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參數資料
| 型號： | MIC2800-A4SYML TR |
| 廠商： | Micrel Inc |
| 文件頁數： | 1/20頁 |
| 文件大小： | 506K |
| 描述： | IC REG TRPL BUCK/LINEAR 16MLF |
| 標準包裝： | 5,000 |
| 拓撲： | 降壓（降壓）（1），線性（LDO）（2） |
| 功能： | 任何功能 |
| 輸出數： | 3 |
| 頻率 - 開關： | 2MHz |
| 電壓/電流 - 輸出 1： | 可調，600mA |
| 電壓/電流 - 輸出 2： | 1.2V，300mA |
| 電壓/電流 - 輸出 3： | 3.3V，300mA |
| 帶 LED 驅動器： | 無 |
| 帶監控器： | 無 |
| 帶序列發生器： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN，16-MLF? |
| 供應商設備封裝： | 16-MLF?（4x4） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC2800-A4SYMLTR MIC2800-A4SYMLTR-ND |
MIC2800
Digital Power Management IC
2MHz, 600mA DC/DC w/Dual
300mA/300mA Low V
IN
LDOs
LOWQ is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame 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
September 2007
M9999-090507-C
General Description
The MIC2800 is a high performance power management
IC, giving three output voltages with maximum efficiency.
Integrating a 2MHz DC/DC converter with an LDO post
regulator, the MIC2800 gives two high efficiency outputs
with a second, 300mA LDO for maximum flexibility. The
MIC2800 features a LOWQ
?/DIV>
mode, reducing the total
current draw while in this mode to less than 30礎. In
LOWQ
?/DIV>
mode, the output noise of the DC to DC converter
is 75礦
RMS
, significantly lower than other converters which
use a PFM light load mode that can interfere with sensitive
RF circuitry.
The DC to DC converter uses small values of L and C to
reduce board space but still retains efficiencies over 90%
at load currents up to 600mA.
The MIC2800 is a 礐ap design, operating with very small
ceramic output capacitors and inductors for stability,
reducing required board space and component cost and it
is available in fixed output voltages in the 16-pin
3mm x 3mm MLF
?/DIV>
leadless package.
Data sheets and support documentation can be found on
Micrels web site at: www.micrel.com.
Features
" 2.7V to 5.5V input voltage range
" 2MHz DC/DC converter and two stand-alone LDOs
LDO1: Low input voltage is powered directly from
DC/DC converter for highest efficiency
" Integrated power-on reset (OR function for all outputs)
Adjustable delay time
" LOWQ
?/DIV>
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桦南县|
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县级市|
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松桃|
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宽城|
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mode
30礎 Total I
Q
when in LOWQ
?/DIV>
mode
" Tiny 16-pin 3mm x 3mm MLF
?/DIV>
package
DC to DC Converter
" Output current to 600mA in PWM mode
" LOWQ
?/DIV>
Mode: NO NOISE Light load mode
75礦
RMS
output noise in LOWQ
?/DIV>
mode
" 2MHz PWM operation in normal mode
" >90% efficiency
LDOs
" LDO1 input voltage directly connected to DC/DC
converter output voltage for maximum efficiency
Ideal for 1.8V to 1.5V conversion
300mA output current from 1.8V input
Output voltage down to 0.8V
" LDO2 300mA output current capable
" Thermal Shutdown Protection
" Current Limit Protection
Applications
" Mobile phones
" PDAs
" GPS receivers
" Digital still cameras
" Portable media players
Typical Application
LDO
VIN
VIN
SW
FB
LDO1
LDO2
POR
C
SET
LOWQ
EN2
C
BYP
C
BIAS
EN1
MIC2800-xxxYML
Baseband
Memory/DSP
PGND SGND
V
IN
2.7V to 5.5V
4.7礔/
6.3V
C
BYP
0.01礔
C
OUT2
2.2礔
ceramic
C
OUT1
2.2礔
ceramic
C
SET
0.01礔
C
BIAS
0.1礔
2.2礔
ceramic
V
OUT
2.2礖
GND
GND
100 200 300 400 500 600
OUTPUT CURRENT (mA)
50
55
60
65
70
75
80
85
90
95
100
DC/DC 1.8V
OUT
Efficiency
0
3V
3.6V
4.2V
L = 2.2礖
C
OUT
= 2.2礔
/LowQ = V
IN
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相關代理商/技術參數 |
參數描述 |
|---|---|
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| MIC2800-D24MYML TR | 功能描述:線性穩壓器 - 標準 DC-DC + 2 Linear Regulators with LowQ Mode (Lead Free) RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調節: 最大輸入電壓:5.5 V 線路調整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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