isl9105 Intersil Corporation, isl9105 Datasheet
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isl9105
Manufacturer Part Number
isl9105
Description
600ma Low Quiescent Current 1.6mhz High Efficiency Synchronous Buck Regulator
Manufacturer
Intersil Corporation
Datasheet
1.ISL9105.pdf
(11 pages)
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Part Number
Manufacturer
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Company:
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 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 using 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(to be updated)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are 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.
ISL9105IRZ-T
PART NUMBER
(NOTE)
MARKING
2
PART
05Z
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 2x3mm DFN
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Single Li-Ion Battery-Powered Equipment
• DSP Core Power
• PDAs and Palmtops
Pinout
95% Efficiency
February 13, 2007
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. 2006-2007. All Rights Reserved
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(8 LD DFN)
TOP VIEW
ISL9105
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PHASE
GND
FB
RSI
ISL9105
FN6415.1