PIN

NAME

FUNCTION

MAX15014/

MAX15017

MAX15015/

MAX15016

—

23

C-

Charge-Pump Flying Capacitor Negative Connection (MAX15015/MAX15016 only)

25

25

DVREG

Gate Drive Supply for the High-Side MOSFET Driver. Connect to REG and to

the anode of the bootstrap diode for MAX15014/MAX15017. Connect to REG for

MAX15015/MAX15016.

—

28

C+

Charge-Pump Flying Capacitor Positive Connection (MAX15015/MAX15016 only).

Connect to the positive terminal of the external pump capacitor and to the anode of

the bootstrap diode.

29

29

SYNC

Oscillator Synchronization Input. SYNC can be driven by an external clock to

synchronize the switching frequency. Connect SYNC to SGND when not used.

31

31

COMP

Error Amplifier Output. Connect COMP to the compensation feedback network.

32

32

FB

Feedback Regulation Point. Connect to the center tap of a resistive divider from

converter output to SGND to set the output voltage. The FB voltage regulates to the

voltage present at SS (1.235V).

33

33

SS

Soft-Start and Reference Output. Connect a capacitor from SS to SGND to set the

soft-start time. See the Applications Information section to calculate the value of the

CSS capacitor.

34

34

REG

Internal Regulator Output. 5V output for the MAX15015/MAX15016 and 8V output for

the MAX15014/MAX15017. Bypass to SGND with at least a 1µF ceramic capacitor.

36

36

IN_SW

Supply Input Connection. Connect to IN_LDO and an external voltage source from

4.5V to 40V. EN_SW and EN_SYS must be high and IN_SW must be above its

UVLO threshold for operation of the switching regulator.

—

—

EP

Exposed Pad. The exposed pad must be electrically connected to SGND. For an

effective heatsinking, solder the exposed pad to a large copper plane.

MAX15014–MAX15017

1A, 4.5V to 40V Input Buck Converters with

50mA Auxiliary LDO Regulators

www.maximintegrated.com

Maxim Integrated │ 13

Pin Description (continued)