MP5410—LOW START-UP VOLTAGE BOOST CONVERTER WITH FOUR SPDT SWITCHES
MP5410 Rev.1.01 www.MonolithicPower.com 4
3/28/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Pin Function
1 L
Inductor Output Pin. L is the output node of the internal disconnecting switch. Connect the
inductor to this pin.
2 EN
On/Off control input. A logic high input turns on the chip. A logic low input turns off the chip.
This pin should not be left floating.
3 S1
Channel B SPDT Switch Control Input. If the chip is enabled, a logic low input switches B to
GND and a logic high input switches B to OUT. This pin should not be left floating.
4 S0
Channel A SPDT Switch Control Input. If the chip is enabled, a logic low input switches A to
GND and a logic high input switches A to OUT. This pin should not be left floating.
5 A Channel A SPDT Switch Output.
6 B Channel B SPDT Switch Output.
7 C Channel C SPDT Switch Output.
8 D Channel D SPDT Switch Output.
9 S3
Channel D SPDT Switch Control Input. If the chip is enabled, a logic low input switches D to
GND and a logic high input switches D to OUT. This pin should not be left floating.
10 S2
Channel C SPDT Switch Control Input. If the chip is enabled, a logic low input switches C to
GND and a logic high input switches C to OUT. This pin should not be left floating.
11 FB
Regulation Feedback Input. Connect to an external resistive voltage divider from the output
to FB to set the boost converter output voltage. Floating this pin to achieve fixed 10V output.
12 ISET
Constant Peak Current Set. Connect to an external resistor to GND to set the boost
converter peak current.
13 GND Ground.
14 IN
Input Supply Pin. IN pin powers the internal circuitry and is the input node of the internal
disconnecting switch. Must be locally bypassed.
15 SW
Output Switch Node. SW is the drain node of the internal low-side N-Channel MOSFET.
Connect the inductor to SW to complete the step-up converter.
16 OUT Step-up Converter Output.
Exposed
Pad
Connect exposed pad to GND plane in PCB for proper thermal performance.
