LDR1833_08 Datasheet, PDF (1/16 Pages) STMicroelectronics – Very low drop dual voltage regulator

LDR1833
LDR2533
Very low drop dual voltage regulator
Features
■ Output current 1 up to 500 mA
■ Output current 2 up to 1.0 A
■ Low dropout voltage 1 (0.3 V @ I_O = 500 mA)
■ Low dropout voltage 2 (0.4 V @ I_O = 1 A)
■ Very low supply current (typ. 50 µA in OFF
mode, 1.6 mA max in ON mode)
■ Logic-controlled electronic shutdown output
voltage availability for each regulator: 1.8 V,
2.5 V, 3.3 V
■ Internal current and thermal limit
■ Stable with low value (min. 4.7 µF) and low
ESR output capacitors
■ Supply voltage rejection: 70 dB (typ.)
■ Temperature range (- 40 °C to 125 °C)
Description
The LDR1833, LDR2533 is a very low drop dual
voltage regulator available in PPAK. The very low
drop-voltage (0.5 V) and the very low supply
current make it particularly suitable for low noise
and low power applications such as PDA,
Microdrive and other data storage applications
while the used high voltage technology makes this
device suitable for consumer applications such as
Monitors and Set-top-box. For each V_O a
shutdown logic control function is available (TTL
compatible) to decrease the total power
consumption.
PPAK
Table 1. Device summary
Order codes
LDR1833PT-R
LDR2533PT-R
April 2008
Rev 3
Output voltages
V_O1
1.8 V
2.5 V
V_O2
3.3 V
3.3 V
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