ISL9305IRTHWBNLZ-T Intersil, ISL9305IRTHWBNLZ-T Datasheet

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ISL9305IRTHWBNLZ-T

Manufacturer Part Number
ISL9305IRTHWBNLZ-T
Description
IC PMIC 800MA 3MHZ 16TQFN
Manufacturer
Intersil
Datasheet

Specifications of ISL9305IRTHWBNLZ-T

Topology
Step-Down (Buck) (2), Linear (LDO) (2)
Function
Any Function
Number Of Outputs
4
Frequency - Switching
3MHz
Voltage/current - Output 1
0.8 V ~ 5.5 V, 800mA
Voltage/current - Output 2
0.8 V ~ 5.5 V, 800mA
Voltage/current - Output 3
0.9 V ~ 3.3 V, 350mA
W/led Driver
No
W/supervisor
No
W/sequencer
No
Voltage - Supply
1.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
*
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3MHz Dual 1.5A Step-Down Converters and Dual
Low-Input LDOs with I
ISL9305H
ISL9305H is an integrated mini Power Management IC (mini-
PMIC) for powering low-voltage microprocessor, or applications
using a single Li-Ion or Li-Polymer cell battery to power multiple
voltage rails. ISL9305H 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 the efficiency and maximize the battery life.
For noise sensitive applications, they can also be programmed
through I
regardless of the load current condition. The I
supports on-the-fly slew rate control of the output voltage from
0.825V to 3.6V at 25mV/step size for dynamic power saving.
Each step-down converter can supply up to 1.5A load current.
The default output voltage can be set from 0.8V to VIN using
external feedback resistors on the adjustable version, or the
ISL9305H can be ordered in factory pre-set power-up default
voltages in increments of 100mV from 0.9V to 3.6V.
ISL9305H also provides two 300mA low dropout (LDO)
regulators. The input voltage range is 1.5V to 5.5V allowing them
to be powered from one of the on-chip step-down converters or
directly from the battery. The default LDO output comes with
factory pre-set fixed output voltage options between 0.9V to 3.3V.
ISL9305H is available in a 4mmx4mm 16 Ld TQFN package.
Related Literature
• FN7605, ISL9305 Data Sheet
November 8, 2010
FN7724.0
AN1564
Evaluation Boards”
2
C interface to operate in forced PWM mode
“ISL9305IRTZEVAL1Z and ISL9305HIRTZEVAL1Z
2.5V TO 5.5V
1.5V TO 5.5V
1.5V TO 5.5V
1
*ONLY FOR ADJUSTABLE OUTPUT VERSION. FOR FIXED OUTPUT VERSION, DIRECTLY
CONNECT THE FB PIN TO THE OUTPUT OF THE BUCK CONVERTER.
10µF
C
10
C
1µF
C
1µF
2
3
2
FIGURE 1. TYPICAL APPLICATION DIAGRAM
C interface
2
VINDCD1
VINDCD2
SDAT
SCLK
VINLDO1
VINLDO2
GNDDCD1
C Compatible Interface
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
ISL9305H
GNDDCD2
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
PG
Features
• Dual 1.5A, Synchronous Step-down Converters and Dual
• Input Voltage Range
• 400kb/s I
• Adjustable Output Voltage
• At 25mV/Step . . . . . . . . . . . . . . . . . . . . . . . . . . 0.825V to 3.6V
• LDO1/LDO2 Output Voltage I
• 50μA I
• On-the-fly I
• DCD1/DCD2 I
• Small, Thin 4mmx4mm TQFN Package
Applications
• Cellular Phones, Smart Phones
• PDAs, Portable Media Players, Portable Instruments
• Single Li-Ion/Li-Polymer Battery-Powered Equipment
• DSP Core Power
GNDLDO
VOLDO1
VOLDO2
300mA, General-purpose LDOs
- DCD1/DCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V
- LDO1/LDO2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to 5.5V
Between the Host Controller and the ISL9305H
- DCD1/DCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8V to V
- Fixed Output I
- At 50mV/Step . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9V to 3.3V
for Each Enabled LDO
Voltages
Load or Forced Fixed Switching Frequency PWM Mode
SW1
SW2
All other trademarks mentioned are the property of their respective owners.
FB1
FB2
Q
(Typ) with DCD1/DCD2 in Skip Mode; 20μA I
2
L
L
2
C-Bus Series Interface Transfers the Control Data
1
2
C Programming of DC/DC and LDO Output
= 1.5µH
= 1.5µH
2
C Programmable Skip Mode Under Light
|
2
Copyright Intersil Americas Inc. 2010. All Rights Reserved
1µF
C Programmability
C
R
R
6
3
1
R
R
4
2
2
*
*
C
1µF
C Programmability
7
C
10µF
C
10µF
1.5A
1.5A
300mA
300mA
4
5
Q
(Typ)
IN

Related parts for ISL9305IRTHWBNLZ-T

ISL9305IRTHWBNLZ-T Summary of contents

Page 1

... FIGURE 1. TYPICAL APPLICATION DIAGRAM CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. 2 C-Bus Series Interface Transfers the Control Data ...

Page 2

PARTS DESCRIPTION MANUFACTURER L1, L2 Inductor Sumida C1 Input capacitor Murata C2, C3 Intput capacitor Murata C4, C5 Output capacitor Murata C6, C7 Output capacitor Murata R1, R2, Resistor Various R3, R4 Pin Configuration Pin Descriptions PIN NUMBER (TQFN) NAME ...

Page 3

Pin Descriptions (Continued) PIN NUMBER (TQFN) NAME 11 FB2 Feedback pin for DCD2, connect external voltage divider resistors between DCD2 output, this pin and ground. For fixed output versions, connect this pin directly to the DCD2 output. 12 VINDCD2 Input ...

Page 4

... Ordering Information PART NUMBER PART (Notes MARKING ISL9305IRTHAANLZ-T 9305I HAANLZ ISL9305IRTHWBNLZ-T 9305I HWBNLZ ISL9305IRTHWCLBZ-T 9305I HWCLBZ ISL9305IRTHWCNYZ-T 9305I HWCNYZ ISL9305IRTHWCNLZ-T 9305I HWCNLZ ISL9305IRTHWLNCZ-T 9305I HWLNCZ ISL9305IRTHBCNLZ-T 9305I HBCNLZ ISL9305IRTHBFNCZ-T 9305I HBFNCZ NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...

Page 5

... Maximum Junction Temperature Range . . . . . . . . . . . . . .-40°C to +150°C Recommended Junction Temperature Range . . . . . . . . .-40°C to +125°C Storage Temperature Range .-40°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions VINDCD1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to 5.5V VINDCD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5V to VINDCD1 VINLDO1 and VINLDO2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V to VINDCD1 DCD1 and DCD2 Output Current ...

Page 6

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 LDO1 and LDO2, VINLDOx = VOLDOx + 0.5V to 5.5V with VINLDOx always no ...

Page 7

Theory of Operation DCD1 and DCD2 Introduction Both the DCD1 and DCD2 converters on ISL9305H use the peak-current-mode pulse-width modulation (PWM) control scheme for fast transient response and pulse-by-pulse current limiting. Both converters are able to supply up to 1.5A ...

Page 8

Undervoltage Lockout (UVLO) An undervoltage lockout (UVLO) circuit is provided on ISL9305H. The UVLO circuit block can prevent abnormal operation in the event that the supply voltage is too low to guarantee proper operation. The UVLO on VINDCD1 is set ...

Page 9

S SLAVE ADDRESS 0 A REGISTER ADDRESS R/W OPTIONAL DATA BYTE 2 A AUTO INCREMENT REGISTER ADDRESS S SLAVE ADDRESS 0 A REGISTER ADDRESS R/W DATA BYTE 1 A DATA BYTE 2 AUTO INCREMENT REGISTER ADDRESS FIGURE ...

Page 10

I C Control Registers All the registers are reset at initial start-up. DCD OUTPUT VOLTAGE CONTROL REGISTER DCD1OUT, address 0x00h; DCD2OUT, address 0x01h Caution: Disable DCD prior to changing from fixed output voltage to adjustable output voltage or from ...

Page 11

LDO1 AND LDO2 OUTPUT VOLTAGE CONTROL REGISTERS LDO1OUT, address 0x02h and LDO2OUT, address 0x03h. LDOOUT LDO OUTPUT <7:0> VOLTAGE (V) 00 0.9 01 0.95 02 1.00 03 1.05 04 1.1 05 1.15 06 1.20 07 1.25 08 1.30 09 1.35 ...

Page 12

DCD1 AND DCD2 CONTROL REGISTER DCD_PARAMETER, address 0x04h TABLE 6. DCD_PARAMETER REGISTER BIT NAME ACCESS RESET DCD_PHASE R/W 0 DCD1 and DCD2 PWM switch selection. 0-in phase 180° out-of-phase. B5 DCD2_ULTRA R/W 0 ...

Page 13

Typical Operating Conditions FIGURE 8. DCD OUTPUT RIPPLE (V = 4.2V, PFM, TIME SCALE = 1µs) IN CH1: VODCD1 (20mV/DIV), CH2: IL1 (500mA/DIV), CH3: VODCD2 (20mV/DIV), CH4: IL2 (500mA/DIV) FIGURE 10. INDUCTOR CURRENT RIPPLE (V TIME SCALE = 200ns) CH1: ...

Page 14

Typical Operating Conditions FIGURE 14. 4-CHANNEL DEFAULT START- LOAD CH1: VODCD1 (2V/DIV), CH2: VODCD2 (1V/DIV), CH3: VOLDO1 (1V/DIV), CH4: VOLDO2 (2V/DIV) 100 5. 3. ...

Page 15

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. ...

Page 16

Package Outline Drawing L16.4x4G 16 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 4/10 4.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN ...

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