYMM-ND |
MIC2169A
General Description
Micrel
MIC2169A
500kHz PWM Synchronous Buck Control IC
Features
The MIC2169A is a high-efficiency, simple to use 500kHz
PWM synchronous buck control IC housed in a small MSOP-
10 package. The MIC2169A allows compact DC/DC solutions
with a minimal external component count and cost.
The MIC2169A 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 efficiencies over
95% across a wide load range.
The MIC2169A 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 by a positive temperature coefficient 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.
?
?
?
?
?
?
?
?
?
?
?
?
?
3V to 14.5V input voltage range
Adjustable output voltage down to 0.8V
Up to 95% efficiency
500kHz PWM operation
Adjustable current limit senses high-side N-Channel
MOSFET current
No external current-sense resistor
Adaptive gate drive increases efficiency
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
The MIC2169A 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
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
100 ? F
5 ?
4.7 ? F
SD103BWS
0.1 ? F
0.1 ? F
100
95
90
85
MIC2169A Efficiency
VDD
BST
CS
1k ?
80
75
GND
150pF
100nF
4k ?
0.1μF
VIN HSD
MIC2169A
VSW
COMP/EN
LSD
FB
2 ?
IRF7821
IRF7821
2.5 ? H
1.4 ?
1000pF
10k ?
3.24k ?
3.3V
150 ? F x 2
70
65
60
55
50
0
2
4
V IN = 5V
V OUT = 3.3V
6 8 10 12 14 16
I LOAD (A)
MIC2169A 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
April 2009
1
M9999-040609
相关PDF资料 |
PDF描述 |
|---|---|
| MIC2169BMM TR | IC REG CTRLR BUCK PWM VM 10-MSOP |
| MIC2169BYMME | IC REG CTRLR BUCK PWM VM 10-MSOP |
| MIC2171BU TR | IC REG MULTI CONFIG 2.5A TO263-5 |
| MIC2174-1YMM TR | IC REG CTRLR BUCK PWM 10-MSOP |
| MIC2176-3YMM TR | IC REG CTRLR BUCK PWM 10-MSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2169A-YMM | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169AYMM TR | 功能描述:DC/DC 开关控制器 500KHz Synchronous 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 |
| MIC2169B | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169B_10 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500kHz PWM Synchronous Buck Control IC |
| MIC2169BMM | 功能描述:IC REG CTRLR BUCK PWM VM 10-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。