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參數資料
| 型號： | LD3985 |
| 廠商： | 意法半導體 |
| 英文描述： | ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE |
| 中文描述： | 超低壓降低噪聲BICMOS工藝電壓調節器兼容低ESR電容 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 393K |
| 代理商： | LD3985 |
1/14
October 2004
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INPUT VOLTAGE FROM 2.5V TO 6V
STABLE WITH LOW ESR CERAMIC
CAPACITORS
ULTRA LOW DROPOUT VOLTAGE (100mV
TYP. AT 150mA LOAD, 0.4mV TYP. AT 1mA
LOAD)
VERY LOW QUIESCENT CURRENT (85μA
TYP. AT NO LOAD, 170μA TYP. AT 150mA
LOAD; MAX 1.5μA IN OFF MODE)
GUARANTEED OUTPUT CURRENT UP TO
150mA
WIDE RANGE OF OUTPUT VOLTAGE: 1.2V;
1.22V; 1.25V; 1.35V; 1.5V; 1.8V; 2V; 2.1V;
2.2V; 2.4V; 2.5V; 2.6V; 2.7V; 2.8V; 2.85V;
2.9V; 3V; 3.1V; 3.2V; 3.3V; 4.7V; 5V
FAST TURN-ON TIME: TYP. 200μs [C
O
=1μF,
C
BYP
= 10nF AND I
O
=1mA]
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
INTERNAL CURRENT AND THERMAL LIMIT
OUTPUT LOW NOISE VOLTAGE 30μVRMS
OVER 10Hz to 100KHz
S.V.R. OF 60dB AT 1KHz, 50dB AT 10KHz
TEMPERATURE RANGE: -40°C TO 125°C
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DESCRIPTION
The LD3985 provides up to 150mA, from 2.5V to
6V input voltage.
The ultra low drop-voltage, low quiescent current
and low noise make it suitable for low power
applications and in battery powered systems.
Regulator ground current increases only slightly in
dropout, further prolonging the battery life. Power
supply rejection is better than 60 dB at low
frequencies and starts to roll off at 10KHz. High
power supply rejection is maintained down to low
input voltage levels common to battery operated
circuits. Shutdown Logic Control function is
available, this means that when the device is used
as local regulator, it is possible to put a part of the
board in standby, decreasing the total power
consumption. The LD3985 is designed to work
with low ESR ceramic capacitors. Typical
applications are in mobile phone and similar
battery powered wireless systems.
LD3985
SERIES
ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE
REGULATORS LOW ESR CAPACITORS COMPATIBLE
Figure 1: Schematic Diagram
Flip-Chip
(1.57x1.22)
TSOT23-5L
SOT23-5L
Rev. 8
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相關代理商/技術參數 |
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| LD3985G122R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Ultra low drop-low noise BiCMOS voltage regulators low ESR capacitors compatible |
| LD3985G125R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE |
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| LD3985G135R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE |
| LD3985G15R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE |
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