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PDF 3010KM Data sheet ( Hoja de datos )

Número de pieza 3010KM
Descripción SI-3010KM
Fabricantes Allegro MicroSystems 
Logotipo Allegro MicroSystems Logotipo



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LRinegeuarlators
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI . . . . . . . . . . . . . 35 V
Output Current, IO . . . . . . . . . . . . . 1 A*
Enable Input Voltage, VE . . . . . . . . . VI
Junction Temperature, TJ . . . . +125°C
Storage Temperature Range,
TS . . . . . . . . . . . . -30°C to +125°C
* Output current rating is limited by input
voltage, duty cycle, and ambient tempera-
ture. Under any set of conditions, do not
exceed a junction temperature of +125°C.
SI-3010KM
1 A, Low-Dropout, 1.0~16 V Regulator
Designed to meet the high-current requirements in industrial and
consumer applications; embedded core, memory, or logic supplies; TVs,
VCRs, and office equipment, the SI-3010KM voltage regulator offers
the reduced dropout voltage and low quiescent current essential for
improved efficiency. This device delivers a regulated output at up to
1 A. Integrated thermal and overcurrent protection enhance overall
system reliability. Devices with fixed output voltages are also available.
Quiescent current does not increase significantly as the dropout
voltage is approached, an ideal feature in standby/resume power systems
where data integrity is crucial. Regulator accuracy and excellent
temperature characteristics are provided by a bandgap reference. An
LS-TTL/CMOS-compatible input gives the designer complete control
over power up, standby, or power down. A pnp pass element provides a
dropout voltage of less than 600 mV at 1 A of load current. Low output
voltages eliminate the need for expensive PWM buck converters. The
low dropout voltage permits more efficient regulation before output
regulation is lost.
This device is supplied in a 5-lead TO-252 style surface-mount
plastic package with ground tab to provide a low-resistance path for
maximum heat dissipation.
FEATURES
1 A Output Current
0.6 V Maximum Dropout Voltage at IO = 1 A
Fast Transient Response
1 µA Maximum Standby Current
Adjustable 1.0 ~ 16 V Output Voltage
Remote Voltage Sensing
Foldback Current Limiting
Overvoltage Protection
Ground Tab for Superior Heat Dissipation
Thermal Protection
APPLICATIONS
TVs, VCRs, Electronic Games
Embedded Core, Memory, or Logic Supplies
Printers and Other Office Equipment
Industrial Machinery
Secondary-Side Stabilization of Multi-Output SMPS
Always order by complete part number, e.g., SI-3010KM-TL ,
where “-TL” indicates tape and reel.
Sanken Power Devices
from Allegro MicroSystems
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3010KM pdf
LRinegeuarlators
SI-3010KM
1 A, Low-Dropout,
1.0~16 V Regulator
TYPICAL CHARACTERISTICS (cont.)
(VI = 7 V, VO = 5.0 V adjusted, TA = 25°C)
Overvoltage Protection
GND Pin Current
APPLICATIONS INFORMATION
Input Capacitor (CI, 22 µF). This is necessary either
when the input line includes inductance or when the wiring
is long.
Output Capacitor (CO, 47 µF). This device is not
designed for a use with a very low ESR output capacitor
such as a ceramic capacitor. Output oscillation may occur
with that kind of capacitor. The recommended ESR is
0.2~2 at TA = 25°C.
Reverse-Bias Protection Diode (D1). Diode D1
provides reverse-bias protection between the input and
output. Sanken type SFPL-52 is recommended.
ENABLE Input. The ENABLE (control) input features
an internal pull-down resistor. Leaving this input open
causes the output to turn off.
Parallel Operation. Parallel operation to increase load
current is not permitted.
Output Voltage Adjustable Resistors (R1 and R2).
The output voltage is adjusted by R1 and R2. 10 kfor
R2 is recommended.
R1 = (VO – Vref)/(Vref/R2)
For an output voltage of 1.5 V or less, diode D1 can be
eliminated and add a 10 kresistor between ADJ and the
junction of R1 and R2.
www.allegromicro.com
5
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