350mA Linear Regulator FS8854 low-dropout linear regulator that o

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350mA Linear Regulator FS8854 low-dropout linear regulator that o

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FS8854
350mA Linear Regulator
FS8854 low-dropout linear regulator that operations input voltage range from +2.5V +6.5V delivers 350mA output current. high-accuracy output voltage preset internally trimmed voltage 2.5V 3.3V. Other output voltages mask-optioned from 1.3V 5.0V with 100mV increment, except FS8854-29Cx which 2.85V output voltage. FS8854 consist 1.25V bandgap reference, error amplifier, P-channel pass transistor. Other features include short-circuit protection thermal shutdown protection. FS8854 devices available TO-92, SOT-89 SOT-23 packages.
Ordering Information
FS8854-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 4.6V 4.7V 4.8V 4.9V 5.0V
Features
dropout voltage 500mV 350mA (Typ.) ±35mV output voltage accuracy Preset 2.5V, 3.3V Mask option from 1.3V 5.0V 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.
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
1/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Configurations
Part FS8854 -xxxD
TO-92
Part
SOT-89
FS8854 -xxxK
FS8854 xxCxxxxx
FS8854 -xxxE
(BOTTOM VIEW)
FS8854 -xxxF FS8854 -xxxW
FS8854 -xxxL
FS8854 -xxxI FS8854 -xxxY
SOT-23
Part FS8854 -xxxA
FS8854 -xxxB
4xxx
FS8854 -xxxC FS8854 -xxxV
Package Marking Information
SOT-23 EXFS8854-33CC
TO-92 SOT-89 EXFS8854-33CL
FS8854 33CLxxxx
xxxxDate Code
433C
PointLot Bottom PointYear week,
EXFS8854-33PC
EXFS8854-33PL
FS8854 33PLxxxx
xxxxDate Code
433C
PointLot Bottom PointYear week, after marking Pb/P Free
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
2/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Description
Part FS8854-xxCA FS8854-xxCB FS8854-xxCC FS8854-xxCV FS8854-xxCD FS8854-xxCE FS8854-xxCF FS8854-xxCW FS8854-xxCK FS8854-xxCL FS8854-xxCI FS8854-xxCY Symbol Ground pin. Description
Regulator input pin.
Regulator output pin.
regulator input pin. Supply voltage range from 2.5V 6.5V. Bypass with capacitor GND. output voltage pin. Sources 350mA. Bypass with 3.3µF capacitor GND. provides reference voltages.
Functional Block Diagram
Current Limit
Shutdown Logic
Thermal Protection
1.25V Bandgap Reference
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
3/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Typical Application Circuit
FS8854
Absolute Maximum Ratings
Input voltage 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.
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
4/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Electrical Characteristics
(TA=25, unless otherwise noted.) Symbol VOUT VOUT IMAX ILIMIT VDROP VLINE VLOAD Parameter Input Voltage Output Voltage Output Voltage Accuracy Maximum Load Current Current Limit Short-Circuit Current Ground Current Dropout Voltage Line Regulation Load Regulation Output Noise Ripple Rejection Thermal Shutdown Temperature Thermal Shutdown Hysteresis Thermal Resistance VOUT=0V, VIN>VOUT+0.6V ILOAD=0mA 350mA, VIN=VOUT+0.6V IOUT=100mA IOUT=300mA IOUT=350mA VOUT+0.6V<VIN<6.5V, ILOAD=1mA IOUT=0mA 350mA F=1Hz 10KHz, COUT=3.3µF F=10KHz, COUT=3.3µF 0.02 SOT-23 SOT-89 TO-92 VIN=VOUT+0.6V, IOUT=1mA VIN>VOUT+0.6V, VIN6.5V Test Conditions VOUT0.035 0.03 VOUT VOUT+ 0.035 Unit %/mA µVRMS °C/W °C/W °C/W
PSRR THYS
Fortune Semiconductor Corp.
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TD-0410025
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FS8854
350mA Linear Regulator
Typical Operating Characteristics
(CIN=1µF COUT=3.3µF, TA=+25, unless otherwise noted.)
OUTPUT VOLTAGE INPUT VOLTAGE
GROUND CURRENT AMBIENT TEMPERATURE
OUTPUT VOLTAGE
GROUND CURRENT (µA)
100mA 200mA 350mA
INPUT VOLTAGE *EXModel FS8854-33Cx
AMBIENT TEMPERATURE LOAD CURRENT
1.60 1.50 1.40
DROPOUT VOLTAGE LOAD CURRENT
DROPOUT VOLTTAGE
1.30 1.20 1.10 1.00
0.90 0.80
LOAD CURRENT (mA)
POWER SUPPLY REJECTION RATIO FREQUENCY
-100
LOAD CURRENT (mA)
CURRENT LOAD CURRENT
60.00
GROUND CURRENT (µA)
58.00 56.00 54.00 52.00 50.00 48.00 46.00
PSRR (db)
0.01 1000
FREQUENCY (KHz)
LOAD CURRENT (mA)
Fortune Semiconductor Corp.
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+886-2-2809-4742 FAX: +886-2-2809-4874
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TD-0410025
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FS8854
350mA Linear Regulator
OUTPUT VOLTAGE AMBIENT TEMPERATURE
3.36
GROUND CURRENT INPUT VOLTAGE GROUND CURRENT (µA)
OUTPUT VOLTAGE
3.34
3.32
3.28
3.26
AMBIENT TEMPERATURE
INPUT VOLTAGE
LINE TRANSIENT (IOUT=10mA)
LINE TRANSIENT (IOUT=0mA)
5.0V 4.0V
5.0V 4.0V
VOUT
COUT 3.3µF 50mV/div LINE TRANSIENT (IOUT=200mA)
VOUT
COUT 3.3µF 50mV/div LINE TRANSIENT (IOUT=350mA)
5.0V 4.0V
5.0V 4.0V
VOUT
COUT 3.3µF 50mV/div
VOUT
COUT 3.3µF 50mV/div
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
7/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
LOAD TRANSIENT LOAD TRANSIENT
100mA IOUT IOUT
200mA 100mA
VOUT
COUT 3.3µF 50mV/div
VOUT
COUT 3.3µF 50mV/div
LOAD TRANSIENT LOAD TRANSIENT
350mA IOUT 200mA IOUT
350mA
VOUT
COUT 3.3µF 50mV/div
VOUT
COUT 3.3µF 100mV/div
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
8/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Detail Description
FS8854 low-dropout linear regulator. device provides preset 2.5V 3.3V output voltages output current 350mA. Other mask options special output voltages from 1.3V 5.0V 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 FS8854 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. FS8854 does suffer from these problems consumes only 65µA (Typ.) ground current under heavy loads well dropout conditions. Output Voltage Selection FS8854 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, FS8854-33CL preset 3.3V output voltage.
Fortune Semiconductor Corp. +886-2-2809-4742 FAX: +886-2-2809-4874
Current Limit FS8854 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 FS8854. 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 FS8854 event fault conditions. continuous operation, maximum operating junction temperature rating +125°C should exceeded. Operating Region Power Dissipation Maximum power dissipation FS8854 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 FS8854 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. FS8854 uses SOT-89 package this
9/13 TD-0410025 Rev.
http://www.fsc.com.tw
FS8854
350mA Linear Regulator
package mounted double sided printed circuit board with square inches copper allocated "heat spreading", resulting 180°C/W. Based maximum operating junction temperature 125°C 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. FS8854 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
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
10/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
Package Outline SOT-23
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
11/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
SOT-89
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
12/13
TD-0410025
Rev.
FS8854
350mA Linear Regulator
TO-92
Fortune Semiconductor Corp.
http://www.fsc.com.tw
+886-2-2809-4742 FAX: +886-2-2809-4874
13/13
TD-0410025
Rev.

350mA Linear Regulator FS8854 low-dropout linear regulator that o

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