LP5910_17 Datasheet, PDF (1/29 Pages) Texas Instruments – 300-mA Low-Noise, Low-IQ LDO

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LP5910
SNVSA91D – SEPTEMBER 2015 – REVISED SEPTEMBER 2016
LP5910 300-mA Low-Noise, Low-I_Q 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 I_Q (Enabled, No Load): 12 µA
• Low Output-Voltage Noise: 12 µV_RMS
• Stable with Ceramic Input and Output Capacitors
• Thermal Overload Protection
• Short-Circuit Protection
• Reverse Current Protection
• Automatic Output Discharge for Fast Turnoff
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.
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
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
V_IN
IN
OUT
C_IN
LP5910
Enable
EN
GND
V_OUT
C_OUT
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.