LDLN025
250 mA ultra low noise LDO
Datasheet - production data
Applications
Smartphones/tablets
Image sensors
Instrumentation
VCO and RF modules
Description
The LDLN025 is a 250 mA low-dropout voltage
regulator, able to work with an input voltage
range from 1.5 V to 5.5 V.
Features
Ultra low output noise: 6.5 μV
RMS
Operating input voltage range: 1.5 V to 5.5 V
Output current up to 250 mA
Very low quiescent current: 12 μA at no-load
Controlled I
q
in dropout condition
Very low-dropout voltage: 250 mV at
250 mA
Very high PSRR: 80 dB@100 Hz,
60 dB@100 kHz
Output voltage accuracy: 2 % across line,
load and temperature
Output voltage versions: from 1 V to 5 V,
with 50 mV step
Logic-controlled electronic shutdown
Output discharge feature
Internal soft-start
Overcurrent and thermal protections
Temperature range: from -40 °C to +125 °C
Packages: Flip-Chip4, DFN4-1x1, SOT23-5L
The typical dropout voltage at 250 mA load is
120 mV.
The very low quiescent current, which is just
12 μA at no-load, extends battery-life of
applications requiring very long standby time.
Thanks to its ultra low noise value and high
PSRR, the LDLN025 provides a very clean
output, suitable for ultra-sensitive loads. It is
stable with ceramic capacitors.
The enable logic control function puts the device
into shutdown mode allowing a total current
consumption lower than 1 μA.
The device also includes short-circuit and thermal
protection.
Typical applications are noise sensitive loads
such as ADC, VCO in mobile phones and tablets,
wireless LAN devices. The LDLN025 is designed
to keep the quiescent current under control and
at a low value also during dropout operation,
extending the operating time of battery-powered
devices.
Several small package options are available.
July 2017
DocID029566 Rev 5
1/26
www.st.com
This is information on a product in full production.
Contents
LDLN025
Contents
1
2
3
4
5
6
7
Block diagram.................................................................................. 3
Pin configuration ............................................................................. 4
Typical application diagram ........................................................... 5
Maximum ratings ............................................................................. 6
Electrical characteristics ................................................................ 7
Typical characteristics .................................................................. 10
Package information ..................................................................... 15
7.1
7.2
7.3
7.4
7.5
Flip-Chip4 package information....................................................... 16
Flip-Chip4 packing information ........................................................ 18
DFN4-1x1 package information....................................................... 19
DFN4-1x1 packing information ........................................................ 20
SOT23-5L package information ...................................................... 21
Marking information ......................................................................... 24
8
9
Ordering information..................................................................... 23
8.1
Revision history ............................................................................ 25
2/26
DocID029566 Rev 5
51单片机
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