intersil ISL6410, ISL6410A DATA SHEET
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ISL6410, ISL6410A
Data Sheet September 17, 2004
Single Synchronous Buck Regulators
with Integrated FET
The ISL6410, ISL6410A are synchronous current-mode
PWM regulators designed to provide a total DC-DC solution
for microcontrollers, microprocessors, CPLDs, FPGAs, core
processors/BBP/MAC, and ASICs. The ISL6410 should be
selected for applications using 3.3V ±10% as an input
voltage and the ISL6410A in applications requiring 5.0V
±10%.
These synchronous current mode PWM regulators have
integrated N- and P-Channel power MOSFETs and provide
pre-set pin programmable outputs. Synchronous rectification
with internal MOSFETs is used to achieve higher efficiency
and a reduced external component count. The operating
frequency of 750kHz typical allows the use of small inductor
and capacitor values. The device can be synchronized to an
external clock signal in the range of 500kHz to 1MHz. A
power good signal “PG” is generated when the output
voltage falls outside the regulation limits. Other features
include overcurrent protection and thermal overload
shutdown. The ISL6410, ISL6410A are available in an
MSOP 10 lead package.
Ordering Information
TEMP.
PART NUMBER*
RANGE (°C) PACKAGE
ISL6410IR -40 to 85 16 Ld 4x4 QFN L16.4x4
ISL6410IRZ (Note) -40 to 85 16 Ld 4x4 QFN
(Pb-free)
ISL6410IU -40 to 85 10 Ld MSOP M10.118
ISL6410IUZ (Note) -40 to 85 10 Ld MSOP (Pb-free) M10.118
ISL6410AIR -40 to 85 16 Ld 4x4 QFN L16.4x4
ISL6410AIRZ (Note) -40 to 85 16 Ld 4x4 QFN
(Pb-free)
ISL6410AIU -40 to 85 10 Ld MSOP M10.118
ISL6410AIUZ (Note) -40 to 85 10 Ld MSOP (Pb-free) M10.118
*For tape and reel, add “-T”, “-TK” or “-T5K” suffix.
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is 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-020B.
PKG.
DWG. #
L16.4x4
L16.4x4
FN9149.3
Features
• Fully Integrated Synchronous Buck Regulator
• PWM Fixed Output Voltage Options
- 1.8V, 1.5V or 1.2V with ISL6410 (VIN = 3.3V)
- 3.3V, 1.8V or 1.2V with ISL6410A (VIN = 5.0V)
• Continuous Output Current . . . . . . . . . . . . . . . . . . 600mA
• Ultra-Compact DC-DC Converter Design
• Stable with Small Ceramic Output Capacitors
• High Conversion Efficiency
• Extensive Circuit Protection and Monitoring features
- Overvoltage, UVLO
- Overcurrent
- Thermal Shutdown
• Available in MSOP and QFN packages
• QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
• Pb-Free Packaging Available
Applications
• CPUs, DSP, CPLDs, FPGAs
• ASICs
• DVD and DSL applications
•WLAN Cards
• Generic 5V to 3.3V Conversion
Pinouts
ISL6410 (MSOP)
PVCC
1
VIN
2
GND
3
PG
4
FB
5
TOP VIEW
PGND
10
L
9
VIN
EN
8
SYNC
7
VSET
6
CT
GND
PG
ISL6410 (QFN)
TOP VIEW
VIN
PVCC
16 14 13
15
1
2
3
4
L
PGND
12
NC
RESET
11
10
EN
9
SYNC
6578
FB
NC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved
PG
VSET
ISL6410, ISL6410A
0.1µF
VOUT
L1
8.2µH
1
PVCC
SENSE
CURRENT
10µF
9
L
GATE
DRIVE
10
PGND
5
FB
VIN
2
SLOPE
SOFT
COMPENSATION
START
GND
3
EN
PWM
OVERCURRENT,
OVERVOLTAGE
GM
EA
LOGIC
PG
4
POWER GOOD
PWM
OUT
UVLO
V
VSET
6
750kHz
COMPENSATION
OSCILLATOR
SYNC
7
PWM
0.45V
REFERENCE
EN
8
1. VIN is 3.3V for ISL6410 and 5.0V for ISL6410A.
NOTES:
2. VSET in the above schematic is connected to VIN, so the VOUT is 1.8V for ISL6410 and 3.3V for ISL6410A.
Functional Block Diagram for MSOP Version
10µF
VIN
2
ISL6410, ISL6410A
0.1µF
VOUT
L1
8.2µH
15
PVCC
SENSE
CURRENT
10µF
14
L
GATE
DRIVE
13
PGND
RESET
11
RESET
BLOCK
IN
V
5
FB
T
C
2
PG
8
VIN
16
SLOPE
SOFT
COMPENSATION
START
GND
3
EN
PWM
OVERCURRENT,
OVERVOLTAGE
GM
EA
LOGIC
PG
4
POWER GOOD
PWM
OUT
UVLO
V
VSET
7
750kHz
COMPENSATION
OSCILLATOR
SYNC
9
PWM
0.45V
REFERENCE
EN
10
1. VIN is 3.3V for ISL6410 and 5.0V for ISL6410A.
NOTES:
2. VSET in the above schematic is connected to VIN, so the VOUT is 1.8V for ISL6410 and 3.3V for ISL6410A.
Functional Block Diagram for QFN Version
10µF
VIN
3
Typical Application Schematics
VIN
3.3V
±10%
C
IN
10µF
ISL6410, ISL6410A
0.1µF
VIN
5.0V
±10%
C
10µF
1
2
3
4
5
PVCC
VIN
GND
PG
FB
PGND
ISL6410
SYNC
VSET
EN
10
L
9
8
7
6
L1
8.2µH
C
OUT
10µF
V
OUT
1.8V
FIGURE 1. SCHEMATIC USING THE ISL6410 MSOP
IN
1
2
3
4
5
0.1µF
PVCC
VIN
GND
PG
FB
PGND
ISL6410A
SYNC
VSET
EN
10
L
9
8
7
L1
12µH
C
OUT
10µF
V
OUT
3.3V
6
+3.3V
VIN
GND
C7
0.1µF
C
10µF
IN
4
C
0.01µF
FIGURE 2. SCHEMATIC USING THE ISL6410A MSOP
1
VIN
2
CT
3
GND
4
PG
17
16 15 14 13
EP
567 8
L
VIN
PVCC
U1
ISL6410IR
NC
FB
VSET
PGND
NC
RESET
EN
SYNC
PG
12
11
10
9
1µF
T
FIGURE 3. SCHEMATIC USING THE ISL6410 QFN
L1
8.2µH
C
OUT
10µF
+1.2V
VOUT
GND
RESET
BAR
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