ST1L05 STMicroelectronics, ST1L05 Datasheet - Page 14

• Manufacturer Part Number: ST1L05
• Description: Very low quiescent BiCMOS voltage regulator
• Manufacturer: STMicroelectronics

Specifications of ST1L05

• Fixed Output Voltage: 1.8 V, 2.5 V, 3.3 V and ADJ
• Output Voltage Tolerance: ± 2% at 25 °C
• Output Current Capability: 1.3 A
• Very Low Quiescent Current: max 650 μA over temperature range
• Operating Junction Temperature Range: from 0 to 125 °C

Application information
6
Figure 24. Application schematic for the ST1L05
Figure 25. Application schematic for the ST1L05A
14/24
Application information
The ST1L05 is a low dropout linear regulator. It provides up to 1.3 A with a low 300 mV
dropout. The input voltage range is from 3 V to 5.5 V. The device is available in fixed and
adjustable output versions.
The regulator is equipped with internal protection circuitry, such as short-circuit current
limiting and thermal protection.
The regulator is designed to be stable with ceramic capacitors on the input and the output.
The expected values of the input and output ceramic capacitors are from 1 µF to 22 µF with
4.7 µF typical. The input capacitor must be connected within 0.5 inches of the V
The output capacitor must also be connected within 0.5 inches of output pin. There is no
upper limit to the value of the input capacitor.
Figure
the
V
V
V
V
IN
IN
24,
IN
IN
Figure
C
C
C
C
I
I
I
I
25,
Figure 26
V
V
V
V
IN
IN
GND
GND
IN
IN
ST1L05A
ST1L05A
ST1L05
ST1L05
Doc ID 14492 Rev 2
and
GND
GND
GND
GND
Figure 27
V
V
ST1L05, ST1L05A, ST1L05B, ST1L05C, ST1L05D
O_SENSE
O_SENSE
GND
GND
V
V
V
V
OUT
OUT
OUT
OUT
illustrate the typical application schematics:
C
C
C
C
V
V
V
V
O
O
O
O
OUT
OUT
OUT
OUT
I
terminal.