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PDF STL6341 Data sheet ( Hoja de datos )
| Número de pieza | STL6341 | |
| Descripción | 100mA Ultra Low Quiescent Current Linear Regulator | |
| Fabricantes | Semtron | |
| Logotipo |  |
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STL6341
100mA Ultra Low Quiescent Current Linear Regulator
■DESCRIPTION
■FEATURE
The STL6341 series is a positive voltage
regulator with high accuracy output voltage and
ultra-low quiescent current which is typically 1.0μA.
The device is ideal for battery powered handheld
equipments which require low quiescent current.
The STL6341 contains a bandgap voltage
reference, an error amplifier, a P-channel pass
transistor, and a resistor-divider for setting output
voltage. The output voltage is fixed with high
accuracy by advanced trimming technology.
The STL6341 has been designed to be used
with low cost ceramic capacitors and requires a
minimum output capacitor of 1.0μF. The devices
are available in SOT-23, SOT-89.
Low Current Consumption: 1μA
Maximum Output Current: 100mA
Low Dropout Voltage: 800mV@50mA
Operating Voltage Range: 2.5V to 18V
Output Voltage Range: 1.5V to 5.0V
Thermal Overload Shutdown Protection
Low ESR Capacitor Compatible
■APPLICATIONS
Battery Powered Equipment.
Precision Voltage References
Portable Communication Devices
Hand Held Electronics
Wireiess Communication Systems
■PIN CONFIGURATION
VOUT
VIN
TOP VIEW
SOT-89
GND
GND
VOUT
TOP VIEW
SOT-23
VIN
■PART MARKING INFORMATION
STL6341-XX X-XX X
Lead Plating Code
Handling Code
Package Code
Voltage Code
Lead Plating Code
G : Lead-free product.
This product is RoHS compliant
Handling Code
TR : Tape&Reel TB : Tape&Box
Package Code
K : SOT-89
S : SOT-23
Voltage Code
XX : 15 / 18 / 25 / 28 / 30 / 33 / 50
STL6341 Rev.1.2
Copyright © Semtron Microtech Corp.
1
www.semtron-micro.com
1 page  
■APPLICATION CIRCUITS
◆Current Boost Circuit
The figure below shows a boost circuit for
increasing the output current. Output current 60mA
or more can be obtained by this circuit.
STL6341
◆Constant Current Source
The STL6341 Series can be used as a constant
current source within allowable current limit.
STL6341
STL6341
Short-Circuit protection of Tr1 can be
implemented by adding the sense resistor RS and
the PNP transistor Tr2 as shown below.
STL6341
The current limit of the protection circuit is:
ILIMIT=VBE2/RS
◆Voltage Boost Circuit
If the output voltage you need is greater than 5.0V,
the circuit in the figure below will increase output
voltages easily.
STL6341
The output current is obtained by:
IOUT=VSET/RA + ISS
◆Dual Supply
A dual supply can be constructed with two
STL6341 series as show in the figure below. This
circuit provides two outputs (5V and 8V) with the
STL6341 -30 and the STL6341-50. As the
resistance R lets the quiescent current of IC1 pass.
R is unnecessary if the minimum output current of
IC2 is more than the IC1 quiescent current. D is a
protection diode in case VOUT2 becomes larger than
VOUT1.
STL6341
STL6341
The output voltage is obtained by:
VOUT= VSET x (1+R2/R1)+ISS x R2
Where VSET is the preset output voltage of
STL6341 and ISS is the quiescent current. Because
of the low quiescent current, the resistor values, R1
and R2, can be set as large as several hundreds kΩ
to lower the power consumption of the whole system.
STL6341 Rev.1.2
Copyright © Semtron Microtech Corp.
6
www.semtron-micro.com
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet STL6341.PDF ] | |
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