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PDF ISL62386 Data sheet ( Hoja de datos )
| Número de pieza | ISL62386 | |
| Descripción | Quad Output System Power Supply Controller | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
February 4, 2009
ISL62386
FN6831.0
High-Efficiency, Quad Output System
Power Supply Controller for Notebook
Computers
The ISL62386 controller generates supply voltages for
battery-powered systems. The ISL62386 includes two
pulse-width modulation (PWM) controllers, adjustable from
0.6V to 5.5V, and two linear regulators, LDO5 and LDO3,
that generate a fixed 5V output and a fixed 3.3V output
respectively. Each can deliver up to 100mA. The Channel 2
switching regulator will automatically take over the LDO5
load when programmed to 5V output. This provides a large
power saving and boosts efficiency. The ISL62386 includes
on-board power-up sequencing, one power-good (PGOOD)
output, digital soft-start, and an internal soft-stop output
discharge that prevents negative voltages on shutdown.
The patented R3 PWM control scheme provides a low jitter
system with fast response to load transients. Light-load
efficiency is improved with period-stretching discontinuous
conduction mode (DCM) operation. To eliminate noise in
audio frequency applications, an ultrasonic DCM mode is
included, which limits the minimum switching frequency to
approximately 28kHz.
The ISL62386 is available in a 32 Ld 5x5 TQFN package,
and can operate over the extended temperature range
(-10°C to +100°C).
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
TEMP
RANGE
(°C)
PACKAGE PKG.
(Pb-Free) DWG. #
ISL62386HRTZ 62386 HRTZ -10 to +100 32 Ld 5x5 TQFN L32.5x5A
ISL62386HRTZ-T* 62386 HRTZ -10 to +100 32 Ld 5x5 TQFN L32.5x5A
*Please refer to TB347 for details on reel specifications.
NOTE: 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.
Features
• High Performance R3 Technology
• Fast Transient Response
• ±1% Output Voltage Accuracy: -10°C to +100°C
• Two Fully Programmable Switch-Mode Power Supplies
with Independent Operation
• Programmable Switching Frequency
• Integrated MOSFET Drivers and Bootstrap Diode
• Fixed +3.3V LDO Output with Enable Control
• Fixed +5V LDO with Automatic Switchover to SMPS2
• Internal Soft-Start and Soft-Stop Output Discharge
• Wide Input Voltage Range: +5.5V to +25V
• Full and Ultrasonic Pulse-Skipping Mode
• Power-Good Indicator
• Overvoltage, Undervoltage and Overcurrent Protection
• Thermal Monitor and Protection
• Pb-Free (RoHS Compliant)
Applications
• Notebook and Sub-Notebook Computers
• PDAs and Mobile Communication Devices
• 3-Cell and 4-Cell Li+ Battery-Powered Devices
• General Purpose Switching Buck Regulators
Pinout
ISL62386
(32 LD 5X5 TQFN)
TOP VIEW
32 31 30 29 28 27 26 25
PGOOD 1
24 BOOT2
FSET2 2
23 LGATE2
FCCM 3
22 PGND
AGND2 4
VCC 5
THERMAL PAD
(AGND)
21 LDO5
20 VIN
AGND1 6
19 LDO3
LDO3EN 7
18 LGATE1
FSET1 8
17 BOOT1
9 10 11 12 13 14 15 16
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL62386
www.TDaytapSihceaetl4UA.cpomplication Circuits The following typical application circuits generate the 5V/8A and 3.3V/8A main supplies in a
notebook computer. The input supply (VBAT) range is 5.5V to 25V.
VBAT
4x10µF
3 .3 V
0.22µF
4.7µH
IRF7821
330µF
750
1200pF
45.3k
0.022µF 14k
IRF7832
14k
B O O T1
V IN
BOOT2
UGATE1
PHASE1
UGATE2
PHASE2
LGATE1
LGATE2
ISL62386
OCSET1
IS E N 1
VOUT1
OCSET2
IS E N 2
VOUT2
IRF7821
0.22µF
4.7µH
14k 0.022µF
IRF7832
14k
5V
330µF
750
68.1k 1200pF
FB1
FB2
10k A G N D 1
9.09k
AGND2
3 .3 V
4.7µF
5V
LDO3
LDO5
PGOOD
EN1
100k
LDO5
4.7µF
EN2
LD O 3EN
VCC
1µF
PGND
FCCM
FSET1
FSET2
24.3k
0.01µF
A G N D 1 /2
19.6k
0.01µF
AGND2
AGND1
FIGURE 1. TYPICAL APPLICATION CIRCUIT WITH INDUCTOR DCR CURRENT SENSE
VBAT
4x10µF
3 .3 V
330µF
0.001
1k
0.22µF
4.7µH
1k
750
1200pF 45.3k
BOOT1
IRF7821
UGATE1
PHASE1
IRF7832
LGATE1
V IN
BOOT2
IRF7821
UGATE2
PHASE2
IRF7832
LGATE2
ISL62386
OCSET1
IS E N 1
VOUT1
OCSET2
IS E N 2
VOUT2
0.22µF
4.7µH
0.001
1k 1k
5V
330µF
750
68.1k
1200pF
FB1
FB2
AGND1
10k 3 .3 V
AGND2
LDO3
9.09k
4.7µF
5V
LDO5
PGOOD
EN1
100k
LDO5
4.7µF
EN2
LDO3EN
VCC
1µF
PGND
FCCM
FSET1
FSET2
24.3k
0.01µF
19.6k
0.01µF
A G N D 1 /2
AGND2
AGND1
FIGURE 2. TYPICAL APPLICATION CIRCUIT WITH RESISTOR CURRENT SENSE
5 FN6831.0
February 4, 2009
5 Page 
www.BDaltoaSchkeeDt4Uia.cgomram
FSET 1, 2
FB 1, 2
AGND1, 2
FCCM
VOUT1, 2
VREF
0.6V
ISL62386
VIN
R3
MODULATOR
5V
LDO
4 .8V
VOUT2
PWM
UGATE
DRIVER
SOFT DISCHARGE
EN1, 2
LDO3EN
START-UP
AND
SHUTDOWN
LOGIC
LGATE
DRIVER
LDO 5
BOOT1, 2
UGATE1, 2
PHASE1, 2
LGATE1, 2
PGND
PGOOD
OCSET1, 2
ISEN1, 2
10µA
VREF + 16%
FB1/2
VREF- 16%
BIAS AND
REFERENCE
OCP
PROTECTION LOGIC
OVP/ UVP/ OCP/ OTP
UVP
OVP
VCC
VIN START- UP
3.6V
LDO5
3.3V
LDO
THERMAL
MONITOR
SOFT DISCHARGE
VCC
LDO3
11 FN6831.0
February 4, 2009
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet ISL62386.PDF ] | |
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