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ELM91503AA-N Datasheet(PDF) 2 Page - ELM Technology Corporation

Part # ELM91503AA-N
Description  CMOS PFM Step-up DC/DC converter and controller
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Manufacturer  ELM-TECH [ELM Technology Corporation]
Direct Link  http://www.elm-tech.com
Logo ELM-TECH - ELM Technology Corporation

ELM91503AA-N Datasheet(HTML) 2 Page - ELM Technology Corporation

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background image
2
SOT-89(TOP VIEW)
1
2
3
1
3
2
1
2
3
SOT-23(TOP VIEW)
SC-70(TOP VIEW)
ELM91xx1AA, ELM91xx3AA
ELM91xx1BA, ELM91xx3BA
ELM91xx1CA, ELM91xx3CA
Pin No.
Pin name
1
VSS
2
VOUT
3
ELM91xx1AA: LX
ELM91xx3AA: EXT
Pin No.
Pin name
1
VSS
2
ELM91xx1BA: LX
ELM91xx3BA: EXT
3
VOUT
Pin No.
Pin name
1
VSS
2
ELM91xx1CA: LX
ELM91xx3CA: EXT
3
VOUT
■Pin configuration
■Standard circuit
ELM91xxxxA CMOS PFM Step-up DC/DC converter and controller
+
Cout
MA2Z748
Vin
Vout
LX
VOUT
VSS
+
Cin
ELM91xx1xA
47 F
47 F
100 H
+
ELM91xx3xA
MA735
Vin
Vout
EXT
VOUT
+
VSS
Cin
100 F
Cout
100 F
33 H
VSS
LX
+ -
Vref
P.F.M.
OSC
Start-up
Limiter
Vlx
VOUT
VSS
+ -
Vref
P.F.M.
OSC
EXT
Start-up
VOUT
ELM91xx1xA
ELM91xx3xA
■Block diagram
22 -


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