ISL85415 查看數據表（PDF） - Renesas Electronics
零件编号
产品描述 (功能)
生产厂家
ISL85415 Datasheet PDF : 31 Pages
| |||
Datasheet
ISL85415
Wide VIN 500mA Synchronous Buck Regulator
The ISL85415 is a 500mA synchronous buck
regulator with an input range of 3V to 36V. The device
provides an easy-to-use high-efficiency, low
BOM-count solution for a variety of applications.
The ISL85415 integrates both high-side and low-side
NMOS FET's and features a PFM mode for improved
efficiency at light loads. The feature can be disabled if
forced PWM mode is desired. The device switches at
a default frequency of 500kHz, but can also be
programmed using an external resistor from 300kHz
to 2MHz. The ISL85415 has the ability to use internal
or external compensation. By integrating both NMOS
devices and providing internal configuration options,
minimal external components are required, reducing
both the 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 provides a very robust design for
high-voltage Industrial applications and delivers an
efficient solution for battery powered applications.
The ISL85415 is available in a small Pb-free
4mmx3mm DFN plastic package with an operation
temperature range of -40°C to +125°C.
Related Literature
For a full list of related documents, visit our website:
• ISL85415 device page
Features
• Wide input voltage range 3V to 36V
• 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 fixed (500kHz) or adjustable switching
frequency 300kHz to 2MHz
• Continuous output current up to 500mA
• Internal or external soft-start
• Minimal external components required
• Power-good and enable functions available.
Applications
• Industrial control
• Medical devices
• Portable instrumentation
• Distributed power supplies
• Cloud infrastructure
VOUT
CBOOT
100nF
L1
22µH
COUT
10µF
CVIN
10µF
1 SS
2
SYNC
3 BOOT
4 VIN
5 PHASE
6
PGND
GND
FS 12
11
COMP
10
FB
9
VCC
PG
EN
R2
R3
CVCC
1µF
Internal Default Parameter Selection
Figure 1. Typical Application
100
95
VIN = 15V
VIN = 12V
VIN = 5V
90
85
80
CFB
75
70
VIN = 24V
65
VIN = 33V
60
55
50
0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50
Output Load (A)
Figure 2. Efficiency vs Load Current and
Supply Voltage
FN8373 Rev.5.01
Jun.4.20
Page 1 of 30
Share Link: 