BOM-DAT/Resistor-Dat/resistor-feedback-dat/resistor-feedback-dat.md
... ...
@@ -19,7 +19,8 @@ R3 = 13.633K or below 13.3K for 5.2V
19 19
20 20
| output | rough | Rbot | Rtop | Vref |
21 21
| ------ | ----- | ----- | ---- | ---- |
22
-| 5V | 5.2V | 13.3K | 100K | 0.6V |
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+| 5V | 5.18V | 13.3K | 100K | 0.6V |
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+| 5V | 5.31V | 13K | 100K | 0.6V |
23 24
| 4.35V | 4.35V | 16K | 100K | 0.6V |
24 25
| 4.2V | 4.2V | 16.6K | 100K | 0.6V |
25 26
| 4V | 3.93V | 18K | 100K | 0.6V |
... ...
@@ -30,6 +31,22 @@ R3 = 13.633K or below 13.3K for 5.2V
30 31
电池端对应的的电压为： VBAT＝1.205×(1＋R1／R2)
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32 33
34
+## R2 = ( R1 x 1.221 ) / ( VOUT - 1.221 )
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+
36
+- = ( 10K x 1.221 ) / ( 5V - 1.221 ) = 3.23K ~ 3.24K
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+
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+VOUT = ( R1 x 1.221 ) / R2 + 1.221
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+= ( 10K x 1.221 ) / 3.3K + 1.221 = 4.921V
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+= ( 10K x 1.221 ) / 3K + 1.221 = 5.27V
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+
42
+= ( 12K x 1.221 ) / 3.3K + 1.221 = 5.661V
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+= ( 12K x 1.221 ) / 3.9K + 1.221 = 4.95V
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+= ( 12K x 1.221 ) / 4.7K + 1.221 = 4.34V
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+= ( 13K x 1.221 ) / 3K + 1.221 = 6.48V
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+= ( 14K x 1.221 ) / 4.7K + 1.221 = 5.61V
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+
48
+= ( 9.1K x 1.221 ) / 2.8K + 1.221 = 5.19V
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+
33 50
34 51
### parallel resistor
35 52
... ...
@@ -141,6 +158,8 @@ where R7 = 14K
141 158
142 159
## ref
143 160
161
+- [[resistor-feedback]]
162
+
144 163
- [[battery-pack-dat]]
145 164
146 165
- [[dcdc-down-dat]]
Board-dat/NWI/NWI1254-dat/NWI1254-dat.md
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@@ -0,0 +1,24 @@
1
+
2
+# NWI1254-dat
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+
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+## Info
5
+
6
+product url -
7
+
8
+### Board Map, Dimension, Pins, chip info, Use Guide, Setup Jumper, etc.
9
+
10
+- [[resistor-feedback-dat]]
11
+
12
+
13
+
14
+## Applications, category, tags, etc.
15
+
16
+## Demo Code and Video
17
+
18
+
19
+
20
+## ref
21
+
22
+- [[NWI1254]]
23
+
24
+- legacy wiki page
Chip-dat/TI-dat/TI-Power-dat/TPS5430-dat/2025-12-25-20-41-03.png
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Binary files /dev/null and b/Chip-dat/TI-dat/TI-Power-dat/TPS5430-dat/2025-12-25-20-41-03.png differ
Chip-dat/TI-dat/TI-Power-dat/TPS5430-dat/TPS5430-dat.md
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@@ -0,0 +1,20 @@
1
+
2
+# TPS5430-dat
3
+
4
+TPS543x 3A, Wide Input Range, Step-Down Converter
5
+
6
+Wide input voltage range:
7
+– TPS5430: 5.5V to 36V
8
+– TPS5431: 5.5V to 23V
9
+
10
+
11
+Available in small thermally enhanced 8-pin SO PowerPAD™ integrated circuit package
12
+
13
+- [[resistor-feedback-dat]]
14
+
15
+![](2025-12-25-20-41-03.png)
16
+
17
+
18
+## ref
19
+
20
+- [[ti-power-dat]]
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\ No newline at end of file
Chip-dat/TI-dat/TI-Power-dat/TPS54302-dat/TPS54302-dat.md
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@@ -15,6 +15,7 @@ TPS54302 4.5-V to 28-V Input, 3-A Output, EMI-Friendly Synchronous Step-Down Con
15 15
| Cfb | 75pf | |
16 16
| Co | 22uf x2 | |
17 17
18
+SOT-23 (6) package
18 19
19 20
20 21
![](2024-04-29-16-00-08.png)
Chip-dat/raspberry-pi-dat/RPI-MCU-dat/RPI-MCU-dat.md
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@@ -0,0 +1,6 @@
1
+
2
+# RPI-MCU-dat
3
+
4
+- [[RP2040-dat]]
5
+
6
+
Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-MCU-dat/RPI-MCU-dat.md
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@@ -1,6 +0,0 @@
1
-
2
-# RPI-MCU-dat
3
-
4
-- [[RP2040-dat]]
5
-
6
-
Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-SDK-dat/RPI-SDK-dat.md
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@@ -0,0 +1,4 @@
1
+
2
+# RPI-SDK-dat
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+
4
+- [[led-rgb-panel-chip-log-dat]]
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\ No newline at end of file
board-3rd-dat/board-3rd-dat.md
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@@ -3,8 +3,10 @@
3 3
4 4
- [[ESP32-lyrat-dat]]
5 5
6
-- [[RPI-dat]] - [[RPI-CM4-dat]] - [[RPI-CM4-expansion-board-dat]]
6
+- [[RPI-SBC-dat]] - [[RPI-CM4-dat]] - [[RPI-CM4-expansion-board-dat]]
7 7
8 8
- [[nodemcu-dat]]
9 9
10
-- [[RAKwireless-dat]]
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\ No newline at end of file
0
+- [[RAKwireless-dat]]
1
+
2
+
board-series-dat/led-rgb-panel-dat/led-rgb-panel-chip-dat/led-rgb-panel-chip-dat.md
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@@ -3,6 +3,8 @@
3 3
4 4
- [[led-rgb-panel-chip-log-dat]]
5 5
6
+- [[RMP-driver-dat]]
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+
6 8
7 9
- ICND2012
8 10
- RUC7258