Evaluation Board Manual
R12UZ0080EU0102 Rev.1.02
Page 1
Apr 1, 2022
© 2022 Renesas Electronics
The ISL9122AIIN-EVZ and ISL9122AIRN-EVZ
platform allows quick evaluation of the high-
performance features of the
buck-boost
regulator. The ISL9122A is a highly integrated non-
inverting buck-boost switching regulator that accepts
input voltages both above or below the regulated
output voltage. It features an extremely low quiescent
current consumption, excellent efficiency and an I
2
C
interface that allows you to access its internal
registers, for output voltage and operation mode
control.
Features
▪ Small, compact design
▪ I
2
C interface for programmable V
OUT
, slew rate and
various operation modes (Forced Bypass,
Auto-PFM, Forced PWM)
▪ Connectors, test points, and jumpers for easy
probing
Specifications
The boards are designed to operate at the following
operating conditions:
▪ Input voltage rating from 1.8V to 5.5V
▪ Programmable output voltage range of 1.8V to
5.375V and selectable transition slew rate through
I
2
C interface
▪ Up to 500mA output current (V
IN
> V
OUT
> 2.5V)
▪ Operating temperature range: -40°C to +85°C
Figure 1. ISL9122AIIN-EVZ, ISL9122AIRN-EVZ Block Diagram
VOUT
VOUT
VIN
VIN
GND
LX1
LX2
EN
GND
GND
SDA
SCL
I
2
C
ISL9122AIIN-EVZ, ISL9122AIRN-EVZ
