Document
LD39030
300 mA very low quiescent current linear regulator IC
Datasheet - production data
Features
Input voltage from 1.5 to 5.5 V Ultra low dropout voltage (300 mV typ. at
300 mA load) Very low quiescent current (20 µA typ at no
load, 0.03 µA typ in off mode) Output voltage tolerance: ±0.5 % (A version)
or ± 2.0 % @ 25 °C (standard version) 300 mA guaranteed output current High PSRR (80 dB@1 kHz, 50 db@100
kHz) Wide range of output voltages available on
request: from 0.8 V up to 5.0 V in 50 mV step Logic-controlled electronic shutdown Internal soft-start Optional output voltage discharge feature Compatible with ceramic capacitor COUT = 0.47 µF Internal constant current and thermal protections Available in DFN4 1x1 Operating temperature range: -40 °C to 125 °C
Applications
Mobile phones Tablets Digital still cameras (DSC) Cordless phones and similar battery-
powered systems Portable media players
Description
The LD39030 high accuracy voltage regulator provides 300 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 300 mV.
It is available in DFN4 1x1 package, allowing the maximum space saving.
The device is stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current and low noise features, together with the internal soft-start circuit, make the LD39030 suitable for low power batteryoperated applications.
An enable logic control function puts the LD39030 in shutdown mode allowing a total current consumption lower than 0.1 µA. Constant current and thermal protection are provided.
November 2015
DocID028649 Rev 1
This is information on a product in full production.
1/21
www.st.com
Contents
Contents
LD39030
1 Diagram............................................................................................ 3
2 Pin configuration ............................................................................. 4
3 Typical application .......................................................................... 5
4 Maximum ratings ............................................................................. 6
5 Electrical characteristics ................................................................ 7
6 Application information .................................................................. 9
6.1 Soft start function .............................................................................. 9 6.2 Output discharge function ................................................................. 9 6.3 Input and output capacitors ............................................................... 9
7 Typical characteristics.................................................................. 10
8 Package information ..................................................................... 15
8.1 DFN4 1x1 package information....................................................... 16
9 Ordering information....................