CP2102-GMR Silicon Laboratories Inc, CP2102-GMR Datasheet - Page 14

• Manufacturer Part Number: CP2102-GMR
• Description: USB to UART Bridge 28-Pin QFN T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2102-GMR

• Package: 28QFN
• Operating Temperature: -40 to 85 °C
• Applications: USB
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.6 V
• Supply Current (max): 100 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1161 - KIT EVALUATION FOR CP2102
• Lead Free Status / Rohs Status: Details
• Other names: 336-1802-2; CP2102-GMR; Q4435029

CP2102
8. Voltage Regulator
The CP2102 includes an on-chip 5 to 3 V voltage regulator. This allows the CP2102 to be configured as either a
USB bus-powered device or a USB self-powered device. These configurations are shown in Figure 6 and Figure 7.
When enabled, the 3 V voltage regulator output appears on the V
devices. See Table 10 for the voltage regulator electrical characteristics.
Alternatively, if 3 V power is supplied to the V
the voltage regulator disabled. For this configuration, it is recommended that the REGIN input be tied to the 3 V net
to disable the voltage regulator. This configuration is shown in Figure 8.
The USB max power and power attributes descriptor must match the device power usage and configuration. See
application note “AN144: CP210x Customization Guide” for information on how to customize USB descriptors for
the CP2102.
Note: It is recommended that additional decoupling capacitance (e.g., 0.1 µF in parallel with 1.0 µF) be provided on the REGIN
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Table 10. Voltage Regulator Electrical Specifications
–40 to +85 °C unless otherwise specified.
Input Voltage Range
Output Voltage
VBUS Detection Input Threshold
Bias Current
*Note: The maximum regulator supply current is 100 mA.
input.
From VBUS
Power Net
Parameter
To 3 V
Figure 6. Configuration 1: USB Bus-Powered
REGIN
VBUS
V
DD
DD
CP2102
Output Current = 1 to 100 mA*
pin, the CP2102 can function as a USB self-powered device with
Rev. 1.4
Conditions
5 V In
DD
Voltage Regulator (REG0)
pin and can be used to power external 3 V
VBUS Sense
3 V Out
Min
4.0
3.0
1.0
—
Typ
3.3
1.8
90
—
Power Net
Device
Max
5.25
3.6
2.9
—
Units
µA
V
V
V