21
6201C–PMAAC–31-Jul-07
AT73C239
13.3 LDO3
Table 13-7. LDO3 Parametric Table
Symbol Parameter Comments Min Typ Max Units
V
DD3
Operating supply voltage Switching Regulated 3.0 3.3 3.6 V
V
O3
Output voltage
Factory programmed 1.75 1.8 1.85 V
Programmable 1.45 1.5 1.55 V
Programmable 1.18 1.23 1.28 V
I
3
Load current 60 mA
I
QC
Quiescent current 300 µA
I
SC
Shutdown current HiZ output 1 µA
I
SH
Short circuit current 200 mA
t
R
Startup time 100 µs
∆V
DC
Line regulation static From 3.0V to 3.6V 2 mV
∆V
DC
Load regulation static
From 10% to 100% I
3
2
mV
From 0 to 100% I
3
3
∆V
TRAN
Line regulation dynamic
From 3.1V to 3.6V
t
R
= t
F
= 5 µs, I
3
= 60 mA
2mV
∆V
TRAN
Load regulation dynamic
From 10% to 100%
I
1
, t
R
= t
F
= 5 µs,
3mV
PSRR Power Supply Rejection Ratio
Sine Wave, 100 kHz frequency,
3.3V mean 200 m V
PP
40 dB
Sine Wave, 10 kHz frequency,
3.3V mean, 200 m V
PP
50 dB
Sine Wave, 1 kHz frequency,
3.3V mean 200 m V
PP
70 dB
∆V
OUT
Startup Overshoot 30 mV
V
N
Output Noise 10 Hz - 100 kHz, without V
BG
35 µV
RMS
V
NT
Total Output Noise 10 Hz - 100 kHz 45 µV
RMS
Table 13-8. External Components
Schematic Reference Description
C
OUT3
X5R 1 µF ± 20% ceramic capacitor
Table 13-9. Control Modes
onldo3 sel3[0] sel3[1] VO3
0 X X HiZ
1001.8V
1101.5V
1011.23V
