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ISL85412 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL85412
部品説明 150mA Synchronous Buck Regulator
メーカ Intersil
ロゴ Intersil ロゴ 



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ISL85412 Datasheet, ISL85412 PDF,ピン配置, 機能
DATASHEET
Wide VIN 150mA Synchronous Buck Regulator
ISL85412
Features
The ISL85412 is a 150mA 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 ISL85412 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 VIN 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”
• 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 150mA
• 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
AN1931, “ISL85413DEMO1Z, ISL85412DEMO1Z Wide VIN
Synchronous Buck Regulator - Short Form”
MODE
VIN
GND
VOUT
GND
+3.5 ... +40V
C1
20µF
MAX 150mA
C8
VOUT
C6
0.1µF
U1 ISL85412
1 MODE
FB
2 BOOT
VCC
3 VIN
PG
R1
8
7 R2
C5
6 1µF
C4
4 PHASE
fSW = 700kHz
EN 5
L1 Device must be
connected to GND
plane with vias.
FIGURE 1. TYPICAL APPLICATION
100
90
80
70
PG
1.5VOUT
3.3VOUT
EN
60
50
1.2VOUT
1.0VOUT
1.8VOUT
2.5VOUT
5.0VOUT
40
0.00
0.03
0.06
0.09
0.12
OUTPUT LOAD (A)
FIGURE 2. EFFICIENCY vs LOAD, PFM, VIN = 12V
0.15
March 13, 2015
FN8378.1
1
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.

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