參數(shù)資料
型號(hào): MIC2202
廠商: Micrel Semiconductor,Inc.
英文描述: HIGH EFFICIENCY 2MHZ SYNCHRONOUS BUCK CONVERTER 1UP STABLE PWM REGULATOR
中文描述: 高效2MHz同步降壓轉(zhuǎn)換器1UP穩(wěn)定的PWM調(diào)壓器
文件頁(yè)數(shù): 1/18頁(yè)
文件大?。?/td> 182K
代理商: MIC2202
May 2004
1
M9999-052104
MIC2202
Micrel
Typical Application
MIC2202
High Efficiency 2MHz Synchronous Buck
Converter 1
μ
F Stable PWM Regulator
General Description
The Micrel MIC2202 is a high efficiency 2MHz PWM synchro-
nous buck regulator. The fast 2MHz operation along with a
proprietary compensation scheme allows the smallest pos-
sible external components. The MIC2202 can operate with
a 1
μ
F ceramic output capacitor and a small, low DC-resis-
tance, 2.2
μ
H inductor, reducing system size and cost while
allowing a high level of efficiency.
The MIC2202 operates from 2.3V to 5.5V input and features
internal power MOSFETs that can supply over 600mA of
output current with output voltages down to 0.5V. The
MIC2202 implements a constant 2MHz pulse- width-modu-
lation (PWM) control scheme which reduces noise in sensi-
tive RF, audio, and communications applications. Addition-
ally, the MIC2202 can be synchronized to an external clock,
or multiple MIC2202s can easily be daisy-chained with the
SYNCLOCK feature.
The MIC2202 has a high bandwidth loop (up to 500kHz)
which allows ultra fast transient response times. This is very
useful when powering applications that require fast dynamic
response such as CPU cores and RF circuitry in high
performance cellular phones and PDAs.
The MIC2202 is available in 10-pin MSOP and 3mm
×
3mm
MLF-10L package options with an operating junction
temperature range from –40
°
C to +125
°
C .
Features
Input voltage range: 2.3V to 5.5V
Output down to 0.5V/600mA
2MHz PWM operation
Stable with 1
μ
F ceramic output capcitor.
Ultra-fast transient response (up to 500kHz GBW)
Internal compensation
All ceramic capacitors
>95% efficiency
Fully integrated MOSFET switches
Easily synchronized to external clock
SYNCLOCK feature to daisy chain multiple 2202s
Requires only 4 external components
1% line and load regulation
Logic controlled micropower shutdown
Thermal shutdown and current limit protection
10-pin MSOP and 3mm
×
3mm MLF-10L package
options
–40
°
C to +125
°
C junction temperature range
Applications
Cellular phones
PDAs
802.11 WLAN power supplies
FPGA/ASIC power supplies
Dynamically adjustable power supply for CDMA/W-
CDMA RF power amps
DSL modems
Tape drives
10nF
2.2
μ
H
V
3.3V
600mA
V
2.3V to 5.5V
1
μ
F
10k
1.78k
EN
6
5
1
SYNC_IN
SYNC_OUT
10
9
8
7
2
3
4
Adjustable Output Synchronous Buck Converter
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
MicroeadFrame and MLF are trademarks of Amkor Technology, Inc.
60
65
70
75
80
85
90
95
100
0
0.1
OUTPUT CURRENT (A)
0.2
0.3
0.4
0.5
0.6
E
Efficiency 3.3V
OUT
5V
IN
4.2V
IN
L = 2.2
μ
H
C
OUT
= 1
μ
F
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC2202_07 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:High Efficiency 2MHz Synchronous Buck Converter 1μF Stable PWM Regulator
MIC2202-1.2BML 功能描述:IC REG BUCK 1.2V 0.6A 10MLF RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓(降壓) 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12
MIC2202-1.2BML TR 功能描述:IC REG BUCK 1.2V 0.6A 10MLF RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓(降壓) 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12
MIC2202-1.2BMM 功能描述:IC REG BUCK 1.2V 0.6A 10MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓(降壓) 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12
MIC2202-1.2BMM TR 功能描述:IC REG BUCK 1.2V 0.6A 10MSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓(降壓) 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP(0.300",7.62mm) 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12