TPS2505B1RGWR

Texas Instruments · Power Distribution Switches · VQFN-20-EP(5x5)

TPS2505B1RGWR from Texas Instruments, in a VQFN-20-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	PGND	power_in	Source connection for the internal low-side boost converter power switch; connect to GND with a low-impedance connection to the input and output capacitors.
2	IN	input	Input supply voltage for the boost converter, specified at 1.8 V to 5.25 V with a 2.2 V minimum start-up voltage.
3	EN	input	Enable input for the boost converter; tie to IN to enable. Enable voltage range is 0 V to 5.25 V.
4	GND	power_in	Control and logic ground; must be tied to PGND close to the IC externally.
5	ILIM1	input	Programs the nominal USB1 switch current-limit threshold through a resistor to GND.
6	ILIM2	input	Programs the nominal USB2 switch current-limit threshold through a resistor to GND.
7	FAULT1	output	Active-low USB1 fault indicator with open-drain output; the datasheet limits FAULT sink current to 25 mA absolute maximum.
8	ENUSB1	input	Enable input for the USB1 switch; tie to IN or AUX to enable. Enable voltage range is 0 V to 5.25 V.
9	RESET	output	Active-low LDO output-good indicator with open-drain output.
10	LDOOUT	output	Fixed 3.3-V LDO output; connect a low-ESR ceramic capacitor from LDOOUT to GND.
11	LDOIN	input	Input supply voltage for the LDO; connect to AUX.
12	ENLDO	input	Enable input for the LDO; tie to AUX to enable. Enable voltage range is 0 V to 5.25 V.
13	FAULT2	output	Active-low USB2 fault indicator with open-drain output; the datasheet limits FAULT sink current to 25 mA absolute maximum.
14	ENUSB2	input	Enable input for the USB2 switch; tie to IN or AUX to enable. Enable voltage range is 0 V to 5.25 V.
15	USB2	output	Output of the USB2 power switch; connect to the USB2 port.
16	USB1	output	Output of the USB1 power switch; connect to the USB1 port. Pins 16 and 17 are both USB1 and are listed together in the datasheet.
17	USB1	output	Output of the USB1 power switch; connect to the USB1 port. Pins 16 and 17 are both USB1 and are listed together in the datasheet.
18	AUX	output	Fixed 5.1-V boost converter output; connect a low-ESR ceramic capacitor from AUX to PGND.
19	SW	power_in	Boost and rectifying switch node, switched between PGND and AUX; connect the boost inductor from IN to SW.
20	SW	power_in	Boost and rectifying switch node, switched between PGND and AUX; connect the boost inductor from IN to SW. Pins 19 and 20 are both SW and are listed together in the datasheet.
21	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	VQFN-20-EP(5x5)
Category	Power Management (PMIC)
Pins	21

CAD (KiCad official)

Symbol: TPS2505B1RGWR
Footprint: Package_DFN_QFN:QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm
3D model: VQFN-20-EP(5x5) (KiCad packages3D, STEP)
3D model files: tps2505b1rgwr-etched.step / tps2505b1rgwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tps2505b1rgwr.step / tps2505b1rgwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (34 pp, sha256 aa51cb09bc4e25d8, retrieved 2026-10-11, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

# TPS2505B1RGWR

**Texas Instruments** · Power Distribution Switches · VQFN-20-EP(5x5)

TPS2505B1RGWR from Texas Instruments, in a VQFN-20-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PGND | power_in | Source connection for the internal low-side boost converter power switch; connect to GND with a low-impedance connection to the input and output capacitors. |
| 2 | IN | input | Input supply voltage for the boost converter, specified at 1.8 V to 5.25 V with a 2.2 V minimum start-up voltage. |
| 3 | EN | input | Enable input for the boost converter; tie to IN to enable. Enable voltage range is 0 V to 5.25 V. |
| 4 | GND | power_in | Control and logic ground; must be tied to PGND close to the IC externally. |
| 5 | ILIM1 | input | Programs the nominal USB1 switch current-limit threshold through a resistor to GND. |
| 6 | ILIM2 | input | Programs the nominal USB2 switch current-limit threshold through a resistor to GND. |
| 7 | FAULT1 | output | Active-low USB1 fault indicator with open-drain output; the datasheet limits FAULT sink current to 25 mA absolute maximum. |
| 8 | ENUSB1 | input | Enable input for the USB1 switch; tie to IN or AUX to enable. Enable voltage range is 0 V to 5.25 V. |
| 9 | RESET | output | Active-low LDO output-good indicator with open-drain output. |
| 10 | LDOOUT | output | Fixed 3.3-V LDO output; connect a low-ESR ceramic capacitor from LDOOUT to GND. |
| 11 | LDOIN | input | Input supply voltage for the LDO; connect to AUX. |
| 12 | ENLDO | input | Enable input for the LDO; tie to AUX to enable. Enable voltage range is 0 V to 5.25 V. |
| 13 | FAULT2 | output | Active-low USB2 fault indicator with open-drain output; the datasheet limits FAULT sink current to 25 mA absolute maximum. |
| 14 | ENUSB2 | input | Enable input for the USB2 switch; tie to IN or AUX to enable. Enable voltage range is 0 V to 5.25 V. |
| 15 | USB2 | output | Output of the USB2 power switch; connect to the USB2 port. |
| 16 | USB1 | output | Output of the USB1 power switch; connect to the USB1 port. Pins 16 and 17 are both USB1 and are listed together in the datasheet. |
| 17 | USB1 | output | Output of the USB1 power switch; connect to the USB1 port. Pins 16 and 17 are both USB1 and are listed together in the datasheet. |
| 18 | AUX | output | Fixed 5.1-V boost converter output; connect a low-ESR ceramic capacitor from AUX to PGND. |
| 19 | SW | power_in | Boost and rectifying switch node, switched between PGND and AUX; connect the boost inductor from IN to SW. |
| 20 | SW | power_in | Boost and rectifying switch node, switched between PGND and AUX; connect the boost inductor from IN to SW. Pins 19 and 20 are both SW and are listed together in the datasheet. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VQFN-20-EP(5x5) |
| Category | Power Management (PMIC) |
| Pins | 21 |

## CAD (KiCad official)

- Symbol: `TPS2505B1RGWR`
- Footprint: `Package_DFN_QFN:QFN-20-1EP_5x5mm_P0.65mm_EP3.35x3.35mm`
- 3D model: VQFN-20-EP(5x5) (KiCad packages3D, STEP)
- 3D model files: `tps2505b1rgwr-etched.step` / `tps2505b1rgwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tps2505b1rgwr.step` / `tps2505b1rgwr.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tps2505) (34 pp, sha256 `aa51cb09bc4e25d8`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tps2505b1rgwr-datasheet.pdf)