300mA Linear Regulator FS8853 low-dropout linear regulator that o

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300mA Linear Regulator FS8853 low-dropout linear regulator that o

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FS8853
300mA Linear Regulator
FS8853 low-dropout linear regulator that operations input voltage range from +2.5V +9.0V delivers 300mA output current. high-accuracy output voltage preset internally trimmed voltage 2.5V 3.3V. Other output voltages mask-optioned from 1.3V 4.5V with 100mV increment, except FS8853-29Cx which 2.85V output voltage. FS8853 consists 1.25V bandgap reference, error amplifier, P-channel pass transistor. Other features include short-circuit protection thermal shutdown protection. FS8853 devices available TO-92, SOT-89 SOT-23 packages.
Ordering Information
FS8853-xx
Package SOT-23 SOT-23 SOT-23 SOT-23 TO-92 TO-92 TO-92 TO-92 SOT-89 SOT-89 SOT-89 SOT-89 1.IN 1.GND 1.GND 1.OUT 1.IN 1.GND 1.OUT 1.GND 1.IN 1.GND 1.OUT 1.GND 2.GND 2.IN 2.OUT 2.GND 2.GND 2.IN 2.GND 2.OUT 2.GND 2.IN 2.GND 2.OUT 3.OUT 3.OUT 3.IN 3.IN 3.OUT 3.OUT 3.IN 3.IN 3.OUT 3.OUT 3.IN 3.IN
Temperature Range Commercial Standard Commercial Standard, Lead(Pb) Free Phosphorous(P) Free Package Output Voltage 1.3V 1.4V 1.5V 1.6V 1.7V 1.8V 1.9V 2.0V 2.1V 2.2V 2.3V 2.4V 2.5V 2.6V 2.7V 2.8V 2.85V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V 3.6V 3.7V 3.8V 3.9V 4.0V 4.1V 4.2V 4.3V 4.4V 4.5V
Features
dropout voltage 400mV 300mA (Typ.) ±35mV output voltage accuracy (VIN Preset 2.5V, 3.3V Mask options from 1.3V 4.5V Small output capacitor Output current limit Thermal overload shutdown protection TO-92, SOT-89 SOT-23 Package
Applications
Battery Powered Equipment Palmtops Portable Cameras Video Recorders Reference Voltage Sources Post Regulator Switching Power
Note Mask option output types available order only
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FS8853
300mA Linear Regulator
Configurations
Part FS8853 -xxxD
TO-92
Part
SOT-89
FS8853 -xxxK
FS8853 xxxxxxxx
FS8853 -xxxE
(BOTTOM VIEW)
FS8853 -xxxF FS8853 -xxxW
FS8853 -xxxL
FS8853 -xxxI FS8853 -xxxY
SOT-23
Part FS8853 -xxxA
3xxx
FS8853 -xxxB
FS8853 -xxxC FS8853 -xxxV
Package Marking Information
SOT-23 EXFS8853-33CC
TO-92 SOT-89 EXFS8853-33CL
FS8853 33CLxxxx
xxxxDate Code
PointLot Bottom PointYear week,
EXFS8853-33PC
EXFS8853-33PL
FS8853 33PLxxxx
xxxxDate Code
PointLot Bottom PointYear week, Digit with Underline Pb/P Free
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FS8853
300mA Linear Regulator
Description
Part FS8853-xxCA FS8853-xxCB FS8853-xxCC FS8853-xxCV FS8853-xxCD FS8853-xxCE FS8853-xxCF FS8853-xxCW FS8853-xxCK FS8853-xxCL FS8853-xxCI FS8853-xxCY Symbol Ground pin. Description
Regulator input pin.
Regulator output pin.
regulator input pin. Supply voltage range from 2.5V 9.0V. Bypass with capacitor GND. output voltage pin. Sources 300mA. Bypass with 3.3µF capacitor GND. provides reference voltages.
Functional Block Diagram
Current Limit
Shutdown Logic
Thermal Protection
1.25V Bandgap Reference
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FS8853
300mA Linear Regulator
Typical Application Circuit
FS8853
Absolute Maximum Ratings
Input voltage -10V Output current limit, I(LIMIT) 0.6A Continuous power dissipation, 100°C) SOT-23 0.31W SOT-89 0.55W TO-92 0.55W power dissipation values based condition that junction temperature ambient temperature difference 100°C. Junction Temperature, +155°C Storage temperature range, TSTG -55°C +150°C Operating junction temperature range -40°C +125°C Lead temperature (soldering, 10sec) 260°C
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, function operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability.
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FS8853
300mA Linear Regulator
Electrical Characteristics
(TA=25, unless otherwise noted.) Symbol VOUT Parameter Input Voltage Output Voltage Test Conditions VOUT VOUT VOUT+ 0.035 VOUT+ 0.042 VOUT=0V, VIN>VOUT+0.48V ILOAD=0mA 300mA, VIN=VOUT+0.48V IOUT=1mA IOUT=100mA IOUT=300mA VLINE VLOAD Line Regulation Load Regulation Output Noise Ripple Rejection Thermal Shutdown Temperature Thermal Shutdown Hysteresis Thermal Resistance VOUT+0.48V<VIN<9V, ILOAD=1mA IOUT=0mA 300mA F=1Hz 10KHz, COUT=3.3µF F=10KHz, COUT=3.3µF 0.01 SOT-23 SOT-89 TO-92 0.02 Unit %/mA µVRMS °C/W °C/W °C/W VOUTVIN=VOUT+0.48V, IOUT=1mA, VIN7V 0.035 VIN=VOUT+0.48V, IOUT=1mA, 7VVIN VOUT0.042 VIN>VOUT+0.48V, VIN7V VIN>VOUT+0.48V, 7VVIN9V
VOUT IMAX ILIMIT
Output Voltage Accuracy Maximum Load Current Current Limit Short-Circuit Current Ground Current
VDROP
Dropout Voltage
PSRR THYS
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FS8853
300mA Linear Regulator
Typical Operating Characteristics
OUTPUT VOLTAGE INPUT VOLTAGE
(CIN=1µF COUT=3.3µF, TA=+25, unless otherwise noted.)
GROUND CURRENT AMBIENT TEMPERATURE
OUTPUT VOLTAGE
GROUND CURRENT (µA)
100mA 200mA 300mA
INPUT VOLTAGE
*EXModel FS8853-33Cx
AMBIENT TEMPERATURE
DROPOUT VOLTAGE LOAD CURRENT
1.50 1.40 1.30
LOAD CURRENT
DROPOUT VOLTAGE (mV)
Ron()
1.20 1.10 1.00 0.90 0.80
LOAD CURRENT (mA) POWER SUPPLY REJECTION RATIO FREQUENCY
LOAD CURRENT (mA)
CURRENT LOAD CURRENT
PSRR (db)
GROUND CURRENT (µA)
0.01 1000
FREQUENCY (KHz)
LOAD CURRENT (mA)
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300mA Linear Regulator
OUTPUT VOLTAGE AMBIENT TEMPERATURE GROUND CURRENT (µA)
3.36
GROUND CURRENT INPUT VOLTAGE
OUTPUT VOLTAGE
3.34
3.32
3.28
3.26
AMBIENT TEMPERATURE
INPUT VOLTAGE
OUTPUT NOISE 1MHz (37uVRMS)
OUTPUT NOISE 1MHz (67uVRMS)
Iload =0mA
Iload =300mA
LINE TRANSIENT (IOUT=0mA)
LINE TRANSIENT (IOUT=10mA)
5.0V 4.0V
5.0V 4.0V
VOUT
COUT 3.3µF 50mV/div
VOUT
COUT 3.3µF 50mV/div
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FS8853
300mA Linear Regulator
LINE TRANSIENT (IOUT=100mA) LINE TRANSIENT (IOUT=200mA)
5.0V 4.0V
5.0V 4.0V
VOUT
COUT 3.3µF 50mV/div LOAD TRANSIENT 100mA
VOUT
COUT 3.3µF 50mV/div LOAD TRANSIENT
IOUT
IOUT
200mA 100mA
VOUT COUT 3.3µF 100mV/div
VOUT
COUT 3.3µF 50mV/div
LOAD TRANSIENT
LOAD TRANSIENT
300mA IOUT 200mA IOUT
300mA
VOUT COUT 3.3µF 50mV/div
VOUT COUT 3.3µF 100mV/div
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FS8853
300mA Linear Regulator
Detail Description
FS8853 low-dropout linear regulator. device provides preset 2.5V 3.3V output voltages output current 300mA. Other mask options special output voltages from 1.3V 4.5V with 100mV increment also available. illustrated function block diagram, consists 1.25V reference, error amplifier, P-channel pass transistor internal feedback voltage divider. 1.25V bandgap reference connected error amplifier, which compares this reference with feedback voltage amplifies voltage difference. feedback voltage lower than reference voltage, pass-transistor gate pulled lower, which allows more current pass output increases output voltage. feedback voltage high, pass-transistor gate pulled decrease output voltage. output voltage feedback through internal resistive divider connected pin. Additional blocks include output current limiter, thermal sensor, shutdown logic. Internal P-channel Pass Transistor FS8853 features P-channel MOSFET pass transistor. Unlike similar designs using pass transistors, P-channel MOSFETs require base drive, which reduces ground current. PNP-based regulators also waste considerable current dropout when pass transistor saturates, high base-drive currents under large loads. FS8853 does suffer from these problems consumes only 65µA (Typ.) ground current under heavy loads well dropout conditions. Output Voltage Selection FS8853 output voltage preset internally trimmed voltage 2.5V, 3.3V mask-optioned from 1.3V 4.5V with 100mV increment. first digits part number suffix identify output voltage (see Ordering Information). example, FS8853-33CL preset 3.3V output voltage.
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Current Limit FS8853 also include fold back current limiter. monitors controls pass transistor's gate voltage, estimates output current, limits output current within 0.6A. Thermal Overload Protection Thermal overload protection limits total power dissipation FS8853. When junction temperature exceeds +155°C, thermal sensor turns pass transistor, allowing cool down. thermal sensor turns pass transistor again after junction temperature cools down 20°C, resulting pulsed output during continuous thermal overload conditions. Thermal overload protection designed protect FS8853 event fault conditions. continuous operation, maximum operating junction temperature rating +125°C should exceeded. Operating Region Power Dissipation Maximum power dissipation FS8853 depends thermal resistance case circuit board, temperature difference between junction ambient air, rate airflow. power dissipation across devices IOUT (VIN-VOUT). resulting maximum power dissipation
PMAX
Where (TJ-TA) temperature difference between FS8853 junction surrounding air, thermal resistance package chosen, thermal resistance through printed circuit board, copper traces other materials surrounding air. better heat-sinking, copper area should equally shared between OUT, pins. FS8853 uses SOT-89 package this
9/13 TD-0405006 Rev.
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FS8853
300mA Linear Regulator
package mounted double sided printed circuit board with square inches copper allocated "heat spreading", resulting °C/W. Based maximum operating junction temperature with ambient 25°C, maximum power dissipation will spreading". Input-Output Voltage regulator's minimum input-output voltage differential, dropout voltage, determines lowest usable supply voltage. battery-powered systems, this will determine useful end-of-life battery voltage. FS8853 uses P-channel MOSFET pass transistor, dropout voltage function drain-to-source on-resistance (RDS(ON)) multiplied load current. VDROPOUT VIN-VOUT RDS(ON) IOUT
PMAX
(125 0.555W
Thermal characteristics were measured using double sided board with square inches copper area connected "heat
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FS8853
300mA Linear Regulator
Package Outline SOT-23
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FS8853
300mA Linear Regulator
SOT-89
Fortune Semiconductor
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FS8853
300mA Linear Regulator
TO-92
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300mA Linear Regulator FS8853 low-dropout linear regulator that o

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