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參數資料
| 型號： | MIC49300BR |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 3.0A LOW VOLTAGE LDO REGULATOR W/DUAL INPUT VOLTAGES |
| 中文描述： | 0.9 V-5 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PSSO5 |
| 封裝： | SPAK-5 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 68K |
| 代理商： | MIC49300BR |
October 2003
1
MIC49300
MIC49300
Micrel
MIC49300
3.0A Low Voltage LDO Regulator w/Dual Input Voltages
General Description
The MIC49300 is a high-bandwidth, low-dropout, 3.0A volt-
age regulator ideal for powering core voltages of low-power
microprocessors. The MIC49300 implements a dual supply
configuration allowing for very low output impedance and
very fast transient response.
The MIC49300 requires a bias input supply and a main input
supply, allowing for ultra-low input voltages on the main
supply rail. The input supply operates from 1.4V to 6.5V and
the bias supply requires between 3V and 6.5V for proper
operation. The MIC49300 offers fixed output voltages from
0.9V to 1.8V and adjustable output voltages down to 0.9V.
The MIC49300 requires a minimum of output capacitance for
stability, working optimally with small ceramic capacitors.
The MIC49300 is available in a 5-pin S-Pak. It operates over
a junction temperature range of –40
°
C to +125
°
C.
Typical Application
MIC49300BR
IN
GND
C
=
10
μ
F
Ceramic
BIAS
OUT
C
BIAS
= 1
μ
F
V
OUT
= 1.0V
V
IN
= 1.5V
V
BIAS
= 3.3V
ADJ
C
= 1
μ
F
Ceramic
R1
R2
Low Voltage,
Fast Transient Response Regulator
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
Load Transient Response
TIME (20
μ
s/div.)
V
O
2
I
O
2
V
BIAS
= 5V
V
IN
= 2.5V
V
OUT
= 1.8V
C
OUT
= 10
μ
F Ceramic
Features
Input Voltage Range:
V
IN
: 1.4V to 6.5V
V
BIAS
: 3.0V to 6.5V
Stable with 1
μ
F ceramic capacitor
±
1% initial tolerance
Maximum dropout voltage (V
IN
-V
OUT
) of 500mV over
temperature
Adjustable output voltage down to 0.9V
Ultra fast transient response (Up to 10MHz bandwidth)
Excellent line and load regulation specifications
Logic controlled shutdown option
Thermal shutdown and current limit protection
Power S-Pak package
Junction temperature range: –40
°
C to 125
°
C
Applications
Graphics processors
PC Add-In Cards
Microprocessor core voltage supply
Low voltage digital ICs
High Efficiency Linear power supplies
SMPS post regulators
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| MIC49500-0.9WU | 5A Dual Supply, Low Voltage, High Bandwidth LDO |
| MIC49500-1.2WR | 5A Dual Supply, Low Voltage, High Bandwidth LDO |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC49300BR TR | 功能描述:IC REG LDO ADJ 3A SPAK-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩壓器數量:1 電流 - 輸出:80mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC49300BU | 功能描述:IC REG LDO ADJ 3A TO-263 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩壓器數量:1 電流 - 輸出:80mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC49300BU TR | 功能描述:IC REG LDO ADJ 3A TO-263 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:3,000 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.3V @ 80mA 穩壓器數量:1 電流 - 輸出:80mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| MIC49300WR | 功能描述:低壓差穩壓器 - LDO Dual Supply, LV 3.0A LDO(ROHS Compliant) RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MIC49300WR TR | 功能描述:低壓差穩壓器 - LDO Dual Supply, LV 3.0A LDO(ROHS Compliant) RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調節:0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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