EP5388QI Datasheet, PDF (5/14 Pages) Enpirion, Inc. – 800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package

July 2008
EP5388QI
PARAMETER
SYMBOL
Soft-Start Operation
Soft-Start Slew Rate^†
V_ss
Time to 90% V_out
T_ss
† Parameter guaranteed by design.
TEST CONDITIONS
Vout = 3.3V
MIN
1.125
TYP
1.5
2
MAX UNITS
1.875
V/mS
mS
Typical Performance Characteristics
Typical performance characteristics are measured using the application circuit in Figure 1. All
measurements made at 25ºC.
95
95
90
90
85
85
80
80
75
75
70
70
65
65
60
60
55
55
50
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80
Load Current (A)
50
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80
Load Current (A)
Efficiency, V_IN = 3.3V, V_OUT = 2.5V,1.8V,1.5V, 1.2V,
top to bottom.
Efficiency, V_IN = 3.7V, V_OUT = 2.5V,1.8V,1.5V, 1.2V,
top to bottom.
95
90
85
80
75
70
65
60
55
50
0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80
Load Current (A)
Efficiency, V_IN = 5V, V_OUT = 3.3V, 2.5V,1.8V,1.5V, 1.2V,
top to bottom.
Output Ripple, V_IN = 5V, V_OUT = 1.2V; Load = 500mA.
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