Low-noise LDO. LP5910 Datasheet

LP5910 LDO. Datasheet pdf. Equivalent

Part LP5910
Description Low-noise LDO
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LP5910
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LP5910
SNVSA91E – SEPTEMBER 2015 – REVISED JULY 2017
LP5910 300-mA Low-Noise, Low-IQ LDO
1 Features
1 Input Voltage Range: 1.3 V to 3.3 V
• Output Voltage Range: 0.8 V to 2.3 V
• Output Current: 300 mA
• PSRR: 75 dB at 1 kHz
• Output Voltage Tolerance: ±2%
• Low Dropout: 120 mV (Typical)
• Very Low IQ (Enabled, No Load): 12 µA
• Low Output-Voltage Noise: 12 µVRMS
• Stable with Ceramic Input and Output Capacitors
• Thermal Overload Protection
• Short-Circuit Protection
• Reverse Current Protection
• Automatic Output Discharge for Fast Turnoff
• Create a Custom Design Using the LP5910 With
the WEBENCH® Power Designer
2 Applications
• Mobile Phones, Tablets
• Digital Cameras and Audio Devices
• Portable and Battery-Powered Equipment
• Portable Medical Equipment
• Virtual Reality
• RF, PLL, VCO, and Clock Power Supplies
• IP Cameras
3 Description
The LP5910 is a low-noise LDO that can supply up to
300 mA of output current. Designed to meet the
requirements of RF and analog circuits, this device
provides low noise, high PSRR, low quiescent
current, and superior line transient and load transient
response. Using new innovative design techniques
the LP5910 offers class-leading noise performance
without a noise bypass capacitor and with the option
for remote output capacitor placement.
The device contains a reverse current protection
circuit that prevents a reverse current flow through
the LDO to the IN pin when the input voltage is lower
than the output voltage.
When the Enable (EN) pin is low, and the output is in
an OFF state, an automatic output discharge circuit
discharges the output capacitance for fast turnoff.
With its low input and low output voltage range the
LP5910 is well-suited as a post DC-DC regulator
(post BUCK regulator) or for single- or dual-cell
applications.
The device is designed to work with a 1-μF input and
a 1-μF output ceramic capacitor. A separate noise
bypass capacitor is not required.
This device is available with fixed output voltages
from 0.8 V to 2.3 V in 25-mV steps. Contact Texas
Instruments Sales for specific voltage option needs.
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE
LP5910
WSON (6) 2.00 mm × 2.00 mm (NOM)
DSBGA (4) 0.742 mm × 0.742 mm (MAX)
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
VIN
IN
OUT
CIN
LP5910
Enable
EN
GND
VOUT
COUT
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



LP5910
LP5910
SNVSA91E – SEPTEMBER 2015 – REVISED JULY 2017
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Detailed Description ............................................ 11
7.1 Overview ................................................................. 11
7.2 Functional Block Diagram ....................................... 11
7.3 Feature Description................................................. 11
7.4 Device Functional Modes........................................ 12
8 Applications and Implementation ...................... 13
8.1 Application Information............................................ 13
8.2 Typical Application .................................................. 13
9 Power Supply Recommendations...................... 17
10 Layout................................................................... 17
10.1 Layout Guidelines ................................................. 17
10.2 Layout Examples................................................... 17
10.3 DSBGA Mounting.................................................. 18
10.4 DSBGA Light Sensitivity ....................................... 18
11 Device and Documentation Support ................. 19
11.1 Documentation Support ........................................ 19
11.2 Receiving Notification of Documentation Updates 19
11.3 Community Resources.......................................... 19
11.4 Trademarks ........................................................... 19
11.5 Electrostatic Discharge Caution ............................ 19
11.6 Glossary ................................................................ 20
12 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (August 2016) to Revision E
Page
• Added new package, YKA0004-C01 associated with orderables LP5910-1.1BYKAR and LP5910-1.1BYKAT; added
links for WEBENCH................................................................................................................................................................ 1
Changes from Revision C (June 2016) to Revision D
Page
• Changed wording of data sheet title and list of Applications ................................................................................................. 1
• Changed "Very Low Noise Without a Noise Bypass Capacitor: 12 µVRMS Typical" to "Low Output-Voltage Noise: 12
µVRMS"..................................................................................................................................................................................... 1
• Changed wording of first sentence of Description ................................................................................................................. 1
Changes from Revision B (October 2015) to Revision C
Page
• Changed "linear regulator" to "LDO" on page 1 .................................................................................................................... 1
Changes from Revision A (October 2015) to Revision B
Page
• Changed "... = 2.3 V" to "... 2.3 V" in Dropout Voltage rows; added DSBGA only; also added new rows in Dropout
Voltage for WSON package. .................................................................................................................................................. 5
Changes from Original (September 2015) to Revision A
Page
• Changed device data sheet from product preview to production data status; added icon for reference design to top
navigators .............................................................................................................................................................................. 1
2
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