L4810CX ,10V very low voltage regulatorL4805-L4885-L4892L4808-L4810-L4812VERY LOW DROP VOLTAGE REGULATORS. INPUT/OUTPUT DROP TYP. 0.4V. 40 ..
L4812CV ,VERY LOWDROP VOLTAGE REGULATORSapplications the L4805 is ideal for 5V9.2V,10V and12Vversions(all± 4%,T =25°C)the-logicsuppliesbeca ..
L482 ,HALL鸈FFECT PICKUP IGNITION CONTROLLERL482HALL–EFFECT PICKUP IGNITION CONTROLLER.DIRECT DRIVING OF THE EXTERNAL PO-WER DARLINGTON. COIL C ..
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LB-603VF , High efficiency, three-digit numeric displays
LB8106 ,Actuator Driver for Portable CD Playersfeatures a " V (typ) output up con-ou‘n +oun-oln'2+our:-‘ FGNDFGMDFGM:OUT3+our:—our»oun—Mt PMvertex ..
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L4810-L4810CV-L4810CX-L4812CV-L4885CV
VERY LOWDROP VOLTAGE REGULATORS
L4805-L4885-L4892
L4808-L4810-L 4812VERY LOW DROP VOLTAGE REGULATORS INPUT/OUTPUT DROP TYP. 0.4V. 400mA OUTPUT CURRENT. LOW QUIESCENT CURRENT. REVERSE POLARITY PROTECTION. OVERVOLTAGEPROTECTION(± 60V). FOLDBACK CURRENT LIMITING. THERMAL SHUTDOWN
TO-220
DESCRIPTIONL4800series devices are voltage regulators witha
verylow voltagedrop (typically0.4Vatfull rated cur-
rent), output current upto 400mA, low quiescent
currentandcomprehensiveon-chip protection.The- devices are protected against load dump and
field decay transients of± 60V,polarity reversal and
overheating.A foldback current limiter protects
against load short circuits. Availablein 5V, 8.5V,
9.2V,10Vand12Vversions(all± 4%,TI =25°C)the- regulatorsaredesignedforautomotive,industrial
and consumer applicationswhere low consumption particularly important.
BLOCK DIAGRAM automotiveapplicationsthe L4805is idealfor 5V
logic suppliesbecauseitcan operateeven when the
batteryvoltage falls below 6V.In batterybackupand
standbyapplications the low consumptionof these
devices extendsbattery life.
SOT-82
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit DC Input Voltage +35 V Input Reverse Voltage -18 V
Transient Input Overvoltages:
Load Dump:
5ms< Trise< 10ms, Fall Time Constant= 100ms,
Rsource< 0.5Ω
Field Decay:
5ms
Tj,Tstg Junction and Storage Temperature Range -55to+ 150 °C
THERMAL DATA
Symbol Parameter SOT82 TO220 Unit
Rth j-case Thermal Resistance Junction-case Max. 8 4 °C/W
Rth j-amb Thermal Resistance Junction-ambient Max. 100 75 °C/W
PIN CONNECTION (top view)
TEST AND APPLICATION CIRCUIT
Theoutputcapacitor isrequired forstability.Though
the 100 μF shownis the minimum recommended
value, actual size and type may vary depending
upon the application load and temperature range.
Capacitoreffectiveseriesresistance(ESR)also fac-
torsin theIC stability. Since ESR varies from one
brandto the next,somebench work maybe required determine the minimum capacitor valueto usein
production. Worst-caseis usuallydeterminedat the
minimum ambient temperature and maximum load
expected.
Output capacitors canbe increasedin sizeto any
desired value above the minimum. One possible
purposeof this wouldbeto maintain theoutput vol-
tages during brief conditionsof negative input tran-
Capacitorsmust alsobe ratedatall ambienttempe-
ratureexpectedin the system. Many aluminum type
electrolyticswill freezeat temperatures less than– °C, reducing their effective capacitanceto zero. maintain regulator stability downto–40 °C, ca-
pacitors ratedat that temperature (such as tan-
talums) mustbe used.
Order Codes Output Voltage
TO-220 SOT-82
L4805CV
L4808CV
L4885CV
L4892CV
L4810CV
L4812CV
L4805CX
L4808CX
L4885CX
L4892CX
L4810CX
L4812CX
8.5V
9.2VVV
L4805-L 4808-L4885-L4892-L4810-L4812
ELECTRICAL CHARACTERISTICS (VI= 14.4V; CO= 100μF;Tj =25°C unless otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit Output Voltage IO= 5mAto 400mA (L4805) 4.80 5.00 5.20 V= 5mAto 400mA (L4808) 7.68 8.00 8.32 V= 5mAto 400mA (L4810) 8.16 8.50 8.84 V= 5mAto 400mA (L4812) 8.83 9.20 9.57 V= 5mAto 400mA (L4885) 9.60 10.00 10.40 V= 300mA (L4892) 11.50 12.00 12.50 V Operating Input Voltage 26 V
ΔVO/VO Line Regulation VI=13to 26V;IO= 5mA 1 10 mV/V
ΔVO/VO Load Regulation IO=5to 400mA* 3 15 mV/V -VO Dropout Voltage IO= 400mA* 0.4 0.7 V= 150mA 0.2 0.4 V Quiescent Current IO= 0mA 0.8 2 mA= 150mA 25 45 mA= 400mA* 65 90 mA
ΔVO
ΔT•VO
Temperature Output Voltage
Drift
0.1 mV
°C•V
SVR Supply Voltage Rejection IO= 350mA;f= 320Hz; =100μF;VI =VO +3V+2Vpp dB Max Output Current 800 mA
ISC Output Short Circuit Current
(fold back condition)
350 500 mA onlyfor L4892 thecurrenttestconditions isIO= 300mA
ELECTRICAL CHARACTERISTICS (VI= 14.4V; CO= 100μF;Tj= -40to 125°C (note1) unless
otherwise specified.)
Symbol Parameter Test Condition Min. Typ. Max. Unit Output Voltage IO= 5mAto 400mA (L4805) 4.70 5.00 5.30 V= 5mAto 400mA (L4808) 7.50 8.00 8.50 V= 5mAto 400mA (L4810) 8.00 8.50 9.00 V= 5mAto 400mA (L4812) 8.65 9.20 9.75 V= 5mAto 400mA (L4885) 9.40 10.00 10.60 V= 300mA (L4892) 11.30 12.00 12.70 V Operating Input Voltage see note2 26 V
ΔVO/VO Line Regulation VI=14to 26V;IO= 5mA 2 15 mV/V
ΔVO/VO Load Regulation IO=5to 400mA* 5 25 mV/V -VO Dropout Voltage IO= 400mA* 0.5 0.9 V= 150mA 0.25 0.5 V Quiescent Current IO= 0mA 1.2 3 mA= 150mA 40 70 mA= 400mA* 80 140 mA Max Output Current 870 mA
ISC Output Short Circuit Current
(fold back condition)
230 mA
L4805-L4808-L4885- L4892-L4810-L4812
Figure 5: Preregulator for Distributed Supplies
Figure1: Dropout Voltage vs. Output Current Figure2: Quiescent Current vs. Output Current
Figure3: Output Voltage vs. Temperature Figure4: Foldback Current Limiting(L4805)
L4805-L 4808-L4885-L4892-L4810-L4812
SOT82 PACKAGE MECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 7.4 7.8 0.291 0.307 10.5 10.8 0.413 0.425 0.7 0.9 0.028 0.035 0.49 0.75 0.019 0.030 2.4 2.7 0.094 0.106 1.2 0.047 15.7 0.618 2.2 0.087 4.4 0.173 3.8 0.150 2.54 0.100
L4805-L4808-L4885- L4892-L4810-L4812
TO220 PACKAGE MECHANICAL DATA
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 4.8 0.189 1.37 0.054 2.4 2.8 0.094 0.110 1.2 1.35 0.047 0.053 0.35 0.55 0.014 0.022 0.8 1.05 0.031 0.041 1.15 1.4 0.045 0.055 4.95 5.08 5.21 0.195 0.200 0.205 10.4 0.409 10.05 10.4 0.396 0.409 16.2 0.638 26.3 26.7 27.1 1.035 1.051 1.067 2.6 3 0.102 0.118 15.1 15.8 0.594 0.622 6 6.6 0.236 0.260
Dia 3.65 3.85 0.144 0.152
L4805-L 4808-L4885-L4892-L4810-L4812
