UC385TDTR-ADJE3 [TI]
1.2 V-6V ADJUSTABLE POSITIVE LDO REGULATOR, 0.49V DROPOUT, PSSO5, GREEN, PLASTIC, TO-263, D2PAK-5;
| 型号： | UC385TDTR-ADJE3 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 1.2 V-6V ADJUSTABLE POSITIVE LDO REGULATOR, 0.49V DROPOUT, PSSO5, GREEN, PLASTIC, TO-263, D2PAK-5 输出元件 调节器 |
| 文件： | 总19页 (文件大小：875K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ꢀꢁ ꢂ ꢃꢄ ꢅꢆ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢂ ꢃ ꢄ ꢅꢉꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁ ꢈꢃ ꢄꢅ ꢉꢊ ꢋ
ꢌꢉꢍ ꢎ ꢎ ꢏꢉꢐꢍ ꢑꢒꢐ ꢎ ꢏꢒ ꢍꢓꢔ ꢐ ꢍꢒ ꢄꢅ ꢉ
ꢕ ꢔꢖꢅꢊꢏꢔ ꢓ ꢔꢀꢎ ꢏꢒꢗ ꢀ ꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
5-PIN TO-220
D
Fast Transient Response
T PACKAGE (TOP VIEW)
D
D
D
10-mA to 5-A Load Current
Short Circuit Protection
Maximum Dropout of 500-mV at 5-A Load
Current
D
Separate Bias (VB) and VIN Pins
D
Available in Adjustable or Fixed Output
Voltages
D
D
5-Pin Package Allows Kelvin Sensing of
Load Voltage
5-PIN TO-263
TD PACKAGE
(TOP VIEW)
Reverse Current Protection
Note: Tab = Ground
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
VB
1
R1
R2
UC382−ADJ
OPEN
2 kΩ
2 kΩ
0
UC382−1 (1.5 V)
UC382−2 (2.1 V)
UC382−3 (2.5 V)
500 Ω
1.5 k
Ω
2.16 k
Ω
2 k
Ω
THERMAL
SHUTDOWN
2
VIN
1.2 V
BANDGAP
REFERENCE
+
SHORT
CIRCUIT
SENSE
R2
R1
3
5
4
GND
ADJ
VOUT
UDG-00084
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.
All trademarks are the property of their respective owners.
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Copyright 1998−2009, Texas Instruments Incorporated
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ꢠ ꢤ ꢡ ꢠꢙ ꢚꢮ ꢜꢛ ꢟ ꢧꢧ ꢥꢟ ꢝ ꢟ ꢞ ꢤ ꢠ ꢤ ꢝ ꢡ ꢩ
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1
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ꢀ ꢁꢂꢃ ꢄꢅ ꢆꢇ ꢀ ꢁꢂ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢈ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢉ ꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢉꢊ ꢋ
ꢌꢉꢍ ꢎ ꢎ ꢏ ꢉꢐ ꢍꢑ ꢒꢐ ꢎ ꢏꢒ ꢍ ꢓꢔ ꢐꢍ ꢒ ꢄ ꢅꢉ
ꢕ ꢔꢖꢅꢊ ꢏ ꢔꢓꢔꢀ ꢎ ꢏꢒ ꢗ ꢀꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
†
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.
(1)
AVAILABLE OPTIONS
PACKAGED DEVICES
(2)
TO−263 (TD)
TO-220 (T)
T
J
OUTPUT VOLTAGE
OUTPUT VOLTAGE
1.5 V
285T-1
385T-1
2.1 V
285T-2
385T-2
2.5 V
285T-3
385T-3
1.2 V or ADJ
285T-ADJ
1.5 V
2.1 V
2.5 V
1.2 V or ADJ
285TD-ADJ
385TD-ADJ
–40°C to 100°C
0°C to 100°C
285TD-1
385TD-1
285TD-2
385TD-2
285TD-3
385TD-3
385T-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 T = −40°C to 100°C
A
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, T = T .
A
J
PARAMETER
UC385-3 Fixed 2.5 V, 5-A Family
Output voltage
TEST CONDITION
MIN
TYP
MAX UNIT
UC385-3
UC285-3
I
I
I
= 100 mA
2.475
2.45
2.5
2.5
0.5
110
65
2.525
2.525
4
V
V
VOUT
VOUT
VOUT
= 100 mA
Load regulation
= 10 mA to 5 A
mV
dB
dB
mV
mV
mV
V
VIN PSRR
80
50
VB PSRR
VIN dropout voltage (VIN - VOUT)
I
I
I
I
I
= 5 A,
= 5 A
= 5 A
= 5 A
= 5 A
T
J
= 25°C
350
350
350
1.8
1.8
425
490
500
2.1
2.2
7.5
15
VOUT
VOUT
VOUT
VOUT
VOUT
UC385-3
UC285-3
UC385-3
UC285-3
VB dropout (VB - VOUT)
V
Short circuit current limit
VB current
5.1
4.9
A
I
I
I
= 10 mA
= 5 A
8
40
mA
mA
A
VOUT
VOUT
VOUT
100
VIN current
= 5 A
4.96
UC385-2 Fixed 2.1 V, 5-A Family
Output voltage
UC385-2
UC285-2
I
I
I
= 100 mA
= 100 mA
2.079
2.058
2.1
2.1
0.5
110
67
2.121
2.121
4
V
V
VOUT
VOUT
VOUT
Load regulation
VIN PSRR
= 10 mA to 5 A
mV
dB
dB
80
50
VB PSRR
2
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ꢀꢁ ꢂ ꢃꢄ ꢅꢆ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢂ ꢃ ꢄ ꢅꢉꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀ ꢁꢈ ꢃꢄ ꢅꢉ ꢊꢋ
ꢌꢉꢍꢎ ꢎ ꢏꢉꢐꢍ ꢑꢒꢐ ꢎ ꢏꢒꢍ ꢓ ꢔꢐ ꢍ ꢒ ꢄꢅ ꢉ
ꢕ ꢔꢖꢅꢊꢏꢔ ꢓ ꢔꢀꢎ ꢏꢒꢗ ꢀ ꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
electrical characteristics unless otherwise stated, these parameters apply for T = −40°C to 100°C
A
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, T = T .
A
J
PARAMETER
UC385−2 Fixed 2.1 V, 5-A Family (continued)
VIN dropout voltage (VIN - VOUT)
TEST CONDITION
MIN
TYP
MAX UNIT
I
I
I
I
I
= 5 A,
= 5 A
= 5 A
= 5 A
= 5 A
T
J
= 25°C
350
350
350
1.8
425
490
500
2.1
2.2
7.5
15
mV
mV
mV
V
VOUT
VOUT
VOUT
VOUT
VOUT
UC385-2
UC285-2
UC385-2
UC285-2
VB dropout (VB - VOUT)
1.8
V
Short circuit current limit
VB current
5.1
4.9
A
I
I
I
= 10 mA
= 5 A
8
40
mA
mA
A
VOUT
VOUT
VOUT
100
VIN current
= 5 A
4.96
UC385−1 Fixed 1.5 V, 5-A Family
Output voltage
UC385-1
UC285-1
I
I
I
= 100 mA
= 100 mA
1.485
1.470
1.5
1.5
0.5
110
65
1.515
1.515
4
V
V
VOUT
VOUT
VOUT
Load regulation
= 10 mA to 5 A
mV
dB
dB
mV
mV
mV
V
VIN PSRR
80
50
VB PSRR
VIN dropout voltage (VIN - VOUT)
I
I
I
I
I
= 5 A,
5 A
T
J
= 25°C
350
350
350
1.8
1.8
425
490
500
2.1
2.2
7.5
15
VOUT
VOUT
VOUT
VOUT
VOUT
UC285-1
UC285-2
UC385-1
UC285-1
= 5 A
= 5 A
= 5 A
VB dropout (VB - VOUT)
V
Short circuit current limit
VB current
5.1
4.9
A
I
I
I
= 10 mA
= 5 A
8
40
mA
mA
A
VOUT
VOUT
VOUT
100
VIN = current
= 5 A
4.96
UC385-ADJ Adjustable, 5-A Family
ADJ voltage
UC385-ADJ
UC285-ADJ
I
I
I
- 100 mA
- 100 mA
1.188
1.176
1.2
1.2
0.5
110
65
1.212
1.212
4
V
V
VOUT
VOUT
VOUT
Load regulation
= 10 mA to 5 A
mV
dB
dB
mV
mV
mV
V
VIN PSRR
VOUT programmed for 2.5 V
Programmed for 2.5 V
80
50
VB PSRR VOUT
VIN dropout voltage (VIN - VOUT)
I
I
I
I
I
= 5 A,
= 5 A
= 5 A
= 5 A
= 5 A
T
J
= 25°C
350
350
350
1.8
1.8
425
490
500
2.1
2.2
7.5
15
VOUT
VOUT
VOUT
VOUT
VOUT
UC385-ADJ
UC285-ADJ
UC385-ADJ
UC285-ADJ
VB dropout (VB - VOUT)
V
Short circuit current limit
VB current
5.1
4.9
A
I
I
I
= 10 mA
= 5 A
8
40
mA
mA
A
VOUT
VOUT
VOUT
100
VIN current
= 5 A
4.96
3
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ꢀ ꢁꢂꢃ ꢄꢅ ꢆꢇ ꢀ ꢁꢂ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢈ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢉ ꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢉꢊ ꢋ
ꢌꢉꢍ ꢎ ꢎ ꢏ ꢉꢐ ꢍꢑ ꢒꢐ ꢎ ꢏꢒ ꢍ ꢓꢔ ꢐꢍ ꢒ ꢄ ꢅꢉ
ꢕ ꢔꢖꢅꢊ ꢏ ꢔꢓꢔꢀ ꢎ ꢏꢒ ꢗ ꢀꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
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 T = 0°C to 100°C. (Dropout is derated for junction
J
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.
DROPOUT VOLTAGE (VIN − VOUT)
DROPOUT VOLTAGE (VB − VOUT)
vs.
vs.
LOAD CURRENT
LOAD CURRENT
400
300
1.7
1.675
1.65
T
J
= 27°C
T
J
= 27°C
200
100
1.625
1.6
100m
5
0
1
4
2
3
5
I − Load Current − A
L
I − Load Current − A
L
Figure 1
Figure 2
4
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ꢀꢁ ꢂ ꢃꢄ ꢅꢆ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢂ ꢃ ꢄ ꢅꢉꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀ ꢁꢈ ꢃꢄ ꢅꢉ ꢊꢋ
ꢌꢉꢍꢎ ꢎ ꢏꢉꢐꢍ ꢑꢒꢐ ꢎ ꢏꢒꢍ ꢓ ꢔꢐ ꢍ ꢒ ꢄꢅ ꢉ
ꢕ ꢔꢖꢅꢊꢏꢔ ꢓ ꢔꢀꢎ ꢏꢒꢗ ꢀ ꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
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.
OPEN LOOP GAIN
vs.
FREQUENCY
FREQUENCY
0
70
60
C
= 100 µF
O
C
= 100 µF
O
I
L
= 1 A
I
L
= 1 A
50
40
30
−90
20
10
0
−180
−10
100
1 k
10 k
100 k
1 M
10 M
100
1 k
10 k
100 k
1 M
10 M
f − Frequency − Hz
f − Frequency − Hz
Figure 3
Figure 4
5
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ꢀ ꢁꢂꢃ ꢄꢅ ꢆꢇ ꢀ ꢁꢂ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢈ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢉ ꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢉꢊ ꢋ
ꢌꢉꢍ ꢎ ꢎ ꢏ ꢉꢐ ꢍꢑ ꢒꢐ ꢎ ꢏꢒ ꢍ ꢓꢔ ꢐꢍ ꢒ ꢄ ꢅꢉ
ꢕ ꢔꢖꢅꢊ ꢏ ꢔꢓꢔꢀ ꢎ ꢏꢒ ꢗ ꢀꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
APPLICATION INFORMATION
POWER SUPPLY REJECTION RATIO (VB INPUT)
vs.
FREQUENCY
60
50
40
30
20
10
0
100
1 k
10 k
100 k
1 M
10 M
f − Frequency − Hz
Figure 5
1
µ
+
_
F
Ceramic
5 V
1
IRF
520
V = 1.2 V
O
VB
2
VIN
VOUT
4
5
+
+
+
_
Pulse
Generator
121
R1
Ω
100
F
µ
UC385−ADJ
4.7
F
µ
Tantalum
Tantalum
ADJ
3.3 V
GND
3
UDG-00085
Figure 6. Transient Test Circuit
6
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ꢀ
ꢁ
ꢂ
ꢃꢄ
ꢅ
ꢆ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃꢄ
ꢅ
ꢂ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢈ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢉ
ꢊ
ꢋ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢆ
ꢇ
ꢀ
ꢁ
ꢈ
ꢌꢉꢍꢎ ꢎ ꢏꢉꢐꢍ ꢑꢒꢐ ꢎ ꢏꢒꢍ ꢓ ꢔꢐ ꢍ ꢒ ꢄꢅ ꢉ
ꢃ
ꢄ
ꢅ
ꢂ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢈ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢉ
ꢊ
ꢋ
ꢘ
ꢕ ꢔꢖꢅꢊꢏꢔ ꢓ ꢔꢀꢎ ꢏꢒꢗ ꢀ ꢕꢉꢎꢔ ꢏ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
APPLICATION INFORMATION
10 mA to 3 A/µs Load Transient Response
20
10
0
−10
−20
3
2
1
0
2 µs/DIV
Figure 7
+5 V
+
+
4.7 F
µ
Kelvin
Sense
Point
1
+3.3 V
VB
+1.8 V
Output
2
VIN
VOUT
4
5
F
+
R3
60
2.2µ
F
330µ
OSCON
UC385−ADJ
F
4.7µ
Ω
Ceramic
ADJ
GND
3
R4
120 Ω
UDG-00086
Figure 8. Typical UC385-ADJ Application
7
www.ti.com
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢆ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃ
ꢌꢉꢍ ꢎ ꢎ ꢏ ꢉꢐ ꢍꢑ ꢒꢐ ꢎ ꢏꢒ ꢍ ꢓꢔ ꢐꢍ ꢒ ꢄ ꢅꢉ
ꢄ
ꢅ
ꢂ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢈ
ꢇ
ꢀ
ꢁ
ꢂ
ꢃ
ꢄ
ꢅ
ꢉ
ꢊ
ꢋꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢆ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢂ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢈ
ꢇ
ꢀ
ꢁ
ꢈ
ꢃ
ꢄ
ꢅ
ꢉ
ꢊ
ꢋ
ꢘ
ꢕ ꢔꢖꢅꢊ ꢏ ꢔꢓꢔꢀ ꢎ ꢏꢒ ꢗ ꢀꢕꢉꢎꢔ ꢏ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
APPLICATION INFORMATION
+5 V
Kelvin
Sense
Point
+
F
µ
4.7
1
VB
+1.5 V
Output
2
VIN
VOUT
ADJ
4
5
+
F
µ
330
µF
2.2
UC385−1
OSCON
Ceramic
GND
3
UDG-00087
Figure 9. Typical UC385-1, -2, or -3 Application
8
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ꢀꢁ ꢂ ꢃꢄ ꢅꢆ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢅꢂ ꢇ ꢀꢁ ꢂ ꢃ ꢄ ꢅꢈ ꢇ ꢀꢁꢂ ꢃ ꢄ ꢅꢉꢊ ꢋꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢆ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢂ ꢇ ꢀꢁꢈ ꢃ ꢄ ꢅꢈ ꢇ ꢀ ꢁꢈ ꢃꢄ ꢅꢉ ꢊꢋ
ꢌꢉꢍꢎ ꢎ ꢏꢉꢐꢍ ꢑꢒꢐ ꢎ ꢏꢒꢍ ꢓ ꢔꢐ ꢍ ꢒ ꢄꢅ ꢉ
ꢕ ꢔꢖꢅꢊꢏꢔ ꢓ ꢔꢀꢎ ꢏꢒꢗ ꢀ ꢕꢉꢎꢔ ꢏ
ꢘ
SLUS212F − NOVEMBER 1999 − REVISED MAY 2009
Revision History
DATE
5/09
REV
PAGE
SECTION
Absolute Maximum Ratings Added VB.
DESCRIPTION
F
2
:
NOTE Page numbers for previous revisions may differ from page numbers in the current version.
9
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PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
PACKAGING INFORMATION
Orderable Device
Status Package Type Package Pins Package
Eco Plan Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
Top-Side Markings
Samples
Drawing
Qty
(1)
(2)
(3)
(4)
UC285T-1
OBSOLETE
ACTIVE
TO-220
TO-220
KC
5
5
TBD
TBD
Call TI
Call TI
Call TI
Call TI
-40 to 85
-40 to 85
UC285T-1
UC285T-1G3
KC
UC285T-3
UC285T-3G3
ACTIVE
ACTIVE
ACTIVE
ACTIVE
TO-220
TO-220
TO-220
TO-220
KC
KC
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
50
50
50
50
Green (RoHS
& no Sb/Br)
CU SN
CU SN
CU SN
CU SN
Call TI
Call TI
Call TI
Call TI
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
Call TI
-40 to 85
-40 to 85
-40 to 100
-40 to 100
-40 to 85
-40 to 85
-40 to 85
-40 to 100
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 100
-40 to 100
0 to 70
UC285T-3
Green (RoHS
& no Sb/Br)
UC285T-3
UC285T-ADJ
KC
Green (RoHS
& no Sb/Br)
UC285T-ADJ
UC285T-ADJ
UC285T-ADJG3
UC285TD-1
KC
Green (RoHS
& no Sb/Br)
OBSOLETE DDPAK/
TO-263
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KC
TBD
TBD
TBD
TBD
UC285TD-2
OBSOLETE DDPAK/
TO-263
Call TI
UC285TD-3
OBSOLETE DDPAK/
TO-263
Call TI
UC285TD-ADJ
UC285TDKTTT-1
UC285TDKTTT-1G3
UC285TDKTTT-3
UC285TDKTTT-3G3
UC285TDKTTT-ADJ
UC285TDKTTT-ADJG3
UC385T-1
OBSOLETE DDPAK/
TO-263
Call TI
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
DDPAK/
TO-263
50
50
50
50
50
50
50
Green (RoHS
& no Sb/Br)
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
N / A for Pkg Type
UC285TD-1
UC285TD-1
UC285TD-3
UC285TD-3
UC285TD-ADJ
UC285TD-ADJ
UC385T-1
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
TO-220
Green (RoHS
& no Sb/Br)
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
Orderable Device
Status Package Type Package Pins Package
Eco Plan Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
0 to 70
Top-Side Markings
Samples
Drawing
Qty
(1)
(2)
(3)
(4)
UC385T-1G3
UC385T-2
ACTIVE
TO-220
TO-220
TO-220
TO-220
TO-220
TO-220
TO-220
KC
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
50
Green (RoHS
& no Sb/Br)
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
Call TI
Call TI
Call TI
Call TI
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
N / A for Pkg Type
Call TI
UC385T-1
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
KC
KC
50
50
50
50
50
50
Green (RoHS
& no Sb/Br)
UC385T-2
UC385T-2
UC385T-3
UC385T-3
UC385T-ADJ
UC385T-ADJ
UC385T-2G3
Green (RoHS
& no Sb/Br)
UC385T-3
KC
Green (RoHS
& no Sb/Br)
UC385T-3G3
KC
Green (RoHS
& no Sb/Br)
UC385T-ADJ
KC
Green (RoHS
& no Sb/Br)
UC385T-ADJG3
UC385TD-1
KC
Green (RoHS
& no Sb/Br)
OBSOLETE DDPAK/
TO-263
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
TBD
TBD
TBD
TBD
UC385TD-2
OBSOLETE DDPAK/
TO-263
Call TI
UC385TD-3
OBSOLETE DDPAK/
TO-263
Call TI
UC385TD-ADJ
UC385TDKTTT-1
UC385TDKTTT-1G3
UC385TDKTTT-3
UC385TDKTTT-3G3
UC385TDKTTT-ADJ
UC385TDKTTT-ADJG3
UC385TDTR-1
OBSOLETE DDPAK/
TO-263
Call TI
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
DDPAK/
TO-263
50
50
Green (RoHS
& no Sb/Br)
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
UC385TD-1
UC385TD-1
UC385TD-3
UC385TD-3
UC385TD-ADJ
UC385TD-ADJ
UC385TD-1
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
50
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
50
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
50
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
50
Green (RoHS
& no Sb/Br)
DDPAK/
TO-263
500
Green (RoHS
& no Sb/Br)
Addendum-Page 2
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
Orderable Device
Status Package Type Package Pins Package
Eco Plan Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
0 to 70
Top-Side Markings
Samples
Drawing
Qty
(1)
(2)
(3)
(4)
UC385TDTR-1G3
UC385TDTR-3
ACTIVE
DDPAK/
TO-263
KTT
5
5
5
5
5
5
5
500
Green (RoHS
& no Sb/Br)
CU SN
CU SN
CU SN
CU SN
CU SN
CU SN
Call TI
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Level-2-260C-1 YEAR
Call TI
UC385TD-1
ACTIVE
ACTIVE
DDPAK/
TO-263
KTT
KTT
KTT
KTT
KTT
KC
500
500
500
500
500
Green (RoHS
& no Sb/Br)
0 to 70
UC385TD-3
UC385TDTR-3G3
UC385TDTR-ADJ
UC385TDTR-ADJE3
UC385TDTR-ADJG3
UC385TH-ADJ
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
0 to 70
UC385TD-3
ACTIVE
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
0 to 70
UC385TD-ADJ
UC385TD-ADJ
UC385TD-ADJ
ACTIVE
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
0 to 70
ACTIVE
DDPAK/
TO-263
Green (RoHS
& no Sb/Br)
0 to 70
OBSOLETE
TO-220
TBD
0 to 70
(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)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4)
Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a
continuation of the previous line and the two combined represent the entire Top-Side Marking for that device.
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
Addendum-Page 3
PACKAGE OPTION ADDENDUM
www.ti.com
11-Apr-2013
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.
Addendum-Page 4
PACKAGE MATERIALS INFORMATION
www.ti.com
9-Sep-2013
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
UC285TDKTTT-1
UC285TDKTTT-3
UC285TDKTTT-ADJ
UC385TDKTTT-1
UC385TDKTTT-3
UC385TDKTTT-ADJ
UC385TDTR-1
DDPAK/
TO-263
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
5
5
5
5
5
5
5
5
5
50
50
330.0
330.0
330.0
330.0
330.0
330.0
330.0
330.0
330.0
24.4
24.4
24.4
24.4
24.4
24.4
24.4
24.4
24.4
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
10.6
15.6
15.6
15.6
15.6
15.6
15.6
15.6
15.6
15.6
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
16.0
16.0
16.0
16.0
16.0
16.0
16.0
16.0
16.0
24.0
24.0
24.0
24.0
24.0
24.0
24.0
24.0
24.0
Q2
Q2
Q2
Q2
Q2
Q2
Q2
Q2
Q2
DDPAK/
TO-263
DDPAK/
TO-263
50
DDPAK/
TO-263
50
DDPAK/
TO-263
50
DDPAK/
TO-263
50
DDPAK/
TO-263
500
500
500
UC385TDTR-3
DDPAK/
TO-263
UC385TDTR-ADJ
DDPAK/
TO-263
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
9-Sep-2013
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
UC285TDKTTT-1
UC285TDKTTT-3
UC285TDKTTT-ADJ
UC385TDKTTT-1
UC385TDKTTT-3
UC385TDKTTT-ADJ
UC385TDTR-1
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
DDPAK/TO-263
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
KTT
5
5
5
5
5
5
5
5
5
50
50
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
367.0
45.0
45.0
45.0
45.0
45.0
45.0
45.0
45.0
45.0
50
50
50
50
500
500
500
UC385TDTR-3
UC385TDTR-ADJ
Pack Materials-Page 2
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