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ISL9103IRUAZ-T

P1-P3P4-P6P7-P9P10-P12P13-P14
1
FN6828.3
ISL9103, ISL9103A
500mA 2.4MHz Low I
Q
High Efficiency
Synchronous Buck Converter
The ISL9103, ISL9103A is a 500mA, 2.4MHz 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
2.4MHz 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 ISL9103, ISL9103A 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 ISL9103, ISL9103A offers internal digital soft-start,
enable for power sequence, overcurrent protection and
thermal shutdown functions. In addition, the ISL9103,
ISL9103A offers a quick bleeding function that discharges
the output capacitor when the IC is disabled.
The ISL9103, ISL9103A is offered in a 1.6x1.6mm UTDFN
package. The complete converter occupies less than
0.5cm
2
.
Pinout
ISL9103, ISL9103A
(6 LD 1.6x1.6 UTDFN)
TOP VIEW
Features
• High Efficiency Integrated Synchronous Buck Regulator
with up to 95% Efficiency
• 2.7V to 6.0V Supply Voltage
• 2.4MHz 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 ISL9103A 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 UTDFN Package
• Pb-Free (RoHS Compliant)
Applications
• Single Li-ion Battery-Powered Equipment
• Mobile Phones and MP3 Players
• PDAs and Palmtops
• WCDMA Handsets
• Portable Instruments
1
2
3
6
4
5
VIN
EN
NC
SW
GND
FB
Data Sheet December 9, 2015
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC
2009, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
2
FN6828.3
December 9, 2015
Pin Descriptions
PIN NUMBER PIN NAME DESCRIPTION
1VIN
Input supply voltage. Typically connect a 10µF ceramic capacitor to ground.
2EN
Regulator enable pin. Enable the device when driven to high. Shut down the chip and
discharge output capacitor when driven to low. Do not leave this pin floating.
3NC
No connect; leave floating.
4FB
Buck converter output feedback pin. For adjustable output version, its typical value is
0.8V and connect it to the output through a resistor divider for desired output voltage;
for fixed output version, directly connect this pin to the converter output.
5GND
Ground connection.
6SW
Switching node connection. Connect to one terminal of inductor.
Ordering Information
PART NUMBER
(Notes 1, 3, 4)
PART
MARKING
OUTPUT
VOLTAGE (V)
(Note 2)
TEMP
RANGE
(°C)
PACKAGE
Tape and Reel
(RoHS Compliant)
PKG
DWG. #
ULTRASONIC
FUNCTION
ISL9103IRUJZ-T
(No longer available, recommended
replacement:ISL9103AIRUJZ-T)
J1 2.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUFZ-T
(No longer available, recommended replacement:
ISL9103AIRUFZ-T)
J2 2.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUDZ-T
(No longer available, recommended replacement:
ISL9103AIRUDZ-T)
J3 2.0 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUCZ-T
(No longer available, recommended replacement:
ISL9103AIRUCZ-T)
J4 1.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUBZ-T
(No longer available, recommended replacement:
ISL9103AIRUBZ-T)
J5 1.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUWZ-T
(No longer available, recommended replacement:
ISL9103AIRUWZ-T)
J6 1.2 -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103IRUAZ-T
(No longer available, recommended replacement:
ISL9103AIRUAZ-T)
J7 ADJ -40 to +85 6 Ld UTDFN L6.1.6x1.6 NO
ISL9103AIRUJZ-T J9 2.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUFZ-T K0 2.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUDZ-T K1 2.0 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUCZ-T K2 1.8 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUBZ-T K3 1.5 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUWZ-T K4 1.2 -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
ISL9103AIRUAZ-T K5 ADJ -40 to +85 6 Ld UTDFN L6.1.6x1.6 YES
NOTES:
1. Please refer to TB347
for details on reel specifications.
2. Other output voltage options may be available upon request, please contact Intersil for more details.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu
plate - e4 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.
4. For Moisture Sensitivity Level (MSL), please see device information page for ISL9103, ISL9103A
. For more information on MSL please see
techbrief TB363
.
ISL9103, ISL9103A
3
FN6828.3
December 9, 2015
Absolute Maximum Ratings Thermal Information
VIN, EN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V
SW to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -1.5V to 6.5V
FB to GND (for adjustable version) . . . . . . . . . . . . . . . -0.3V to 2.7V
FB to GND (for fixed output version) . . . . . . . . . . . . . . -0.3V to 3.6V
Recommended Operating Conditions
VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . 2.7V to 6.0V
Load Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .up to 500mA
Ambient Temperature Range. . . . . . . . . . . . . . . . . . .-40°C to +85°C
Thermal Resistance (Typical, Note 5)
JA
(°C/W)
6 Ld 1.6x1.6 UTDFN Package . . . . . . . . . . . . . . . . . 160
Junction Temperature Range. . . . . . . . . . . . . . . . . .-40°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
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTE:
5.
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
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: T
A
= +25°C, V
IN
= V
EN
= 3.6V, L = 2.2µH,
C
1
= 10µF, C
2
= 10µF, I
OUT
= 0A (see “Typical Applications” on page 8). Boldface limits apply over the
operating temperature range, -40°C to +85°C.
PARAMETER SYMBOL TEST CONDITIONS
MIN
(Note6) TYP
MAX
(Note 6) UNITS
SUPPLY
Undervoltage Lockout Threshold (UVLO) V
UVLO
T
A
= +25°C, Rising - 2.5 2.7 V
UVLO Hysteresis 50 150 - mV
Quiescent Supply Current (for ISL9103
Adjustable Output Voltage Only)
I
VIN1
In skip mode, no load at the output, no switch,
V
IN
= 6.0V
-2034 µA
Quiescent Supply Current (for ISL9103A
Adjustable Output Only)
I
VIN2
In skip mode, no load at the output, no switch,
V
IN
= 6.0V
-3245 µA
Shut Down Supply Current I
SD
V
IN
= 6.0V, EN = LOW - 0.05 1 A
OUTPUT REGULATION
FB Voltage Accuracy (for Adjustable Output
Only)
T
A
= 0°C to +85°C -2 - +2 %
-2.5 - +2.5 %
FB Voltage V
FB
0.8 V
FB Bias Current (for Adjustable Output Only) I
FB
VFB = 0.75V - 5 100 nA
Output Voltage Accuracy (for Fixed Output
Voltage Only)
PWM Mode
-3 - 3 %
Line Regulation V
IN
= V
O
+ 0.5V to 6V (minimal 2.7V) - 0.2 - %/V
Load Regulation V
IN
= 3.6V, I
O
= 150mA to 500mA - 0.0009 - %/mA
SW
P-Channel MOSFET ON-Resistance V
IN
= 3.6V, I
O
= 200mA - 0.45 0.6
V
IN
= 2.7V, I
O
= 200mA - 0.55 0.72
N-Channel MOSFET ON-Resistance V
IN
= 3.6V, I
O
= 200mA - 0.4 0.52
V
IN
= 2.7V, I
O
= 200mA - 0.5 0.65
N-Channel Bleeding MOSFET
ON-Resistance
- 100 -
P-Channel MOSFET Peak Current Limit I
PK
V
IN
= 4.2V 0.7 0.95 1.30 A
Maximum Duty Cycle - 100 - %
SW Leakage Current SW at Hi-Z state - 0.01 2 µA
PWM Switching Frequency f
S
V
IN
= 3.6V 1.9 2.4 2.75 MHz
ISL9103, ISL9103A
P1-P3P4-P6P7-P9P10-P12P13-P14

ISL9103IRUAZ-T

Mfr. #:
Buy ISL9103IRUAZ-T
Manufacturer:
Renesas / Intersil
Description:
Switching Voltage Regulators 500MA LW IQ 2.4MHZ HI EFF SYNC BUCK REG
Lifecycle:
New from this manufacturer.
Delivery:
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