SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
1
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DFast Transient Response
D10-mA to 5-A Load Current
DShort Circuit Protection
DMaximum Dropout of 500-mV at 5-A Load
Current
DSeparate Bias (VB) and VIN Pins
DAvailable in Adjustable or Fixed Output
Voltages
D5-Pin Package Allows Kelvin Sensing of
Load Voltage
DReverse Current Protection
description
The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined with
its precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response to
load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased
when compared to standard LDO linear regulators.
Dropout voltage (VIN to VOUT) is only 490 mV maximum and 350 mV typical at 5-A load (0°C to 100°C).
The onboard bandgap reference is stable with temperature and scaled for a 1.2 V input to the internal power
amplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the
adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage
defaults to 1.2 V.
block diagram
+
THERMAL
SHUTDOWN
1.2 V
BANDGAP
REFERENCE
R2
R1
3 5
SHORT
CIRCUIT
SENSE
2
1
4
UC382−ADJ
UC382−1 (1.5 V)
UC382−2 (2.1 V)
UC382−3 (2.5 V)
OPEN 0
2 k 500 Ω
2 k 1.5 kΩ
2 k 2.16 k Ω
R1 R2
ADJGND VOUT
VIN
VB
UDG-00084
Ω
Ω
Ω
Copyright 1998−2009, Texas Instruments Incorporated
!" # $%&" !# '%()$!" *!"&+
*%$"# $ " #'&$$!"# '& ",& "&# &-!# #"%&"#
#"!*!* .!!"/+ *%$" '$&##0 *&# " &$&##!)/ $)%*&
"&#"0 !)) '!!&"&#+
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
5-PIN TO-263
TD PACKAGE
(TOP VIEW)
5-PIN TO-220
T PACKAGE (TOP VIEW)
Note: Tab = Ground
All trademarks are the property of their respective owners.
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
2www.ti.com
absolute maximum ratings over operating free-air temperature (unless otherwise noted)†
VB 13 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIN 7.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage 1.2 V to −6.0 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction temperature −55°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature (soldering, 10 seconds) 300°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
AVAILABLE OPTIONS(1)
PACKAGED DEVICES
TJ
TO-220 (T) TO−263 (TD)(2)
T
JOUTPUT VOLTAGE OUTPUT VOLTAGE
1.5 V 2.1 V 2.5 V 1.2 V or ADJ 1.5 V 2.1 V 2.5 V 1.2 V or ADJ
–40°C to 100°C 285T-1 285T-2 285T-3 285T-ADJ 285TD-1 285TD-2 285TD-3 285TD-ADJ
0°C to 100°C 385T-1 385T-2 385T-3 385T-ADJ 385TD-1 385TD-2 385TD-3 385TD-ADJ
1. For more package and ordering information, see the Package Option Addendum located at the end of this data sheet.
2. For 50 piece reel, add KTTT (e.g., UC285TDKTTT−1); for 500 piece reel, add TR (e.g., UC285TDTR−1).
electrical characteristics unless otherwise stated, these parameters apply for TA = −40°C to 100°C
for the UC285-x series and 0°C to 100°C for the UC385-x, VB = 5 V ; VIN = 3.3 V, VOUT = 2.5 V, TA = TJ.
PARAMETER TEST CONDITION MIN TYP MAX UNIT
UC385-3 Fixed 2.5 V, 5-A Family
Output voltage UC385-3 IVOUT = 100 mA 2.475 2.5 2.525 V
Output voltage
UC285-3 IVOUT = 100 mA 2.45 2.5 2.525 V
Load regulation IVOUT = 10 mA to 5 A 0.5 4 mV
VIN PSRR 80 110 dB
VB PSRR 50 65 dB
VIN dropout voltage (VIN - VOUT) IVOUT = 5 A, TJ = 25°C 350 425 mV
VIN dropout voltage (VIN - VOUT)
UC385-3 IVOUT = 5 A 350 490 mV
UC285-3 IVOUT = 5 A 350 500 mV
VB dropout (VB - VOUT) UC385-3 IVOUT = 5 A 1.8 2.1 V
VB dropout (VB - VOUT)
UC285-3 IVOUT = 5 A 1.8 2.2 V
Short circuit current limit 5.1 7.5 A
VB current IVOUT = 10 mA 8 15 mA
VB current
IVOUT = 5 A 40 100 mA
VIN current IVOUT = 5 A 4.9 4.96 A
UC385-2 Fixed 2.1 V, 5-A Family
Output voltage UC385-2 IVOUT = 100 mA 2.079 2.1 2.121 V
Output voltage
UC285-2 IVOUT = 100 mA 2.058 2.1 2.121 V
Load regulation IVOUT = 10 mA to 5 A 0.5 4 mV
VIN PSRR 80 110 dB
VB PSRR 50 67 dB
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
3
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electrical characteristics unless otherwise stated, these parameters apply for TA = −40°C to 100°C
for the UC285-x series and 0°C to 100°C for the UC385-x, VB = 5 V ; VIN = 3.3 V, VOUT = 2.5 V, TA = TJ.
PARAMETER TEST CONDITION MIN TYP MAX UNIT
UC385−2 Fixed 2.1 V, 5-A Family (continued)
VIN dropout voltage (VIN - VOUT) IVOUT = 5 A, TJ = 25°C 350 425 mV
VIN dropout voltage (VIN - VOUT)
UC385-2 IVOUT = 5 A 350 490 mV
UC285-2 IVOUT = 5 A 350 500 mV
VB dropout (VB - VOUT) UC385-2 IVOUT = 5 A 1.8 2.1 V
VB dropout (VB - VOUT)
UC285-2 IVOUT = 5 A 1.8 2.2 V
Short circuit current limit 5.1 7.5 A
VB current IVOUT = 10 mA 8 15 mA
VB current
IVOUT = 5 A 40 100 mA
VIN current IVOUT = 5 A 4.9 4.96 A
UC385−1 Fixed 1.5 V, 5-A Family
Output voltage UC385-1 IVOUT = 100 mA 1.485 1.5 1.515 V
Output voltage
UC285-1 IVOUT = 100 mA 1.470 1.5 1.515 V
Load regulation IVOUT = 10 mA to 5 A 0.5 4 mV
VIN PSRR 80 110 dB
VB PSRR 50 65 dB
VIN dropout voltage (VIN - VOUT) IVOUT = 5 A, TJ = 25°C 350 425 mV
VIN dropout voltage (VIN - VOUT)
UC285-1 IVOUT 5 A 350 490 mV
UC285-2 IVOUT = 5 A 350 500 mV
VB dropout (VB - VOUT) UC385-1 IVOUT = 5 A 1.8 2.1 V
VB dropout (VB - VOUT)
UC285-1 IVOUT = 5 A 1.8 2.2 V
Short circuit current limit 5.1 7.5 A
VB current IVOUT = 10 mA 8 15 mA
VB current
IVOUT = 5 A 40 100 mA
VIN = current IVOUT = 5 A 4.9 4.96 A
UC385-ADJ Adjustable, 5-A Family
ADJ voltage UC385-ADJ IVOUT - 100 mA 1.188 1.2 1.212 V
ADJ voltage
UC285-ADJ IVOUT - 100 mA 1.176 1.2 1.212 V
Load regulation IVOUT = 10 mA to 5 A 0.5 4 mV
VIN PSRR VOUT programmed for 2.5 V 80 110 dB
VB PSRR VOUT Programmed for 2.5 V 50 65 dB
VIN dropout voltage (VIN - VOUT) IVOUT = 5 A, TJ = 25°C 350 425 mV
VIN dropout voltage (VIN - VOUT)
UC385-ADJ IVOUT = 5 A 350 490 mV
UC285-ADJ IVOUT = 5 A 350 500 mV
VB dropout (VB - VOUT) UC385-ADJ IVOUT = 5 A 1.8 2.1 V
VB dropout (VB - VOUT)
UC285-ADJ IVOUT = 5 A 1.8 2.2 V
Short circuit current limit 5.1 7.5 A
VB current IVOUT = 10 mA 8 15 mA
VB current
IVOUT = 5 A 40 100 mA
VIN current IVOUT = 5 A 4.9 4.96 A
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
4www.ti.com
pin descriptions
ADJ: In the adjustable version, the user programs the output voltage with two external resistors. The resistors
should be 0.1% for high accuracy. The output amplifier is configured as a noninverting operational amplifier. The
resistors should meet the criteria of R3 || R4 < 100 Ω. Connect ADJ to VOUT for an output voltage of 1.2 V. Note
that the point at which the feedback network is connected to the output is the Kelvin sense point.
GND: For accurate results, the GND pin should be referenced to the load ground.
VB: Supplies power to all circuits of the regulator except the output power transistor. The 2-V headroom from
VB to VOUT allows the use of a Darlington output stage for inherently low output impedance and fast response.
(Dropout is derated for junction temperatures below 0°C.)
VIN: Supplies the current to the collector of the output power transistor only. The dropout (VIN-VOUT) is under
100 mV for light loads; maximum dropout is 490 mV at 5 A for TJ = 0°C to 100°C. (Dropout is derated for junction
temperatures over 100°C.)
VOUT: This pin should be connected to the load via a low impedance path. Avoid connectors which add
significant inductance and resistance. Note that even though a Kelvin sense is available through a 5-pin
package, care must be taken since voltage drops along wire traces add to the dropout voltage.
Figure 1
DROPOUT VOLTAGE (VB − VOUT)
vs.
LOAD CURRENT
1.6
1.7
0
5
4
32
1
1.625
1.65
1.675
IL− Load Current − A
VDO − Dropout Voltage (VB − VOUT) − V
TJ = 27°C
Figure 2
DROPOUT VOLTAGE (VIN − VOUT)
vs.
LOAD CURRENT
100
200
300
400
100m
5
IL− Load Current − A
VDO - Dropout Voltage (VIN − VOUT) − mV
TJ = 27°C
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
5
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APPLICATION INFORMATION
The UC385 is easy to use. The adjustable version requires two resistors to set the output voltage. The fixed
versions of the UC385 require no external resistors. All versions of the UC385 require decoupling capacitors
on the input and output. In a typical application, VB and VIN are driven from switching power supplies which
may have large filter capacitors at their outputs. If the UC385 is further than 12 inches from the power supply,
it is recommended to add local decoupling as close as possible to the linear regulator.
Decouple the output of the UC385 with at least 100 µF of high quality tantalum or Sanyo OSCON capacitors
close to the VOUT pin for maximum stability. Many applications involving ultrafast GTL or BTL applications
require additional capacitance close to the load. The exact amount will vary according to speed and magnitude
of the load transients and the tolerance allowed for transients on VOUT. When specifying the decoupling
capacitors, the series resistance of the capacitor bank is an important factor in its ability to filter load transients.
The UC385 allows for Kelvin sensing the voltage at the load. This improves regulation performance and
eliminates the voltage drops due to wire trace resistance. This voltage drop must be added to the headroom
(VIN to VOUT and VB to VOUT). The dropout of 350 mV is measured at the pins and does not include additional
drops due to trace resistance.
OPEN LOOP PHASE
vs.
FREQUENCY
f − Frequency − Hz
Phase - deg
10
M
1 M100 k10 k1 k100
−180
−90
0
Figure 3
CO = 100 µF
IL = 1 A
Figure 4
OPEN LOOP GAIN
vs.
FREQUENCY
10
M
1 M100 k10 k1 k100
−10
0
10
20
30
40
50
60
70
f − Frequency − Hz
Gain - dB
CO = 100 µF
IL = 1 A
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
6www.ti.com
APPLICATION INFORMATION
Figure 5
POWER SUPPLY REJECTION RATIO (VB INPUT)
vs.
FREQUENCY
PSSR - Power Supply Rejection Ratio (VB Input) − dB
10 M1 M100 k10 k1 k100
0
10
20
30
40
50
60
f − Frequency − Hz
UDG-00085
4
5
1
2
3
ADJ
VOUT
VB
VIN
GND
4.7µF
Tantalum
1µF
Ceramic
100µF
Tantalum 121Ω
R1
UC385−ADJ Pulse
Generator
VO
= 1.2 V IRF
520
++
5 V
3.3 V
_
+
_
+
Figure 6. Transient Test Circuit
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
7
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APPLICATION INFORMATION
Figure 7
10 mA to 3 A/µs Load Transient Response
3
2
1
0
− Load Current − A
IO
20
10
0
−10
−20
VO− Change in∆
Output Voltage − mV
2 µs/DIV
UDG-00086
4
5
1
2
3
ADJ
VOUT
VB
VIN
GND
4.7µF
+3.3 V
4.7µF
+5 V
330µF
OSCON
UC385−ADJ
Kelvin
Sense
Point
2.2µF
Ceramic
R3
60 Ω
R4
120Ω
+1.8 V
Output
+
++
Figure 8. Typical UC385-ADJ Application
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
8www.ti.com
APPLICATION INFORMATION
UDG-00087
4
5
1
2
3
ADJ
VOUT
VB
VIN
GND
4.7µF
+5 V
330µF
OSCON
UC385−1
Kelvin
Sense
Point
2.2µF
Ceramic
+1.5 V
Output
+
+
Figure 9. Typical UC385-1, -2, or -3 Application
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
9
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Revision History
DATE REV PAGE SECTION DESCRIPTION
5/09 F 2 Absolute Maximum Ratings Added VB.
NOTE:Page numbers for previous revisions may differ from page numbers in the current version.
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
UC285T-1 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285T-1G3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285T-3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285T-3G3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285T-ADJ ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285T-ADJG3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC285TD-1 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC285TD-2 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC285TD-3 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC285TD-ADJ OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC285TDKTTT-1 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC285TDKTTT-1G3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC285TDKTTT-3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC285TDKTTT-3G3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC285TDKTTT-ADJ ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC285TDKTTT-ADJG3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385T-1 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-1G3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-2 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-2G3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-3G3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-ADJ ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385T-ADJG3 ACTIVE TO-220 KC 5 50 Green (RoHS &
no Sb/Br) CU SN N / A for Pkg Type
UC385TD-1 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
PACKAGE OPTION ADDENDUM
www.ti.com 28-Apr-2009
Addendum-Page 1
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
UC385TD-2 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC385TD-3 OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC385TD-ADJ OBSOLETE DDPAK/
TO-263 KTT 5 TBD Call TI Call TI
UC385TDKTTT-1 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDKTTT-1G3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDKTTT-3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDKTTT-3G3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDKTTT-ADJ ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDKTTT-ADJG3 ACTIVE DDPAK/
TO-263 KTT 5 50 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-1 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-1G3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-3G3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-ADJ ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-ADJE3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TDTR-ADJG3 ACTIVE DDPAK/
TO-263 KTT 5 500 Green (RoHS &
no Sb/Br) CU SN Level-2-260C-1 YEAR
UC385TH-ADJ OBSOLETE TO-220 KC 5 TBD Call TI Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
PACKAGE OPTION ADDENDUM
www.ti.com 28-Apr-2009
Addendum-Page 2
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 28-Apr-2009
Addendum-Page 3
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0 (mm) B0 (mm) K0 (mm) P1
(mm) W
(mm) Pin1
Quadrant
UC285TDKTTT-1 DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC285TDKTTT-3 DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC285TDKTTT-ADJ DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDKTTT-1 DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDKTTT-3 DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDKTTT-ADJ DDPAK/
TO-263 KTT 5 50 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDTR-1 DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDTR-3 DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
UC385TDTR-ADJ DDPAK/
TO-263 KTT 5 500 330.0 24.4 10.6 15.6 4.9 16.0 24.0 Q2
PACKAGE MATERIALS INFORMATION
www.ti.com 28-Apr-2009
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
UC285TDKTTT-1 DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC285TDKTTT-3 DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC285TDKTTT-ADJ DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC385TDKTTT-1 DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC385TDKTTT-3 DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC385TDKTTT-ADJ DDPAK/TO-263 KTT 5 50 346.0 346.0 41.0
UC385TDTR-1 DDPAK/TO-263 KTT 5 500 346.0 346.0 41.0
UC385TDTR-3 DDPAK/TO-263 KTT 5 500 346.0 346.0 41.0
UC385TDTR-ADJ DDPAK/TO-263 KTT 5 500 346.0 346.0 41.0
PACKAGE MATERIALS INFORMATION
www.ti.com 28-Apr-2009
Pack Materials-Page 2
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