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參數(shù)資料
| 型號： | MIC2800-ADJYML |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | Digital Power Management IC 2MHz, 600mA DC/DC w/Dual 300mA/300mA Low VIN LDOs |
| 中文描述： | 數(shù)字電源管理IC，600mA的直流/直流瓦特2MHz的/雙300mA/300mA低VIN LDO的 |
| 文件頁數(shù)： | 1/21頁 |
| 文件大?。?/td> | 645K |
| 代理商： | MIC2800-ADJYML |
MIC2800
Digital Power Management IC
2MHz, 600mA DC/DC w/Dual
300mA/300mA Low V
IN
LDOs
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 mode, reducing the total
current draw while in this mode to less than 30μA. In
LOWQ mode, the output noise of the DC to DC
converter is 75μV
RMS
, significantly lower than other
converters which use a PFM light load mode that can
interfere with sensitive RF circuitry.
LOWQ is a trademark of Micrel, Inc.
MLF and
Micro
LeadFrame 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
June 2006
M9999-061406
(408) 955-1690
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 μCap 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
leadless package.
Data sheets and support documentation can be found on
Micrel’s 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
Typical Application
Integrated power-on reset (OR function for all outputs)
–
Adjustable delay time
LOWQ mode
–
30μA Total I
Q
when in LOWQ mode
Tiny 16-pin 3mm x 3mm MLF
package
DC to DC Converter
Output current to 600mA in PWM mode
LOWQ Mode: NO NOISE Light load mode
–
75μV
RMS
output noise in LOWQ 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
LDO
SW
FB
VIN
VIN
LDO1
LDO2
POR
C
SET
SGND
LOWQ
EN2
C
BYP
C
BIAS
PGND
EN1
MIC2800-xxxYML
Baseband
Memory/DSP
V
IN
2.7V to 5.5V
4.7μF/
6.3V
C
BYP
0.01μF
C
OUT2
2.2μF
ceramic
C
OUT1
2.2μF
ceramic
C
SET
0.01μF
C
BIAS
0.1μF
2.2μF
ceramic
V
OUT
2.2μH
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 = 2.2μH
C
= 2.2μF
/LowQ = V
IN
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相關代理商/技術參數(shù) |
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|---|---|
| MIC280-0BM6 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| MIC2800-D24MYML | 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述: |
| MIC2800-D24MYML TR | 功能描述:線性穩(wěn)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(jié): 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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