DataSheet.jp

ISL8540 の電気的特性と機能

ISL8540のメーカーはIntersil Corporationです、この部品の機能は「DC/DC Power Switching Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL8540
部品説明 DC/DC Power Switching Regulator
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




このページの下部にプレビューとISL8540ダウンロード(pdfファイル)リンクがあります。

Total 16 pages

No Preview Available !

ISL8540 Datasheet, ISL8540 PDF,ピン配置, 機能
®
Data Sheet
September 9, 2008
ISL8540
FN6495.5
DC/DC Power Switching Regulator
The ISL8540 is a step down DC/DC power switching
regulator which accepts 9.0V to 40V input and provides a 2A
output current. The output voltage can be set in the range
between 1.21V and 35V by means of an external divider.
The device uses an internal power DMOS transistor with a
typical rDS(ON) of 0.19Ω to obtain very high efficiency and
high switching speed. A switching frequency in the range of
100kHz to 600kHz can be realized (the maximum power
dissipation of the various packages must be observed).
Notable features of this next generation of DC/DC converter
include pulse-by-pulse current limit for FET protection,
hiccup mode for short circuit protection, voltage feedforward
regulation, Frequency SYNC, soft-start, low standby current
of 60µA typical in the disabled state, and thermal shut-down.
The device is available in a 20 Ld HTSSOP package.
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL8540IVEZ ISL85 40IVEZ -40 to +85 20 Ld HTSSOP MDP0048
ISL8540IVEZ-T* ISL85 40IVEZ -40 to +85 20 Ld HTSSOP MDP0048
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish, which is
RoHS compliant and compatible with both SnPb and Pb-free soldering
operations). Intersil Pb-free products are MSL classified at Pb-free
peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
Features
• Voltage feedforward mode
• Step down DC/DC supporting up to 2A
• Input voltage range of 9.0V to 40V
• Internal reference of 1.21V ±1%
• Adjustable output voltage range of 1.21V to 35V
• Adjustable switching frequency 100kHz to 600kHz
• Frequency SYNC pin
• Zero load current operation
• Pulse-by-pulse mode current limit and Hiccup mode
• Low standby current of 60µA typical
• Thermal shut-down
• Load dump to 100V for 400ms
• Pb-free (RoHS compliant)
Applications
• Non-isolated telecom power supply
• Industrial and automotive power supplies
• Portable computers
• Battery chargers
• Distributed power systems
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
Pinout
ISL8540
(20 LD HTSSOP)
TOP VIEW
VIN 1
VIN 2
LX 3
LX 4
BOOT 5
EN 6
VCC5 7
SYNC 8
RTCT 9
SGND 10
20 VIN
19 VIN
18 LX
17 LX
16 SS
15 PGND
14 PGOOD
13 REF
12 COMP
11 FB
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2007, 2008. All Rights Reserved
All other trademarks mentioneFdrearee tDheaptarospheertyetofhthttepir:/r/ewspwewcti.vdeaotwansehrse.et4u.com/

1 Page





ISL8540 pdf, ピン配列
ISL8540
Electrical Specifications
Unless otherwise specified the specifications listed in the table are tested at TA = +25°C and guard band for the
full Temperature Range, VIN = 24V, VOUT = 5.0V, IOUT = 0A. Typical values are at TA = +25°C. Parameters
with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
Oscillation Frequency
Max Ramp Amplitude
Modulator Gain
Min OFF Time
fOSC
VIN = 9V to 40V, RT = 100kΩ, CT = 1200pF
VIN = 9V to 40V, RT = 27.4kΩ, CT = 220pF
ΔVOSC VIN = 9V
VVIN/ΔVOSC
60
725
1
9
150 300
kHz
kHz
VP
-
ns
REFERENCE AND SOFT-START
Internal Reference Voltage
Soft-Start Current
Soft-Start Threshold
ERROR AMPLIFIER
VREF
ISS
VSOFT
1.21
8 10 12
1.0
V
µA
V
Transconductance
Gain-Bandwidth Product
gm
GBW
3.9 5.7 7.2
ms
15 MHz
Slew Rate
SR
6 V/µs
COMP Pin Drive
Internal Feedback Voltage
Internal Feedback Bias Current
OVERCURRENT PROTECTION
ICOMP
VFB
IFB
TA = -40°C to +85°C, VIN = 9.0V to 40V
TA = -40°C to +85°C, VFB = 1.20V
1.194
±200
1.210
±50
1.222
±100
µA
V
nA
Dynamic Current Limit ON Time
tOCON
16 Clock
pulses
Dynamic Current Limit OFF Time
Switch Current Limit
POWER-GOOD (OPEN DRAIN)
tOCOFF
ILIMIT
TA = +25°C
4 SS cycle
3.2 4.0 4.8
A
Power-Good Lower Threshold
PGOOD Leakage Current
PGOOD Voltage Low
MOSFET
VPG-
VPG+
IPGLKG
Fraction of the VOUT set point; ~3µs noise filter
Fraction of the VOUT set point; ~3µs noise filter
VPULLUP = 5.5V
IPGOOD = 4mA
85
111
89 %
115 %
1 µA
0.5 V
Switch ON-Resistance
rDS(ON)
IOUT = 2A, VBOOT = VIN + 5.0V, Tested at wafer
level
0.19 0.355
Ω
EN
Input HIGH Level (Asserted)
VINHIGH
2.6 V
Input LOW Level (Unasserted)
VINLOW
1.2 V
Input Current HIGH
Input Current LOW
SYNC
IENHIGH
IENLOW
VIN = 24V
VIN = 24V
25 µA
25 µA
Input HIGH Level (Asserted)
VINHIGH
2.6 V
Input LOW Level (Unasserted)
VINLOW
1.2 V
Input Current HIGH
Input Current LOW
ISYNCHIGH
ISYNCLOW
0.2 µA
0.2 µA
3 FN6495.5
September 9, 2008


3Pages


ISL8540 電子部品, 半導体
ISL8540
VIN 9V TO 40V
C9 + C4
150µF 0.1µF
PGND
VIN
R1
20k
C3
1µF C1
470pF
VIN VIN
VIN VIN
LX LX
LX LX
BOOT ISL8540
EN PGND
VCC5
PGOOD
SYNC
REF
RTCT
COMP
SGND
SS
FB
C5
0.1µF
C1
0.1µF
C10
100pF
R4
301k
L1
15µH
D1
B260
C8
470µF
+
R2
51.1k
R5
C11 100k
1µF
VCC5
OUTPUT
5V
C7
100pF
R6
5.62k
C6
390pF
R3
16.2k
FIGURE 2. TYPICAL SCHEMATIC FOR ISL8540 (5V VOUT)
VIN 18V TO 40V
PGND
C9 + C4
150µF 0.1µF
VIN
R1
20k
C3
1µF C1
470pF
VIN
VIN
LX
LX
BOOT
EN
VCC5
SYNC
RTCT
SGND
VIN
VIN
ISL8540
LX
LX
PGND
PGOOD
REF
COMP
FB
SS
C5
0.1µF
C1
0.1µF
L1
22µH
D1
B260
C8 +
470µF R2
51.1k
C10
100pF
R5
C11 100k
1µF
VCC5
OUTPUT
12V
C7
330pF
R6
5.62k
R4 C6
390k 820pF
R3
5.62k
FIGURE 3. TYPICAL SCHEMATIC FOR ISL8540 (12V VOUT)
6 FN6495.5
September 9, 2008

6 Page



ページ 合計 : 16 ページ
 
PDF
ダウンロード
[ ISL8540 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
ISL8540

DC/DC Power Switching Regulator

Intersil Corporation
Intersil Corporation
ISL85402

2.5A Regulator

Intersil Corporation
Intersil Corporation
ISL85403

2.5A Regulator

Intersil Corporation
Intersil Corporation
ISL85410

1A Synchronous Buck Regulator

Intersil
Intersil


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap