Datasheet

TPS65930/TPS65920
www.ti.com SWCS037G–MAY 2008–REVISED APRIL 2011
4.1.7 VAUX2 LDO Regulator
The VAUX2 general-purpose LDO regulator powers the auxiliary devices. Table 4-9 describes the
regulator characteristics.
Table 4-9. VAUX2 LDO Regulator Characteristics
Parameter Test Conditions Min Typ Max Unit
Output Load Conditions
Filtering capacitor Connected from VAUX2.OUT to analog ground 0.3 1 2.7 μF
Filtering capacitor ESR 20 600 mΩ
Electrical Characteristics
V
IN
Input voltage 2.7 3.6 4.5 V
1.3
1.5
1.7
1.8
1.9
2.0
V
OUT
Output voltage On mode and low-power mode –3% 3% V
2.1
2.2
2.3
2.4
2.5
2.8
On mode 100
I
OUT
Rated output current mA
Low-power mode 5
dc load regulation On mode: I
OUT
= I
OUTmax
to 0 20 mV
dc line regulation On mode, V
IN
= V
INmin
to V
INmax
at I
OUT
= I
OUTmax
3 mV
Turn-on time I
OUT
= 0, C
L
= 1 μF (within 10% of V
OUT
) 100 μs
Wake-up time Full load capability 10 μs
f < 10 kHz 50
10 kHz < f < 100 kHz 40
Ripple rejection dB
f = 1 MHz 25
V
IN
= V
OUT
+ 1 V, I
O
= I
Max
On mode, I
OUT
= 0 70
On mode, I
OUT
= I
OUTmax
170
Ground current Low-power mode, I
OUT
= 0 17 μA
Low-power mode, I
OUT
= 5 mA 20
Off mode at 55°C 1
V
DO
Dropout voltage On mode, I
OUT
= I
OUTmax
250 mV
I
Load
: I
Min
– I
Max
Transient load regulation –40 40 mV
Slew: 40 mA/μs
V
IN
drops 500 mV
Transient line regulation 10 mV
Slew: 40 mV/μs
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