LTC3251_15 Datasheet, PDF (14/16 Pages) Linear Technology – 500mA High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converter

LTC3251/
LTC3251-1.2/LTC3251-1.5
TYPICAL APPLICATIO S
0.9V Output Continuous/Burst Mode Operation with Shutdown
1-CELL
Li-Ion
OR
3-CELL
NiMH
OFF ON
19
MD0 MD1
2
1µF ³
1µF
4
5,11
LTC3251 ₇
V_IN
V_OUT
C1⁺
C2^{+ 8}
C1^–
C2^{– 6}
10
GND
FB
V_OUT = 0.9V
500mA
1µF
73.2k
10µF
5pF
4.7µF
536k
3251 TA05
3.3V to 1.4V Conversion, Continuous
Spread Spectrum Operation with Shutdown
OFF ON
19
MD0 MD1
V_IN
3.3V
2 ^LTC3251 7
V_IN
V_OUT
1µF
3 _C1+
C2^{+ 8}
1µF
4 _C1–
C2^{– 6}
5,11
GND
10
FB
V_OUT = 1.4V
I_OUT ≤ 350mA
10µF
1µF
4.12k
5.36k
3251 TA03
14
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