MAS9251ACAF-T 查看數據表（PDF） - Micro Analog Systems Oy
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MAS9251ACAF-T Datasheet PDF : 11 Pages
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$33/,&$7,21 ,1)250$7,21
N )L[HG 9 9ROWDJH 6XSSO\
CFLY
1µF
OFF ON
VIN = 2.7 V... 4.5 V
CIN
1µF
3
C-
6
CTRL
2
C+
1
VOUT
MAS9251AF
8
VIN
7
NC
PGND
4
SGND
5
VOUT = 5 V
COUT
1µF
DA9251.001
25 October, 2001
N $GMXVWDEOH 9ROWDJH 6XSSO\
CFLY
1µF
OFF ON
VIN = 2.7 V... 4.5 V
CIN
1µF
3
C-
6
CTRL
2
C+
1
VOUT
MAS9251AS
8
VIN
7
FB
PGND
4
SGND
5
VOUT = (1+R1/R2) * VFB
R1
R2
I ≥10µA
COUT
1µF
N.B.! The values of R1 and R2 should be selected so that VOUT does not exceed 5.3 V.
3DUDPHWHU
6\PERO 0LQ 7\S 0D[ 8QLW
1RWH
Output Capacitance
COUT
0.47 1
µF Low ESR (< 0.1 Ω) ceramic
capacitor recommended, especially
with high load current
Flying Capacitance
CFLY
0.68 1
µF Low ESR (< 0.1 Ω) ceramic
capacitor required (note 2)
Input Capacitance
CIN
0.47 1
µF Low ESR (< 0.1 Ω) ceramic
capacitor recommended, especially
with high load current
Values given on the table are minimum requirements unless otherwise specified. When selecting capacitors,
tolerance and temperature coefficient must be considered to make sure that the requirement is met in all
potential operating conditions.
1RWH : Polarized capacitor should never be used, since the capacitor voltage can reverse during operation.
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