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DATASHEET
ISL62391, ISL62392, ISL62391C, ISL62392C
High-Efficiency, Triple-Output System Power Supply Controller for Notebook
Computers
FN6666
Rev 8.00
August 25, 2015
The ISL62391, ISL62392, ISL62391C and ISL62392C
controller generate supply voltages for battery-powered
systems. It includes two pulse-width modulation (PWM)
controllers, adjustable from 0.6V to 5.5V, and a linear
regulator (LDO3) that generates a fixed 3.3V and can deliver
up to 100mA. The ISL62391, ISL62392, ISL62391C and
ISL62392C include on-board power-up sequencing, a
power-good (PGOOD) output, digital soft-start, and 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 28kHz.
The ISL62391, ISL62391C and ISL62392, ISL62392C are
identical except for how their overvoltage protection is
handled. The ISL62391 and ISL62391C utilize a tri-state
overvoltage scheme, whereas the ISL62392 and ISL62392C
employ a soft-crowbar method.
The ISL62391, ISL62392, ISL62391C and ISL62392C are
available in a 28 Ld 4x4 TQFN package and operate over
the extended temperature range (-40°C to +100°C).
Features
• High Performance R3 Technology
• Fast Transient Response
• ±1% Output Voltage Accuracy
• 2 Fully Programmable Switch-Mode Power Supplies
• Programmable Switching Frequency
• Fixed 3.3V LDO Output
• 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
Pinout
ISL62391, ISL62392, ISL62391C, ISL62392C
(28 LD 4X4 TQFN)
TOP VIEW
28 27 26 25 24 23 22
PGOOD 1
21 BOOT2
FSET2 2
20 LGATE2
FCCM 3
19 PGND
VCC 4
18 PVCC
LDO3EN 5
17 VIN
FSET1 6
FB1 7
CENTER PAD:
GND
16 LDO3
15 LGATE1
8 9 10 11 12 13 14
FN6666 Rev 8.00
August 25, 2015
Page 1 of 22

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ISL62391, ISL62392, ISL62391C, ISL62392C
Ordering Information
PART NUMBER
(Notes 1, 2)
PART MARKING
TEMP RANGE (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL62391HRTZ (Note 3)
623 91HRTZ
-10 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62392HRTZ (Note 3)
623 92HRTZ
-10 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62391CHRTZ (No longer available or 62391C HRTZ
supported)
-10 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62392CHRTZ
62392C HRTZ
-10 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62391IRTZ (Note 3)
623 91IRTZ
-40 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62392IRTZ (Note 3)
623 92IRTZ
-40 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62391CIRTZ (No longer available or 62391C IRTZ
supported)
-40 to +100
28 Ld 4x4 TQFN
L28.4x4
ISL62392CIRTZ
62392C IRTZ
-40 to +100
28 Ld 4x4 TQFN
L28.4x4
NOTES:
1. Add “-T*” suffix for tape and reel. 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. Not Recommended for New Designs. No Recommended Replacement.
FN6666 Rev 8.00
August 25, 2015
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ISL62391, ISL62392, ISL62391C, ISL62392C
Absolute Maximum Ratings
VIN to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +28V
VCC, PGOOD, PVCC 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, PVCC +0.3V
(<100ns Pulse Width, 4µJ) . . . . . . . . . . . . . . . . . . . . . . . . . . -2.0V
LDO3 Current (Internal Regulator) Continuous . . . . . . . . . +100mA
Thermal Information
Thermal Resistance (Typical, Notes 4, 5) JA (°C/W) JC (°C/W)
TQFN Package . . . . . . . . . . . . . . . . . .
37
3.5
Junction Temperature Range. . . . . . . . . . . . . . . . . .-55C to +150°C
Operating Temperature Range
ISL62391IRTZ). . . . . . . . . . . . . . . . . . . . . . . . . . .-40C to +100°C
ISL62392IRTZ). . . . . . . . . . . . . . . . . . . . . . . . . . .-40C to +100°C
Operating Temperature Range
ISL62391HRTZ) . . . . . . . . . . . . . . . . . . . . . . . . . .-10C to +100°C
ISL62392HRTZ) . . . . . . . . . . . . . . . . . . . . . . . . . .-10C to +100°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65C to +150°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Ambient Temperature Range
ISL62391IRTZ). . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
ISL62392IRTZ). . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C
Ambient Temperature Range
ISL62391HRTZ) . . . . . . . . . . . . . . . . . . . . . . . . . .-10°C to +100°C
ISL62392HRTZ) . . . . . . . . . . . . . . . . . . . . . . . . . .-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:
4. 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.
5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications VIN = 12V, EN = VCC, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C.
Boldface limits apply over the operating temperature range.
PARAMETER
CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
LINEAR REGULATOR
VIN Power-on Reset
Rising Threshold
5.3 5.4 5.5
V
Hysteresis
20 80 150 mV
VIN Shutdown Supply Current
EN1 = EN2 = LDO3EN = 0
6 15 µA
VIN Standby Supply Current
EN1 = EN2 = 0, LDO3EN = 1
150 250
µA
LDO3 Output Voltage
I_LDO3 = 100mA
3.25 3.3 3.35
V
I_LDO3 = 0mA
3.25 3.3 3.35
V
LDO3 Short-Circuit Current
LDO3 = GND
180 mA
LDO3EN Input Voltage
Rising edge
1.1 2.5 V
Falling edge
0.94 1.06 V
LDO3EN Input Leakage Current
LDO3EN = 0 or VCC
-1 1 µA
LDO3 Discharge ON-resistance
LDO3EN = 0
36 60
PVCC POR Threshold
4.2 V
SMPS2 to PVCC Switchover Threshold
4.63 4.8 4.93
V
SMPS2 to PVCC Switchover Resistance
VOUT2 to PVCC, VOUT2 = 5V
2.5 3.2
MAIN SMPS CONTROLLERS
VCC Input Bias Current
EN1 = EN2 = 1, FB1 = FB2 = 0.65V
2 mA
VCC Start-up Voltage
EN1 = EN2 = LDO3EN = GND
3.45 3.6 3.75
V
FN6666 Rev 8.00
August 25, 2015
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ISL62391, ISL62392, ISL62391C, ISL62392C
Electrical Specifications VIN = 12V, EN = VCC, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C.
Boldface limits apply over the operating temperature range. (Continued)
PARAMETER
CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
VCC POR Threshold
Rising Edge
4.33 4.50 4.55
V
Rising Edge (ISL62391HRTZ, ISL62392HRTZ,
TA = -10°C to +100°C)
Falling Edge
4.35
4.08
4.50
4.20
4.55
4.30
V
V
Reference Voltage
Falling Edge (ISL62391HRTZ, ISL62392HRTZ,
TA = -10°C to +100°C)
4.10 4.20 4.30
0.6
V
V
Regulation Accuracy
VOUT regulated to 0.6V
-1 1 %
FB Input Bias Current
FB = 0.6V
-12 30 nA
Frequency Range
FB = 0.6V (ISL62391HRTZ, ISL62392HRTZ,
TA = -10°C to +100°C)
-10
200
30 nA
600 kHz
Frequency Set Accuracy
VOUT Voltage Adjust Range
FSW = 300kHz (Note 6)
VIN 6V for VOUT = 5.5V
-12 12 %
0.6 5.5 V
VOUT Soft-discharge Resistance
14 50
PGOOD Pull-down Impedance
32 50
PGOOD Leakage Current
PGOOD = VCC
0 1 µA
Maximum PGOOD Sink Current
5 mA
PGOOD Soft-start Delay
(From first EN = 1 to PGOOD = 1)
EN1 = EN2 = 1
2.20 2.75 3.70
EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1 4.50 5.60 7.60
ms
ms
EN1 = 1, EN2 = Floating or EN1 = Floating, EN2 =1 4.50 5.60 7.50
(ISL62391HRTZ, ISL62392HRTZ, TA = -10°C to
+100°C)
ms
UGATE Pull-up ON-resistance
200mA source current
1.0 1.5
UGATE Source Current
UGATE-PHASE = 2.5V
2.0 A
UGATE Pull-down ON-resistance
250mA source current
1.0 1.5
UGATE Sink Current
UGATE-PHASE = 2.5V
2.0 A
LGATE Pull-up ON-resistance
250mA source current
1.0 1.5
LGATE Source Current
LGATE-PGND = 2.5V
2.0 A
LGATE Pull-down ON-resistance
250mA source current
0.5 0.9
LGATE Sink Current
LGATE-PGND = 2.5V
4.0 A
UGATE to LGATE Deadtime
UG falling to LG rising, no load
21 ns
LGATE to UGATE Deadtime
LG falling to UG rising, no load
21 ns
Bootstrap Diode Forward Voltage
2mA forward diode current
0.58 V
Bootstrap Diode Reverse Leakage Current
FCCM Input Voltage
VR = 25V
Low Level (DCM enabled)
0.2 1 µA
0.8 V
Float Level (audio filter enabled)
1.9 2.1 V
High Level (forced CCM)
2.4 V
FCCM Input Leakage Current
FCCM = GND or VCC
-2 2 µA
Audio Filter Switching Frequency
FCCM floating
28 kHz
EN Input Voltage
Low Level (Clear fault level/SMPS off)
0.8 V
Float Level (Delayed start)
1.9 2.1 V
High Level (SMPS on)
2.4 V
FN6666 Rev 8.00
August 25, 2015
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ISL62391, ISL62392, ISL62391C, ISL62392C
Electrical Specifications VIN = 12V, EN = VCC, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C.
Boldface limits apply over the operating temperature range. (Continued)
PARAMETER
CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNITS
EN Input Leakage Current
EN = GND or VCC
-3.5 3.5 µA
ISEN Input Impedance
EN = VCC
600 k
ISEN Input Leakage Current
EN = GND
0.1 µA
OCSET Input Impedance
EN = VCC
600 k
OCSET Input Leakage Current
EN = GND
0.1 µA
OCSET Current Source
EN = VCC
8.7 10.0 10.5 µA
OCP (OCSET-ISEN) Threshold
EN = VCC (ISL62391HRTZ, ISL62392HRTZ,
TA = -10°C to +100°C)
9 10.0 10.5
-1.75 0.0 1.75
µA
mV
UVP Threshold
Falling edge, referenced to FB
80.9 84 87 %
OVP Threshold
Falling edge, referenced to FB (ISL62391HRTZ,
ISL62392HRTZ, TA = -10°C to +100°C)
Rising edge, referenced to FB
81 84 87
113 116 120
%
%
Falling edge, referenced to FB
99.5 103 106
%
OTP Threshold
Rising edge
150 °C
Falling edge
135
NOTES:
6. FSW accuracy reflects IC tolerance only; it does not include frequency variation due to VIN, VOUT, LOUT, ESRCOUT, or other application specific
parameters.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
FN6666 Rev 8.00
August 25, 2015
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