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ISL9307IRTAANFZ-T7A Datasheet(PDF) 1 Page - Intersil Corporation

Part # ISL9307IRTAANFZ-T7A
Description  3MHz Dual 1500mA Step-Down Converters and Dual Low-Input LDOs
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Manufacturer  INTERSIL [Intersil Corporation]
Direct Link  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL9307IRTAANFZ-T7A Datasheet(HTML) 1 Page - Intersil Corporation

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3MHz Dual 1500mA Step-Down Converters and Dual
Low-Input LDOs
ISL9307
The ISL9307 is an integrated mini Power Management IC
(mini-PMIC) ideal for applications for powering low-voltage
microprocessor or multiple voltage rails with a battery as an
input source, such as a single Li-ion or Li-polymer. ISL9307
integrates two high-efficiency, 3MHz, synchronous step-down
converters (DCD1 and DCD2) and two low-input, low-dropout
linear regulators (LDO1 and LDO2).
The 3MHz PWM switching frequency allows the use of very
small external inductors and capacitors. Both step-down
converters can enter skip mode under light load conditions to
further improve efficiency and maximize battery life.
The ISL9307 features EN pins for each channel, thus allowing
startup delay for power sequencing.
The ISL9307 also provides two 300mA low-dropout (LDO)
regulators. The input voltage range is 1.5V to 5.5V, which
allows them to be powered from one of the on-chip step-down
converters or directly from a battery. The default LDO power-up
output comes with factory pre-set fixed output voltage options
between 0.9V and 3.3V.
The ISL9307 is available in a 4mmx4mm 16 Ld TQFN.
Features
• Dual 1500mA, Synchronous Step-down Converters and Dual
300mA, General-purpose LDOs
• Input Voltage Range
- DCD1/DCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
- VINLDO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 5.5V
• Adjustable Output Voltage
- VODCD1/VODCD2 . . . . . . . . . . . . . . . . . . . . . . . . 0.8V to VIN
•50μA IQ (Typ) with DCD1/DCD2 in Skip Mode; 20μA IQ (Typ)
for each Enabled LDO
• EN Pins for DCD1/DCD2 and LDO1/LDO2
• Small, Thin, 4mmx4mm TQFN
Applications
• Cellular Phones, Smart Phones
• PDAs, Portable Media Players, Portable Instruments
• Single Li-ion/Li-polymer Battery-Powered Equipment
•DSP Core Power
FIGURE 1. TYPICAL APPLICATION DIAGRAM
ISL9307
L1 = 1.5µH
2.5V TO 5.5V
1500m A
1500m A
1.5V TO 5.5V
300m A
300m A
R1
R2
R3
R4
1µF
C2
L2 = 1.5µH
C4
10µF
C5
10µF
C6
1µF
C7
1µF
ENDCD1
VINDCD1
VINLDO
VINDCD2
ENDCD2
ENLDO 1
ENLDO 2
GNDDCD1
GNDDCD2
GNDLDO
C1
10µF
VOLDO2
SW 1
FB1
SW 2
FB2
VOLDO 1
NOTE: ONLY FOR ADJUSTABLE OUTPUT VERSION . FOR FIXED
OUTPUT VERSION , DIRECTLY CONNECT THE FB PIN TO THE
OUTPUT OF THE BUCK CONVERTER .
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Copyright Intersil Americas Inc. 2012. 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.
September 20, 2012
FN7931.3


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