UMTS/HSPA+ Standard Module Series
UC200T-GL Mini PCIe Hardware Design
UC200T-GL_Mini_PCIe_Hardware_Design 21 / 51
3.5. Power Supply
The following table shows pin definition of power supply interface.
Table 6: Definition of Power Supply Interface
The typical supply voltage of UC200T-GL Mini PCIe is 3.3V. In the 2G network, the input peak current may
reach 2.7A during the transmitting time. Therefore, the power supply must be able to provide a rated
output current of 2.7A at least, and a bypass capacitor of no less than 470µF with low-ESR should be
used to prevent the voltage from dropping.
The following figure shows a reference design of power supply where R2 and R3 are 1% tolerance
resistors and C3 is a low-ESR capacitor.
Figure 3: Reference Circuit of Power Supply
3.6. UART Interfaces
UC200T-GL Mini PCIe provides one main UART interface.
Pin Name
Pin No.
I/O
Power Domain Description
VCC_3V3
2, 39, 41, 52
PI 3.0V~3.6V
Typically 3.3V DC supply
GND
4, 9, 15, 18, 21,
26, 27, 29, 34,
35, 37, 40, 43, 50
Mini card ground
