ISL89411 INTERSIL [Intersil Corporation], ISL89411 Datasheet - Page 27

• Manufacturer Part Number: ISL89411
• Description: Intersil Power Management Solutions
• Manufacturer: INTERSIL [Intersil Corporation]

PMIC
Intersil is taking its years of experience in power management to the next level with the introduction of our first product
of Mini PMICs. The compact ISL9305 provides all the fundamental features needed to efficiently power a handheld
device. Incorporated into the ISL9305 are high efficiency, high switching frequency step-down converters to power system
processors; two high current LDOs to power memory, I/Os and other periphery; an I
and voltage slewing; and the Power Good pin ensures system stability.
PMIC
ISL9305
ISL9305H
ISL9307
powered from different sources.
Device
Low Input Voltage Operation
Compact Power Management IC
Reduces Complexity,
Component Count, and Cost While
Saving Space
Separate Input Power Pins
Guarantees operation in low
Allows the regulators to be
Four Regulators with Integrated FETs Into One Package
System Reset Power
3MHz Dual Step-Down Converters and Dual Low-Input LDOs
with I2C Compatible Interface
3MHz Dual 1.5A Step-Down Converters and Dual Low-Input
LDOs with I2C Compatible Interface
3MHz Dual 1500mA Step-Down Converters and Dual Low-Input
LDOs
Protects system until
battery conditions.
DCDC rails are in
regulation.
Good Pin
Device Description
2.5V(min)
1.5V(min)
SCLK
SDAT
VIND2
VIND1
VINL2
VINL1
PG
outputs
Power
Good
I2C
# of
4
4
4
ISL9305
I
•
•
•
2
C Interface Control
Frequency
Switching
(kHz)
3000
3000
3400
Output Voltage selection on all 4 channels
Programmable Power-Up/Down Sequencing
PFM Ultrasonic Mode Selection
- 50mV steps for buck regulators
- 100mV steps for LDOs
Intersil Power Management Solutions  2012  www.intersil.com
Low VIN
Low VIN
3MHz
3MHz
Sync
Buck
Sync
Buck
LDO
LDO
(min)
V
(V)
2.3
2.5
2.5
IN
(max)
V
(V)
5.5
5.5
5.5
IN
SW1
LDO1
FB1
SW2
FB2
LDO2
1.5 (Dual)
+ two .3A
(max)
I
LDOs
OUT1
(A)
0.8
1.5
2
C interface to control SMPS operation
V
(min)
(V)
0.8
0.8
0.6
OUT
Multiple Output : ISL9305
V
(max)
VIN
VIN
OUT1
(V)
3.3
Tying DCDC output to input
of an LDO achieves high
efficiency and good PSRR.
Dual 800mA SMPS
High Fsw allows for the
use of small external
components.
Dual 300mA LDOs
Output
Linear
Y
Y
Y
Capable
DDR
N
N
N
16 Ld TQFN
16 Ld TQFN
16 Ld TQFN
Package
27