SLLSEL4A September 2014 – October 2014 TUSB1210-Q1
PRODUCTION DATA.
VBUS, and VBAT, and VDDIO, are needed for power the TUSB1210-Q1. Recommended operation is for VBAT to be present before VDDIO. Applying VDDIO before VBAT to TUSB1210 is not recommended as there is a diode from VDDIO to VBAT which will be forward biased when VDDIO is present but VBAT is not present. TUSB1210-Q1 does not strictly require VBUS to function.
It is recommended that almost one board ground plane be used in the design. This provides the best image plane for signal traces running above the plane. An earth or chassis ground is implemented only near the USB port connectors on a different plane for EMI and ESD purposes.
Table 13 is a summary of TUSB1210-Q1 power providers.
NAME | USAGE | TYPE | TYPICAL VOLTAGE (V) |
MAXIMUM CURRENT (mA) |
---|---|---|---|---|
VDD15 | Internal | LDO | 1.5 | 50 |
VDD18 | External | LDO | 1.8 | 30 |
VDD33 | Internal | LDO | 3.1 | 15 |
The VDD33 internal LDO regulator powers the USB PHY, charger detection, and OTG functions of the USB subchip inside TUSB1210-Q1. Power Characteristics describes the regulator characteristics.
VDD33 regulator takes its power from VBAT.
Since the USB2.0 standard requires data lines to be biased with pullups biased from a supply greater than 3 V, and since VDD33 regulator has an inherent voltage drop from its input, VBAT, to its regulated output, TUSB1210-Q1 will not meet USB 2.0 Standard if operated from a battery whose voltage is lower than
3.3 V.
The VDD18 supply is powered externally at the VDD18 pin. See Table 11 for external components.
The VDD15 internal LDO regulator powers the USB subchip inside TUSB1210-Q1. Power Characteristics describes the regulator characteristics.
Table 14 describes the power consumption depending on the use cases.
NOTE
The typical power consumption is obtained in the nominal operating conditions and with the TUSB1210-Q1 standalone.
MODE | CONDITIONS | SUPPLY | TYPICAL CONSUMPTION |
UNIT |
---|---|---|---|---|
OFF Mode | VBAT = 3.6 V, VDDIO = 1.8 V, VDD18 = 1.8 V, CS = 0 V | IVBAT | 8 | µA |
IVDDIO | 3 | |||
IVDD18 | 5 | |||
ITOTAL | 16 | |||
Suspend Mode | VBUS = 5 V, VBAT = 3.6 V, VDDIO = 1.8 V, No clock | IVBAT | 204 | µA |
IVDDIO | 3 | |||
IVDD18 | 3 | |||
ITOTAL | 210 | |||
HS USB Operation (Synchronous Mode) |
VBAT = 3.6 V, VDDIO = 1.8 V, VDD18 = 1.8 V, active USB transfer | IVBAT | 24.6 | mA |
IVDDIO | 1.89 | |||
IVDD18 | 21.5 | |||
ITOTAL | 48 | |||
FS USB Operation (Synchronous Mode) |
VBAT = 3.6 V, VDDIO = 1.8 V, active USB transfer | IVBAT | 25.8 | mA |
IVDDIO | 1.81 | |||
IVDD18 | 4.06 | |||
ITOTAL | 31.7 | |||
Reset Mode | RESETB = 0 V, VBUS = 5 V, VBAT = 3.6 V, VDDIO = 1.8 V, No clock | IVBAT | 237 | µA |
IVDDIO | 3 | |||
IVDD18 | 3 | |||
ITOTAL | 243 |