ROHM Power Management Switch ICS for PCs and Digital Consumer Products BD2227G User Guide
Summary
This technical note documents the ROHM BD2226G and BD2227G high-side power switch ICs optimized for USB applications. These N-channel MOSFET switches feature 150mΩ typical on-resistance, over-current detection, thermal shutdown, under-voltage lockout, and soft-start functionality. Operating voltage range is 2.7V to 5.5V in SSOP5 package. Targeted at electronics engineers designing power management circuits for PCs, digital consumer products, and USB devices.
Page 1 Text Content
Power Management Switch ICs for PCs and Digital Consumer Products
1ch Small Package High Side Switch ICs for USB Devices and Memory Cards
BD2226G, BD2227G No.11029EBT18
●Description BD2226G and BD2227G are low on-resistance N-channel MOSFET high-side power switches, optimized for Universal Serial Bus (USB) applications. BD2226G and BD2227G are equipped with the function of over-current detection, thermal shutdown, under-voltage lockout and soft-start.
●Features 1) Low On-Resistance (Typ. 150mΩ) N-channel MOSFET Built-in 2) Over-Current Detection 3) Thermal Shutdown 4) Open-Drain Fault Flag Output 5) Under-Voltage Lockout 6) Soft-Start Circuit 7) Input Voltage Range: 2.7V ~ 5.5V 8) Control Input Logic Active-High (BD2226G), Active-Low (BD2227G) 9) SSOP5 Package
●Absolute Maximum Ratings (Ta=25℃)
Parameter Symbol Ratings Unit
VIN supply voltage VIN -0.3 ~ 6.0 V
EN(/EN) input voltage VEN(/EN) -0.3 ~ 6.0 V
/OC voltage V/OC -0.3 ~ 6.0 V
/OC sink current I/OC 5 m A
VOUT voltage VOUT -0.3 ~ VIN + 0.3 V
Storage temperature TSTG -55 ~ 150 ℃
Power dissipation Pd 675 *1 m W
*1 Mounted on 70mm x 70mm x 1.6mm glass epoxy board. Reduce 5.4m W per 1℃ above 25℃ * This IC is not designed to be radiation-proof.
●Operating Conditions
Ratings
Parameter Symbol Unit
Min. Typ. Max.
VIN operating voltage VIN 2.7 5.0 5.5 V
Operating temperature TOPR -40 - 85 ℃
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM Power Management Switch ICS for PCs and Digital Consumer Products BD2227G User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 13 |
| File Size | 293.45 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
What is the typical on-resistance of these switches?
The typical on-resistance is 150mΩ.
What input voltage range is supported?
The supported input voltage range is 2.7V to 5.5V.
How do BD2226G and BD2227G control logic differ?
BD2226G has an Active-High control input, while BD2227G is Active-Low.
What protective features do these switches have?
They include over-current detection, thermal shutdown, under-voltage lockout, and a soft-start circuit.
What is the over-current threshold?
The typical over-current threshold is 1000mA.