概述
数据手册TJ3966T-5.0V 概述
3.0A Ultra Low Dropout Linear Regulator 3.0A超低压差线性稳压器
TJ3966T-5.0V 数据手册
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PDF下载3.0A Ultra Low Dropout Linear Regulator
TJ3966
FEATURES
z Ultra Low Dropout Voltage
SOP8-PP PKG
z Low Ground Pin Current
z Excellent Line and Load Regulation
z Guaranteed Output Current of 3.0A
z Available in SOP8-PP, TO-252, TO-263, and TO-220
Packages
TO-252 3L/ 5L PKG
z Fixed Output Voltages : 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V
z SENSE Option Improves Load Regulation
z Over-Temperature/Over-Current Protection
z -40℃ to 125℃ Junction Temperature Range
z Moisture Sensitivity Level 3
TO-263 3L/ 5L PKG
APPLICATION
z Battery Powered Equipments
z Motherboards and Graphic Cards
z Microprocessor Power Supplies
z Peripheral Cards
TO-220 3L/ 5L PKG
z High Efficiency Linear Regulators
z Battery Chargers
DESCRIPSION
The TJ3966 series of high performance ultra low-dropout
ORDERING INFORMATION
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 micro-
processor applications. The TJ3966 is developed on a
CMOS process technology which allows low quiescent
current operation independent of output load current. This
CMOS process also allows the TJ3966 to operate under
extremely low dropout conditions.
Device
Package
TJ3966DP-ADJ
TJ3966DP-X.X
SOP8-PP
TJ3966GRS-ADJ
TJ3966GRS-X.X
TJ3966GR-ADJ
TJ3966GR-X.X
TJ3966T-ADJ
TO-252 3L/5L
TO-263 3L/5L
TO-220 3L/5L
TJ3966T-X.X
X.X = Output Voltage = 1.2, 1.8, 2.5, 3.3, and 5.0
Absolute Maximum Ratings
CHARACTERISTIC
Input Supply Voltage (Survival)
Enable Input Voltage (Survival)
Maximum Output Current
SYMBOL
VIN
MIN.
-0.3
-0.3
-
MAX.
7.0
UNIT
V
(1)
VEN
7.0
V
IMAX
TSOL
TSTG
TJOPR
3.0
A
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
260
150
125
℃
℃
℃
-65
-40
Operating Junction Temperature Range
(1) It is recommended for VEN not to exceed VIN Voltage
Aug. 2010 - Rev. 1.7.1
- 1 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
Ordering Information
VOUT
Package
Order No.
Description
Supplied As
Reel
Status
SOP8-PP
TO-252 5L
TO-252 5L
TO-263 5L
TO-263 5L
TO-220 5L
SOP8-PP
TO-252 3L
TO-252 3L
TO-252 5L
TO-252 5L
TO-263 3L
TO-263 3L
TO-263 5L
TO-263 5L
TO-220 3L
TO-220 5L
SOP8-PP
TO-252 3L
TO-252 3L
TO-252 5L
TO-252 5L
TO-263 3L
TO-263 3L
TO-263 5L
TO-263 5L
TO-220 3L
TO-220 5L
SOP8-PP
TO-252 3L
TO-252 3L
TO-252 5L
TO-252 5L
TO-263 3L
TO-263 3L
TO-263 5L
TO-263 5L
TO-220 3L
TO-220 5L
TJ3966DP-ADJ
3.0A, Adjustable, Enable
3.0A, Adjustable, Enable
3.0A, Adjustable, Enable
3.0A, Adjustable, Enable
3.0A, Adjustable, Enable
3.0A, Adjustable, Enable
3.0A, Enable, SENSE
3.0A
Active
TJ3966RS-ADJ-5L
TJ3966GRS-ADJ-5L
TJ3966R-ADJ-5L
TJ3966GR-ADJ-5L
TJ3966T-ADJ-
Reel
Reel
Reel
Reel
Tube
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Tube
Tube
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Tube
Tube
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Tube
Tube
Obsolete
Active
ADJ
Obsolete
Active
Active
TJ3966DP-1.2
Active
TJ3966RS-1.2V-3L
TJ3966GRS-1.2V-3L
TJ3966RS-1.2V-5L
TJ3966GRS-1.2V-5L
TJ3966R-1.2V-3L
TJ3966GR-1.2V-3L
TJ3966R-1.2V-5L
TJ3966GR-1.2V-5L
TJ3966T-1.2V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
1.2V
1.8V
2.5V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Active
TJ3966T-1.2V
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Active
TJ3966DP-1.8V
Active
TJ3966RS-1.8V-3L
TJ3966GRS-1.8V-3L
TJ3966RS-1.8V-5L
TJ3966GRS-1.8V-5L
TJ3966R-1.8V-3L
TJ3966GR-1.8V-3L
TJ3966R-1.8V-5L
TJ3966GR-1.8V-5L
TJ3966T-1.8V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Active
TJ3966T-1.8V
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Active
TJ3966DP-2.5V
Active
TJ3966RS-2.5V-3L
TJ3966GRS-2.5V-3L
TJ3966RS-2.5V-5L
TJ3966GRS-2.5V-5L
TJ3966R-2.5V-3L
TJ3966GR-2.5V-3L
TJ3966R-2.5V-5L
TJ3966GR-2.5V-5L
TJ3966T-2.5V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Active
TJ3966T-2.5V
3.0A, Enable, SENSE
Active
Aug. 2010 - Rev. 1.7.1
- 2 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
Ordering Information
(Continued)
VOUT
Package
Order No.
Description
Supplied As
Reel
Status
SOP8-PP
TO-252 3L
TO-252 3L
TO-252 5L
TO-252 5L
TO-263 3L
TO-263 3L
TO-263 5L
TO-263 5L
TO-220 3L
TO-220 5L
SOP8-PP
TO-252 3L
TO-252 3L
TO-252 5L
TO-252 5L
TO-263 3L
TO-263 3L
TO-263 5L
TO-263 5L
TO-220 3L
TO-220 5L
TJ3966DP-3.3V
3.0A, Enable, SENSE
3.0A
Active
TJ3966RS-3.3V-3L
TJ3966GRS-3.3V-3L
TJ3966RS-3.3V-5L
TJ3966GRS-3.3V-5L
TJ3966R-3.3V-3L
TJ3966GR-3.3V-3L
TJ3966R-3.3V-5L
TJ3966GR-3.3V-5L
TJ3966T-3.3V
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Tube
Tube
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Reel
Tube
Tube
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
3.3V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Active
TJ3966T-3.3V
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Active
TJ3966DP-5.0V
Active
TJ3966RS-5.0V-3L
TJ3966GRS-5.0V-3L
TJ3966RS-5.0V-5L
TJ3966GRS-5.0V-5L
TJ3966R-5.0V-3L
TJ3966GR-5.0V-3L
TJ3966R-5.0V-5L
TJ3966GR-5.0V-5L
TJ3966T-5.0V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
5.0V
Obsolete
Active
3.0A
3.0A, Enable, SENSE
3.0A, Enable, SENSE
3.0A
Obsolete
Active
Active
TJ3966T-5.0V
3.0A, Enable, SENSE
Active
TJ 3966
Lead Count : 3L / 5L (For TO-252 / TO-263 PKG Only) *
Output Voltage : ADJ / 1.2V / 1.8V / 2.5V / 3.3V / 5.0V
DP : SOP8-PP
RS : TO-252
Package Type
R
T
: TO-263
: TO-220
G
: Halogen Free
Green Mode
Blank : Pb Free
Root Name
Product Code
* It is written to distinguish the lead count of TO-252 / TO-263 PKG.
Aug. 2010 - Rev. 1.7.1
- 3 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
PIN CONFIGURATION
8
7
6
5
GND
N.C
N.C
N.C
EN
VIN
1
2
3
4
Exposed
PAD
VOUT
SENSE/ADJ
SOP8-PP (Exposed PAD)
TO252-3L
TO252-5L
TO263-3L
TO263-5L
TO220-3L
TO220-5L
PIN DESCRIPTION
TO252 / TO263 / TO220 3 LEAD
TO252 / TO263 / TO220 5 LEAD
SOP8-PP 8 LEAD
Pin No.
Name
Function
Name
Function
Chip Enable
Input Supply
Ground
Name
Function
Chip Enable
Input Supply
Output Voltage
1
2
3
4
5
6
7
8
-
VIN
Input Supply
EN
EN
VIN
GND
Ground
VIN
VOUT
Output Voltage
GND
VOUT
Remote Sense
or Output Adjust
-
-
-
-
-
-
-
-
-
-
-
-
VOUT
Output Voltage
SENSE/ADJ
N.C
Remote Sense
or Output Adjust
SENSE/ADJ
Not Connect
Not Connect
Not Connect
Ground
-
-
-
-
-
-
-
-
N.C
N.C
GND
Exposed
Thermal PAD
Connect to
Ground.
Aug. 2010 - Rev. 1.7.1
- 4 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
TYPICAL APPLICATION
Typical 3 Pin Application
VIN
VOUT
INPUT
OUTPUT
TJ3966
+
-
CIN
COUT
+
-
GND
68μF
33μF
Typical 5 / 8 Pin Application
INPUT
VIN
EN
VOUT
OUTPUT
TJ3966
+
+
-
CIN
COUT
SENSE
EN
68μF
GND
-
33μF
5 / 8 Pin Remote Load Sense Application
OUTPUT
INPUT
VIN
VOUT
TJ3966
+
-
+
L
CIN
COUT
EN
SENSE
EN
O
A
D
68μF
GND
-
33μF
Typical Adjustable Version Application
VIN
VOUT
INPUT
OUTPUT
TJ3966
R2
+
+
CIN
COUT
EN
ADJ
EN
68μF
GND
-
-
33μF
R1
* TJ3966 can deliver a continuous current of 3.0A 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 3.0A may be still undeliverable.
* When a Pull-Up resistor is connected between VEN terminal and VEN Signal (or VIN line), the resistance
of the Pull-Up resistor should be kept under 10kΩ.
* See Application Information
Aug. 2010 - Rev. 1.7.1
- 5 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
ELECTRICAL CHARACTERISTICS(Note 1)
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 µF, COUT = 33 µF, VEN = VIN - 0.3 V
PARAMETER
SYMBOL
VO
TEST CONDITION
10 mA < IL < 3 A
MIN.
TYP.
0
MAX.
UNIT
%
-2
-3
2
3
Output Voltage Tolerance
VOUT+1 V < VIN < 6 V
Adjustable Pin Voltage
(ADJ version)
10 mA < IL < 3 A
VOUT+1.5 V < VIN < 6 V
1.117
1.110
1.174
1.188
VADJ
1.145
0.08
0.25
50
V
%/V
%
0.18
0.22
Line Regulation(Note 3)
ΔVLINE
ΔVLOAD
VOUT+1 V < VIN < 6 V
10 mA < IL < 3 A
IL = 300 mA
IL = 3 A
-
-
-
-
-
-
-
0.55
0.6
Load Regulation(Note 3, 4)
65
80
Dropout Voltage(Note 5)
VDROP
mV
uA
580
680
480
40
60
75
IL = 300 mA
IL = 3 A
Ground Pin Current(Note 6)
IGND1
60
75
40
60
75
Ground Pin Current(Note 7)
Output Peak Current
IGND2
IPEAK
TSD
VEN < 0.2 V
40
uA
A
4.5
3.5
4.5
165
10
-
-
-
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
-
-
-
℃
℃
V
ΔTSD
V
IN −0.5
Logic Low VIL
Logic High VIH
IEN
Output = Low
Output = High
VEN = VIN
0
2
Enable threshold
V
IN
+ 0.5
VIN
0.05
-
V
2
Enable Input Current
-
2
uA
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 3.0A
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.
Aug. 2010 - Rev. 1.7.1
- 6 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
TYPICAL OPERATING CHARACTERISTICS
Ambient Temperature vs. Output Voltage Change
Output Current vs. Dropout Voltage
Power Dissipation vs. Case Temperature, SOP8-PP
Power Dissipation vs. Case Temperature, TO252
Power Dissipation vs. Case Temperature, TO263
T.B.D.
Power Dissipation vs. Case Temperature, TO220
Aug. 2010 - Rev. 1.7.1
- 7 -
HTC
3.0A Ultra Low Dropout Linear Regulator
APPLICATION INFORMATION
TJ3966
Output Adjustment (Adjustable Version)
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+R2) resistor range of 1kꢀ to 100kꢀ
VOUT
⎛
⎝
⎞
⎠
R2 = R1
−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 TJ3966 can provide better
remote load regulation characteristics using the SENSE pin. TJ3966 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 TJ3966 regulates the voltage at the sense pin when the sense option pin
is used.
Output Capacitor
The TJ3966 requires a proper output capacitance to maintain stability and improve transient response
over current. The ESR of the output capacitor within the limits of 0.5ꢀ to 10ꢀ is required. A minimum
capacitance value of 22µF of tantalum or aluminum electrolytic capacitor is recommended. In a case of
ceramic capacitor, a minimum capacitance value of 10µF is required and additional resistance of
minimum 1ꢀ should be added with the output capacitor in series to maintain its minimum ESR. The
resistance and capacitance have to be varied upon the load current.
VOUT
ADJ
OUTPUT
VOUT
ADJ
OUTPUT
R2
R1
R2
R1
+
Additional Resistance
22µF
-
GND
GND
10µF
Aug. 2010 - Rev. 1.7.1
- 8 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
Maximum Output Current Capability
The TJ3966 can deliver a continuous current of 3.0A 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 3.0A
may be still undeliverable due to the restriction of the power dissipation of TJ3966. 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 θCA
/ TJ = TC + PD X θJC / TJ = TA + PD X θJA
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, θCA is the thermal resistance of case-to-ambient, θJC is the thermal
resistance of junction-to-case, and θJA 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
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, θJA, can be calculated using the
formula:
θJA = TRmax / PD = (TJmax – TAmax) / PD
TJ3966 is available in SOP8-PP, TO225, 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 θJA calculated
above is over 175°C/W for SOP8-PP package, over 105 °C/W for TO252 package, over 80 °C/W for
TO263 package, over 70 °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 θJA 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
Symbol
θJA-SOP8-PP
θJA-TO252
θJA-TO263
θJA-TO220
Rating
175
105
80
Unit
°C/W
°C/W
°C/W
°C/W
Thermal Resistance Junction-To-Ambient / SOP8-PP
Thermal Resistance Junction-To-Ambient / TO252
Thermal Resistance Junction-To-Ambient / TO263
Thermal Resistance Junction-To-Ambient / TO220
70
In case that there is no cooling solution and no heat sink / copper plane area for heat sink, the maximum
allowable power dissipation of each package is as follow;
Aug. 2010 - Rev. 1.7.1
- 9 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
Characteristic
Symbol
Rating
Unit
Maximum Allowable Power Dissipation at TA=25°C / SOP8-PP
Maximum Allowable Power Dissipation at TA=25°C / TO252
Maximum Allowable Power Dissipation at TA=25°C / TO263
Maximum Allowable Power Dissipation at TA=25°C / TO220
PDMax -SOP8-PP
PDMax -TO252
PDMax -TO263
PDMax -TO220
0.571
0.952
1.250
1.429
W
W
W
W
- Please note that above maximum allowable power dissipation is based on the minimum copper
plane area which does not exceed the proper footprint of the package. And the ambient
temperature is 25°C.
If proper cooling solution such as heat sink, copper plane area, air flow is applied, the maximum
allowable power dissipation could be increased. However, if the ambient temperature is increased, the
allowable power dissipation would be decreased.
For example, in case of TO263 package, θJA-TO263 is 80 °C/W, however, as shown in below graph, θJA
could be decreased with respect to the copper plane area. So, the specification of maximum power
dissipation for an application is fixed, the proper copper plane area could be estimated by following
graphs. As shown in graph, wider copper plane area leads lower θJA.
The maximum allowable power dissipation is also influenced by the ambient temperature. With the
above θJA-Copper plane area relationship, the maximum allowable power dissipation could be evaluated
with respect to the ambient temperature. As shown in graph, the higher copper plane area leads θJA.
And the higher ambient temperature leads lower maximum allowable power dissipation.
Aug. 2010 - Rev. 1.7.1
- 10 -
HTC
3.0A Ultra Low Dropout Linear Regulator
TJ3966
All this relationship is based on the aforesaid equation ; θJA = TRmax / PD = (TJmax – TAmax) / PD
T.B.D.
Aug. 2010 - Rev. 1.7.1
- 11 -
HTC
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| TJ4-1U2.7UH15% | VISHAY | General Fixed Inductor, 1 ELEMENT, 2.78 uH, GENERAL PURPOSE INDUCTOR, RADIAL LEADED | 获取价格 |
|
| TJ4-1U220UH15% | VISHAY | General Fixed Inductor, 1 ELEMENT, 219.28 uH, GENERAL PURPOSE INDUCTOR, RADIAL LEADED | 获取价格 |
|
| TJ4-1U33UH15% | VISHAY | General Fixed Inductor, 1 ELEMENT, 34.1 uH, GENERAL PURPOSE INDUCTOR, RADIAL LEADED | 获取价格 |
|
| TJ4-1U390UH15% | VISHAY | General Fixed Inductor, 1 ELEMENT, 392.59 uH, GENERAL PURPOSE INDUCTOR, RADIAL LEADED | 获取价格 |
|
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