Datasheet

TPS65930/TPS65920
www.ti.com SWCS037G–MAY 2008–REVISED APRIL 2011
Table 4-15. VRRTC LDO Regulator Characteristics (continued)
Parameter Test Conditions Min Typ Max Unit
I
OUT
Rated output current On mode 30 mA
Sleep mode 1
DC load regulation On mode: I
OUT
= I
OUTmax
to 0 100 mV
DC line regulation On mode, V
IN
= V
INmin
to V
INmax
at I
OUT
= I
OUTmax
100 mV
Turn-on time I
OUT
= 0, at V
OUT
= V
OUTfinal
± 3% 100 μs
Wake-up time On mode from low power to On mode, I
OUT
= 0, at 100 μs
V
OUT
= V
OUTfinal
± 3%
From backup to On mode, I
OUT
= 0, at V
OUT
= 100
V
OUTfinal
± 3%
Ripple rejection (VRRTC) f < 10 kHz 50 dB
10 kHz < f < 100 kHz 40
f = 1 MHz 30
V
IN
= V
OUT
+ 1 V, I
O
= I
MAX
Ground current On mode, I
OUT
= 0 70 μA
On mode, I
OUT
= I
OUTmax
100
Sleep mode, I
OUT
= 0 10
Sleep mode, I
OUT
= 1 mA 11
Off mode 1
V
DO
Dropout voltage
(1)
On mode, I
OUT
= I
OUTmax
250 mV
Transient load regulation I
LOAD
: I
MIN
– I
MAX
–40 40 mV
Slew: 40 mA/μs
Transient line regulation V
IN
drops 500 mV 10 mV
Slew: 40 mV/μs
Overshoot Softstart 3%
Pull down resistance Default in off mode 250 320 450 Ω
(1) For nominal output voltage
4.4 Power Consumption
Table 4-16 describes the power consumption depending on the use cases.
NOTE
Typical power consumption is obtained in the nominal operating conditions and with the
TPS65920 and TPS65930 devices in stand-alone configuration.
Table 4-16. Power Consumption
Mode Description Typical Consumption
Only the RTC date is maintained with a couple of registers in the backup
Backup domain. No main source is connected. Consumption is on the backup VBAT not present 2.25 * 3.2 = 7.2 μW
battery.
The phone is apparently off for the user, a main battery is present and
well-charged. The RTC registers and registers in the backup domain are
Wait on VBAT = 3.8 V 64 × 3.8 = 243.2 μW
maintained. The wake-up capabilities (such as the PWRON button) are
available.
The subsystem is powered by the main battery, all supplies are enabled
Active no load with full current capability, internal reset is released, and the associated VBAT = 3.8 V 3291 × 3.8 = 12505 μW
processor is running.
The main battery powers the subsystem, selected supplies are enabled but
Sleep no load in low-consumption mode, and the associated processor is in low-power VBAT = 3.8 V 496 × 3.8 = 1884.4 μW
mode.
Copyright © 2008–2011, Texas Instruments Incorporated Power Module 47
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