TI PT6103

Application Notes
Mechanical Outline
Product Selector Guide
(800) 531-5782
For assistance or to order, call
PT6100
Series
1 AMP ADJUSTABLE POSITIVE STEP-DOWN
INTEGRATED SWITCHING REGULATOR
•
•
•
•
•
•
•
90% Efficiency
Adjustable Output Voltage
Internal Short Circuit Protection
Over-Temperature Protection
On/Off Control (Ground Off)
Small SIP Footprint
Meets Requirements for FCC
Part 15; Class B limits for Radiated
Emissions
• Wide Input Range
Pin-Out Information
Pin
Standard Application
VOADJ
12
VIN
2,3,4
PT6100
VOUT
9,10,11
1
5,6,7,8
C1
INH
C2
+
Q1
COM
COM
C1 = Optional 1µF ceramic
Q1 = NFET
C2 = Required 100µF electrolytic
Specifications
1
2
3
4
5
6
7
8
9
10
11
12
Function
Inhibit
(30V max)
Vin
Vin
Vin
GND
GND
GND
GND
Vout
Vout
Vout
Vout Adj
The PT6100 Series is a line of HighPerformance 1 Amp, 12-Pin SIP (Single In-line
Package) Integrated Switching Regulators (ISRs)
designed to meet the on-board power conversion
needs of battery powered or other equipment
requiring high efficiency and small size. This high
performance ISR family offers a unique
combination of features combining 90% typical
efficiency with open-collector on/off control and
adjustable output voltage. Quiescent current in
the shutdown mode is less than 100µA.
Ordering Information
PT Series Suffix (PT1234X)
PT6101o = +5 Volts
PT6102o = +3.3 Volts
PT6103o = +12 Volts
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
N
A
C
Pkg Style 200
PT6100 SERIES
Characteristics
(Ta =25°C unless noted)
Symbols
Conditions
Min
Typ
Max
Output Current
Io
Over Vin range
0.1*
—
1.0
A
Short Circuit Current
Isc
Vin = Vin min
—
3.5
—
Apk
Input Voltage Range
Vin
0.1 ≤ Io ≤ 1.0 A
∆Vo
Line Regulation
Load Regulation
Vo Ripple/Noise
Vo = 3.3V
—
—
30/38**
30/38**
26
V
Over Vin Range, Io = 1.0 A
Ta = 0°C to +60°C
—
±1.0
±2.0
%Vo
Regline
Over Vin range
—
±0.25
±0.5
%Vo
Regload
0.1 ≤ Io ≤ 1.0 A
—
±0.25
±0.5
%Vo
Vn
Vin=Vin min, Io=1.0 A
—
±2
—
%Vo
Transient Response
with Co = 100µF
ttr
Vos
50% load change
Vo over/undershoot
—
—
100
5.0
200
—
µSec
%Vo
Efficiency
η
Vin=9V, Io=0.5A, Vo=3.3V
Vin=9V, Io=0.5A, Vo=5V
Vin=16V, Io=0.5A, Vo=12V
—
—
—
84
89
91
—
—
—
%
%
%
Switching Frequency
ƒo
Over Vin and Io ranges
400
500
600
kHz
Shutdown Current
Quiescent Current
Isc
Inl
Vin = 15V
Io = 0A, Vin =10V
—
—
100
10
—
—
µA
mA
Output Voltage
Adjustment Range
Vo
Below Vo
Above Vo
See Application Notes.
Absolute Maximum
Operating Temperature Range
Ta
Recommended Operating
Temperature Range
Ta
Free Air Convection, Vo= 3.3V
(40-60LFM)
Vo= 5V
Vin=24V, Io=0.75A
Vo= 12V
Thermal Resistance
θja
Free Air Convection
(40-60LFM)
Storage Temperature
Ts
Output Voltage Tolerance
Vo = 5V
Vo = 12V
Vo = 3.3V
Vo = 5V
Vo = 12V
9
—
Units
9
16
(Note: inhibit function cannot
be used with Vin above 30V.)
V
V
-40
—
+85
°C
-40
-40
-40
—
—
—
+85***
+85***
+80***
°C
—
—
—
50
40
40
—
—
—
°C/W
-40
—
+125
°C
Mechanical Shock
Per Mil-STD-883D, Method 2002.3
1 msec, Half Sine, mounted to a fixture
—
500
—
G’s
Mechanical Vibration
Per Mil-STD-883D, Method 2007.2
20-2000 Hz, Soldered in a PC board
—
10
—
G’s
—
5.0
—
grams
Weight
* ISR will operate down to no load with reduced specifications.
** Input voltage cannot exceed 30V when the inhibit function is used.
***See Thermal Derating chart.
Note: The PT6100 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.
6
Revised 5/15/98
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
(800) 531-5782
For assistance or to order, call
PT6100
CHARACTERISTIC
DATA
PT6103, 12.0 VDC
(See Note 1)
(See Note 1)
Efficiency vs Output Current
Efficiency vs Output Current
Efficiency vs Output Current
100
100
90
Vin
80
9.0V
12.0V
70
15.0V
18.0V
26.0V
60
90
Vin
80
9.0V
12.0V
18.0V
24.0V
30.0V
38.0V
70
Efficiency - %
Efficiency - %
90
80
16.0V
20.0V
24.0V
70
30.0V
38.0V
60
60
50
50
40
40
50
0
0.2
0.4
0.6
0.8
0
1
0.2
0.4
0.6
0.8
1
40
0
Iout-(Amps)
Ripple vs Output Current
180
80
160
26.0V
18.0V
50
15.0V
12.0V
40
350
300
120
38.0V
30.0V
100
24.0V
18.0V
12.0V
80
9.0V
250
38.0V
20
40
100
10
20
50
0
0
0.2
0.4
Iout-(Amps)
Thermal Derating (Ta)
20.0V
16.0V
0
0
1
24.0V
150
60
0.8
30.0V
200
30
0.6
1
Vin
9.0V
0.4
0.8
400
Ripple-(mV)
60
0.6
Ripple vs Output Current
140
Vin
Ripple-(mV)
Ripple-(mV)
70
0.2
0.4
Iout-(Amps)
Ripple vs Output Current
90
0
0.2
Iout-(Amps)
0.6
0.8
1
0
0.2
0.4
Iout-(Amps)
Thermal Derating (Ta)
(See Note 2)
0.6
0.8
1
Iout-(Amps)
Thermal Derating (Ta)
(See Note 2)
(See Note 2)
50°C
1
1
1
70°C
70°C
85°C
0.4
0.2
85°C
Iout-(Amps)
0.6
0.6
0.4
12
15
18
21
24
27
Vin-(Volts)
85°C
0.4
0
0
9
0.6
0.2
0.2
0
70°C
0.8
0.8
Iout-(Amps)
0.8
Iout-(Amps)
60°C
9
12
15
18
21
24
27
30
33
36
16
39
18
20
22
24
Vin-(Volts)
(n
Power Dissipation vs Output Current
Power Dissipation vs Output Current
28
30
32
34
36
38
Power Dissipation vs Output Current
2
1.4
1
26
Vin-(Volts)
1.8
0.9
1.2
0.8
1.6
26.0V
0.6
18.0V
15.0V
0.5
12.0V
0.4
9.0V
0.3
Vin
1
38.0V
30.0V
24.0V
18.0V
12.0V
9.0V
0.8
0.6
PD-(Watts)
PD-(Watts)
0.7
PD-(Watts)
Vin
Vin
1.4
38.0V
1.2
30.0V
24.0V
1
20.0V
0.8
16.0V
0.6
0.4
0.2
0.4
0.2
0.1
0.2
0
0
0.2
0.4
0.6
Iout-(Amps)
0.8
1
0
0
0
0.2
0.4
0.6
0.8
1
0
0.2
Iout-(Amps)
0.4
0.6
0.8
1
Iout-(Amps)
Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
7
DATA SHEETS
PT6101, 5.0 VDC
(See Note 1)
Wide Input Range Products
PT6102, 3.3 VDC
100
Efficiency - %
Series
(800) 531-5782
For assistance or to order, call
Application
Notes
PT6100/6120/6210/6220/6300/6320 Series
More Application Notes
Adjusting the Output Voltage of the Wide Input
Range Bus ISRs
The output voltage of the Power Trends’ Wide Input Range
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 accordingly gives the allowable adjustment
range for each model for either series as Va (min) and Va (max).
Adjust Up:
An increase in the output voltage is obtained by
adding a resistor R2, between pin 12 (Vo adjust) and pins 5-8
(GND).
Figure 1
2,3,4
Vin
PT6100/6200/6300
Vin
Vo
GND
9,10,11
Vo
Vo(adj)
5,6,7,8
12
(R1)
Adj Down
C1
1µF Ceramic
(Optional)
C2
100 µF
(Req'd)
+
R2
Adjust Up
COM
COM
Adjust Down: Add a resistor (R1), between pin 12 (Vo adjust)
and pins 9-11(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 or
Vout. Any capacitance added to the Vo adjust pin will affect
the stability of the ISR.
4. Adjustments to the output voltage may place additional
limits on the maximum and minimum input voltage for the
part. The revised maximum and minimum input voltage
limits must comply with the following requirements. Note
that the minimum input voltage limits are also model dependant.
Vin (max)
= (8 x Va)V or *30/38V, whichever is less.
(R1)
=
Ro (Va – 1.25)
Vo – Va
kΩ
R2
=
1.25 Ro
Va – Vo
kΩ
Where: Vo = Original output voltage
Va = Adjusted output voltage
Ro = The resistance value fromTable 1
Table 1
ISR ADJUSTMENT RANGE AND FORMULA PARAMETERS
1Adc Rated
PT6x0x/PT6x1x series:
Vin (min)
= (Va + 4)V or 9V, whichever is highest.
3Adc Rated
PT6x2x series:
Vin (min)
*
2Adc Rated
= (Va + 2.5)V or 7.5V, whichever is highest.
Limit is 30V when inhibit function is used.
PT6102
PT6122
PT6213
PT6223
PT6303
PT6323
PT6101
PT6121
PT6103
PT6212
PT6222
PT6302
PT6322
PT6214
PT6304
Vo (nom)
Va (min)
3.3
5.0
5.0
12.0
1.89
1.88
2.18
2.43
Va (max)
Ω)
Ro (kΩ
6.07
11.25
8.5
22.12
66.5
150.0
90.9
243.0
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
3
For assistance or to order, call
(800) 531-5782
Application
PT6100/6120/6210/6220/6300/6320 Series
Notes
Table 2
ISR ADJUSTMENT RESISTOR VALUES
1Adc Rated
2Adc Rated
3Adc Rated
Vo (nom)
Va (req.d)
PT6102
PT6122
PT6213
PT6223
PT6303
PT6323
PT6101
PT6121
3.3
5.0
1Adc Rated
PT6212
PT6222
PT6302
PT6322
5.0
PT6101
PT6121
PT6214
PT6212
PT6222
PT6302
PT6322
2Adc Rated
PT6304
3Adc Rated
12.0
PT6103
Vo (nom)
Va (req.d)
5.0
5.0
PT6214
PT6304
12.0
1.9
(30.9)kΩ
(31.5)kΩ
6.2
156.0kΩ
94.7kΩ
(207.0)kΩ
2.0
(38.4)kΩ
(37.5)kΩ
6.4
134.0kΩ
81.2kΩ
(223.0)kΩ
2.1
(47.1)kΩ
(44.0)kΩ
6.6
117.0kΩ
71.0kΩ
(241.0)kΩ
2.2
(57.4)kΩ
(50.9)kΩ
(30.8)kΩ
6.8
104.0kΩ
63.1kΩ
(259.0)kΩ
2.3
(69.8)kΩ
(58.3)kΩ
(35.4)kΩ
7.0
93.8kΩ
56.8kΩ
(279.0)kΩ
2.4
(85.0)kΩ
(66.3)kΩ
(40.2)kΩ
7.2
85.2kΩ
51.6kΩ
(301.0)kΩ
2.5
(104.0)kΩ
(75.0)kΩ
(45.5)kΩ
(32.0)kΩ
7.4
78.1kΩ
47.3kΩ
(325.0)kΩ
2.6
(128.0)kΩ
(84.4)kΩ
(51.1)kΩ
(34.9)kΩ
7.6
72.1kΩ
43.7kΩ
(351.0)kΩ
2.7
(161.0)kΩ
(94.6)kΩ
(57.3)kΩ
(37.9)kΩ
7.8
67.0kΩ
40.6kΩ
(379.0)kΩ
2.8
(206.0)kΩ
(106.0)kΩ
(64.0)kΩ
(40.9)kΩ
8.0
62.5kΩ
37.9kΩ
(410.0)kΩ
2.9
(274.0kΩ
(118.0)kΩ
(71.4)kΩ
(44.1)kΩ
8.2
58.6kΩ
35.5kΩ
(444.0)kΩ
3.0
(388.0)kΩ
(131.0)kΩ
(79.5)kΩ
(47.3)kΩ
8.4
55.1kΩ
33.4kΩ
(483.0)kΩ
3.1
(615.0)kΩ
(146.0)kΩ
(88.5)kΩ
(50.5)kΩ
8.6
52.1kΩ
(525.0)kΩ
3.2
(1300.0)kΩ
(163.0)kΩ
(98.5)kΩ
(53.8)kΩ
8.8
49.3kΩ
(573.0)kΩ
(181.0)kΩ
(110.0)kΩ
(57.3)kΩ
9.0
46.9kΩ
(628.0)kΩ
3.3
3.4
831.0kΩ
(202.0)kΩ
(122.0)kΩ
(60.8)kΩ
9.5
41.7kΩ
(802.0)kΩ
3.5
416.0kΩ
(225.0)kΩ
(136.0)kΩ
(64.3)kΩ
10.0
37.5kΩ
(1060.0)kΩ
3.6
227.0kΩ
(252.0)kΩ
(153.0)kΩ
(68.0)kΩ
10.5
34.1kΩ
(1500.0)kΩ
3.7
208.0kΩ
(283.0)kΩ
(171.0)kΩ
(71.7)kΩ
11.0
31.3kΩ
3.8
166.0kΩ
(319.0)kΩ
(193.0)kΩ
(75.6)kΩ
11.5
3.9
139.0kΩ
(361.0)kΩ
(219.0)kΩ
(79.5)kΩ
12.0
4.0
119.0kΩ
(413.0)kΩ
(250.0)kΩ
(83.5)kΩ
12.5
608.0kΩ
4.1
104.0kΩ
(475.0)kΩ
(288.0)kΩ
(87.7)kΩ
13.0
304.0kΩ
4.2
92.4kΩ
(533.0)kΩ
(335.0)kΩ
(91.9)kΩ
13.5
203.0kΩ
4.3
83.1kΩ
(654.0)kΩ
(396.0)kΩ
(96.3)kΩ
14.0
152.0kΩ
4.4
75.6kΩ
(788.0)kΩ
(477.0)kΩ
(101.0)kΩ
14.5
122.0kΩ
4.5
69.3kΩ
(975.0)kΩ
(591.0)kΩ
(105.0)kΩ
15.0
101.0kΩ
4.6
63.9kΩ
(1260.0)kΩ
(761.0)kΩ
(110.0)kΩ
15.5
86.8kΩ
4.7
59.4kΩ
(1730.0)kΩ
(1050.0)kΩ
(115.0)kΩ
16.0
75.9kΩ
4.8
55.4kΩ
(1610.0)kΩ
(120.0)kΩ
16.5
67.5kΩ
4.9
52.0kΩ
(125.0)kΩ
17.0
60.8kΩ
5.0
48.9kΩ
(130.0)kΩ
17.5
55.2kΩ
5.1
46.2kΩ
1880.0kΩ
1140.0kΩ
(136.0)kΩ
18.0
50.6kΩ
5.2
43.8kΩ
937.0kΩ
568.0kΩ
(141.0)kΩ
18.5
46.7kΩ
5.3
41.6kΩ
625.0kΩ
379.0kΩ
(147.0)kΩ
19.0
43.4kΩ
5.4
39.6kΩ
469.0kΩ
284.0kΩ
(153.0)kΩ
19.5
40.5kΩ
5.5
37.8kΩ
375.0kΩ
227.0kΩ
(159.0)kΩ
20.0
38.0kΩ
5.6
36.1kΩ
313.0kΩ
189.0kΩ
(165.0)kΩ
20.5
35.7kΩ
5.7
34.6kΩ
268.0kΩ
162.0kΩ
(172.0)kΩ
21.5
33.8kΩ
5.8
33.3kΩ
234.0kΩ
142.0kΩ
(178.0)kΩ
21.5
32.0kΩ
5.9
32.0kΩ
208.0kΩ
126.0kΩ
(185.0)kΩ
22.0
30.4kΩ
30.8kΩ
R2 = Black
188.0kΩ
114.0kΩ
(192.0)kΩ
6.0
R1 = (Red)
4
ISR ADJUSTMENT RESISTOR VALUES (Cont)
PT6103
Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.powertrends.com
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