1
User Guide 033
ISL8026xEVAL3Z Evaluation Board User Guide
Description
The ISL8026EVAL3Z and ISL8026AEVAL3Z are intended for use
by customers with requirements for point-of-load applications
sourcing from 2.5V to 5.5V. The ISL8026EVAL3Z and
ISL8026AEVAL3Z are used to demonstrate the performance of
the
ISL8026
and
ISL8026A
, low quiescent high efficiency
synchronous buck regulator.
The ISL8026 and ISL8026A are offered in a 3mmx3mm
16 Ld TQFN package with 1mm maximum height. The
complete area that the converter occupies can be as small as
0.22in
2
.
Key Features
• High efficiency synchronous buck regulator with up to 95%
efficiency
• 1% reference accuracy over load/line/temperature
(-40°C to +85°C)
• Start-up with prebiased output
• Internal soft-start - 1ms or adjustable
• Soft-stop output discharge during disabled
• Adjustable frequency from 500kHz to 4MHz - default at 1MHz
(2MHz for ISL8026A)
• External synchronization up to 4MHz
• Negative OC protection
References
ISL8026, ISL8026A
Datasheet
Specifications
PART
NUMBER
I
OUT
(MAX)
(A)
f
SW
RANGE
(MHz)
V
IN
RANGE
(V)
V
OUT
RANGE
(V)
PART SIZE
(2mm)
ISL8026
6
Programmable
0.5 to 4MHz
2.5 to
5.5
0.6 to
5.5
3x3
ISL8026A
Programmable
1 to 4MHz
NOTES:
1. The Evaluation Boards’ default configuration are V
OUT
= 1.8V for
ISL8026EVAL3Z (f
SW
= 1MHz) and ISL8026AEVAL3Z (f
SW
= 2MHz).
2. V
REF
is 0.6V.
Ordering Information
PART NUMBER
DESCRIPTION
ISL8026EVAL3Z
Evaluation Board For ISL8026
ISL8026AEVAL3Z
Evaluation Board For ISL8026A
FIGURE 1. BLOCK DIAGRAM
VIN
VIN
PG
SYNC
PGND
FB
PGND
PGND/
SGND
VOUT
GND
VIN
GND
ISL8026
EPAD
EN
FS
SS
COMP
VI
N
PHAS
E
PHAS
E
PHAS
E
June 19, 2015
UG033.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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