Pin description (continued) – Rainbow Electronics MAX17117 User Manual
Page 10
Internal-Switch Boost Regulator with Integrated
7-Channel Scan Driver, Op Amp, and LDO
MAX17117
10 _____________________________________________________________________________________
Pin Description (continued)
PIN
NAME
FUNCTION
25
PGND
Power Ground. Source connection of the internal step-up regulator power switch.
26
LX
Switching Node. Connect inductor/catch diode here and minimize trace area for lowest EMI.
27
ENA
Chip-Enable Control and OCP Set Input. When ENA = low, the step-up converter and op amp are
disabled, the LDO remains active, and the level-shifter outputs are high impedance.
28
IN
Step-Up Regulator and Low-Dropout Regulator Supply. Bypass IN to AGND with a 1FF or greater
ceramic capacitor.
29
LDOO
Internal Linear Regulator Output. Bypass LDOO to AGND with a 1FF capacitor.
30
LDOADJ
Linear Regulator Feedback Input. Reference voltage is 1.24V nominal.
31
DTS
Gate-Shading Discharge Time Adjust
32
SS
Step-Up Regulator Soft-Start Control
—
EP
Exposed Backside Pad. Connect to the analog ground plane for proper electrical and thermal
performance.