TL3317-285CKC [TI]
2.85V FIXED POSITIVE LDO REGULATOR, 1.5V DROPOUT, PSFM3, TO-220AB, 3 PIN;
| 型号： | TL3317-285CKC |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 2.85V FIXED POSITIVE LDO REGULATOR, 1.5V DROPOUT, PSFM3, TO-220AB, 3 PIN 局域网 输出元件 调节器 |
| 文件： | 总4页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL3317
HIGH-CURRENT LOW-DROPOUT REGULATORS
SLVS295 – APRIL 2000
KC PACKAGE
(TOP VIEW)
2.5-V, 2.85-V, 3.3-V, 5-V, and Adjustable Output
Voltage Options
3-A Output Current Capability
Operates Down to 1-V Dropout
INPUT
OUTPUT
ADJ/GND
Specified Dropout Voltage at Multiple
Current Levels With a 1.3-V (Max) Dropout at
3 A
The OUTPUT terminal is in electrical
contact with the mounting base.
0.2 % Line Regulation Maximum
0.4 % Load Regulation Maximum
Current Limiting and Thermal Protection
TO-220AB
I
O
A/GND
description
The TL3317-series devices are positive
low-dropout regulators, designed to provide an
output current in excess of 3 A. These devices are
available in 2.5-V, 2.85-V, 3.3-V, 5-V, and
adjustable output voltage options. All internal
circuitry is designed to operate down to 1-V
dropout voltage. The dropout voltage is specified
at a maximum of 1.3 V at 3 A, decreasing with
lower load currents. And, unlike pnp-type
regulators, where up to 10% of the output current
is wasted as quiescent current, the quiescent
current of the TL3317 flows into the load,
increasing the overall efficiency of the device.
KTE PACKAGE
(TOP VIEW)
INPUT
OUTPUT
ADJ/GND
The OUTPUT terminal is in electrical
contact with the mounting base.
The TL3317 requires a minimum of 10 µF output
capacitance for stability. Output capacitors of this
size, or larger, normally are included in most
regulator designs. The TL3317 series of
high-current adjustable and fixed-voltage LDO
regulators is intended for designs requiring a
low-cost solution for the regulation of low-voltage
power supplies in DVD-ROM drives, soundcards,
motherboards, consumer electronics, and
communications electronics. Typical applications
include high-efficiency linear regulators, battery
chargers, post regulation for switching power
supplies, constant-current regulators, and
microprocessor supplies.
I
O
A/GND
The TL3317C-series devices are characterized
for operation over the virtual junction temperature
range of 0°C to 125°C.
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.
Copyright 2000, Texas Instruments Incorporated
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL3317
HIGH-CURRENT LOW-DROPOUT REGULATORS
SLVS295 – APRIL 2000
AVAILABLE OPTIONS
PACKAGED DEVICES
V
TYP
(V)
O
PLASTIC
FLANGE-MOUNTED
(KTE)
T
J
HEAT-SINK MOUNTED
(KC)
2.5 V
2.85 V
3.3 V
5 V
TL3317-25CKC
TL3317-285CKC
TL3317-33CKC
TL3317-50CKC
TL3317CKC
TL3317-25CKTER
TL3317-285CKTER
TL3317-33CKTER
TL3317-50CKTER
TL3317CKTER
0°C
to
125°C
ADJ
The KTE package is only available taped and reeled.
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Continuous input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 V
Package thermal impedance, θ (see Notes 1 and 2): KC package . . . . . . . . . . . . . . . . . . . . . . . . . 22°C/W
JA
KTE package . . . . . . . . . . . . . . . . . . . . . . . . 23°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
†
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.
NOTES: 1. Maximum power dissipation is a function of T (max), θ , and T . The maximum allowable power dissipation at any allowable
J
JA
A
ambient temperature is P = (T (max) – T )/θ . Operating at the absolute maximum T of 150°C can affect reliability.
D
J
A
JA
J
2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN
MAX
16
UNIT
TL3317C
TL3317-25C
TL3317-285C
TL3317-33C
TL3317-50C
4.1
4.45
4.9
16
Input voltage, V
16
V
I
16
6.6
16
Output current, I
OUT
3
A
Operating virtual junction temperature range, T
0
125
°C
J
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL3317
HIGH-CURRENT LOW-DROPOUT REGULATORS
SLVS295 – APRIL 2000
electrical characteristics, T = 0°C to 125°C (unless otherwise noted)
J
†
PARAMETER
TEST CONDITIONS
= 3 V,
MIN
1.238
2.475
2.45
TYP
1.25
2.5
2.5
2.85
2.85
3.3
3.3
5
MAX
1.262
2.525
2.55
UNIT
V
– V
IN
OUT
= 10 mA, T = 25°C
TL3317
I
OUT
J
V
IN
= 5 V, I
= 10 mA, T = 25°C
J
OUT
TL3317-25
V
= 4.5 V to 10 V,
= 0 to 3 A
IN
I
OUT
V
IN
= 5 V, I
= 10 mA, T = 25°C
2.822
2.793
3.267
3.234
4.95
2.879
2.907
3.333
3.366
5.05
OUT
J
TL3317-285
TL3317-33
V
= 4.5 V to 10 V,
= 0 to 3 A
IN
Output voltage, V
OUT
V
I
OUT
V
IN
= 5 V, I
= 10 mA, T = 25°C
J
OUT
V
= 4.9 V to 15 V,
= 0 to 3 A
IN
I
OUT
V
IN
= 8 V, I
= 10 mA, T = 25°C
J
OUT
TL3317-50
TL3317
V
= 6.6 V to 16 V,
IN
4.9
5
5.1
I
I
= 0 to 3 A
= 10 mA
OUT
OUT
0.035%
0.2%
V
– V
= 1.5 V to 15 V
OUT
IN
TL3317-25
1
1
6
6
I
V
= 0 mA,
= 4.5 V to 10 V
OUT
IN
TL3317-285
Line regulation
I
V
= 0 mA,
= 4.9 V to 15 V
OUT
IN
mV
TL3317-33
TL3317-50
TL3317
1
1
6
10
I
V
= 0 mA,
= 6.6 V to 16 V
OUT
IN
I
V
= 10 mA to 3 A
OUT
IN
0.2%
0.4%
– V
= 3 V
OUT
TL3317-25
TL3317-285
TL3317-33
TL3317-50
3
4
10
15
Load regulation
I
= 0 to 3 A, V = 5 V
IN
OUT
mV
V
7
20
I
I
I
I
= 0 to 3 A, V = 8 V
IN
10
35
OUT
OUT
OUT
OUT
= 100 mA
= 1 A
1
1.1
1.3
1.5
Dropout voltage
Current limit
1.2
1.3
5.5
5
= 3 A
V
V
V
– V
– V
= 5 V,
T = 125°C
J
3.2
A
IN
IN
IN
OUT
OUT
Minimum load current
Quiescent current
Thermal regulation
= 15 V
TL3317
10
10
mA
mA
%/W
≤ 15 V (fixed-voltage devices)
5
30 ms pulse,
T = 25°C
J
0.004
75
0.02
TL3317
60
60
60
60
60
TL3317-25
TL3317-285
TL3317-33
TL3317-50
74
V
– V
= 3 V, f = 120 Hz,
OUT
IN
T = 25°C
Ripple rejection
73
dB
J
72
68
Output noise voltage (% of V
Temperature stability
Long-term stability
)
f = 10 Hz to 100 kHz
1000 hours,
0.003%
0.5%
0.3%
OUT
T
A
= 125°C
1%
†
All characteristics are measured with a 0.1-µF capacitor across the input and a 10-µF capacitor, with an ESR of less than 1 Ω, across the output.
Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature as possible.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated
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