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1.5A Ultra Low Dropout Linear Regulator
FEATURES
Ultra Low Dropout Voltage Low Ground Pin Current Excellent Line and Load Regulation Guaranteed Output Current of 1.5A Available in SOT-223, MSOP8, SOP8, SOP8-PP, TO-263, and TO-220 Packages Fixed Output Voltages : 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V SENSE Option Improves Load Regulation Over-Temperature/Over-Current Protection -40 to 125 Junction Temperature Range
TO-263 3L / 5LPKG SOT-223 3L / 5LPKG
TJ3965
MSOP8 / SOP8 / SOP8-PP
APPLICATION
Battery Powered Equipments Motherboards and Graphic Cards Microprocessor Power Supplies Peripheral Cards High Efficiency Linear Regulators Battery Chargers
TO-220 3L / 5L PKG
ORDERING INFORMATION Device (Marking) 3965S-ADJ 3965S-X.X TJ3965MD-ADJ TJ3965MD-X.X TJ3965D-ADJ TJ3965D-X.X TJ3965DP-ADJ TJ3965DP-X.X TJ3965R-ADJ TJ3965R-X.X TJ3965T-ADJ TJ3965T-X.X Package SOT-223 3L/5L MSOP8 SOP8 SOP8-PP TO-263 3L/5L TO-220 3L/5L
DESCRIPSION
The TJ3965 series of high performance ultra low-dropout linear regulators operates from 2.5V to 6V input supply and provides ultra low-dropout voltage, high output current with low ground current. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond fast to step changes in load which makes them suitable for low voltage processor applications. The TJ3965 is developed on a CMOS process technology which allows low quiescent
X.X = Output Voltage = 1.2, 1.8, 2.5, 3.3, and 5.0
current operation independent of output load current. This CMOS process also allows the TJ3965 to operate under extremely low dropout conditions.
Absolute Maximum Ratings
CHARACTERISTIC
Input Supply Voltage (Survival) Enable Input Voltage (Survival) Maximum Output Current Lead Temperature (Soldering, 5 sec) Storage Temperature Range Operating Junction Temperature Range
SYMBOL
VIN VEN IMAX TSOL TSTG TJOPR
MIN.
-65 -40
MAX.
6.5 6.5 1.5 260 150 125
UNIT
V V A
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Ordering Information
VOUT ADJ ADJ ADJ ADJ ADJ ADJ 1.2V 1.2V 1.2V 1.2V 1.2V 1.2V 1.2V 1.2V 1.2V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 1.8V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V 2.5V Package SOT-223 5L MSOP8 SOP8 SOP8-PP TO-263 5L TO-220 5L SOT-223 3L SOT-223 5L MSOP8 SOP8 SOP8-PP TO-263 3L TO-263 5L TO-220 3L TO-220 5L SOT-223 3L SOT-223 5L MSOP8 SOP8 SOP8-PP TO -263 3L TO -263 5L TO-220 3L TO-220 5L SOT-223 3L SOT-223 5L MSOP8 SOP8 SOP8-PP TO -263 3L TO -263 5L TO-220 3L TO-220 5L Order No. TJ3965S-ADJ-5L TJ3965MD-ADJ-8L TJ3965D-ADJ-8L TJ3965DP-ADJ-8L TJ3965R-ADJ-5L TJ3965T-ADJ-5L TJ3965S-1.2V-3L TJ3965S-1.2V-5L TJ3965MD-1.2V-8L TJ3965D-1.2V-8L TJ3965DP-1.2-8L TJ3965R-1.2V-3L TJ3965R-1.2V-5L TJ3965T-1.2V-3L TJ3965T-1.2V-5L TJ3965S-1.8V-3L TJ3965S-1.8V-5L TJ3965MD-1.8V-8L TJ3965D-1.8V-8L TJ3965DP-1.8V-8L TJ3965R-1.8V-3L TJ3965R-1.8V-5L TJ3965T-1.8V-3L TJ3965T-1.8V-5L TJ3965S-2.5V-3L TJ3965S-2.5V-5L TJ3965MD-2.5V-8L TJ3965D-2.5V-8L TJ3965DP-2.5V-8L TJ3965R-2.5V-3L TJ3965R-2.5V-5L TJ3965T-2.5V-3L TJ3965T-2.5V-5L Description 1.5A, Adjustable, Enable 1.5A, Adjustable, Enable 1.5A, Adjustable, Enable 1.5A, Adjustable, Enable 1.5A, Adjustable, Enable 1.5A, Adjustable, Enable 1.5A 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE Package Marking 3965-ADJ TJ3965-ADJ TJ3965-ADJ TJ3965-ADJ TJ3965-ADJ TJ3965-ADJ 3965-1.2 3965-1.2 TJ3965-1.2 TJ3965-1.2 TJ3965-1.2 TJ3965-1.2 TJ3965-1.2 TJ3965-1.2 TJ3965-1.2 3965-1.8 3965-1.8 TJ3965-1.8 TJ3965-1.8 TJ3965-1.8 TJ3965-1.8 TJ3965-1.8 TJ3965-1.8 TJ3965-1.8 3965-2.5 3965-2.5 TJ3965-2.5 TJ3965-2.5 TJ3965-2.5 TJ3965-2.5 TJ3965-2.5 TJ3965-2.5 TJ3965-2.5
TJ3965
Supplied As Reel Reel Reel Reel Reel or Tube Tube Reel Reel Reel Reel Reel Reel or Tube Reel or Tube Tube Tube Reel Reel Reel Reel Reel Reel or Tube Reel or Tube Tube Tube Reel Reel Reel Reel Reel Reel or Tube Reel or Tube Tube Tube
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Ordering Information
VOUT 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V 5.0V Package SOT-223 3L SOT-223 5L MSOP8 SOP8 SOP8-PP TO -263 3L TO -263 5L TO-220 3L TO-220 5L SOT-223 3L SOT-223 5L MSOP8 SOP8 SOP8-PP TO -263 3L TO -263 5L TO-220 3L TO-220 5L Order No. TJ3965S-3.3V-3L TJ3965S-3.3V-5L TJ3965MD-3.3V-8L TJ3965D-3.3V-8L TJ3965DP-3.3V-8L TJ3965R-3.3V-3L TJ3965R-3.3V-5L TJ3965T-3.3V-3L TJ3965T-3.3V-5L TJ3965S-5.0V-3L TJ3965S-5.0V-5L TJ3965MD-5.0V-8L TJ3965D-5.0V-8L TJ3965DP-5.0V-8L TJ3965R-5.0V-3L TJ3965R-5.0V-5L TJ3965T-5.0V-3L TJ3965T-5.0V-5L 1.5A 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE 1.5A 1.5A, Enable, SENSE Description Package Marking 3965-3.3 3965-3.3 TJ3965-3.3 TJ3965-3.3 TJ3965-3.3 TJ3965-3.3 TJ3965-3.3 TJ3965-3.3 TJ3965-3.3 3965-5.0 3965-5.0 TJ3965-5.0 TJ3965-5.0 TJ3965-5.0 TJ3965-5.0 TJ3965-5.0 TJ3965-5.0 TJ3965-5.0
TJ3965
(Continued) Supplied As Reel Reel Reel Reel Reel Reel or Tube Reel or Tube Tube Tube Reel Reel Reel Reel Reel Reel or Tube Reel or Tube Tube Tube
T J 3 9 6 5 D P - 3.3 V - 8 L
Lead Count : 3L(Fixed Output Only) / 5L / 8L Output Voltage : ADJ / 1.2V / 1.8V / 2.5V / 3.3V / 5.0V Package Type S MD D DP R T : SOT223 : MSOP8 : SOP8 : SOP8-PP : TO263 : TO220
Root Name Product Code
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PIN CONFIGURATION
TJ3965
SOT223-3L
SOT223-5L
MSOP8
SOP8 / SOP8-PP
TO263-3L
TO263-5L
TO220-3L
TO220-5L
PIN DESCRIPTION
SOT223 / SOT263 / TO220 3 LEAD Pin No. Name 1 2 3 4 5 VIN GND VOUT Function Input Supply Ground Output Voltage Name EN VIN VOUT SENSE/ADJ GND Function Chip Enable Input Supply Output Voltage Remote Sense or Output Adjust Ground SOT-223 5 LEAD
TO263 / TO220 5 LEAD Pin No. Name 1 2 3 4 5 / 6/ 7 / 8 EN VIN GND VOUT SENSE/ADJ Function Chip Enable Input Supply Ground Output Voltage Remote Sense or Output Adjust
MSOP8 / SOP8 / SOP8-PP 8 LEAD Name EN VIN VOUT SENSE/ADJ GND Function Chip Enable Input Supply Output Voltage Remote Sense or Output Adjust Ground
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TYPICAL APPLICATION
Typical 3 Pin Application
VIN TJ3965 GND COUT 33F
+
TJ3965
INPUT CIN 68F
VOUT
OUTPUT
Typical 5 / 8 Pin Application
VIN TJ3965 EN EN GND SENSE COUT 33F
+
INPUT CIN 68F
VOUT
5 / 8 Pin Remote Load Sense Application
INPUT OUTPUT
VIN TJ3965 EN EN GND
VOUT
Typical Adjustable Version Application
VIN TJ3965 EN EN GND R1 ADJ VOUT
+
INPUT CIN 68F
* TJ3965 can deliver a continuous current of 1.5A over the full operating temperature. However, the output current is limited by the restriction of power dissipation which differs from packages. A heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. With respect to the applied package, the maximum output current of 1.5A may be still undeliverable. * See Application Information
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-
-
68F
SENSE
+
CIN
COUT 33F
R2
-
+ + +
OUTPUT
+
L O A D
OUTPUT COUT 33F
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1.5A Ultra Low Dropout Linear Regulator
ELECTRICAL CHARACTERISTICS(Note 1)
TJ3965
Limits in standard typeface are for TJ=25, and limits in boldface type apply over the full operating temperature range. (Note 2) Unless otherwise specified: VIN = VO(NOM) + 1 V, IL = 10 mA, CIN = 68 uF, COUT = 33 uF, VEN = VIN - 0.3 V PARAMETER Output Voltage Tolerance Adjustable Pin Voltage (ADJ version) Line Regulation
(Note 3)
SYMBOL VO VADJ VLINE VLOAD
TEST CONDITION 10 mA < IL < 1.5 A VOUT+1 V < VIN < 6 V 10 mA < IL < 1.5 A VOUT+1.5 V < VIN < 6 V VOUT+1 V < VIN < 6 V 10 mA < IL < 1.5 A IL = 150 mA
MIN. -2 -3 1.117 1.110 2.0 1.7 -
TYP. 0 1.145 0.25 0.25 40 380 30 30 30 2.2 165 10 0 VIN 5
MAX. 2 3 1.174 1.188 0.55 0.60 0.50 0.55 55 65 450 550 55 75 55 75 55 75 0.2 20
UNIT % V %/V %
Load Regulation
(Note 3, 4)
Dropout Voltage
(Note 5)
VDROP IL = 1.5 A IL = 150 mA
mV
Ground Pin Current
(Note 6)
IGND1 IL = 1.5 A
uA
Ground Pin Current
(Note 7)
IGND2 IPEAK TSD TSD VIL VIH IEN
VEN < 0.2 V
uA A
Output Peak Current Thermal Shutdown Temperature Thermal Shutdown Hysteresis Logic Low Enable threshold Logic High Enable Input Current
Output = Low Output = High VEN = VIN
VIN-0.3 -
nA
Note 1. Stresses listed as the absolute maximum ratings may cause permanent damage to the device. These are for stress ratings. Functional operating of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibly to affect device reliability. Note 2. The minimum operating value for input voltage is equal to either (VOUT,NOM + VDROP) or 2.5V, whichever is greater. Note 3. Output voltage line regulation is defined as the change in output voltage from the nominal value due to change in the input line voltage. Output voltage load regulation is defined as the change in output voltage from the nominal value due to change in load current. Note 4. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested for load regulation in the load range from 10mA to 1.5A Note 5. Dropout voltage is defined as the minimum input to output differential voltage at which the output drops 2% below the nominal value. Dropout voltage specification applies only to output voltages of 2.5V and above. For output voltages below 2.5V, the dropout voltage is nothing but the input to output differential, since the minimum input voltage is 2.5V Note 6. Ground current, or quiescent current, is the difference between input and output currents. It's defined by IGND1 = IIN - IOUT under the given loading condition. The total current drawn from the supply is the sum of the load current plus the ground pin current. Note 7. Ground current, or standby current, is the input current drawn by a regulator when the output voltage is disabled by an enable signal.
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TYPICAL OPERATING CHARACTERISTICS
TJ3965
Ambient Temperature vs. Output Voltage Change
Output Current vs. Dropout Voltage
Power Dissipation vs. Case Temperature, MSOP8
Power Dissipation vs. Case Temperature, SOP8
Power Dissipation vs. Case Temperature, SOP8-PP T.B.D.
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APPLICATION INFORMATION
Output Adjustment (Adjustable Version)
TJ3965
An adjustable output device has output voltage range of 1.145V to 5.0V. To obtain a desired output voltage, the following equation can be used with R1 resistor range of 10k to 220k
V R 2 = R1 OUT - 1 1.145
To enhance output stability, a capacitor of 68pF to 100pF can be placed in series with VOUT and ADJ. SENSE Pin In applications where the regulator output is not very close to the load, the TJ3965 can provide better remote load regulation characteristics using the SENSE pin. TJ3965 regulates the voltage at the output pin. Hence, the voltage at the remote load will be lower than the voltage at the output pin as a value of the voltage drop across the trace series resistance. If the sense option pin is not required, the sense pin must be connected to the VOUT pin. Connecting the sense pin to the remote load will provide regulation at the remote load because the TJ3965 regulates the voltage at the sense pin when the sense option pin is used.
Maximum Output Current Capability The TJ3965 can deliver a continuous current of 1.5A over the full operating junction temperature range. However, the output current is limited by the restriction of power dissipation which differs from packages. A heat sink may be required depending on the maximum power dissipation and maximum ambient temperature of application. With respect to the applied package, the maximum output current of 1.5A may be still undeliverable due to the restriction of the power dissipation of TJ3965. Under all possible conditions, the junction temperature must be within the range specified under operating conditions. The temperatures over the device are given by: TC = TA + PD X CA TJ = TC + PD X JC TJ = TA + PD X JA where TJ is the junction temperature, TC is the case temperature, TA is the ambient temperature, PD is the total power dissipation of the device, CA is the thermal resistance of case-to-ambient, JC is the thermal
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resistance of junction-to-case, and JA is the thermal resistance of junction to ambient. The total power dissipation of the device is given by: PD = PIN - POUT = (VIN X IIN)-(VOUT X IOUT) = (VIN X (IOUT+IGND)) - (VOUT X IOUT) = (VIN - VOUT) X IOUT + VIN X IGND
TJ3965
where IGND is the operating ground current of the device which is specified at the Electrical Characteristics. The maximum allowable temperature rise (TRmax) depends on the maximum ambient temperature (TAmax) of the application, and the maximum allowable junction temperature (TJmax): TRmax = TJmax - TAmax The maximum allowable value for junction-to-ambient thermal resistance, JA, can be calculated using the formula: JA = TRmax / PD TJ3965 is available in SOT223, MSOP8, SOP8-PP, TO263, and TO220 packages. The thermal resistance depends on amount of copper area or heat sink, and on air flow. If the maximum allowable value of JA calculated above is over 140 C/W for SO-223 package, over 220 C/W for MSOP8 package, over 165C/W for SOP8 package, over 170C/W for SOP8-PP package, over 80 C/W for TO263 package, over 75 C/W for TO220 package, no heat sink is needed since the package can dissipate enough heat to satisfy these requirements. If the value for allowable JA falls near or below these limits, a heat sink or proper area of copper plane is required. In summary, the absolute maximum ratings of thermal resistances are as follow: Absolute Maximum Ratings of Thermal Resistance No heat sink / No air flow / No adjacent heat source / TA = 25 C Characteristic Thermal Resistance Junction-To-Ambient / SOT223 Thermal Resistance Junction-To-Ambient / MSOP8 Thermal Resistance Junction-To-Ambient / SOP8 Thermal Resistance Junction-To-Ambient / SOP8-PP Thermal Resistance Junction-To-Ambient / TO263 Thermal Resistance Junction-To-Ambient / TO220 Symbol JA-SOT223 JA-MSOP8 JA-SOP8 JA-SOP8-PP JA-TO263 JA-TO220 Max. Rating 140 220 165 175 80 75 Unit C/W C/W C/W C/W C/W C/W
T.B.D.
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