SANKEN SI-3010LLSL-TL

SI-3010LLSL
Data Sheet
27468.44
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1.5 A, Ultra-Low-Dropout, 1.1~3.3 V Regulator
OUT
1
ADJ
2
8
IN
7
IN
6
GND
5
GND
VR
BIAS
3
ENABLE
4
VS
Dwg. PK-012-1
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-3010LLSL voltage regulator offers
the reduced dropout voltage and low quiescent current essential for
improved efficiency. This device delivers a regulated output at up to
1.5 A. Integrated thermal and overcurrent protection enhance overall
system reliability.
An npn pass element provides a dropout voltage of less than 300 mV
at 1 A of load current. Regulator accuracy and excellent temperature
characteristics are provided by a bandgap reference. Low output
voltages eliminate the need for expensive PWM buck converters. The
low dropout voltage permits more efficient regulation before output
regulation is lost. 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. An LS-TTL/CMOScompatible input gives the designer complete control over power up,
standby, or power down.
This devices is supplied in a fully molded 8-lead miniature surfacemount package (tape and reel) with enhanced power-dissipating qualities.
It is rated for continuous operation between -30°C and +100°C.
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI . . . . . . . . . . . . .
10 V
Output Current, IO . . . . . . . . . . . 1.5 A*
Bias Voltage, VS . . . . . . . . . . . . .
10 V
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 temperature. Under any set of conditions, do not
exceed a junction temperature of +125°C.
FEATURES
■ 1.5 A Output Current
■ Adjustable 1.1 ~ 3.3 V Output Voltage
■ 0.3 V Maximum Dropout Voltage at IO = 1 A
■ Fast Transient Response
■ 1 µA Maximum Standby Current
■ Remote Voltage Sensing
■ Foldback Current Limiting
■ 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-3010LLSL-TL ,
where “-TL” indicates tape and reel..
Sanken Power Devices
from Allegro MicroSystems
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
FUNCTIONAL BLOCK DIAGRAM
Allowable Package Power Dissipation
Recommended Operating Conditions
DC Input Voltage
Adjustable Output Volt. Range
DC Output Current
DC Bias Voltage
Operating Junction Temp.
Min
1.4
1.1
0
3.3
-20
Max
3.6
3.3
1.5
5.5
+100
Units
V
V
A
V
°C
Leads 7 and 8 are soldered to
the PCB copper area and
provide heat sinking of the pass
transistor.
This data sheet is based on Sanken data sheet SSJ-02412.
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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
Copyright © 2004 Allegro MicroSystems, Inc.
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
ELECTRICAL CHARACTERISTICS at TA = +25°C, VI = 1.8 V, VO = 1.5 V adjusted, VS = 3.3 V, VE = 2 V (unless
otherwise noted).
Limits
Characteristic
Symbol
Output Voltage
VO
VO(off)
Test Conditions
Min.
Typ.
Max.
Units
VI = VO(nom) + 1 V, IO = 10 mA
—
VO(nom)
—
V
VE = 0 V
—
—
0.5
V
—
±0.2
—
mV/°C
Output Volt. Temp. Coeff.
aVO
0°C ≤ TJ ≤ 100°C
Internal Reference Voltage
Vref
IO = 10 mA
Output Short-Circuit Current
IOM
see note
1.6
—
—
A
0.980
1.000 1.020
V
Line Regulation
∆VO(∆VI)
VI = 1.7 ~ 2.5 V, IO = 10 mA
—
—
10
mV
Load Regulation
∆VO(∆IO)
VI = 1.8 V, IO = 0 A ~ 1.0 A
—
—
30
mV
Dropout Voltage
VImin - VO
IO = 1.0 A
—
—
0.3
V
IO = 0 mA, VE = 2.0 V
—
500
800
µA
VE = 0 V
—
—
1.0
µA
VEH
Output ON
2.0
—
—
V
VEL
Output OFF
—
—
0.8
V
IEH
VE = 2.7 V
—
—
50
µA
IEL
VE = 0 V
—
—
10
µA
100 Hz ≤ f ≤ 120 Hz
—
60
—
dB
135
152
—
°C
Ground Terminal Current
Enable Input Voltage
Enable Input Current
Ripple Rejection Ratio
Thermal Shutdown
IGND
PSRR
TJ
Typical values are given for circuit design information only.
Note: Output short-circuit current is at point where output voltage has decreased 5% below VO(nom).
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
TYPICAL CHARACTERISTICS
(VO = 1.5 V adjusted, VI = 1.8 V, VS = 3.3 V, TA = 25°C)
Dropout Voltage
Low-Voltage Behavior
Overcurrent Protection
Input Line Regulation
Bias Line Regulation
Load Regulation
ENABLE Control Voltage
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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
APPLICATIONS INFORMATION
Input Capacitor (CI, 0.1 µF to 10 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 designed for use with a very low ESR output capacitor such
as a ceramic capacitor. Output oscillation may occur with
an ESR greater than 500 mΩ.
Output Voltage Adjustable Resistors (R1 and R2).
The output voltage can be adjusted by R1 and R2. 10 kΩ
or 11 kΩ for R2 is recommended.
R1 = (VO – Vref)/(Vref/R2)
Heat Radiation and Reliability. The reliability of the
device is directly related to the junction temperature (TJ) in
its operation. Accordingly, careful consideration should be
given to heat dissipation.
The inner frame on which the pass transistor is mounted is
connected to terminals 7 and 8. Therefore, it is very
effective for heat radiation to enlarge the copper area that is
connected to these terminals. The graph illustrates the
effect of the copper area on the junction-to-ambient thermal
resistance (RθJA).
Soft-Start Capacitor (CSS). This capacitor between VO
and ADJ will set up starting time.
ENABLE Input. The ENABLE (control) input features
an internal pull-down resistor. Leaving this input open
causes the output to turn off.
Determination of DC Input Voltage. The minimum
input voltage VI(min) should be higher than the sum of the
fixed output voltage and the maximum rated dropout
voltage.
Overcurrent Protection. The SI-3000LLSL series has
a built-in fold-back type overcurrent protection circuit,
which limits the output current at a start-up mode. It thus
cannot be used in applications that require current at the
start-up mode such as:
(1) constant-current load,
(2) power supply with positive and negative outputs to
common load (a center-tap type power supply), or
(3) raising the output voltage by putting a diode or a
resistor between the device ground and system ground.
Thermal Protection. Circuitry turns off the pass
transistor when the junction temperature rises above 135°C.
It is intended only to protect the device from failures due to
excessive junction temperatures and should not imply that
output short circuits or continuous overloads are permitted.
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The junction temperature (TJ) can be determined from
either of the following equations:
TJ = (PD × RθJA) + TA
or
TJ = (PD × RθJL) + TL
where PD = IO × (VI – VO),
TL is the temperature of lead 8, and
RθJL = 36°C/W.
Parallel Operation. Parallel operation to increase load
current is not permitted.
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
APPLICATIONS INFORMATION (cont.)
Typical Application.
Recommended Timing.
VI
VS
VE
VO
IO
TJ
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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
Dimensions in Millimeters
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.
2. Lead spacing tolerance is non-cumulative.
3. Leads 7 and 8 are internally connected together and provide heat sinking of the pass transistor.
4. Terminal finish: pure Sn (category e3)
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
Tape and Reel Dimensions in Millimeters
Tape Specifications
1. Material: conductive polystyrene.
2. Allowable camber: 1 mm/100 mm
maximum.
3. Surface resistance: 100 kΩ,
maximum (distance of ten pockets).
4. 1000 pieces per reel.
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115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
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SI-3010LLSL
1.5 A, Ultra-Low-Dropout,
1.1~3.3 V Regulator
The products described herein are manufactured in Japan by Sanken
Electric Co., Ltd. for sale by Allegro MicroSystems, Inc.
Sanken and Allegro reserve the right to make, from time to time, such
departures from the detail specifications as may be required to permit
improvements in the performance, reliability, or manufacturability of its
products. Therefore, the user is cautioned to verify that the information
in this publication is current before placing any order.
When using the products described herein, the applicability and
suitability of such products for the intended purpose shall be reviewed at
the users responsibility.
Although Sanken undertakes to enhance the quality and reliability of
its products, the occurrence of failure and defect of semiconductor
products at a certain rate is inevitable.
Users of Sanken products are requested to take, at their own risk,
preventative measures including safety design of the equipment or
systems against any possible injury, death, fires or damages to society
due to device failure or malfunction.
Sanken products listed in this publication are designed and intended
for use as components in general-purpose electronic equipment or
apparatus (home appliances, office equipment, telecommunication
equipment, measuring equipment, etc.). Their use in any application
requiring radiation hardness assurance (e.g., aerospace equipment) is
not supported.
When considering the use of Sanken products in applications where
higher reliability is required (transportation equipment and its control
systems or equipment, fire- or burglar-alarm systems, various safety
devices, etc.), contact a company sales representative to discuss and
obtain written confirmation of your specifications.
The use of Sanken products without the written consent of Sanken in
applications where extremely high reliability is required (aerospace
equipment, nuclear power-control stations, life-support systems, etc.) is
strictly prohibited.
The information included herein is believed to be accurate and
reliable. Application and operation examples described in this publication are given for reference only and Sanken and Allegro assume no
responsibility for any infringement of industrial property rights,
intellectual property rights, or any other rights of Sanken or Allegro or
any third party that may result from its use.
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