- 您现在的位置：买卖IC网 > PDF目录96795 > PT6922C (TEXAS INSTRUMENTS INC) 6 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, SMA23 PDF资料下载
参数资料
| 型号： | PT6922C |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, SMA23 |
| 封装： | SIP-23 |
| 文件页数： | 3/8页 |
| 文件大小： | 160K |
| 代理商： | PT6922C |
A pplication Notes
For technical suppor t and mor e infor mation, see inside back cover or visit www.ti.com/power tr ends
PT6920/PT6930 Series
Adjusting the Output Voltage of the PT6920 and
PT6930 Dual Output Voltage ISRs
Each output voltage from the PT6920 and PT6930 series
of ISRs can be independantly adjusted higher or lower
than the factory trimmed pre-set voltage. V
1 (the voltage
at V
1out), or V2 (the voltage at V2out) may each be ad-
justed either up or down using a single external resistor 2.
Table 1 gives the adjustment range for both V
1 and V2 for
each model in the series as V
a(min) and Va(max).
Note
that V
2 must always be lower than V1
3.
V
1 Adjust Up:
To increase the output, add a resistor
R4 between pin 16 (V
1 Adjust) and pins 7-11 (GND)
2.
V
1 Adjust Down:
Add a resistor (R3), between pin 16
(V
1 Adjust) and pin 1 (V1 Remote Sense)
2.
V
2 Adjust Up:
Add a resistor R2 between pin 23
(V
2 Adjust) and pins 7-11 (GND)
2.
V
2 Adjust Down:
Add a resistor (R1) between pin 23
(V
2 Adjust) and pin 22 (V2 Remote Sense)
2.
Refer to Figure 1 and Table 2 for both the placement and value
of the required resistor.
Notes:
1. The output voltages, V
1out and V2out, may be
adjusted independantly.
2. Use only a single 1% resistor in either the (R3) or R4
location to adjust V
1, and in the (R1) or R2 location
to adjust V
2.
Place the resistor as close to the ISR as
possible.
3. V
2 must always be at least 0.2V lower than V1.
4. V
2 on both the PT6921 and PT6931 models may be
adjusted from 2.5V to 1.8V by simply connecting pin
22 (V
2 Remote Sense) to pin 23 (V2 Adjust).
For
more details, consult the data sheet.
Table 1
PT6920ADJUSTMENTRANGEANDFORMULAPARAMETERS
Output Bus
V1 out
V2 out
Ser ies Pt #
Standar d Case
PT6921/22
PT6921
PT6922
Excalibur Case
PT6931/32
PT6931
PT6932
Adj. Resistor
(R3)/R4
(R1)/R2
Vo(nom)
3.3V
2.5V
1.5
Va(min)
2.3V
1.8V
1.2
Va(max)
3.6V
3.0V
3.0
Ro (k
)
12.1
10.0
9.76
Rs (k
)
12.1
11.5
6.49
Figur e 1
C
1
+
C
2
+
C
3
+
R4
(R3)
(R1)
R2
L
O
A
D
L
O
A
D
Adj Down
Adjust Up
Vin
COM
V2
out
V1
out
PT6920
18 - 21
23
7 - 11
4,5,6
Vin
V2
out
GND
V o
2(adj)
V
1(sns)
1
16
Vo
1(adj)
12 - 15
V1
out
V
2(sns)
22
STBY
3
Adjust V1
out
Adjust V2
out
5. If V
1 is increased above 3.3V, the minimum input
voltage to the ISR must also be increased. The
minimum required input voltage must be (V
1 + 1.2)V
or 4.5V, whichever is greater. Do not exceed 5.5V
6. Never connect capacitors to either the V
1 Adjust or
V
2 Adjust pins.
Any capacitance added to these
control pins will affect the stability of the respective
regulated output.
7. Adjusting either voltage (V
1 or V2) may increase the
power dissipation in the regulator, and
correspondingly change the maximum current
available at either output. Consult the factory for
application assistance.
The adjust up and adjust down resistor values can also be
calculated using the following formulas. Be sure to select
the correct formula parameter from Table 1 for the output
and model being adjusted.
(R1) or (R3) =
R
o (Va – 1)
– R
s
k
V
o – Va
R2 or R4
=
R
o
– R
s
k
V
a – Vo
Where:
V
o
= Original output voltage, (V
1 or V2)
V
a
= Adjusted output voltage
R
o
= The resistance value from Table 1
R
s
= The series resistance from Table 1
相关PDF资料 |
PDF描述 |
|---|---|
| PT6921A | 6 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, SMA23 |
| PT6922A | 6 A SWITCHING REGULATOR, 725 kHz SWITCHING FREQ-MAX, SMA23 |
| PT7601C | 10 A SWITCHING REGULATOR, 750 kHz SWITCHING FREQ-MAX, SMA27 |
| PT7602C | SWITCHING REGULATOR, SMA27 |
| PT7602N | SWITCHING REGULATOR, SIP27 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PT6922N | 功能描述:开关变换器、稳压器与控制器 3.3/1.5Vout 25W 5Vin Adj Dual Output ISR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| PT6930 | 制造商:TI 制造商全称:Texas Instruments 功能描述:8-A 5V-Input Dual-Output Integrated Switching Regulator |
| PT6931 | 制造商:TI 制造商全称:Texas Instruments 功能描述:5V TO 3.3V/2.5V 25 WATT DUAL OUTPUT INTEGRATED SWITCHING REGULATOR |
| PT6931A | 功能描述:DC/DC转换器 25W 5V-Input Adj Dual Output ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PT6931C | 功能描述:DC/DC转换器 25W 5V-Input Adj Dual Output ISR RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
发布紧急采购，3分钟左右您将得到回复。