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ISL6236A の電気的特性と機能

ISL6236AのメーカーはIntersil Corporationです、この部品の機能は「Main Power Supply Controllers」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6236A
部品説明 Main Power Supply Controllers
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL6236A Datasheet, ISL6236A PDF,ピン配置, 機能
®
Data Sheet
March 14, 2007
ISL6236A
FN6453.0
High-Efficiency, Quad-Output, Main Power
Supply Controllers for Notebook
Computers
The ISL6236A dual step-down, switch-mode power-supply
(SMPS) controller generates logic-supply voltages in
battery-powered systems. The ISL6236A includes two
pulse-width modulation (PWM) controllers, 5V/3.3V and
1.5V/1.05V. The output of SMPS1 can also be adjusted from
0.7V to 5.5V. The SMPS2 output can be adjusted from 0V to
2.5V by setting REFIN2 voltage. An optional external charge
pump can be monitored through SECFB. This device features
a linear regulator providing 3.3V/5V, or adjustable from 0.7V to
4.5V output via LDOREFIN. The linear regulator provides up
to 100mA output current with automatic linear-regulator
bootstrapping to the BYP input. When in switchover, the LDO
output can source up to 200mA. The ISL6236A includes
on-board power-up sequencing, the power-good (POK )
outputs, digital soft-start, and internal soft-stop output
discharge that prevents negative voltages on shutdown.
A constant on-time PWM control scheme operates without
sense resistors and provides 100ns response to load
transients while maintaining a relatively constant switching
frequency. The unique ultrasonic pulse-skipping mode
maintains the switching frequency above 25kHz, which
eliminates noise in audio applications. Other features include
pulse skipping, which maximizes efficiency in light-load
applications, and fixed-frequency PWM mode, which reduces
RF interference in sensitive applications.
Ordering Information
PART
NUMBER
PART
MARKING
TEMP
RANGE
(°C)
PKG.
PACKAGE DWG. #
ISL6236AIRZ ISL6236 AIRZ -40 to +100 32 Ld 5x5 QFN L32.5x5B
(Note)
(Pb-free)
ISL6236AIRZ-T ISL6236 AIRZ -40 to +100 32 Ld 5x5 QFN L32.5x5B
(Note)
(Pb-free)
(Tape and Reel)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are 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
• Wide Input Voltage Range 4.5V to 25V
• Dual Fixed 1.05V/3.3V and 1.5V/5.0V Outputs or
Adjustable 0.7V to 5.5V (SMPS1) and 0V to 2.5V
(SMPS2), ±1.5% Accuracy
• Secondary Feedback Input (Maintains Charge Pump
Voltage)
• 1.7ms Digital Soft-Start and Independent Shutdown
• Fixed 3.3V/5.0V, or Adjustable Output 0.7V to 4.5V,
±1.5% (LDO): 200mA
• 3.3V Reference Voltage ±2.0%: 5mA
• 2.0V Reference Voltage ±1.0%: 50µA
• Constant ON-TIME Control with 100ns Load-Step
Response
• Frequency Selectable
• rDS(ON) Current Sensing
• Programmable Current Limit with Foldback Capability
• Selectable PWM, Skip or Ultrasonic Mode
• BOOT Voltage Monitor with Automatic Refresh
• Independent POK1 and POK2 Comparators
• Soft-Start with Pre-Biased Output and Soft-Stop
• Independent ENABLE
• High Efficiency - up to 97%
• Very High Light Load Efficiency (Skip Mode)
• 5mW Quiescent Power Dissipation
• Thermal Shutdown
• Extremely Low Component Count
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Notebook and Sub-Notebook Computers
• PDAs and Mobile Communication Devices
• 3-Cell and 4-Cell Li+ Battery-Powered Devices
• DDR1, DDR2, and DDR3 Power Supplies
• Graphic Cards
• Game Consoles
• Telecommunications
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. 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6236A pdf, ピン配列
ISL6236A
Absolute Voltage Ratings
VIN, EN LDO to GND. . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +27V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
BOOT to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VCC, EN, SKIP#, TON,
PVCC, POK to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
LDO, FB1, REFIN2, LDOREFIN to GND . . . -0.3V to (VCC + 0.3V)
OUT, SECFB, VREF3, REF to GND . . . . . . . . -0.3V to (VCC + 0.3V
UGATE to PHASE . . . . . . . . . . . . . . . . . . . . -0.3V to (PVCC + 0.3V)
ILIM to GND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VCC + 0.3V)
LGATE, BYP to GND . . . . . . . . . . . . . . . . . . -0.3V to (PVCC + 0.3V)
PGND to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
LDO, REF, VREF3 Short Circuit to GND . . . . . . . . . . . . Continuous
VCC Short Circuit to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1s
LDO Current (Internal Regulator) Continuous . . . . . . . . . . . . 100mA
LDO Current (Switched Over to OUT1) Continuous . . . . . . +200mA
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W)
θJC (°CW)
32 Ld QFN (Notes 1, 2) . . . . . . . . . . . . 32
3.0
Operating Temperature Range . . . . . . . . . . . . . . . .-40°C to +100°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational section of this specification is not implied.
NOTE:
1. θJA 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 θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
PARAMETER
No load on LDO, OUT1, OUT2, VREF3, and REF, VIN = 12V, EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V,
VEN_LDO = 5V, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C.
CONDITIONS
MIN TYP MAX UNITS
MAIN SMPS CONTROLLERS
VIN Input Voltage Range
3.3V Output Voltage in Fixed Mode
1.05V Output Voltage in Fixed Mode
LDO in regulation
VIN = LDO, VOUT1 <4.43V
VIN = 4.5V to 25V, REFIN2 > (VCC - 1V), SKIP# = 5V
VIN = 4.5V to 25V, 3.0 < REFIN2 < (VCC - 1.1V),
SKIP# = 5V
5.5
4.5
3.285
1.038
3.330
1.05
25
5.5
3.375
1.062
V
V
V
V
1.5V Output Voltage in Fixed Mode
5V Output Voltage in Fixed Mode
FB1 in Output Adjustable Mode
REFIN2 in Output Adjustable Mode
SECFB Voltage
SMPS1 Output Voltage Adjust Range
VIN = 4.5V to 25V, FB1 = VCC, SKIP# = 5V
VIN = 5.5V to 25V, FB1 = GND, SKIP# = 5V
VIN = 4.5V to 25V
VIN = 4.5V to 25V
VIN = 4.5V to 25V
SMPS1
1.482
4.975
0.693
0.7
1.920
0.70
1.500
5.050
0.700
2.00
1.518
5.125
0.707
2.50
2.080
5.50
V
V
V
V
V
V
SMPS2 Output Voltage Adjust Range
SMPS2
0.50 2.50 V
SMPS2 Output Voltage Accuracy
(Referred for REFIN2)
REFIN2 = 0.7V to 2.5V, SKIP# = VCC
-1.0 1.0 %
DC Load Regulation
Either SMPS, SKIP# = VCC, 0A to 5A
-0.1 %
Either SMPS, SKIP# = REF, 0A to 5A
-1.7 %
Either SMPS, SKIP# = GND, 0A to 5A
-1.5 %
Line Regulation
Either SMPS, 6V < VIN < 24V
0.005
%/V
Current-Limit Current Source
Temperature = +25°C
4.75 5 5.25 µA
ILIM Adjustment Range
0.2 2 V
Current-Limit Threshold (Positive, Default) ILIM = VCC, GND - PHASE
(No temperature compensation)
93 100 107 mV
3 FN6453.0
March 14, 2007


3Pages


ISL6236A 電子部品, 半導体
ISL6236A
Electrical Specifications
PARAMETER
No load on LDO, OUT1, OUT2, VREF3, and REF, VIN = 12V, EN2 = EN1 = VCC, VBYP = 5V, PVCC = 5V,
VEN_LDO = 5V, TA = -40°C to +100°C, unless otherwise noted. Typical values are at TA = +25°C. (Continued)
CONDITIONS
MIN TYP MAX UNITS
REFIN2 Input Voltage
OUT2 Dynamic Range, VOUT2 = VREFIN2
Fixed OUT2 = 1.05V
0.5 2.50 V
3.0 VCC - 1.1 V
Fixed OUT2 = 3.3V
VCC - 1.0
V
LDOREFIN Input Voltage
Fixed LDO = 5V
0.30 V
LDO Dynamic Range, VLDO = 2 x VLDOREFIN
Fixed LDO = 3.3V
0.35
VCC - 1.0
2.25 V
V
SKIP# Input Voltage
Low level (SKIP)
0.8 V
Float level (ULTRASONIC SKIP)
1.7 2.3 V
High level (PWM)
2.4 V
TON Input Voltage
Low level
0.8 V
Float level
1.7 2.3 V
High level
2.4 V
EN1, EN2 Input Voltage
Clear fault level/SMPS off level
0.8 V
Delay start level
1.7 2.3 V
SMPS on level
2.4 V
EN LDO Input Voltage
Rising edge
1.2 1.6 2.0
V
Falling edge
0.94 1.00 1.06
V
Input Leakage Current
INTERNAL BOOT DIODE
VtON = 0V or 5V
VEN = VEN LDO = 0V or 5V
VSKIP# = 0V or 5V
VFB1 = VSECFB = 0V or 5V
VREFIN = 0V or 2.5V
VLDOREFIN = 0V or 2.75V
-1 +1 µA
-0.1 +0.1 µA
-1 +1 µA
-0.2 +0.2 µA
-0.2 +0.2 µA
-0.2 +0.2 µA
VD Forward Voltage
IBOOT LEAKAGE Leakage Current
MOSFET DRIVERS
PVCC - VBOOT, IF = 10mA
VBOOT = 30V, PHASE = 25V, PVCC = 5V
0.65 0.8
500
V
nA
UGATE Gate-Driver Sink/Source Current UGATE1, UGATE2 forced to 2V
2A
LGATE Gate-Driver Source Current
LGATE1 (source), LGATE2 (source), forced to 2V
1.7 A
LGATE Gate-Driver Sink Current
LGATE1 (sink), LGATE2 (sink), forced to 2V
3.3 A
UGATE Gate-Driver On-Resistance
BOOT_ - PHASE_ forced to 5V, Guaranteed by design
1.5 4.0
Ω
LGATE Gate-Driver On-Resistance
LGATE, high state (pull-up), Guaranteed by design
2.2 5.0
Ω
LGATE, low state (pull-down), Guaranteed by design
0.6 1.5
Ω
Dead Time
LGATE Rising
15 20 35 ns
UGATE Rising
20 30 50 ns
OUT1, OUT2 Discharge On Resistance
25 40 Ω
6 FN6453.0
March 14, 2007

6 Page



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部品番号部品説明メーカ
ISL6236

Main Power Supply Controllers

Intersil Corporation
Intersil Corporation
ISL6236A

Main Power Supply Controllers

Intersil Corporation
Intersil Corporation


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