PT6681E [TI]
暂无描述;PT6680 Series
5 Amp 18-36V Input
Integrated Switching Regulator
SLTS098
(Revised 6/30/2000)
• Single Device: 5A Output
• Input Voltage Range: 18V to 36V
• Adjustable Output Voltage
• 80% Efficiency
• Remote Sense Capability
• Standby Function
trial applications requiring as much as
36V input and 5A of output current,
the PT6680 is packaged in a 14-Pin
SIP (Single In-line Package) and is
available in a surface-mount configu-
ration.
Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.
The PT6680 series is a new addi-
tion to Power Trends’ line of 24V bus
Integrated Switching Regulators (ISRs).
Designed for general purpose indus-
Pin-Out Information
Ordering Information PT Series Suffix
(PT1234X)
1
Remote Sense
Do Not Connect
STBY*- Standby
Vin
PT 6681! = +3.3 Volts
PT 6682! = +2.5 Volts
PT 6683! = +5.0 Volts
PT 6684! = +9.0 Volts
PT 6685! = +15.0 Volts
PT 6686! = +12.0 Volts
Case/Pin
Configuration
Heat
Heat Spreader
2
3
4
Spreader with Side Tabs
Standard Application
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
P
R
G
B
REMOTE SENSE
1
5
Vin
D
E
VIN
VOUT
4,5,6
3
11,12,13
6
Vin
PT6680
7
GND
7,8,9,10
+
+
LOAD
C1
C2
8
9
GND
GND
STBY
COM
Q1
COM
(1)
Pkg Style 400
PT6680
10GND
Note: Back surface
of product is
conducting metal
C1 = Required 560µF electrolytic
C2 = Required 330µF electrolytic
Q1= NFET-or Open Collector Gate
11
12
13
Vout
Vout
Vout
14
Vout Adjust
Specifications
PT6680 SERIES
Characteristics
(T = 25°C unless noted)
a
Symbols
Conditions
Min
Typ
Max
Units
(2)
(2)
Output Current
Io
Ta = 60°C, 200 LFM, pkg P
Ta = 25°C, natural convection
0.1
0.1
—
—
5.0
5.0
A
Input Voltage Range
Vin
0.1A ≤ Io ≤ Iomax
+18V
—
+36V
V
Output Voltage Tolerance
∆Vo
Over Vin range
Vo-0.1
—
Vo+0.1
V
V
Ta = -40°C to +65°C
Output Voltage Adjust Range
Voadj
Pin 14 to Vo or ground
Vo = +3.3V
Vo = +2.5V
Vo = +5.0V
Vo = +9.0V
2.2
1.8
3.0
6.0
—
—
—
—
4.7
4.3
6.5
10.2
13.6
17.0
Vo
=
+12V
9.0—
Vo = +15V
10.0
—
—
Line Regulation
Load Regulation
Vo Ripple/Noise
Regline
Regload
Vn
+18V≤Vin≤+36V, Io = Iomax
Vin = +28V, 0.1≤ Io≤ Iomax
Vin = +28V, Io = Iomax
0.5
0.5
1.0
1.0
%Vo
%Vo
—
Vo
Vo
<
>
+6V
—
50—
mVpp
+6V
1.0%Vo
Transient Response
with C2 = 330µF
ttr
Io step between 2.5A and 5.0A
Vo over/undershoot
—
—
100
—
—
µSec
mV
Vos
100
Efficiency
η
Vin = +28V, Io = Io max
Vo = +3.3V
Vo = +2.5V
Vo = +5.0V
Vo = +9.0V
Vo = +12.0V
Vo = +15.0V
—
—
—
—
—
—
78
73
82
87
88
90
—
—
—
—
—
—
%
Switching Frequency
ƒo
+18V ≤ Vin ≤ +36V
00k5H5z06500
-40—
Over Io range
Maximum Operating
Temperature Range
Ta
Over Vin range
(3)
+85
+125
500
°C
Storage Temperature
Mechanical Shock
Ts
—
—
—
-40—
—
°C
Per Mil-STD-883D, Method 2002.3
—
—
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, soldered in a PC board
—
—
7.5
14
G’s
Weight
—
—
grams
Notes (1) The 560µF electrolytic input capacitor must be rated for 1.5Arms ripple current. Both an input and output capacitor is required for proper operation.
(2) The ISR will operate down to no load with reduced specifications.
(3) Consult the SOA curves or contact the factory to determine the appropriate derating.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Typical Characteristics
PT6680 Series
5 Amp 18-36V Input
Integrated Switching Regulator
PT6681, V =3.3V (Note A)
out
Efficiency vs Output Current
90
85
80
75
70
65
60
55
50
VIN
18.0V
24.0V
36.0V
0
1
2
3
4
5
Iout (A)
Ripple vs Output Current
25
20
15
10
5
VIN
18.0V
24.0V
36.0V
0
0
1
2
3
4
5
Iout (A)
Power Dissipation vs Output Current
6
5
4
3
2
1
0
VIN
36.0V
24.0V
18.0V
0
1
2
3
4
5
Iout (A)
Note A: Characteristic data in the above graphs has been developed from actual products tested at 25°C. This data is considered typcial for the ISR.
Note B: SOA curves represent conditions at which internal components are at or below manufacturer’s maximum operating temperatures.
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Application Notes
PT6680 Series
Adjusting the Output Voltage of the
PT6680 5Amp 18-36V Bus Converter Series
Figure 1
The output voltage of the Power Trends PT6680 Series
ISRs may be adjusted higher or lower than the factory
trimmed pre-set voltage with the addition of a single
external resistor . Table 1 gives the respective allowable
adjustment range for each model in the series as Va (min)
and Va (max).
1
Vsense
4,5,6
11,12,13
Vin
Vo
Vin
PT6680
Vo
1
STBY
GND
Vo(adj)
3
7,8,9,10 14
(R1)
Adj Down
L
O
A
D
+
+
C in
Cout
Adjust Up:
An increase in the output voltage is
R2
Adjust
Up
obtained by adding a resistor R2, between pin 14 (Vo ad-
just) and pins 7-10 (GND).
C O M
C O M
Adjust Down:
Add a resistor (R1), between pin 14 (Vo
adjust) and pins 11-13 (Vout).
Refer to Figure 1 and Table 2 for both the placement and value
of the required resistor, either (R1) or R2 as appropriate.
The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.
Notes:
1. Use only a single 1% resistor in either the (R1) or R2
location. Place the resistor as close to the ISR as possible.
2. Never connect capacitors from Vo adjust to either GND,
Vout, or the Remote Sense pin. Any capacitance added to
the Vo adjust pin will affect the stability of the ISR.
3. If the Remote Sense feature is being used, connecting the
resistor (R1) between pin 14 (Vo adjust) and pin 1 (Remote
Sense) can benefit load regulation.
Ro (Vo – 1.25)(Va – 1.25)
(R1)
R2
=
=
– Rs kΩ
1.25 (Vo – Va)
Ro (Vo – 1.25)
Va - Vo
– Rs
kΩ
4. For output voltages above 10.0Vdc, the maximum output
current must be limited to 4Adc.
Where: Vo = Original output voltage
Va = Adjusted output voltage
5. Adjustments to the output voltage may place additional
limits on the input voltage for the part. The revised limits
must comply with the following requirements.
Ro = The resistance value in Table 1
Rs = The series resistance from Table 1
Vin (min)
= (Vout + 3)V or 18V,
whichever is higher.
= (10 x Vout )V or 36V,
whichever is less.
Vin (max)
Table 1
PT6680 ADJUSTMENT AND FORMULA PARAMETERS
Series Pt #
V (nom)
PT6682
PT6681
PT6683
PT6684
PT6686
PT6685
2.5V
1.8V
4.3V
4.99
2.49
3.3V
2.2V
4.7V
4.22
4.99
5.0V
3.0V
6.5V
2.49
4.99
9.0V
6.0V
12.0V
9.0V
15.0V
10.0V
17.0V
o
V (min)
a
V (max)
a
10.2V
13.6V
R
o
(kΩ)
2.02.02.0
12.7
R (kΩ)
s
12.7
12.7
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
Application Notes continued
PT6680 Series
Table 2
PT6680 ADJUSTMENT RESISTOR VALUES
Series Pt #
Current
PT6682
5Adc
PT6681
5Adc
PT6683
5Adc
Series Pt #
Current
PT6684
5Adc
PT6686
4Adc
PT6685
4Adc
V (nom)
o
2.5Vdc
3.3Vdc
5.0Vdc
V (nom)
o
9.0Vdc
12.0Vdc
15.0Vdc
V (req’d)
a
V (req’d)
a
6.0
6.2
(6.9)kΩ
(9.2)kΩ
1.8
1.9
(1.4)kΩ
(2.9)kΩ
(5.0)kΩ
(8.1)kΩ
(13.3)kΩ
(23.7)kΩ
(54.9)kΩ
6.4
(11.9)kΩ
(14.0)kΩ
(18.6)kΩ
(23.0)kΩ
(28.3)kΩ
(35.0)kΩ
(43.5)kΩ
(55.0)kΩ
(71.0)kΩ
(95.0)kΩ
(135.0)kΩ
(215.0)kΩ
(455.0)kΩ
2.0
6.6
2.1
6.8
2.2
(1.0)kΩ
(2.3)kΩ
7.0
2.3
7.2
2.4
(3.9)kΩ
7.4
2.5
(5.8)kΩ
7.6
2.6
59.9kΩ
28.7kΩ
18.3kΩ
13.1kΩ
10.0kΩ
7.9kΩ
6.4kΩ
5.3kΩ
4.4kΩ
3.8kΩ
3.2kΩ
2.7kΩ
2.3kΩ
2.0kΩ
Ω
(8.4)kΩ
7.8
2.7
(11.7)kΩ
(16.5)kΩ
(23.6)kΩ
(35.4)kΩ
(59.0)kΩ
(130.0)kΩ
8.0
2.8
8.2
2.9
8.4
3.0
(1.6)kΩ
(2.3)kΩ
8.6
3.1
8.8
3.2
(3.1)kΩ
9.0
(31.7)kΩ
(36.1)kΩ
(41.2)kΩ
(47.1)kΩ
(54.1)kΩ
(62.6)kΩ
(72.8)kΩ
(85.7)kΩ
(102.0)kΩ
(124.0)kΩ
(155.0)kΩ
(201.0)kΩ
(278.0)kΩ
(432.0)kΩ
(895.0)kΩ
3.3
(4.0)kΩ
9.2
64.8kΩ
26.1kΩ
13.1kΩ
6.7kΩ
2.8kΩ
3.4
81.5kΩ
38.3kΩ
23.8kΩ
16.6kΩ
12.3kΩ
9.4kΩ
7.4kΩ
5.8kΩ
4.6kΩ
3.7kΩ
2.9kΩ
2.2kΩ
1.7kΩ
1.2kΩ
(5.1)kΩ
9.4
3.5
(6.2)kΩ
9.6
3.6
(7.6)kΩ
9.8
3.7
(9.1)kΩ
10.0
10.2
10.4
10.6
10.8
11.0
11.2
11.4
11.6
11.8
12.0
12.2
12.4
12.6
12.8
13.08.8k
13.2
13.4
13.6
13.8
14.0
14.2
14.5
15.0
15.5
16.014.8k
16.5
17.01.1k
(25.8)kΩ
(28.3)kΩ
(31.1)kΩ
(34.1)kΩ
(37.3)kΩ
(40.9)kΩ
(44.9)kΩ
(49.3)kΩ
(54.3)kΩ
(59.8)kΩ
(66.1)kΩ
(73.3)kΩ
(81.6)kΩ
(91.3)kΩ
(103.0)kΩ
(117.0)kΩ
(133.0)kΩ
(154.0)kΩ
(181.0)kΩ
(217.0)kΩ
(268.0)kΩ
(343.0)kΩ
(570.0)kΩ
3.8
(10.9)kΩ
(13.0)kΩ
(15.6)kΩ
(18.7)kΩ
(22.6)kΩ
(27.6)kΩ
(34.2)kΩ
(43.6)kΩ
(57.6)kΩ
(80.9)kΩ
(128.0)kΩ
(268.0)kΩ
0.2kΩ
3.9
4.01.7k
4.1
1.4kΩ
1.2kΩ
1.0kΩ
4.2
4.3
4.4
4.5
4.6
4.7
4.8
94.8kΩ
41.1kΩ
23.1kΩ
14.2kΩ
Ω
4.9
5.0
5.1
88.4kΩ
41.7kΩ
26.1kΩ
18.4kΩ
13.7kΩ
10.6kΩ
8.4kΩ
6.7kΩ
5.4kΩ
Ω
5.2
5.3
5.2kΩ
2.7kΩ
0.7kΩ
5.4
5.5
5.6
5.7
5.8
5.9
6.04.4k
6.1
3.5kΩ
2.8kΩ
2.2kΩ
1.7kΩ
1.2kΩ
42.3kΩ
Ω
6.2
6.3
5.6kΩ
Ω
6.4
6.5
R1 = (Blue)
R2 = Black
For technical support and more information, see inside back cover or visit www.ti.com/powertrends
PACKAGE OPTION ADDENDUM
www.ti.com
30-Aug-2012
PACKAGING INFORMATION
Status (1)
Eco Plan (2)
MSL Peak Temp (3)
Samples
Orderable Device
Package Type Package
Drawing
Pins
Package Qty
Lead/
Ball Finish
(Requires Login)
PT6681B
PT6683P
PT6683R
PT6685P
PT6685R
PT6686B
OBSOLETE SIP MODULE
OBSOLETE SIP MODULE
EEK
14
14
14
14
14
14
TBD
TBD
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
Call TI
EED
EEE
EED
EEE
EEK
Call TI
NRND
NRND
SIP MODULE
SIP MODULE
12
12
Pb-Free (RoHS)
Pb-Free (RoHS)
TBD
N / A for Pkg Type
N / A for Pkg Type
Call TI
OBSOLETE SIP MODULE
OBSOLETE SIP MODULE
TBD
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)
(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.
Addendum-Page 1
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