MP1522EQ(2003) データシートの表示（PDF） - Monolithic Power Systems
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MP1522EQ Datasheet PDF : 8 Pages
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Monolithic Power Systems
Pin Description
MP1522
25V Step Up Converter
in 3mm QFN Package
FB
1
GND
2
SW
3
6
EN
SW
1
5
GND
GND
2
4
BIAS
FB
3
5
BIAS
4
EN
QFN6
Top View
Marking: MP1522EQ
SOT23-5
Top View
Marking: A2xx
Table 1: Pin Designators
QFN6
Pin #
1
SOT23-5
Pin #
3
Pin Name
FB
2
2
GND
3
1
SW
4
5
BIAS
5
N/A
GND
6
4
EN
Pin Function
Feedback Input. Connect a resistive voltage divider from the output
voltage to FB to set the output voltage. The feedback regulation
threshold is 1.235V.
Ground
Power Switch Output. SW is the drain of the internal MOSFET switch.
Connect the power inductor and output rectifier to SW. SW can swing
between GND and 25V.
Internal Power Input. BIAS powers the internal circuitry. Connect BIAS
to the output voltage. If the input source remains above 3.0V, BIAS
may be connected to the input source to reduce power consumption.
Ground
Regulator On/Off Control Input. A high voltage at EN turns on the
converter, and a low voltage turns it off. When not used, connect EN to
the input source for automatic startup. If EN is driven over 10V, place a
100kΩ resistor in series with EN.
MP1522 Rev 1.7_06/26/03
Monolithic Power Systems, Inc.
3
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