MIC23250 Datasheet, PDF (5/15 Pages) Micrel Semiconductor – 4MHz Dual 400mA Synchronous Buck Regulator with HYPER LIGHT LOAD™

Micrel, Inc.
Typical Characteristics (Continued)
Efficiency V_OUT = 1.575V
100
90 VIN = 2.7V ^{VIN = 3.0V}
80
70
60 ^{VIN = 4.2V}
VIN = 3.6V
50
40
30
20
10
L = 1µH
C_OUT = 4.7µF
01
10
100
1000
LOAD (mA)
Dual Output Efficiency
100
90
VIN = 3.3V
80
70 _{VIN = 3.6V}
60
VIN = 4.2V
50
40 _{VOUT1 = 1.575V}
30 VOUT2 = 1.8V
20 ^{Load1 = Load2}
L1 = L2 = 1µH
10 _{COUT1 = COUT2 = 4.7µF}
01
10
100
LOAD (mA)
1000
MIC23250
December 2007
5
M9999-121707-A