ST1L05 STMicroelectronics, ST1L05 Datasheet - Page 15
ST1L05
Manufacturer Part Number
ST1L05
Description
Very low quiescent BiCMOS voltage regulator
Manufacturer
STMicroelectronics
Datasheet
1.ST1L05D.pdf
(24 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ST1L05APU33R
Manufacturer:
ON
Quantity:
20 000
ST1L05, ST1L05A, ST1L05B, ST1L05C, ST1L05D
Figure 26. Application schematic for the ST1L05B and ST1L05D
Figure 27. Application schematic for the ST1L05C
For the adjustable version, the output voltage can be adjusted from 1.22 V up to the input
voltage, minus the voltage drop across the PMOS (dropout voltage), by connecting a
resistor divider between the ADJ pin and the output, thus allowing remote voltage sensing.
The resistor divider should be selected using the following equation:
V
It is recommended to use resistors with values in the range of 10 kΩ to 100 kΩ. Lower
values can also be suitable, but will increase current consumption.
V
V
O
IN
IN
= V
ADJ
C
C
C
C
V
V
I
I
I
I
OFF ON
OFF ON
I
I
(1 + R
OFF ON
OFF ON
1
/ R
2
) with V
V
V
EN
EN
IN
IN
GND
GND
EN
EN
V
V
I
I
GND
GND
ADJ
Doc ID 14492 Rev 2
ST1L05B
ST1L05B
ST1L05D
ST1L05D
ST1L05C
ST1L05C
GND
GND
GND
GND
= 1.22 V (typ.)
V
V
O_SENSE
O_SENSE
ADJ
ADJ
V
V
V
V
OUT
OUT
PG
PG
O
O
R1
R1
R2
R2
C
C
Application information
O
O
V
V
O
O
C
C
O
O
V
V
OUT
OUT
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