Datasheet
TUSB1210
www.ti.com
SLLSE09F –NOVEMBER 2009–REVISED AUGUST 2012
5 Power Module
This chapter describes the electrical characteristics of the voltage regulators and timing characteristics of
the supplies digitally controlled within the TUSB1210.
5.1 Power Providers
Table 5-1. Summary of TUSB1210 Power Providers
(1)
TYPICAL MAXIMUM
NAME USAGE TYPE
VOLTAGE (V) CURRENT (mA)
V
DD15
Internal LDO 1.5 50
V
DD18
External LDO 1.8 30
V
DD33
Internal LDO 3.1 15
(1) V
DD33
may be supplied externally, or by shorting the V
DD33
pin to V
BAT
pin provided V
BAT
min is in
range [3.2 V : 3.6 V]. Note that the V
DD33
LDO will always power-on when the chip is enabled,
irrespective of whether V
DD33
is supplied externally or not. In the case the V
DD33
pin is not supplied
externally in the application, the electrical specs for this LDO are provided below.
5.1.1 V
DD33
Regulator
The V
DD33
internal LDO regulator powers the USB PHY, charger detection, and OTG functions of the USB
subchip inside TUSB1210. Table 5-2 describes the regulator characteristics.
V
DD33
regulator takes its power from V
BAT
.
Since the USB2.0 standard requires data lines to be biased with pullups biased from a supply greater than
3 V, and since V
DD33
regulator has an inherent voltage drop from its input, V
BAT
, to its regulated output,
TUSB1210 will not meet USB 2.0 Standard if operated from a battery whose voltage is lower than 3.3 V.
Table 5-2. V
DD33
Internal LDO Regulator Characteristics
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
INVDD33
Input voltage V
BAT
USB V
VDD33
typ + 0.2 3.6 4.5 V
VUSB3V3_VSEL = ‘000 2.4 2.5 2.6
VUSB3V3_VSEL = ‘001 2.65 2.75 2.85
VUSB3V3_VSEL = ‘010 2.9 3.0 3.1
VUSB3V3_VSEL = ‘011 (default) 3.0 3.1 3.2
V
VDD33
Output voltage ON mode, V
VUSB3V3_VSEL = ‘100 3.1 3.2 3.3
VUSB3V3_VSEL = ‘101 3.2 3.3 3.4
VUSB3V3_VSEL = ‘110 3.3 3.4 3.5
VUSB3V3_VSEL = ‘111 3.4 3.5 3.6
Active mode 15
I
VDD33
Rated output current V
BAT
USB mA
Suspend/reset mode 1
5.1.2 V
DD18
Supply
The V
DD18
supply is powered externally at the V
DD18
pin. See Table 8-1 for external components.
5.1.3 V
DD15
Regulator
The V
DD15
internal LDO regulator powers the USB subchip inside TUSB1210. Table 5-3 describes the
regulator characteristics.
Copyright © 2009–2012, Texas Instruments Incorporated Power Module 13
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