ISL8540IVEZ Intersil, ISL8540IVEZ Datasheet

IC REG 2A DC/DC STEP-DN 20HTSSOP

ISL8540IVEZ

Manufacturer Part Number
ISL8540IVEZ
Description
IC REG 2A DC/DC STEP-DN 20HTSSOP
Manufacturer
Intersil
Type
Step-Down (Buck)r
Datasheet

Specifications of ISL8540IVEZ

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
1.21 ~ 35 V
Current - Output
2A
Frequency - Switching
100kHz ~ 600kHz
Voltage - Input
9 ~ 40 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
Power - Output
3W
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL8540IVEZ
Manufacturer:
Intersil
Quantity:
74
Company:
Part Number:
ISL8540IVEZ
Quantity:
10
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 r
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
ISL8540IVEZ
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.
NUMBER
(Note)
PART
DS(ON)
of 0.19Ω to obtain very high efficiency and
ISL85 40IVEZ -40 to +85 20 Ld HTSSOP MDP0048
MARKING
PART
®
1
RANGE
TEMP.
(°C)
Data Sheet
PACKAGE
(Pb-Free)
1-888-INTERSIL or 1-888-468-3774
DWG. #
PKG.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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
Pinout
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
September 9, 2008
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
SGND
BOOT
Copyright Intersil Americas Inc. 2007, 2008. All Rights Reserved
SYNC
VCC5
RTCT
VIN
VIN
EN
LX
LX
10
(20 LD HTSSOP)
1
2
3
4
5
6
7
8
9
TOP VIEW
ISL8540
20
19
18
17
16
15
14
13
12
11
VIN
VIN
LX
LX
SS
PGND
PGOOD
REF
COMP
FB
ISL8540
FN6495.5

Related parts for ISL8540IVEZ

ISL8540IVEZ Summary of contents

Page 1

... MARKING (°C) ISL8540IVEZ ISL85 40IVEZ - HTSSOP MDP0048 ISL8540IVEZ-T* ISL85 40IVEZ - 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) ...

Page 2

... Thermal Resistance (Typical, Notes 1, 2) θ HTSSOP Package . . . . . . . . . . . . . . . . Maximum Power Dissipation Maximum Junction Temperature (Hermetic Package or Die +150°C Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 24V 5.0V OUT OUT SYMBOL ...

Page 3

Electrical Specifications Unless otherwise specified the specifications listed in the table are tested at T full Temperature Range, V with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not ...

Page 4

Electrical Specifications Unless otherwise specified the specifications listed in the table are tested at T full Temperature Range, V with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not ...

Page 5

REF SS SO FT- START + EN BANDG AP + 1.21V FB 3pF 1.6k +14 -14% 5 ISL8540 RTCT RAM EAM OVFLT UVFLT ...

Page 6

VIN VIN 9V TO 40V VIN + 150µF 0.1µF LX PGND BOOT EN VIN VCC5 R1 20k SYNC C3 C1 1µF RTCT 470pF SGND FIGURE 2. TYPICAL SCHEMATIC FOR ISL8540 (5V V VIN VIN 18V TO 40V ...

Page 7

Typical Performance Curves 100 2.5V V 3.3V V OUT 1.8V V OUT 0.0 0.5 1.0 OUTPUT LOAD (A) FIGURE 4. EFFICIENCY vs LOAD (12V INPUT - 500kHz) 100 24V V OUT 90 ...

Page 8

Typical Performance Curves 24.4 24.3 24.2 24.1 24.0 23.9 23.8 0.0 0.5 1.0 OUTPUT LOAD (A) FIGURE 10. V REGULATION vs LOAD OUT (V = 24V - 500kHz) OUT 5.10 5.05 5. OUT OUT 4.95 I ...

Page 9

Typical Performance Curves 3.0 2.5 2.0 1.5 1.0 0.5 12V V IN 0.0 0.0 0.5 1.0 OUTPUT LOAD (A) FIGURE 16. POWER DISSIPATION vs LOAD ( 500kHz) OUT 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.5 ...

Page 10

Typical Performance Curves FIGURE 22. SOFT-START AT NO LOAD FIGURE 24. SOFT-START AT FULL LOAD 10 ISL8540 Circuit of Figure 24V 0V 500KHz Typical values are +25°C. (Continued) ...

Page 11

Applications Information Product Description The ISL8540 is a non-synchronous, integrated FET 2A step down regulator which operates from an unregulated input 40V. The output voltage is user-adjustable with a pair of external resistors. Frequency of operation is ...

Page 12

Undervoltage Protection If the voltage detected on the FB pin falls 14% below the internal reference voltage and the overcurrent condition flag is LOW, then the regulator will be shut down immediately under an undervoltage fault condition. An undervoltage fault ...

Page 13

The ESL of the capacitors, which is an important parameter in Equations 4 and 5, is not usually listed in databooks. Practically, it can be approximated if an impedance vs frequency curve is given for a specific capacitor (C): 1 ...

Page 14

DRIVER OSC PWM COMPARATOR - DRIVER ΔV + OSC E REFERENCE ERROR AMP DETAILED COMPENSATION COMPONENTS COMP ISL8540 REFERENCE ⎛ × ...

Page 15

... The switching components should be placed close to the ISL8540 first. Minimize the length of the connections between the input capacitors, C output capacitors as short as possible. NOTE recommended that any applications with input voltage greater than 30VDC should be polymer coated to meet Intersil’s IPC-2221 creepage and clearance specification ...

Page 16

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Related keywords