ISL8023IRTAJZ Intersil Corporation, ISL8023IRTAJZ Datasheet

ISL8023IRTAJZ

Manufacturer Part Number

ISL8023IRTAJZ

Description

Manufacturer

Intersil Corporation

Datasheets

1.ISL8024IRTAJZ.pdf (19 pages)

2.ISL8023IRTAJZ.pdf (19 pages)

3.ISL8023AIRTAJZ.pdf (20 pages)

Specifications of ISL8023IRTAJZ

Pack_quantity

100

Comm_code

85423990

Lead_time

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL8023IRTAJZ

Manufacturer:

Intersil

Quantity:

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ISL8023IRTAJZ-T7A

Manufacturer:

MURATA

Quantity:

400 000

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3A/4A Low Quiescent Current High Efficiency

Synchronous Buck Regulator

ISL8023, ISL8024

The ISL8023, ISL8024 is a high efficiency, monolithic,

synchronous step-down DC/DC converter that can deliver up to

3A/4A continuous output current from a 2.7V to 5.5V input

supply. It uses current control architecture to deliver very low

duty cycle operation at high frequency with fast transient

response and excellent loop stability.

The ISL8023, ISL8024 integrates a pair of low ON-resistance

P-Channel and N-Channel internal MOSFETs to maximize

efficiency and minimize external component count. The 100%

duty-cycle operation allows less than 200mV dropout voltage

at 4A output current. The operational frequency, pulse-width

modulation (PWM), is adjustable from 500kHz to 4MHz.

Connecting FS pin high sets the default frequency to 1MHz

switching frequency allows the use of small external

components. The ISL8023, ISL8024 can be configured for

discontinuous or forced continuous operation at light load.

Forced continuous operation reduces noise and RF

interference while discontinuous mode provides high

efficiency by reducing switching losses at light loads.

Fault protection is provided by internal hiccup mode current

limiting during short circuit and overcurrent conditions, an

output over voltage comparator and over-temperature monitor

circuit. A power good output voltage monitor indicates when

the output is in regulation.

The ISL8023, ISL8024 offers a 1ms Power-Good (PG) timer at

power-up. When in shutdown, ISL8023, ISL8024 discharges

the output capacitor. Other features include internal fixed or

adjustable soft-start, internal/external compensation, and

thermal shutdown.

The ISL8023, ISL8024 is offered in a space saving in a 16 Ld

3x3 QFN lead free package with exposed pad lead frames for

low thermal with 1mm maximum height. The complete

converter occupies less than 0.22 in

Various fixed output voltage are available upon request. See

ordering information for more detail.

December 22, 2011

FN7812.0

area.

100

FIGURE 1. EFFICIENCY T = +25°C V

0.0

3.3V

0.5

3.3V

OUT

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

OUT

1.0

PWM

1-888-INTERSIL or 1-888-468-3774

PFM

1.5

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

OUT

2.0

Features

• High Efficiency Synchronous Buck Regulator with up to 95%

• 0.8% Reference Accuracy Over-Temperature/Load/Line

• Start-up with Pre-Biased Output

• Internal Soft-Start - 1ms or Adjustable

• Soft-Stop Output Discharge During Disabled

• Adjustable Frequency from 500kHz to 4MHz - default at

• External Synchronization up to 4MHz

• Negative OC protection

• DC/DC POL Modules

• µC/µP, FPGA and DSP Power

• Plug-in DC/DC Modules for Routers and Switchers

• Portable Instruments

• Test and Measurement Systems

• Li-ion Battery Powered Devices

Applications

• DC/DC POL Modules

• µC/uP, FPGA and DSP Power

• Plug-in DC/DC Modules for Routers and Switchers

• Portable Instruments

• Test and Measurement Systems

• Li-ion Battery Powered Devices

Related Literature

See AN1660, “3A/4A Low Quiescent Current High Efficiency

Synchronous Buck Regulator”

(A)

Efficiency

1MHz (8023/24), 2MHz (8023A/24A)

2.5

All other trademarks mentioned are the property of their respective owners.

3.0

= 5V

3.5

4.0

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