Rainbow Electronics MAX8982X - Manual (Page 32)

Power-Management ICs for
ICERA E400/E450 Platform
MAX8982A/MAX8982X
32
Table 2. External Component List for Figure 1
Note: Input/output capacitance should be as close as possible to the IC. All capacitors are ceramic X5R or X7R, unless otherwise noted.
LOCATION EXTERNAL COMPONENTS NOTES
IN1A, IN1B 3 x 330FF tantalum capacitors Buck stability and GSM PA supply
IN3 2.2FF Input for LDO4 and LDO9
IN4 1.0FF Input for LDO8
OUT1 4.7FF
LDO compensation and load transient
response
OUT2 1.0FF LDO compensation
OUT3 1.0FF LDO compensation
OUT4 2.2FF LDO compensation
OUT5 1.0FF LDO compensation
OUT6 1.0FF LDO compensation
VSIM (OUT7) 1.0FF LDO compensation
OUT8 1.0FF LDO compensation
OUT9 2.2FF LDO compensation
V DDA , V DDB
Total capacitance R total output capacitance
for LDO1, LDO2, LDO3, LDO5, LDO6, and
VSIM. Use a 10FF capacitor on V
DDA /V DDB
as recommended.
All LDOs stability
BUCK1 for BB Core 2.2FF For low noise, 1.2A continuous load
BUCK2 for BB System IO 2.2FF For low noise
BUCK3 as LDO Input 2.2FF For low noise
BUCK4 for GSM PA/UMTS PA 2 x 22FF Supply for both GSM PA and UMTS PA
LX1 1FH to 4.7FH 2.2FH recommended (Table 60)
LX2 1FH to 4.7FH 1.0FH recommended (Table 60)
LX3 1FH to 4.7FH 2.2FH recommended (Table 60)
LX4 1FH to 4.7FH 2.2FH recommended (Table 60)
REFBP 0.1FF Noise filter
EN A pulldown resistor, if necessary.
Any Bump Required to Pass 8kV
Module Level ESD
0.1FF Absorb ESD energy