003A Просмотр технического описания (PDF) - Intersil
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003A Datasheet PDF : 23 Pages
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ISL85003, ISL85003A
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP RANGE
(°C)
OPTION
FREQUENCY
PACKAGE
(kHz)
(RoHS Compliant)
PKG.
DWG. #
ISL85003FRZ
003F
-40 to +125
SYNC
500
12 Ld DFN
L12.3x4
ISL85003AFRZ
003A
-40 to +125
Soft-Start
500
12 Ld DFN
L12.3x4
ISL85003EVAL2Z
Evaluation Board
ISL85003AEVAL2Z
Evaluation Board
ISL85003DEMO1Z
Demo Evaluation Board
ISL85003ADEMO1Z
Demo Evaluation Board
NOTES:
1. Add “-T” suffix for 6k unit, “-TK” suffix for 1k unit or “-T7A” suffix for 250 unit Tape and Reel options. 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). 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.
3. For Moisture Sensitivity Level (MSL), please see product information page for ISL85003, ISL85003A. For more information on MSL, please see tech
brief TB363.
4. The ISL85003 is provided with a frequency synchronization input. The ISL85003A is a version of the part with programmable soft-start.
TABLE 1. COMPONENTS SELECTION (Refer to Figures 1A and 1B)
VOUT
0.8V
1V
1.2V
1.5V
1.8V
2.5V
3.3V
5V
C5, C6
10µF
10µF
10µF
10µF
10µF
10µF
10µF
10µF
C8
22µF
22µF
22µF
47µF
47µF
47µF
47µF
47µF
C9
22µF
22µF
22µF
22µF
22µF
22µF
22µF
22µF
C1
Open
Open
Open
4.7pF
4.7pF
4.7pF
4.7pF
4.7pF
L1
1.8µH
2.2µH
2.2µH
3.3µH
3.3µH
3.3µH
4.7µH
4.7µH
R1
301kΩ
301kΩ
301kΩ
301kΩ
301kΩ
301kΩ
301kΩ
301kΩ
R2
Open
1.2MΩ
604kΩ
344kΩ
241kΩ
142kΩ
96.3kΩ
57.1kΩ
NOTE: VIN = 12V, IOUT = 3A; The components selection table is a suggestion for typical application using internal compensation mode. For application
that required high output capacitance greater than 200µF, R1 should be adjusted to maintain loop response bandwidth about 40kHz. See “Loop
Compensation Design” on page 19 for more detail.
PART NUMBER
ISL85003
ISL85003A
TABLE 2. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
INTERNAL/EXTERNAL
COMPENSATION
EXTERNAL FREQUENCY
SYNC
PROGRAMMABLE
SOFT-START
Yes
Yes
No
Yes
No
Yes
SWITCHING FREQUENCY
300kHz to 2MHz
500kHz
FN7968 Rev.2.00
Jan 15, 2016
Page 5 of 23
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