ISL8033AIRZ Intersil, ISL8033AIRZ Datasheet

no-image

ISL8033AIRZ

Manufacturer Part Number
ISL8033AIRZ
Description
IC REG SYNC BUCK DUAL 3A 24QFN
Manufacturer
Intersil
Type
Step-Down (Buck), PWM - Current Moder
Datasheet

Specifications of ISL8033AIRZ

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
2
Voltage - Output
0.8 V ~ 6 V
Current - Output
3A
Frequency - Switching
2.5MHz
Voltage - Input
2.85 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
*
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL8033AIRZ
Manufacturer:
Intersil
Quantity:
100
Part Number:
ISL8033AIRZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
Dual 3A Low Quiescent Current High Efficiency
Synchronous Buck Regulator
ISL8033, ISL8033A
ISL8033 is a dual integrated power controller rated for 3A per
channel with a 1MHz step-down regulator that is ideal for any low
power low-voltage applications. The ISL8033A offers 2.5MHz
operation for smaller more compacted design. The channels are
180° out-of-phase for input RMS current and EMI reduction. It is
optimized for generating low output voltages down to 0.8V each.
The supply voltage range is from 2.85V to 6V, allowing for the use
of a single Li+ cell, three NiMH cells or a regulated 5V input. It
has a guaranteed minimum output current of 3A each when ISET
is connected to VDD. The output current of each output is
selectable by setting ISET pin.
The ISL8033, ISL8033A includes a pair of low ON-resistance
P-Channel and N-Channel internal MOSFETs to maximize
efficiency and minimize external component count. 100% duty-
cycle operation allows less than 250mV dropout voltage at 3A.
The ISL8033, ISL8033A offers an independent 1ms Power-Good
(PG) timer at power-up. When shutdown, ISL8033, ISL8033A
discharges the output capacitor. Other features include internal
digital soft-start, enable for power sequence, controllable soft-
stop output discharge during disabled, start-up with pre-biased
output, 100% maximum duty cycle for lowest dropout, 100%
duty cycle operation for smooth transition, less than 8µA logic
controlled shutdown current, independent enable, overcurrent
protection, and thermal shutdown.
The ISL8033, ISL8033A is offered in a 24 Ld 4mmx4mm QFN
package with 1mm maximum height. The complete converter
occupies less than 5.46cm
March 24, 2011
FN6854.2
2
area.
1
100
90
80
70
60
50
40
0.0
3.3V
0.5
OUT
FIGURE 1. EFFICIENCY vs LOAD
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1.0
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
I
OUT
1.5
Features
• Dual 3A High Efficiency Synchronous Buck Regulator with up
• 2% Output Accuracy Over-Temperature/Load/Line
• Internal Digital Soft-Start - 1.5ms
• External Synchronization up to 6MHz (ISL8033)
• Internal Current Mode Compensation
• Peak Current Limiting and Hiccup Mode Short Circuit
• Adjustable Peak Overload Current
• Negative Current Protection
• Pb-Free (RoHS Compliant)
Applications
• DC/DC POL Modules
• µC/µP, FPGA and DSP Power
• Plug-in DC/DC Modules for Routers and Switchers
• Test and Measurement Systems
• Li-ion Battery Power Devices
• Bar Code Readers
Related Literature
• See AN1606, ISL8033EVAL1Z Application Note
• See AN1611, ISL8033EVAL2Z Application Note
(A)
to 95% Efficiency
Protection
All other trademarks mentioned are the property of their respective owners.
2.0
V
IN
|
= 5V
2.5
Copyright Intersil Americas Inc. 2010, 2011. All Rights Reserved
3.0

Related parts for ISL8033AIRZ

ISL8033AIRZ Summary of contents

Page 1

... I (A) OUT FIGURE 1. EFFICIENCY vs LOAD 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 2.5 3.0 | ...

Page 2

Typical Application Circuit INPUT 2.85V 2x22µF FIGURE 2. TYPICAL APPLICATION DIAGRAM - DUAL INDEPENDENT OUTPUTS V 0.8V OUT C1 2x22µF C2 (or C4) 2x22µF C3 (or C5) 12pF L1 (or L2) 1.0µH~2.2µH R2 (or R5 ...

Page 3

Block Diagram 3pF SLO 0.5V 1.6k 0.864V + + ...

Page 4

Pin Configuration Pin Descriptions PIN NUMBER SYMBOL 1, 24 LX2 Switching node connection for Channel 2. Connect to one terminal of inductor for VOUT2. 22, 23 PGND2 Negative supply for the power stage of Channel 2. 4 EN2 Regulator Channel ...

Page 5

... Ordering Information PART NUMBER (Notes ISL8033IRZ* 80 33IRZ ISL8033AIRZ* 80 33AIRZ NOTES: 1. Add “-T*” suffix for tape and reel.Please refer to 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). 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 ...

Page 6

... Storage Temperature Range .-65°C to +150°C Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.85V to 6V Load Current Range per Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-55° ...

Page 7

Electrical Specifications Unless otherwise noted, the typical specifications are measured at the following conditions -40°C to +85° 3.6V, EN1 = EN2 = VDD 1.5µ 2x22µ ...

Page 8

Typical Operating Performance ISL8033 Unless otherwise noted, operating conditions are 3A. OUT1 OUT2 100 90 2.5V 1.8V OUT OUT 80 1. 0.0 0.5 1.0 1.5 I (A) OUT FIGURE 3. ...

Page 9

Typical Operating Performance ISL8033 Unless otherwise noted, operating conditions are 3A. (Continued) OUT1 OUT2 2.490 2.485 5V IN 2.480 2.475 2.470 2.465 2.460 0.0 0.5 1.0 1.5 I (A) OUT FIGURE 9. LOAD REGULATION, ...

Page 10

Typical Operating Performance ISL8033 Unless otherwise noted, operating conditions are 3A. (Continued) OUT1 OUT2 V RIPPLE 20mV/DIV OUT1 V OUT2 FIGURE 15. STEADY STATE OPERATION WITH FULL LOADS AT BOTH CHANNELS V RIPPLE 50mV/DIV ...

Page 11

Typical Operating Performance ISL8033 Unless otherwise noted, operating conditions are 3A. (Continued) OUT1 OUT2 FIGURE 21. SOFT-START AT FULL LOAD CHANNEL 2 FIGURE 23. SOFT-DISCHARGE SHUTDOWN CHANNEL 2 LX2 2V/DIV SYNCH 5V/DIV V RIPPLE ...

Page 12

Typical Operating Performance ISL8033 Unless otherwise noted, operating conditions are 3A. (Continued) OUT1 OUT2 LX2 2V/DIV SYNCH 5V/DIV V RIPPLE 20mV/DIV OUT2 IL2 2A/DIV FIGURE 27. CHANNEL 2 STEADY STATE OPERATION AT FULL LOAD ...

Page 13

Typical Operating Performance ISL8033A Unless otherwise noted, operating conditions are: 1.8V 3A. OUT1 OUT2 100 90 80 1.2V OUT 1.5V OUT 0.0 0.5 1.0 1.5 OUTPUT LOAD (A) FIGURE 32. ...

Page 14

Typical Operating Performance ISL8033A Unless otherwise noted, operating conditions are: 1.8V 3A. (Continued) OUT1 OUT2 V RIPPLE 50mV/DIV OUT1 IL1 2A/DIV FIGURE 38. LOAD TRANSIENT CHANNEL 1 Theory of Operation The ISL8033 is a ...

Page 15

Overcurrent Protection CAS1 and CSA2 are used to monitor Output 1 and Output 2 channels respectively. The overcurrent protection is realized by monitoring the CSA output with the OCP threshold logic, as shown in Figure 40. The current sensing circuit ...

Page 16

... 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 17

... 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 18

Package Outline Drawing L24.4x4D 24 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 10/06 4.00 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 18 ISL8033, ...

Related keywords