LD3985M47R集成电路IC

价格：

0.10

详细介绍
企业详情

品牌/商标	ST	型号/规格	LD3985M47R
封装	SOP/DIP	批号	10+
营销方式	库存	产品性质	热销
处理信号	模拟信号	制作工艺	半导体集成
导电类型	单极型	集成程度	小规模
规格尺寸	1（mm）	工作温度	-40~85（℃）
静态功耗	1（mW）	类型	其他IC

1/14October 2004
a73 INPUT VOLTAGE FROM 2.5V TO 6V
a73 STABLE WITH LOW ESR CERAMIC
CAPACITORS
a73 ULTRA LOW DROPOUT VOLTAGE (100mV
TYP. AT 150mA LOAD, 0.4mV TYP. AT 1mA
LOAD)
a73 VERY LOW QUIESCENT CURRENT (85?A
TYP. AT NO LOAD, 170?A TYP. AT 150mA
LOAD; MAX 1.5?A IN OFF MODE)
a73 GUARANTEED OUTPUT CURRENT UP TO
150mA
a73 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
a73 FAST TURN-ON TIME: TYP. 200?s [C
O
=1?F,
C
BYP
= 10nF AND I
O
=1mA]
a73 LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
a73 INTERNAL CURRENT AND THERMAL LIMIT
a73 OUTPUT LOW NOISE VOLTAGE 30?VRMS
OVER 10Hz to 100KHz
a73 S.V.R. OF 60dB AT 1KHz, 50dB AT 10KHz
a73 TEMPERATURE RANGE: -40°C TO 125°C
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)
TSOT23-5LSOT23-5L
Rev. 8
123