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ISL9104IRUAZ-T

Description
Switching Voltage Regulators 500MA LW IQ 4 3MHZ HI EFF SYNCH BUCK
Categorysemiconductor    Power management   
File Size722KB,14 Pages
ManufacturerRenesas Electronics Corporation
Websitehttps://www.renesas.com/
Environmental Compliance
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ISL9104IRUAZ-T Overview

Switching Voltage Regulators 500MA LW IQ 4 3MHZ HI EFF SYNCH BUCK

ISL9104IRUAZ-T Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerRenesas Electronics Corporation
Product CategorySwitching Voltage Regulators
RoHSDetails
Mounting StyleSMD/SMT
Package / CaseUTDFN-6
Output Voltage0.8 V to 6 V
Output Current500 mA
Number of Outputs1 Output
Input Voltage MAX6 V
TopologyBuck
Input Voltage MIN2.7 V
Switching Frequency4300 kHz
Minimum Operating Temperature- 40 C
Maximum Operating Temperature+ 85 C
Height0.5 mm
Length1.6 mm
TypeVoltage Converter
Width1.6 mm
Load Regulation0.0009 %/mA
Factory Pack Quantity3000
Unit Weight0.000183 oz
DATASHEET
ISL9104, ISL9104A
500mA 4.3MHz Low I
Q
High Efficiency Synchronous Buck Converter
The ISL9104, ISL9104A is a 500mA, 4.3MHz step-down
regulator, which is ideal for powering low-voltage
microprocessors in compact 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 6V
allowing the use of a single Li+ cell, three NiMH cells or a
regulated 5V input. It has guaranteed minimum output current
of 500mA. A high switching frequency of 4.3MHz pulse-width
modulation (PWM) allows using small external components.
Under light load condition, the device operates at low I
Q
skip
mode with typical 20µA quiescent current for highest light
load efficiency to maximize battery life, and it automatically
switches to fixed frequency PWM mode under heavy load
condition.
The ISL9104, ISL9104A includes a pair of low ON-resistance
P-Channel and N-Channel internal MOSFETs to maximize
system efficiency and minimize the external component count.
100% duty-cycle operation allows less than 300mV dropout
voltage at 500mA.
The ISL9104, ISL9104A offers internal digital soft-start,
enable for power sequence, overcurrent protection and
thermal shutdown functions. In addition, the ISL9104,
ISL9104A offers a quick bleeding function that discharges the
output capacitor when the IC is disabled.
The ISL9104, ISL9104A is offered in a 1.6x1.6mm µTDFN
package. The complete converter occupies less than 0.5CM
2
.
FN6829
Rev 5.00
Features
• High Efficiency Integrated Synchronous Buck Regulator with
up to 93% Efficiency
• 2.7V to 6.0V Supply Voltage
• 4.3MHz PWM Switching Frequency
• 500mA Guaranteed Output Current
• 3% Output Accuracy Over-Temperature and Line for Fixed
Output Options
• 20µA Quiescent Supply Current in Skip Mode
• Less than 1µA Logic Controlled Shutdown Current
• 100% Maximum Duty Cycle for Lowest Dropout
• Ultrasonic Switching Frequency at Skip Mode to Prevent
Audible Frequency Noise (For ISL9104A Only)
• Discharge Output Capacitor when Disabled
• Internal Digital Soft-Start
• Peak Current Limiting, Short Circuit Protection
• Over-Temperature Protection
• Chip Enable
• Small 6 Pin 1.6mmx1.6mm µTDFN Package
• Pb-Free (RoHS Compliant)
Applications
• Single Li-ion Battery-Powered Equipment
• Mobile Phones and MP3 Players
• PDAs and Palmtops
• WCDMA Handsets
• Portable Instruments
Related Literature
• See
AN1522,
“ISL9104xxxxEVAL1Z, ISL9104AxxxxEVAL1Z
Evaluation Board Application Manual”
Pin Configuration
EFFICIENCY (%)
100
95
90
85
80
75
70
65
60
55
50
1
10
I
OUT
(mA)
100
V
IN
= 2.7V
V
OUT
= 1.8V
L = 1µH
1000
ISL9104, ISL9104A
(6 LD 1.6x1.6 µTDFN)
TOP VIEW
VIN 1
EN 2
NC 3
6 SW
5 GND
4 FB
FIGURE 1. EFFICIENCY vs OUTPUT CURRENT
FN6829 Rev 5.00
Page 1 of 14
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