User's Manual

LTE

Module BEC CBRS-12 User Manual

 Two VBAT_BB pins for module’s baseband part

The following table shows details of VBAT pins and ground pins.

Table 7: VBAT and GND Pins

3.6.2. Decrease Voltage Drop

The power supply range of the module is from 3.3V to 4.3V. Please make sure the input voltage will never

drop below 3.3V. The following figure shows the voltage drop during Tx power in 4G networks.

VCC

Burst

Transmission

Min. 3.3V

Ripple

Drop

Burst

Transmission

Figure 7: Power Supply Limits during Tx Power

Pin Name Pin No. Description Min. Typ. Max. Unit

VBAT_RF

85, 86

87, 88

Power supply for the

module’s RF part

3.3 3.8 4.3 V

VBAT_BB 155, 156

Power supply for the

module’s baseband part

3.3 3.8 4.3 V

GND

10, 13, 16, 17, 24, 30,

31, 35, 39, 44, 45, 54,

55, 63, 64, 69, 70, 75,

76, 81~84, 89, 90,

92~94, 96~100,

102~106, 108~112,

114~118, 120~126,

128~133, 141, 142, 148,

153, 154, 157, 158, 167,

174, 177, 178, 181, 184,

187, 191, 196, 202~208,

214~299

Ground - 0 - V