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ISL85413DEMO1Z 数据手册 - Renesas Electronics（瑞萨电子）
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ISL85413DEMO1Z数据手册
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1
DATASHEET
Wide V
IN
300mA Synchronous Buck Regulator
ISL85413
The ISL85413 is a 300mA synchronous buck regulator with an
input range of 3.5V to 40V. It provides an easy to use, high
efficiency low BOM count solution for a variety of applications.
The ISL85413 integrates both high-side and low-side NMOS
FETs and features a PFM mode for improved efficiency at light
loads. This feature can be disabled if forced PWM mode is
desired. The part switches at a default frequency of 700kHz.
By integrating both NMOS devices and providing internal
configuration, minimal external components are required,
reducing BOM count and complexity of design.
With the wide V
IN
range and reduced BOM, the part provides
an easy to implement design solution for a variety of
applications while giving superior performance. It will provide a
very robust design for high voltage industrial applications as
well as an efficient solution for battery powered applications.
The part is available in a small Pb-free 3mmx3mm TDFN
plastic package with an operation junction temperature range
of -40°C to +125°C.
Related Literature
• AN1929, “ISL85413EVAL1Z, ISL85412EVAL1Z Evaluation
Boards”
• AN1931
, “ISL85413DEMO1Z, ISL85412DEMO1Z Wide VIN
Synchronous Buck Regulator - Short Form”
Features
• Wide input voltage range of 3.5V to 40V
• Synchronous operation for high efficiency
• No compensation required
• Integrated high-side and low-side NMOS devices
• Selectable PFM or forced PWM mode at light loads
• Internal switching frequency 700kHz
• Continuous output current up to 300mA
•Internal soft-start
• Minimal external components required
• Power-good and enable functions available
Applications
• Industrial control
•Medical devices
•Portable instrumentation
• Distributed power supplies
• Cloud infrastructure
FIGURE 1. TYPICAL APPLICATION
FIGURE 2. EFFICIENCY vs LOAD, PFM, V
IN
= 12V
f
SW
= 700kHz
Device must be
connected to GND
plane with Vias.
MAX 300mA
+3.5 ... +40V
V
OUT
C5
1µF
L1
PG
VIN
GND
R1
R2
C4
C1
20µF
U1
ISL85413
BOOT
2
VIN
3
PHASE
4
EN
5
PG
6
VCC
7
FB
8
MODE
1
PGND
9
GND
C8
VOUT
C6
0.1µF
MODE
EN
OUTPUT LOAD (A)
40
50
60
70
80
90
100
0 0.03 0.06 0.09 0.12 0.15 0.18 0.21 0.24 0.27 0.30
EFFICIENCY (%)
1.5V
OUT
2.5V
OUT
3.3V
OUT
1.8V
OUT
5.0V
OUT
1.2V
OUT
1.0V
OUT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas LLC 2014, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
March 13, 2015
FN8379.1
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