This is information on a product in full production.
February 2014 DocID18103 Rev 5 1/18
LD39030SJ
300 mA low quiescent current
soft-start, low noise voltage regulator
Datasheet
-
production data
Features
• Input voltage from 1.5 to 5.5 V
• Ultra low dropout voltage (200 mV typ. at 300
mA load)
• Very low quiescent current (20 μA typ. at no
load, 40 μA typ. at 300 mA load, 1 μA max. in
off mode)
• Very low noise (30 μV
RMS
from 1 kHz to 100
kHz at V
OUT
= 1.8 V)
• Output voltage tolerance: ± 2.0 % @ 25 °C
• 300 mA guaranteed output current
• Wide range of output voltages available on
request: 0.8 V to 4.5 V with 100 mV step
• Logic-controlled electronic shutdown
• Compatible with ceramic capacitor C
OUT
= 1 μF
• Internal current and thermal limit
• Flip-chip 4 bumps 0.8 x 0.8 mm pitch 0.4 mm
• Internal soft-start (typ. 100 μs)
• Temperature range: - 40 °C to 125 °C
Applications
• Mobile phones
• Personal digital assistants (PDAs)
• Cordless phones and similar battery-powered
systems
• Digital still cameras.
Description
The LD39030SJ is a low noise voltage regulator
that provides 300 mA maximum current from an
input voltage in the 1.5 V to 5.5 V range, with a
typical dropout voltage of 200 mV. It is stabilized
with a ceramic capacitor on the output. The ultra
low drop voltage, low quiescent current, and low
noise features make it suitable for low power
battery-powered applications. Power supply
rejection is typically 62 dB at low frequencies and
starts to roll off at 10 kHz. An enable logic control
function puts the LD39030SJ in shutdown mode
allowing a total current consumption lower than
1 μA. The device also includes a short-circuit
constant current limiting and thermal protection.
Table 1. Device summary
Order codes Output voltages
LD39030SJ10R 1 V
LD39030SJ12R 1.2 V
LD39030SJ126R 1.26 V
LD39030SJ28R 2.8 V
LD39030SJ285R 2.85 V
LD39030SJ33R 3.3 V
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