ISL9105IRZ-T Intersil, ISL9105IRZ-T Datasheet

IC REG SYNC BUCK 600MA 8-DFN

ISL9105IRZ-T

Manufacturer Part Number
ISL9105IRZ-T
Description
IC REG SYNC BUCK 600MA 8-DFN
Manufacturer
Intersil
Type
Step-Down (Buck)r
Datasheet

Specifications of ISL9105IRZ-T

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.8 ~ 5.5 V
Current - Output
600mA
Frequency - Switching
1.6MHz
Voltage - Input
2.7 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-DFN
Rohs Compliant
YES
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Other names
ISL9105IRZ-T

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL9105IRZ-T
Manufacturer:
Intersil
Quantity:
291
600mA Low Quiescent Current 1.6MHz
High Efficiency Synchronous Buck
Regulator
ISL9105 is a 600mA, 1.6MHz step-down regulator that is
ideal for powering low-voltage microprocessors in handheld
devices such as PDAs and cellular phones. It is optimized
for generating low output voltages down to 0.8V. The supply
voltage range is from 2.7V to 5.5V, allowing for the use of a
single Li+ cell, three NiMH cells or a regulated 5V input. It
has a guaranteed minimum output current of 600mA.
1.6MHz pulse-width modulation (PWM) switching frequency
allows for use of small external components. It has flexible
operation mode selection of forced PWM mode and low IQ
mode with typical 25µA quiescent current for highest light
load efficiency to maximize battery life.
The ISL9105 includes a pair of low ON-resistance
P-Channel and N-Channel internal MOSFETs to maximize
efficiency and minimize external component count. 100%
duty-cycle operation allows less than 200mV dropout voltage
at 600mA output current.
The ISL9105 offers a typical 216ms Power-On-Reset (POR)
timer at power-up. The timer output can be reset by RSI.
When shutdown, ISL9105 discharges the output capacitor.
Other features include internal digital soft-start, enable for
power sequence, overcurrent protection, and thermal
shutdown.
The ISL9105 is offered in a 2mmx3mm 8 Ld DFN package
with 1mm maximum height. The complete converter
occupies less than 1cm
Ordering Information
ISL9105IRZ-T*
*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.
PART NUMBER
(NOTE)
MARKING
05Z
2
PART
area.
®
1
-40 to +85 8 Ld 2x3 DFN L8.2x3
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
• High Efficiency Synchronous Buck Regulator with up to
• Selectable Forced PWM Mode and SKIP Mode
• 25µA Quiescent Supply Current in SKIP Mode
• 2.7V to 5.5V Supply Voltage
• 216ms POR Timer
• 3% Output Accuracy Over Temperature/Line/Load
• 600mA Guaranteed Output Current
• Less than 1µA Logic Controlled Shutdown Current
• 100% Maximum Duty Cycle for Lowest Dropout
• Discharge Output Capacitor when Shutdown
• Internal Loop Compensation
• Internal Digital Soft-Start
• Peak Current Limit Protection, Short Circuit Protection
• Over-Temperature Protection
• Enable
• Small 8 Ld 2mmx3mm DFN
• Pb-free (RoHS Compliant)
Applications
• Single Li-Ion Battery-Powered Equipment
• DSP Core Power
• PDAs and Palmtops
Pinout
95% Efficiency
March 28, 2008
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
MODE
POR
VIN
EN
Copyright Intersil Americas Inc. 2006-2008. All Rights Reserved
1
2
3
4
(8 LD DFN)
TOP VIEW
ISL9105
8
7
6
5
PHASE
GND
FB
RSI
ISL9105
FN6415.2

Related parts for ISL9105IRZ-T

ISL9105IRZ-T Summary of contents

Page 1

... PART NUMBER PART RANGE (NOTE) MARKING (°C) ISL9105IRZ-T* 05Z - 2x3 DFN L8.2x3 *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 Information Thermal Resistance (Typical, Notes 1, 2) θ 2x3 DFN Package . . . . . . . . . . . . . . Junction Temperature Range .-55°C to +125°C Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 0A (see “TYPICAL APPLICATION DIAGRAM” on page 6). OUT SYMBOL TEST CONDITIONS V ...

Page 3

Electrical Specifications Unless otherwise noted, all parameter limits are guaranteed over the recommended operating conditions and the typical specifications are measured at the following conditions 3.3µ 10µ 10µF, I PARAMETER POR Output ...

Page 4

Typical Operating Performance 100 LOAD CURRENT (mA) FIGURE 1. EFFICIENCY vs LOAD CURRENT (V 1.640 1.640 I_LOAD = 0A 1.635 1.635 ...

Page 5

Typical Operating Performance EN V PHASE V OUT I L FIGURE 7. SOFT-START (PFM 3.6V 10mA (AC COUPLED) OUT V PHASE I L 400mA I OUT 200mA FIGURE 9. LOAD TRANSIENT (PWM, ...

Page 6

Typical Operating Performance Typical Applications INPUT 2.7V TO 5.5V C1 10µF R1 100k VIN PARTS DESCRIPTION MANUFACTURERS L Output inductor Sumida Sumida Coilcraft C1 Input capacitor Murata C2 Output capacitor Murata C3 Panasonic R1 Pull-up resistor Various 6 ISL9105 (Unless ...

Page 7

Block Diagram Soft SOFT START SHUTDOWN EN 0.8V BANDGAP FB REF4 REF3 POR RSI REF5 Theory of Operation The ISL9105 is a step-down switching regulator optimized for battery-powered handheld applications. The regulator operates at 1.6MHz fixed switching frequency under heavy ...

Page 8

The error amplifier is a transconductance amplifier, which converts the voltage error signal to a current output. The voltage loop is internally compensated network. The maximum EAMP voltage output ...

Page 9

RSI Signal The RSI signal is an input signal, which can reset the POR signal. As shown in the “Block Diagram” on page 7, the power-good signal is gated by the RSI signal. When the RSI is high, the POR ...

Page 10

PCB Layout Recommendation The PCB layout is a very important converter design step to make sure the designed converter works well. For ISL9105, the power loop is composed of the output inductor L, the output capacitor C OUT the GND ...

Page 11

... 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 ...

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