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參數資料
| 型號： | MIC2045 |
| 廠商： | Micrel Semiconductor,Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | SINGLE CHANNEL HIGH CURRENT LOW VOLTAGE, PROTECTED POWER DISTRIBUTION SWITCH |
| 中文描述： | 單聲道高當前的低電壓，保護配電開關 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 269K |
| 代理商： | MIC2045 |
October 2003
1
MIC2044/2045
MIC2044/2045
Micrel
MIC2044/2045
Single Channel, High Current, Low Voltage,
Protected Power Distribution Switch
General Description
The MIC2044 and MIC2045 are high-side MOSFET switches
optimized for general purpose power distribution applications
that require circuit protection. These devices switch up to
5.5V and as low as 0.8V while offering both programmable
current limiting and thermal shutdown to protect the device
and the load. A fault status output is provided to indicate
overcurrent and thermal shutdown fault conditions. Both
devices employ soft-start circuitry to minimize the inrush
current in applications that employ highly capacitive loads.
Additionally, for tighter control over inrush current during start
up, the output slew-rate may be adjusted by an external
capacitor.
The MIC2045 features a auto-reset circuit breaker that latches
the output OFF upon detecting an overcurrent condition
lasting more than 32ms. The output is reset by removing or
reducing the load.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
7, 11,
13, 16
8
2
3
6
4
15
9,12,14
1
5
R
SET
100
W
Note:
All V
IN
pins (7, 11, 13, 16) must be externally tied together.
All V
OUT
pins (9, 12, 14) must be externally tied together.
I
LIMIT
= 4A.
Output Power-Good = 3.0V.
*C4 is optional. See
"Applications Information."
C4*
0.022
m
F
C1
0.1
m
F
Logic
Controller
OVERCURRENT
ON/OFF
IN
10
MIC2044-1BTS
MIC39100-2.5BS
VBIAS
VIN
EN
/FAULT
ILIM
SLEW
2.5V
VOUT
PGREF
PWRGD
UVLOIN
GND
R1
20k
W
R2
294k
W
1%
R3
24.3k
W
1%
EN
IN
GND
OUT
C
LOAD
33
m
F
V
OUT
3.3V@ 3.5A
R4
20k
W
(OPEN)
+3.3V
Power
Supply
OUT1
OUT2
C3
4.7
m
F
C2
0.1
m
F
Features
30m
maximum on-resistance
0.8V to 5.5V operating range
Adjustable current limit
Up to 6A continuous output current
Short circuit protection
Very fast reaction to short circuits
Thermal shutdown
Adjustable slew-rate control
Circuit breaker mode (MIC2045)
Fault status flag
Power-Good detection
Undervoltage lockout
No reverse current flow through the switching MOSFET
when OFF or disabled
Low quiescent current
Applications
Docking stations
LAN servers
WAN switches
Hot swap board insertions
Notebook PCs
PDAs
Base stations
RAID controllers
USB hosts
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC2045-1BTS | 功能描述:IC DISTRIBUTION SW SGL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數:2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| MIC2045-1BTS TR | 功能描述:IC DISTRIBUTION SW SGL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數:2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| MIC2045-1YTS | 功能描述:電源開關 IC - USB 20 mohm Low Voltage Switch - Lead Free RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MIC2045-1YTS TR | 功能描述:電源開關 IC - USB 21 mohm Low Voltage Switch - Lead Free RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MIC2045-2BTS | 功能描述:IC DISTRIBUTION SW SGL 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關 系列:- 特色產品:XRP252 Switches 標準包裝:1 系列:- 類型:高端開關 輸出數:2 Rds（開）:140 毫歐 內部開關:是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商設備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
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