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LD3985

Features: ` 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 (85A TYP. AT NO LOAD, 170A TYP. AT 150mA LOAD; MAX 1.5A IN OFF MODE)` GUARANTEED OUTPUT CURRENT UP TO 150mA` W...

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SeekIC No. : 004393031 Detail

LD3985: Features: ` 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 (85A TYP. ...

LD3985 Data Sheet

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Part Number:
LD3985
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

 ` 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 (85A TYP. AT NO LOAD, 170A TYP. AT 150mA LOAD; MAX 1.5A IN OFF MODE)
 ` GUARANTEED OUTPUT CURRENT UP TO 150mA
 ` WIDE RANGE OF OUTPUT VOLTAGE:
     1.25V; 1.35; 1.5; 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. 200s [CO=1F, CBYP= 10nF AND IO=1mA]
 ` LOGIC-CONTROLLED ELECTRONIC SHUTDOWN
 ` INTERNAL CURRENT AND THERMAL LIMIT
 ` OUTPUT LOW NOISE VOLTAGE 30VRMS OVER 10Hz to 100KHz
 ` S.V.R. OF 60dB AT 1KHz, 50dB AT 10KHz
 ` TEMPERATURE RANGE: -40°C TO 125°C


Pinout

Connection Diagram


Specifications

Symbol Parameter
Value
Unit
VI DC Input Voltage
-0.3 to 6 (*)
V
VO DC Output Voltage
-0.3 to VI+0.3
V
VINH INHIBIT Input Voltage
-0.3 to VI+0.3
V
IO Output Current
Internally limited
PD Power Dissipation
Internally limited
TSTG Storage Temperature Range
-65 to +150
Top Operating Junction Temperature Range
-40 to +125
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
(*) The input pin is able to withstand non repetitive spike of 6.5V for 200ms.


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 LD3985 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.




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