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SI91871DMP-15-E3

Description
IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.57 V DROPOUT, PDSO5, POWER PACK, LEAD FREE, MLP33-5, Fixed Positive Single Output LDO Regulator
CategoryPower/power management    The power supply circuit   
File Size131KB,9 Pages
ManufacturerVishay
Websitehttp://www.vishay.com
Environmental Compliance  
Download Datasheet Parametric View All

SI91871DMP-15-E3 Overview

IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.57 V DROPOUT, PDSO5, POWER PACK, LEAD FREE, MLP33-5, Fixed Positive Single Output LDO Regulator

SI91871DMP-15-E3 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSON, FL8,.12,25
Contacts5
Reach Compliance Codeunknown
ECCN codeEAR99
AdjustabilityFIXED
Maximum drop-back voltage 10.57 V
Nominal dropback voltage 10.4 V
Maximum absolute input voltage6.5 V
Maximum input voltage6 V
Minimum input voltage2 V
JESD-30 codeR-PDSO-N5
JESD-609 codee3
Maximum grid adjustment rate0.00324%
Humidity sensitivity level1
Number of functions1
Output times1
Number of terminals5
Working temperatureTJ-Max125 °C
Working temperature TJ-Min-40 °C
Maximum output current 10.3 A
Maximum output voltage 11.5225 V
Minimum output voltage 11.4775 V
Nominal output voltage 11.5 V
Package body materialPLASTIC/EPOXY
encapsulated codeSON
Encapsulate equivalent codeFL8,.12,25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
method of packingTAPE AND REEL
Peak Reflow Temperature (Celsius)250
Certification statusNot Qualified
Regulator typeFIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mountYES
technologyCMOS
Terminal surfaceMATTE TIN
Terminal formNO LEAD
Terminal pitch0.635 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
Maximum voltage tolerance3%
Base Number Matches1
Si91871
Vishay Siliconix
300-mA Ultra Low-Noise LDO Regulator
With Discharge Option
FEATURES
D
D
D
D
D
D
D
D
D
D
D
D
D
Ultra Low Dropout—300 mV at 300-mA Load
Ultra Low Noise—30
mV
RMS
(10-Hz to 100-kHz)
Shutdown Control
130-mA Ground Current at 300-mA Load
1.5% Guaranteed Output Voltage Accuracy
400-mA Peak Output Current Capability
Uses Low ESR Ceramic Capacitors
Fast Start-Up (50
ms)
Fast Line and Load Transient Response (v 30
ms)
1-mA Maximum Shutdown Current
Output Current Limit
Reverse Battery Protection
Built-in Short Circuit and Thermal Protection
D
Output, Auto-Discharge In Shutdown Mode
D
Fixed 1.2, 1.5, 1.8, 2.5, 2.6, 2.8, 3.0, 3.3, 5.0-V Output
Voltage Options
D
MLP33-5 PowerPAKr Package
Available
APPLICATIONS
D
Cellular Phones, Wireless Handsets
D
Noise-Sensitive Electronic Systems, Laptop and
Palmtop Computers
D
PDAs
D
Pagers
D
Digital Cameras
D
MP3 Player
D
Wireless Modem
DESCRIPTION
The Si91871 is a 300-mA CMOS LDO (low dropout) voltage
regulator. It is the perfect choice for low voltage, low power
applications. An ultra low ground current makes this part
attractive for battery operated power systems. The Si91871
also offers ultra low dropout voltage to prolong battery life in
portable electronics. Systems requiring a quiet voltage
source, such as RF applications, will benefit from the
Si91871’s ultra low output noise. An external noise bypass
capacitor connected to the device’s BP pin can further reduce
the noise level. The Si91871 is designed to maintain regulation
while delivering 400-mA peak current, making it ideal for
systems that have a high surge current upon turn-on.
For better transient response and regulation, an active
pull-down circuit is built into the Si91871 to clamp the output
voltage when it rises beyond normal regulation. The Si91871
automatically discharges the output voltage by connecting the
output to ground through a 100-W n-channel MOSFET when
the device is put in shutdown mode.
The Si91871 features reverse battery protection to limit
reverse current flow to approximately 1-mA in the event
reversed battery is applied at the input, thus preventing
damage to the IC.
The Si91871 is available in both the standard and
lead (Pb)-free 5-pin MLP33 PowerPAK packages and is
specified to operate over the industrial temperature range of
−40_C
to 85_.
TYPICAL APPLICATION CIRCUIT
Si91871
V
IN
2.2
mF
SD
SD
V
IN
V
OUT
V
OUT
2.2
mF
GND
BP
10 nF
MLP33-5
Document Number: 72012
S-50955—Rev. E, 16-May-05
www.vishay.com
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