ST1L02XX Datasheet, PDF (1/19 Pages) STMicroelectronics – Very low quiescent BiCMOS voltage regulator

ST1L02xx
Very low quiescent BiCMOS voltage regulator
Features
■ Fixed output voltage: 1.8 V, 2.5 V, 3.3 V (1.5 V,
under customer request)
■ Output voltage tolerance: ± 2 % at 25 °C
■ Output current capability: 1 A minimum
■ Very low quiescent current: max 500 µA over
temperature range
■ Typ. dropout 0.7 V (@ I_O = 1 A)
■ Stable with low ESR ceramic capacitors
■ Available with and without the external output
voltage sense pin
■ Thermal shutdown protection with hysteresis
■ Over current protection
■ Operating junction temperature range:
from 0 to 125 °C
Description
The ST1L02xx is a low drop linear voltage
regulator capable to supply up to 1 A output
current.
The output voltage is fixed to 3.3 V, but under
customer request, it’s possible to have also 1.5 V,
1.8 V and 2.5 V. Thanks to the BiCMOS
technology, the quiescent current is well
controlled and maintained below 650 µA over the
whole allowed junction temperature range.
The ST1L02xx is stable with low ESR output
ceramic capacitors.
DFN6D (3x3 mm)
Internal protection circuitry includes thermal
protection with hysteresis and over current
limiting.
The ST1L02xx is especially suitable for data
storage applications such as HDDs, where can be
used to supply the read channel and memory
chips requiring 3.3 V.
The regulator is available in the small and thin
DFN6D (3x3 mm) package.
Table 1. Device summary
Part numbers
ST1L02XX18
ST1L02XX25
ST1L02XX33
ST1L02XX
1. Only 3.3 V
Order codes
ST1L02PU18R
ST1L02PU25R
ST1L02PU33R
ST1L02PUR ⁽¹⁾
Package
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
March 2008
Rev 8
1/19
www.st.com
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