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參數資料
| 型號： | MIC49500WR |
| 廠商： | MICREL INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 5A Dual Supply, Low Voltage, High Bandwidth LDO |
| 中文描述： | 0.9 V-1.8 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO7 |
| 封裝： | ROHS COMPLIANT, S-PAK-7 |
| 文件頁數： | 1/11頁 |
| 文件大小： | 233K |
| 代理商： | MIC49500WR |
MIC49500
5A Dual Supply, Low Voltage,
High Bandwidth LDO
General Description
The MIC49500 is an ultra-high-bandwidth, low-
dropout, 5.0A voltage regulator ideal for powering
core voltages of low-voltage microprocessors. The
MIC49500 implements a dual supply configuration
allowing for very low output impedance and very fast
transient response.
Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micrel.com
November 2005
M9999-110805
(408) 955-1690
The MIC49500 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 6V and the bias supply requires between
3V and 6V for proper operation. The MIC49500 can
regulate to an output voltage as low as 0.7V, making it
an ideal product for low-voltage to low-voltage
conversion.
The MIC49500 requires a minimum of output
capacitance for stability, working optimally with any
type of capacitor, including small ceramic capacitors.
Available in fixed output voltages from 0.9V to 1.8V
and adjustable output voltages down to 0.7V, the
MIC49500 comes in both 7-pin S-Pak and TO-263
packages. The MIC49500 is rated to the full operating
temperature range of -40°C to 125°C junction
temperature.
Features
Input voltage range:
–
V
IN
: 1.4V to 6V
–
V
BIAS
: 3.0V to 6V
Stable with 10μF ceramic output capacitor
+1.0% initial output tolerance
Maximum dropout (V
IN
– V
OUT
) is 500mV over
temperature
Adjustable output voltage down to 0.7V
Ultra Fast Transient Response (Up to 10MHz
bandwidth)
Excellent line and load regulation specifications
Logic controlled shutdown option
Thermal shutdown and current limit protection
Thin 7-pin S-Pak package
TO-263 7-pin package
–40
°
C to +125
°
C operating junction temperature
range
Applications
ASIC Core Voltage Regulator
PLD/FPGA Core Power Supply
Linear Point-of-Load Conversion
High Speed Post-Regulator
Typical Application
IN
BIAS
OUT
ADJ
GND
MIC49500WR
V
OUT
= 1.0V
C
= 10μF
Ceramic
V
BIAS
= 3.1V
V
IN
= 2.0V
C
= 1μF
Ceramic
C
= 1μF
Ceramic
R1
R2
Low Voltage,
Fast Transient Response Regulator
Load Transient
O
(
O
(
Time (10μs/div)
5A
0A
V
OUT
= 1.8V
V
IN
= 2.8V
V
BIAS
= 3.9V
C
OUT
= C
BIAS
= 10μF
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC49500WR TR | 功能描述:低壓差穩壓器 - LDO 5A LDO, Low Vin, Low Vout, Fast transient response, Cap stable (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 |
| MIC49500WR-TR | 功能描述:Linear Voltage Regulator IC Positive Adjustable 1 Output 0.7 V ~ 6 V 5A S-PAK-7 制造商:microchip technology 系列:- 包裝:剪切帶（CT） 零件狀態:有效 穩壓器拓撲:正，可調式 電壓 - 輸出:0.7 V ~ 6 V 電流 - 輸出:5A 電壓 - 跌落（典型值）:0.29V @ 5A 穩壓器數:1 電壓 - 輸入:1.4 V ~ 6 V 電流 - 限制（最小值）:5.5A 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SPak-7（7 引線 + 接片） 供應商器件封裝:S-PAK-7 標準包裝:1 |
| MIC49500WU | 功能描述:低壓差穩壓器 - LDO 5A LDO, Low Vin, Low Vout, Fast transient response, Cap stable (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 |
| MIC49500WU TR | 功能描述:低壓差穩壓器 - LDO 5A LDO, Low Vin, Low Vout, Fast transient response, Cap stable (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 |
| MIC-5 | 功能描述:保險絲 250VAC 5A Fast Acting Indicating RoHS:否 制造商:Littelfuse 產品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險絲類型:Fast Acting 保險絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風格: 端接類型:SMD/SMT 系列:485 |
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