SI9169 Datasheet, PDF (4/8 Pages) Vishay Siliconix – High Frequency 1-A Synchronous Buck/Boost Converter

Si9169
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
V_REF vs. V_DD
1.310
1.32
V_REF vs. Temperature
1.305
1.31
1.300
1.30
1.295
1.29
1.290
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
V_DD − (V)
Frequency vs. Temperature
2.00
1.95
1.90
R_OSC = 25 kW
1.85
1.80
1.75
1.70
−100
−50
0
50
100
150
Temperature (_C)
Buck Mode Efficiency, V_O = 2.7 V
100
95
PSM−3 V
90 _{PSM−3.6 V}
85 _{PSM−4.2 V}
80
75
70
PWM−3 V
PWM−3.6 V
PWM−4.2 V
65
60
1
10
100
Load Current (mA)
1000
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4
1.28
−50
10000
0
50
100
150
Temperature (_C)
Frequency vs. R_OSC
1000
100
10
95
90
85
80
75
70
65
60
1
100
R_OSC (kW)
Boost Mode Efficiency, V_O = 3.6 V
PWM−3.3 V
1000
PSM−3.3 V
PSM−2.7 V
PWM−2.7 V
10
100
Load Current (mA)
1000
Document Number: 70945
S-40695—Rev. D, 19-Apr-04