PT6342 [TI]

6-A 12-V Input Adjustable Integrated Switching Regulator; 6 -A 12 - V输入可调集成开关稳压器
PT6342
型号: PT6342
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

6-A 12-V Input Adjustable Integrated Switching Regulator
6 -A 12 - V输入可调集成开关稳压器

稳压器 开关
文件: 总9页 (文件大小:175K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
PT6340 Series  
6-A 12-V Input Adjustable  
Integrated Switching Regulator  
SLTS138A  
Revised (2/15/2002)  
Features  
6A Output Current  
Input Voltage Range:  
10.8 V to 13.2 V  
90% Efficiency  
Adjustable Output Voltage  
Standby Function  
Short Circuit Protection  
Small Footprint (0.61 in2)  
Solderable Copper Case  
6
8.8 10 Hours MTBF  
Description  
Ordering Information  
Pin-Out Information  
PT 6341r = 5.0 Volts  
PT 6342r = 3.3 Volts  
PT 6343r = 2.5 Volts  
PT 6344r = 1.8 Volts  
PT 6345r = 1.5 Volts  
PT 6346r = 1.2 Volts  
The PT6340 Excalibur™ power modules  
are a series of high performance Integrated  
Switching Regulators (ISRs), housed in a  
thermally efficient solderable copper case.  
These modules operate from a 12V input  
voltage bus to produce a high-output low-  
voltage power source; ideal for powering the  
industry’s latest DSP and microprocessors.  
The series includes standard output bus  
voltages ranging from 5VDC to 1.2VDC.  
The innovative copper case construction  
provides superior thermal performance in a  
small footprint. Both through-hole and  
surface mount pin configurations are avail-  
able. The PT6340 series operating features  
include external output voltage adjustment,  
an On/Off inhibit, and short-circuit protection.  
A 100µF input, and 330µF output capacitor  
are required for proper operation.  
Pin Function  
1
2
3
4
5
6
7
8
9
Inhibit *  
Vin  
Vin  
Vin  
GND  
GND  
GND  
GND  
Vout  
PT Series Suffix  
(PT1234x)  
10 Vout  
11 Vout  
12 Vout Adj *  
Case/Pin  
Configuration  
O rder  
Suffix  
Package  
Code *  
Vertical  
Horizontal  
SMD  
N
A
C
(EPH)  
(EPJ)  
(EPK)  
*
For further information, see  
application notes.  
* Previously known as package styles 1540/50.  
(Reference the applicable package code drawing  
for the dimensions and PC board layout)  
Standard Application  
VO(ADJ)  
INH  
1
12  
+VIN  
+VOUT  
2,3,4  
9,10,11  
PT6340  
+
+
5,6,7,8  
CIN  
COUT  
GND  
GND  
Cin = Required 100µF electrolytic  
Cout = Required 330µF electrolytic  
For technical support and more information, see inside back cover or visit www.ti.com  
PT6340 Series  
6-A 12-V Input Adjustable  
Integrated Switching Regulator  
Specifications (Unless otherwise stated, Ta =25°C, Vin =12V, Cin =100µF, Cout =330µF, and Io =Iomax)  
PT6340 SERIES  
Typ  
Characteristic  
Symbol  
Conditions  
Min  
Max  
Units  
(1)  
(1)  
Output Current  
Io  
Ta =+60°C, 200LFM  
0.1  
0.1  
6
6
A
Ta =+25°C, natural convection  
Input Voltage Range  
Set Point Voltage Tolerance  
Temperature Variation  
Line Regulation  
Load Regulation  
Total Output Voltage Variation  
Vin  
Over Io Range  
10.8  
1
0.5  
5
13.2  
2
10  
15  
VDC  
%Vo  
%Vo  
mV  
Vo tol  
Regtemp  
Regline  
Regload  
Votot  
–40° Ta +85°C, Io =Iomin  
Over Vin range  
Over Io range  
Includes set-point, line, load,  
–40° Ta +85°C  
5
mV  
2
3
%Vo  
Efficiency  
η
Io =4A  
Vo =5.0V  
Vo =3.3V  
Vo =2.5V  
Vo =1.8V  
Vo =1.5V  
Vo =1.2V  
93  
92  
91  
89  
87  
85  
%
Vo Ripple (pk-pk)  
Vr  
20MHz bandwidth  
20  
mVpp  
Transient Response  
ttr  
Vtr  
Isc threshold  
ƒs  
1A/µs load step, 50% to 100% Iomax—  
Vo over/undershoot  
50  
µs  
300  
60  
8.5  
350  
mV  
A
Short Circuit Threshold  
Switching Frequency  
Over Vin and Io range  
400  
kHz  
Inhibit (Pin 1)  
Referenced to GND (pin 5)  
(2)  
High-Level Input Voltage  
Low-Level Input Voltage  
Low-Level Input Current  
VIH  
VIL  
IIL  
Vin–0.5  
–0.2  
330  
100  
–0.5  
+0.5  
Open  
+0.5  
1,000  
V
mA  
mA  
µF  
µF  
°C  
°C  
Standby Input Current  
External Output Capacitance  
External Input Capacitance  
Operating Temperature Range  
Storage Temperature  
Iin standby  
Cout  
Cin  
pins 1 & 5 connected  
See application schematic  
See application schematic  
Over Vin range  
(3)  
(4)  
T
–40  
+85  
+125  
a
T
s
–40  
Reliability  
MTBF  
Per Bellcore TR-332  
6
8.8  
10 Hrs  
50% stress, Ta =40°C, ground benign  
Mechanical Shock  
Per Mil-Std-883D, method 2002.3,  
1ms, half-sine, mounted to a fixture  
500  
Gs  
Mechanical Vibration  
Mil-Std-883D, Method 2007.2,  
20-2000Hz, soldered in PCB  
(5)  
20  
23  
Gs  
Weight  
Flammability  
grams  
Materials meet UL 94V-0  
Notes: (1) The ISR will operate at no load with reduced specifications.  
(2) The Inhibit control (pin 1) has an internal pull-up and if it is left open circuit the module will operate when input poweris applied. The open-circuit  
voltage is the input voltage Vin. Use a discrete MOSFET to control the Inhibit pin, and ensure a transitioin time of less than 10µs. Consult the related  
application note for other interface considerations.  
(3) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.  
(4) See Safe Operating Area curves or contact the factory for the appropriate derating.  
(5) The case pins on through-hole package types (suffixes N & A) must be soldered. For more information consult the applicable package outline drawing.  
Input/Output Capacitors: The PT6340 regulator series requires a 100µF electrolytic (or tantalum) capacitor at the input and 330µF at the output for proper  
operation in all applications. In addition, the input capacitance, Cin, must be rated for a minimum of 740mArms of ripple current, and the ESR of the output  
capacitor, Cout, must less than 50m@100kHz. For transient or dynamic load applications additional output capacitance may be necessary. For more information  
consult the related application note on capacitor recommendations.  
For technical support and more information, see inside back cover or visit www.ti.com  
Typical Characteristics  
PT6340 Series  
6-A 12-V Input Adjustable  
Integrated Switching Regulator  
PT6340 Series Performance; @VIN =12.0V (See Note A)  
Safe Operating Area (See Note B)  
Efficiency Vs Output Current  
PT6341, Vo =5.0V, Vin =12V  
100  
90  
80  
70  
60  
50  
40  
30  
20  
90  
Airflow  
200LFM  
120LFM  
60LFM  
PT6341  
80  
70  
60  
50  
PT6342  
PT6343  
PT6344  
PT6345  
PT6346  
Nat conv  
0
1
2
3
4
5
5
5
6
6
6
0
1
2
3
4
5
6
Iout (A)  
Iout (A)  
Ripple Vs Output Current  
PT6342, Vo =3.3V, Vin =12V  
50  
40  
30  
20  
10  
0
90  
80  
70  
60  
50  
40  
30  
20  
Airflow  
200LFM  
120LFM  
60LFM  
PT6341  
PT6342  
PT6343  
PT6344  
PT6345  
PT6346  
Nat conv  
0
1
2
3
4
0
1
2
3
4
5
6
Iout (A)  
Iout (A)  
Power Dissipation Vs Output Current  
PT6345, Vo =1.5V, Vin =12V  
2.5  
2
90  
80  
70  
60  
50  
40  
30  
20  
Airflow  
200LFM  
120LFM  
60LFM  
PT6341  
PT6342  
PT6343  
PT6344  
PT6345  
PT6346  
1.5  
1
Nat conv  
0.5  
0
0
1
2
3
4
0
1
2
3
4
5
6
Iout (A)  
Iout (A)  
Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.  
Note B: SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating temperatures  
For technical support and more information, see inside back cover or visit www.ti.com  
Application Notes  
PT6340 Series  
Figure 1  
Using the Inhibit Function on the PT6340  
12V Bus Excalibur™ Series Converters  
+12V  
+3.3V  
2,3,4  
9,10,11  
The PT6340 series are high efficiency regulators that  
are designed to operate off a 12V input bus. These devices  
incorporate an inhibit function, which may be used in  
applications that require a power-up/shutdown feature.  
Vin  
V o  
PT6342  
Inhibit*  
GND  
5–8  
V o(adj)  
1
12  
+
+
C in  
C out  
The inhibit function is provided by the Inhibit* control,  
pin 1. If pin 1 is left open-circuit the regulator operates  
normally, and provides a regulated output whenever a valid  
supply voltage is applied to Vin (pins 2– 4) with respect  
C O M  
C O M  
Q 1  
B S S 1 3 8  
2
to GND (pins 5–8). If a low voltage is then applied to  
Inhibit  
pin 1 the regulator output will be disabled and the input  
4
current drawn by the ISR will typically drop to 0.5mA .  
The standby control may also be used to hold-off the  
regulator output during the period that input power is  
applied.  
Turn-On Time: In the circuit of Figure 1, turning Q1 on  
applies a low voltage to the Inhibit* control (pin 1) and  
disables the regulator ouput. Correspondingly, turning  
Q1 off removes the low-voltage signal and enables the  
output. Once enabled, the output will typically experience  
a 10–15ms delay followed by a predictable ramp-up of  
voltage. The regulator should provide a fully regulated  
output voltage within 30ms. The waveform of Figure 2  
shows the output voltage response of a PT6342 (3.3V)  
following the turn-off of Q1. The turn off of Q1 corre-  
sponds to the rise in Vinh. The waveforms were measured  
with a 12Vdc input voltage, and 2 ½ Adc load.  
The Inhibit* input can be controlled with an open-collector  
(or open-drain) discrete transistor (See Figure 1). The  
1
input is internally pulled-up to the input voltage, Vin  
Table 1 gives the control voltage requirements.  
.
Table 1 Inhibit Control Requirements 3  
Parameter  
Min  
Typ  
Max  
VIL  
VIH  
IIL  
-0.1V  
2.0V  
0.6V  
Vin  
0.5mA  
Notes:  
1. The inhibit control input requires no external pull-up  
Figure 2  
resistor. The open-circuit voltage of the Inhibit* input is  
typically the input voltage, Vin.  
2. The inhibit control input is Not compatible with TTL  
devices. An open-collector device, preferably a discrete  
bipolar transistor (or MOSFET) is recommended. To  
ensure the regulator output is disabled, the control pin  
must be pulled to less than 0.6Vdc with a low-level  
0.5mA sink to ground.  
Vo (2V/Div)  
Iin (0.5A/Div)  
3. An external source voltage can be used to control the  
Inhibit* pin. To guarantee the inhibit and enable status  
of the regulator, the source must be capable of meeting  
the voltage requirements in Table 1 .  
Vinh (10V/Div)  
4. When the regulator output is disabled the current drawn  
from the input source is typically reduced to 0.5mA.  
HORIZ SCALE: 5ms/Div  
For technical support and more information, see inside back cover or visit www.ti.com  
Application Notes  
PT6340 Series  
Capacitor Recommendations for the PT6340  
6A ExcaliburRegulator Series  
Input Capacitors:  
Tantalum Capacitors  
Output Current 4A Continuous (Table 1)  
Tantalums are acceptable on the output bus but only the  
AVX TPS series, Sprague 593D/594/595 series or Kemet  
T495/T510 series. These capacitors are recommended  
over many other types due to their higher rated surge,  
power dissipation, and ripple current capability. As a  
caution, the TAJ series by AVX is not recommended. This  
series exhibits considerably higher ESR and lower ripple  
current capability. The TAJ series is also less reliable than  
the TPS series when determining power dissipation  
capability. Tantalum or Oscon capacitor types are recom-  
mended for applications where ambient temperatures fall  
below 0°C.  
The recommended input capacitance is determined by  
740 milli-amperes (rms) minimum ripple current rating,  
less than 100mESR (equivalent series resistance),  
and 100µF minimum capacitance. The ripple current  
rating, ESR, and operating temperature are the major  
considerations when selecting the input capacitor.  
It is recommended that tantalum capacitors have a  
minimum voltage rating of twice (2×) the maximum dc  
voltage, plus the ac ripple. This is necessary to insure  
reliability with 12V input voltage bus applications. None  
of the 100µF tantalum capacitors were found to meet  
this requirement.  
Capacitor Tables  
Table 1 and Table 2 identify the vendors with acceptable  
ESR and maximum allowable ripple current (rms) ratings.  
The output capacitors are identified in both tables under  
the “Output Bus” column with the required quantity.  
Input Capacitors:  
Output Current >4A Continuous (Table 2)  
The recommended input capacitance is determined by  
1.0 amperes (rms) minimum ripple current rating and  
100µF minimum capacitance. The ripple current rating,  
combined with less than 100mESR (equivalent series  
resistance) value are the major considerations, along  
with temperature, when selecting the input capacitor.  
The input capacitors are listed in both tables. Table 1 has  
the recommended input capacitors when operating the  
ISR at a load current of 4Adc or less, and Table 2 identi-  
fies input capacitors for ISR load currents greater than  
4Adc.  
It is recommended that tantalum capacitors have a  
minimum voltage rating of twice (2×) the maximum dc  
voltage, plus the ac ripple. This is necessary to insure  
reliability for 12V input voltage bus applications. None  
of the 100µF tantalum capacitors were found to meet  
this requirement.  
This is not an extensive capacitor list. Capacitors from other  
vendors are available with comparable specifications. Those listed  
are for guidance. The RMS ripple current rating and ESR  
(Equivalent Series Resistance at 100kHz) are critical parameters  
necessary to insure both optimum regulator performance and  
long capacitor life.  
Output Capacitors:  
Output Current 06A (Table 1 & Table 2)  
The ESR of the required capacitor must be less than,  
or equal to 50mΩ. Electrolytic capacitors have poor  
ripple performance at frequencies greater than 400kHz  
but excellent low frequency transient response. Above  
the ripple frequency, ceramic decoupling capacitors are  
necessary to improve the transient response and reduce  
any high frequency noise components apparent during  
higher current excursions. Preferred low ESR type  
capacitors part numbers are identified in the capacitor  
tables.  
For technical support and more information, see inside back cover or visit www.ti.com  
Application Notes continued  
PT6340 Series  
Table 1: Input/Output Capacitors (Output Current 4 Amperes Continuous)  
Capacitor Characteristics  
Quantity  
Capacitor Vendor/  
Component  
Series  
Working  
Voltage  
(ESR) Equivalent  
Max Ripple Current  
Physical  
Size (mm)  
Input  
Output  
Bus  
Value(µF)  
Vendor Number  
Series Resistance  
@85°C (Irms)  
Bus  
Panasonic FC (Radial)  
FC (Surface Mount)  
35V  
35V  
50V  
220µF  
180µF  
680µF  
0.09Ω ÷2  
0.09Ω ÷2  
0.048Ω  
755mA  
755mA  
1835mA  
10 ×12.5  
10 ×12.5  
16 ×20  
1
1
1
2
2
1
EEUFC1V221  
EEUFC1V181  
EEUFC1H681  
63V  
35V  
35V  
220µF  
330µF  
470µF  
0.09Ω ÷2  
0.12Ω ÷3  
0.043Ω  
1410mA  
1205mA  
1690mA  
16 ×16.5  
12.5 ×16  
16 ×16.5  
1
1
1
2
3
1
EEVFC1J221N  
EEVFC1V331LQ  
EEVFC1V471N  
United Chemi-Con,  
LXV/LXZ  
50V  
35V  
120µF  
220µF  
0.12Ω ÷3  
0.09Ω ÷2  
755mA  
760mA  
10 ×16  
10 ×12.5  
1
1
3
2
LXV50VB121M10X16LL  
LXZ35VB221M10X12LL  
FS  
10V  
20V  
330µF  
150µF  
0.025Ω  
0.03Ω ÷2  
3500mA  
3200mA  
10 ×10.5  
10 ×10.5  
N/R  
1
1
2
10FS330M  
20FS150M  
Nichicon, PL  
35V  
35V  
560µF  
330µF  
0.048Ω  
0.065Ω ÷2  
1360mA  
1020mA  
16 ×15  
12.5 ×15  
1
1
1
2
UPL1V561MHH6  
UPL1V331MHH6  
PM  
50V  
10V  
470µF  
330µF  
0.046Ω  
0.025Ω  
1470mA  
18 ×15  
1
1
1
UPM1H4711MHH6  
10SS330M  
Oscon, SS (Radial)  
>3500mA  
10.0 ×10.5  
N/R  
SV (Surface Mount)  
AVX Tantalum TPS  
10V  
20V  
330µF  
150µF  
0.025Ω  
0.024Ω ÷2  
>3800mA  
3600mA  
10.3 ×10.3  
10.3 ×10.3  
N/R  
1
1
2
10SV300M  
20SV150M  
10V  
10V  
25V  
330µF  
330µF  
68µF  
0.1Ω ÷2  
0.1Ω ÷2  
0.095Ω  
>2500mA  
>3000mA  
>2000mA  
7.3L  
×4.3W  
×4.1H  
N/R  
N/R  
2
2
2
N/R  
TPSV337M010R0100  
TPSV337M010R0060  
TPSV686M025R0095  
Kemet, T510  
T495  
10V  
10V  
330µF  
220µF  
0.033Ω  
0.07Ω ÷2  
1400mA  
>2000mA  
7.3L ×5.7W  
×4.0H  
N/R  
N/R  
1
2
T510X337M010AS  
T495X227M010AS  
Sprague, 594D  
10V  
25V  
330µF  
68µF  
0.0450Ω  
0.095Ω  
2350mA  
1600mA  
7.3L × 6.0W  
×4.1H  
N/R  
2
1
N/R  
594D337X0010R2T  
594D686X0025R2T  
N/R –Not recommended. The voltage rating does not meet the minimin operating limits.  
Table 2: Input/Output Capacitors (Output Current >4 Amperes Continuous)  
Capacitor Characteristics  
Quantity  
Capacitor Vendor/  
Component  
Series  
Working  
Voltage  
(ESR) Equivalent  
Max Ripple Current  
Physical  
Size (mm)  
Input  
Bus  
Output  
Bus  
Value(µF)  
Vendor Number  
Series Resistance  
@85°C (Irms)  
Panasonic, FC (Radial)  
FC (Surface Mount)  
35V  
35V  
50V  
680µF  
560µF  
680µF  
0.043Ω  
0.038Ω  
0.048Ω  
1655mA  
1655mA  
1835mA  
12.5 ×20  
12.5 ×20  
16 ×20  
1
1
1
1
1
1
EEUFC1V681  
EEUFC1V561S  
EEUFC1H681  
63V  
35V  
35V  
220µF  
330µF  
470µF  
0.09÷2Ω  
0.12÷3Ω  
0.043Ω  
1410mA  
1205mA  
1690mA  
16 ×16.5  
12.5 ×16  
16 ×16.5  
1
1
1
2
3
1
EEVFC1J221N  
EEVFC1V331LQ  
EEVFC1V471N  
Un ited  
35V  
25V  
10V  
20V  
330µF  
820µF  
390µF  
150µF  
0.068Ω  
0.046Ω  
0.030Ω  
0.024Ω  
1050mA  
1340mA  
3080mA  
3200mA  
10 ×16  
12 ×20  
8 ×10.5  
8 ×10.5  
1
1
N/R  
1
2
1
1
2
LXZ35VB331M110X16LL  
LXV25VB820M12X20LL  
10FX390M  
Chemi-con  
LXV/LXZ/  
FX/FS  
20FX150M  
Nichicon, PL  
35V  
35V  
560µF  
330µF  
0.048Ω  
0.06÷2Ω  
1360mA  
1020mA  
16 ×15  
12.5 ×15  
1
1
1
2
UPL1V561MHH6  
UPL1V331MHH6  
PM  
35V  
10V  
560µF  
330µF  
0.0048Ω  
0.025Ω  
1360mA  
16 ×15  
1
1
1
UPM1V561MHH6  
10SS330M  
Oscon, SS (Radial)  
>3500mA  
10.0 ×10.5  
N/R  
SV (Surface Mount)  
AVX Tantalum, TPS  
10V  
20V  
330µF  
150µF  
0.025Ω  
0.02÷2Ω  
>3800mA  
3600mA  
10.3 ×10.3  
10.3 ×10.3  
N/R  
1
1
2
10SV330M  
20SV150M  
10V  
10V  
25V  
330µF  
330µF  
68µF  
0.1÷2Ω  
0.1÷2Ω  
0.095Ω  
>2500mA  
>3000mA  
>2000mA  
7.3L  
×4.3W  
×4.1H  
N/R  
N/R  
2
2
2
N/R  
TPSV337M010R0100  
TPSV337M010R0060  
TPSV686M025R0095  
Kemet, T510  
T495  
10V  
10V  
330µF  
220µF  
0.033Ω  
0.07Ω÷2  
1400mA  
>2000mA  
7.3L x5.7W  
×4.0H  
N/R  
N/R  
1
2
T510X337M010AS  
T495X227M010AS  
Sprague, 594D  
10V  
25V  
330µF  
68µF  
0.045Ω  
0.095Ω  
2350mA  
1600mA  
7.3L ×6.0W  
×4.1H  
N/R  
2
1
N/R  
594D337X0010R2T  
594D686X0025R2T  
N/R –Not recommended. The voltage rating does not meet the minimin operating limits.  
For technical support and more information, see inside back cover or visit www.ti.com  
Application Notes  
PT6340 Series  
Adjusting the Output Voltage of the PT6340  
Excalibur 6 A, 12 V Bus Step-Down ISRs  
The values of (R1) [adjust down], and R2 [adjust up], can  
also be calculated using the following formulas. Refer to  
Figure 1 and Table 2 for both the placement and value of the  
required resistor; either (R1) or R2 as appropriate.  
The output voltage of the PT6340 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).  
Ro (Va – Vr)  
(R1)  
=
=
– Rs  
– Rs  
kΩ  
kΩ  
Vo – Va  
Adjust Up: An increase in the output voltage is obtained by  
adding a resistor R2, between pin 12 (Vo adj) and pins 5-8  
(GND).  
Vr · Ro  
Va – Vo  
R2  
Adjust Down: Add a resistor (R1), between pin 12 (Vo adj) and  
pins 9-11 (Vo).  
Where:  
V
= Original output voltage  
= Adjusted output voltage  
= Reference voltage (Table 1)  
o
V
a
V
r
Figure 1  
Ro = Resistance constant (Table 1)  
Rs = Internal series resistance (Table 1)  
2,3,4  
9,10,11  
V in  
V o  
Notes:  
+VIN  
PT6340  
+VO  
1. Use only a single 1% resistor in either the (R1) or R2  
location. Place the resistor as close to the ISR as possible.  
GND  
Vo(adj)  
58  
12  
(R1)  
Adj Down  
+
+
2. Never connect capacitors from Vo adj to either GND or  
Vout. Any capacitance added to the Vo adjust pin will  
affect the stability of the ISR.  
C1  
C2  
R2  
Adjust Up  
C O M  
C O M  
Table 1  
ISR ADJUSTMENT RANGE AND FORMULA PARAMETERS  
Series Pt #  
PT6341  
PT6342  
PT6343  
PT6244  
PT6345  
PT6346  
V (nom)  
5.0  
4.0  
3.3  
2.8  
2.5  
2.2  
3.0  
1.27  
1.8  
1.7  
1.5  
1.45  
2.0  
1.2  
1.1  
o
V (min)  
a
V (max)  
a
5.5  
3.8  
2.3  
1.45  
0.8  
V (V)  
r
1.27  
10.0  
24.9  
1.27  
10.0  
24.9  
1.27  
10.0  
24.9  
1.27  
10.0  
24.9  
R (k)  
o
10.0  
24.9  
10.0  
24.9  
R (k)  
s
For technical support and more information, see inside back cover or visit www.ti.com  
Application Notes  
PT6340 Series  
Table 2  
ISR ADJUSTMENT RESISTOR VALUES  
Series Pt #  
Vo (nom)  
Va (reqd)  
2.8  
PT6341  
5.0  
PT6342  
3.3V  
Series Pt #  
Vo (nom)  
Va (reqd)  
1.1  
PT6343  
2.5  
PT6344  
1.8  
PT6345  
1.5  
PT6346  
1.2V  
(5.1)kΩ  
(5.7)kΩ  
(10.2)kΩ  
(15.8)kΩ  
(22.9)kΩ  
(32.8)kΩ  
(46.3)kΩ  
(66.6)kΩ  
(100.0)kΩ  
(168.0)kΩ  
(371.0)kΩ  
1.15  
1.2  
(45.1)kΩ  
2.85  
2.9  
2.95  
3.0  
3.05  
3.1  
3.15  
3.2  
3.25  
3.3  
3.35  
3.4  
3.45  
3.5  
3.6  
3.7  
3.8  
4.0  
4.1  
4.2  
4.3  
4.4  
4.5  
4.6  
4.7  
4.8  
4.9  
5.0  
5.1  
5.2  
5.3  
5.4  
5.5  
1.25  
1.3  
135.0kΩ  
55.1kΩ  
28.4kΩ  
15.1kΩ  
7.1kΩ  
1.35  
1.4  
1.45  
1.5  
(11.1)kΩ  
1.55  
1.6  
229.0kΩ  
102.0kΩ  
59.8kΩ  
38.6kΩ  
25.9kΩ  
17.4kΩ  
11.4kΩ  
6.9kΩ  
1.65  
1.7  
229.0kΩ  
102.0kΩ  
59.8kΩ  
38.6kΩ  
17.4κΩ  
6.9kΩ  
(18.1)kΩ  
(71.1)kΩ  
1.75  
1.8  
1.85  
1.9  
229.0kΩ  
102.0kΩ  
59.8kΩ  
38.6kΩ  
25.9kΩ  
17.4kΩ  
11.4kΩ  
6.9kΩ  
1.95  
2.0  
3.3kΩ  
0.5kΩ  
0.5kΩ  
(2.4)kΩ  
(6.5)kΩ  
2.05  
2.1  
(11.7)kΩ  
(18.4)kΩ  
(27.3)kΩ  
(39.7)kΩ  
(58.3)kΩ  
(89.4)kΩ  
(152.0)kΩ  
(338.0)kΩ  
2.15  
2.2  
(0.0)kΩ  
(6.1)kΩ  
2.25  
2.3  
(14.3)kΩ  
(26.6)kΩ  
(47.1)kΩ  
(88.1)kΩ  
(206.0)kΩ  
3.3kΩ  
0.5kΩ  
2.35  
2.4  
2.45  
2.5  
2.55  
2.6  
229.0kΩ  
102.0kΩ  
59.8kΩ  
38.6kΩ  
25.9kΩ  
17.4kΩ  
11.4kΩ  
6.9kΩ  
102kΩ  
38.6kΩ  
17.4kΩ  
6.9kΩ  
0.5kΩ  
2.65  
2.7  
2.75  
2.8  
2.85  
2.9  
2.95  
3.4kΩ  
3.0  
0.5kΩ  
R1 = (Blue)  
R2 = Black  
For technical support and more information, see inside back cover or visit www.ti.com  
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enhancements, improvements, and other changes to its products and services at any time and to discontinue  
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accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI  
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parameters of each product is not necessarily performed.  
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