

Overview
The IP2721 is an interface Specialized made by INJOINIC in a TSSOP-16 package with 16 pins. -40℃~+85℃ 1C 3V~25V 5V、15V、20V PD 2.0、PD 3.0 Power Receiver Controller TSSOP-16 USB PD ROHS.
PCBKit's library has its KiCad symbol (Interface_USB:IP2721, from KiCad's library) and its footprint (Package_SO:TSSOP-16_4.4x5mm_P0.65mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C603176). 26 open-source boards in 18 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
9- Supply, least
- 3 V · VIN, recommended operating min · p. 4
- Supply, most
- 25 V · VIN, recommended operating max · p. 4
- Supply, absolute maximum
- 30 V · VIN, absolute maximum · p. 3
- Works from
- -40 °C · Ambient temperature, recommended operating min · p. 4
- Works up to
- 85 °C · Ambient temperature, recommended operating max · p. 4
- Junction, hottest
- 150 °C · Junction temperature, absolute maximum · p. 3
- Takes working
- 1.5 mA · Quiescent current, CC connected, max · p. 4
- Junction to air (TSSOP16)
- 90 K/W · Junction to ambient thermal resistance · p. 4
- Junction to case (TSSOP16)
- 39 K/W · Junction to case thermal resistance · p. 4
What it is and has
8- USB protocols
- TYPEC/PD2.0/PD3.0 physical layer for USB TYPEC input interfaces · p. 1
- Port mode
- sink (device) · p. 5
- Connection detection
- Automatic USB TYPEC plug-in and plug-out detection · p. 5
- PD coding
- Hardware bi-phase Mark Coding (BMC) over CC · p. 5
- PD protocol
- Integrated protocol state machine · p. 5
- PD reset
- Hard reset supported · p. 5
- Soft start
- VBUS soft start · p. 1
- Package
- TSSOP16 · p. 1
Around it
3- cap 1uF
- between VIN and GND; Power input capacitor. · p. 2
- res 100kohm
- between SEL and VIN; Pull SEL high; establish the SEL connection before power up. · p. 5
- other Power NMOS of Vds withstand voltage above 30V
- between VIN and VBUS; External power path NMOS; drain to VIN, source to VBUS, gate to VBUSG. · p. 5
Specifications
22| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| VIN input voltage range VIN | min -0.3 · max 30 V | 3 | |
| CC1,CC2 input voltage range VCC1,VCC2 | min -0.3 · max 30 V | 3 | |
| Other pins voltage range | min -0.3 · max 10 V | 3 | |
| Junction temperature range TJ | min -40 · max 150 ℃ | 3 | |
| Storage temperature Tstg | min -60 · max 150 ℃ | 3 | |
| Lead temperature Ts | Soldering, 10sec. | max 260 ℃ | 3 |
| Ambient temperature range TA | min -40 · max 120 ℃ | 3 | |
| Package thermal resistance θJA | TSSOP16 | max 90 ℃/W | 4 |
| Package thermal resistance θJC | TSSOP16 | max 39 ℃/W | 4 |
| Human body model (HBM) ESD | max 2 KV | 4 | |
| Input voltage VIN | min 3 · max 25 V | 4 | |
| Ambient temperature TA | min -40 · max 85 ℃ | 4 | |
| Input voltage VIN | Supplied directly; T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 3 · max 25 V | 4 |
| Input UVLO threshold UVLO | VIN Falling; T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 2.5 · max 2.9 V | 4 |
| Quiescent current IQ | CC floating; T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 120 · max 145 uA | 4 |
| Quiescent current IQ | CC connected; T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 1 · max 1.5 mA | 4 |
| Start time Ts | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 20 · typ 37 · max 50 us | 4 |
| VBUS soft start time Tv | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 3.5 · max 4.5 ms | 4 |
| SEL input high voltage threshold VSELH | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 2.5 V | 4 |
| SEL input low voltage threshold VSELL | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | max 0.3 V | 4 |
| SEL default output voltage VSELO | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 1.35 · typ 1.5 · max 1.65 V | 4 |
| CC1/CC2 connection detection threshold voltage VCC1_TH/VCC2_TH | T A =25℃, 4.5V ≤ VCC1 ≤ 5.5V | min 0.25 · max 2.04 V | 4 |
Pins, by the datasheet
16- 1 VBUSG
- Connect to the gate of the external NMOS to control the power rail. · p. 2
- 2 VIN
- Power input; connect a 1uF capacitor to GND and connect to the drain of the external NMOS. · p. 2
- 3 NC
- Keep floating. · p. 2
- 4 NC
- Keep floating. · p. 2
- 5 GND
- Ground. · p. 2
- 6 TST1
- Reserved pin; keep floating. · p. 2
- 7 TST2
- Reserved pin; keep floating. · p. 2
- 8 TST3
- Reserved pin; keep floating. · p. 2
- 9 NC
- Keep floating. · p. 2
- 10 NC
- Keep floating. · p. 2
- 11 SEL
- Select maximum PD request voltage: high for 20V, floating for 15V, GND for 5V. · p. 2
- 12 CC2
- Connect to CC2 of the USB Type-C port. · p. 2
- 13 CC1
- Connect to CC1 of the USB Type-C port. · p. 2
- 14 NC
- Keep floating. · p. 2
- 15 NC
- Keep floating. · p. 2
- 16 VBUS
- Connect to the source of the external NMOS. · p. 2
Parameters
12- Current - Supply
- 1.5mA
- Features
- Under-voltage lockout, Soft-start, Automatic protocol detection
- Junction Temperature(Max)
- 150℃
- Number of Channels
- 1C
- Operating Temperature
- -40℃~+85℃
- Output Voltage
- 5V, 15V, 20V
- Protocol
- PD 2.0, PD 3.0
- Thermal Resistance(Junction to Ambient)
- 90℃/W
- Thermal Resistance(Junction to Case)
- 39℃/W
- Type
- Power Receiver Controller
- Voltage - Supply
- 3V~25V
- Voltage - Supply(Absolute Max)
- 30V
Order codes
1- IP2721LCSC C603176
Pinout
16| Pin | Name | Type |
|---|---|---|
| 1 | VBUSG | Output |
| 2 | VIN | Power in |
| 3 | NC | Not connected |
| 4 | NC | Not connected |
| 5 | GND | Power in |
| 6 | NC | Not connected |
| 7 | NC | Not connected |
| 8 | NC | Not connected |
| 9 | NC | Not connected |
| 10 | NC | Not connected |
| 11 | SEL | Input |
| 12 | CC2 | Input/output |
| 13 | CC1 | Input/output |
| 14 | NC | Not connected |
| 15 | NC | Not connected |
| 16 | VBUS | Input |
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Is there a KiCad symbol and footprint for the IP2721?
Yes. The symbol is Interface_USB:IP2721 and the footprint Package_SO:TSSOP-16_4.4x5mm_P0.65mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the IP2721?
TSSOP-16, with 16 pins. Its footprint is drawn on this page.
Where is the IP2721 datasheet?
INJOINIC publishes it: the Datasheet link on this page opens it.
Where can I order the IP2721?
JLCPCB lists it as part C603176, with 0 in stock; the sellers' links on this page open their listings.
What can replace the IP2721?
Parts like it in the library: the PCA9546APW by Texas Instruments, the PCA9546APW by NXP Semiconductors, the SC18IS606PWJ by NXP Semiconductors and the SC18IS602BIPW/S8HP by NXP Semiconductors. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the IP2721?
26 boards in 18 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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