AAT3216 Datasheet, PDF (12/16 Pages) List of Unclassifed Manufacturers – 150mA MicroPower™ LDO with PowerOK

AAT3216
150mA MicroPower™ LDO with PowerOK
must be operated in a duty cycled mode. Refer to
the following calculation for duty cycle operation:
P_D(MAX) is assumed to be 211mW
I_GND = 150µA
I_OUT = 150mA
V_IN = 4.2 volts
V_OUT = 2.5 volt
%DC=100(P_D(MAX)/((V_IN-V_OUT)I_OUT+(V_INxI_GND))
%DC=100(211mW/((4.2V-2.5V)150mA+(4.2Vx150µA))
%DC = 85.54%
For a 150mA output current and a 2.7volt drop
across the AAT3216 at an ambient temperature of
85°C, the maximum on time duty cycle for the
device would be 85.54%.
The following family of curves show the safe oper-
ating area for duty cycled operation from ambient
room temperature to the maximum operating level.
Device Duty Cycle vs. V_DROP
V_OUT = 2.5V @ 25 C
3.5
3
2.5
2
1.5
1
0.5
0
0
200mA
10 20 30 40 50 60 70 80 90 100
Duty Cycle (%)
Device Duty Cycle vs. V_DROP
V_OUT= 2.5V @ 50 C
3.5
3
2.5
2
1.5
1
0.5
0
0
200mA
150mA
10 20 30 40 50 60 70 80 90 100
Duty Cycle (%)
Device Duty Cycle vs.
V_OUT = 2.5V @ 85 C
V_DROP
3.5
3
2.5
2
1.5
1
0.5
0
0
200mA
150mA
100mA
10 20 30 40 50 60 70 80 90 100
Duty Cycle (%)
12
3216.2004.01.0.94