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Renesas Electronics Components Datasheet

ISL62386 Datasheet

Quad Output System Power Supply Controller

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DATASHEET
ISL62386
High-Efficiency, Quad Output System Power Supply Controller for Notebook
Computers
FN6831
Rev 0.00
February 4, 2009
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
(Pb-Free)
PKG.
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
FN6831 Rev 0.00
February 4, 2009
Page 1 of 20


Renesas Electronics Components Datasheet

ISL62386 Datasheet

Quad Output System Power Supply Controller

No Preview Available !

ISL62386
Absolute Maximum Ratings
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
VCC, PGOOD, LDO3, LDO5 to GND. . . . . . . . . . . . . -0.3V to +7.0V
EN1,2, LDO3EN . . . . . . . . . . . . . . . . . . . . -0.3V to GND, VCC + 0.3V
VOUT1,2, FB1,2, FSET1,2 . . . . . . . . . . . . -0.3V to GND, VCC + 0.3V
PHASE1,2 to GND . . . . . . . . . . . . . . . . . . . . . . . (DC) -0.3V to +28V
(<100ns Pulse Width, 10µJ) . . . . . . . . . . . . . . . . . . . . . . . . . -5.0V
BOOT1,2 to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
BOOT1,2 to PHASE1,2 . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +7V
UGATE1,2 . . . . . . . . . . . (DC) -0.3V to PHASE1,2, BOOT1,2 + 0.3V
(<200ns Pulse Width, 20µJ) . . . . . . . . . . . . . . . . . . . . . . . . -4.0V
LGATE1,2 . . . . . . . . . . . . . . . . . . . . (DC) -0.3V to GND, VCC + 0.3V
(<100ns Pulse Width, 4µJ) . . . . . . . . . . . . . . . . . . . . . . . . . . -2.0V
LDO3, LDO5 Output Continuous Current . . . . . . . . . . . . . . +100mA
Thermal Information
Thermal Resistance (Typical, Notes 1, 2) JA (°C/W) JC (°C/W)
TQFN Package . . . . . . . . . . . . . . . . . .
32
2
Junction Temperature Range. . . . . . . . . . . . . . . . . .-55°C to +150C
Operating Temperature Range . . . . . . . . . . . . . . . .-10C to +100C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Ambient Temperature Range. . . . . . . . . . . . . . . . . .-10°C to +100°C
Supply Voltage (VIN to GND). . . . . . . . . . . . . . . . . . . . . 5.5V to 25V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
These specifications apply for TA = -10°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C,
VIN = 12V; Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified.
Temperature limits established by characterization and are not production tested.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN
VIN Power-on Reset (POR)
Rising Threshold
5.3 5.4 5.5 V
Hysteresis
20 80 150 mV
VIN Shutdown Supply Current
EN1 = EN2 = GND or Floating, LDO3EN = GND
-
6 15 µA
VIN Standby Supply Current
LINEAR REGULATOR
EN1 = EN2 = GND or Floating, LDO3EN = VCC
-
150 250
µA
LDO5 Output Voltage
LDO5 Short-Circuit Current (Note 3)
I_LDO5 = 0
I_LDO5 = 100mA (Note 3)
LDO5 = GND
4.9 5.0 5.1 V
4.9 5.0 5.1 V
- 190 - mA
LDO5 UVLO Threshold Voltage (Note 3)
Rising edge of LDO5
- 4.35 -
V
Falling edge of LDO5
- 4.15 -
V
SMPS2 to LDO5 Switchover Threshold
4.63 4.80 4.93
V
SMPS2 to LDO5 Switchover Resistance (Note 3) VOUT2 to LDO5, VOUT2 = 5V
LDO3 Output Voltage
I_LDO3 = 0
I_LDO3 = 100mA (Note 3)
LDO3 Short-Circuit Current (Note 3)
LDO3 = GND
-
2.5 3.2
3.25 3.3 3.35 V
3.25 3.3 3.35 V
- 180 - mA
LDO3EN Input Voltage
Rising edge
1.1 - 2.5 V
Falling edge
0.94 - 1.06 V
LDO3EN Input Leakage Current
LDO3 Discharge ON-Resistance
LDO3EN = GND or VCC
LDO3EN = GND
-1 - 1 µA
- 36 60
VCC
VCC Input Bias Current (Note 3)
VCC Start-up Voltage
PWM
EN1 = EN2 = VCC, FB1 = FB2 = 0.65V
EN1 = EN2 = LDO3EN = GND
- 2 - mA
3.45 3.6 3.75 V
FN6831 Rev 0.00
February 4, 2009
Page 2 of 20


Part Number ISL62386
Description Quad Output System Power Supply Controller
Maker Renesas
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ISL62386 Datasheet PDF






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