DataSheet.jp

8502A の電気的特性と機能

8502AのメーカーはIntersil Corporationです、この部品の機能は「 ISL8502A」です。


製品の詳細 ( Datasheet PDF )

部品番号 8502A
部品説明 ISL8502A
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




このページの下部にプレビューと8502Aダウンロード(pdfファイル)リンクがあります。

Total 20 pages

No Preview Available !

8502A Datasheet, 8502A PDF,ピン配置, 機能
2A Synchronous Buck Regulator with Integrated
MOSFETs
ISL8502A
The ISL8502A is a synchronous buck controller with internal
MOSFETs packaged in a small 4mmx4mm QFN package. The
ISL8502A can support a continuous load of 2A and has a very
wide input voltage range. With the switching MOSFETs
integrated into the IC, the complete regulator footprint can be
very small and provide a much more efficient solution than a
linear regulator.
The ISL8502A is capable of stand-alone operation or it can be
used in a master slave combination for multiple outputs that
are derived from the same input rail. Multiple slave channels
(up to six) can be synchronized. This method minimizes the
EMI and beat frequencies effect with multi-channel operation.
The switching PWM controller drives two internal N-Channel
MOSFETs in a synchronous-rectified buck converter topology.
The synchronous buck converter uses voltage-mode control
with fast transient response. The switching regulator provides
a maximum static regulation tolerance of ±1% over line, load,
and temperature ranges. The output is user-adjustable by
means of external resistors down to 0.6V.
The output is monitored for undervoltage events. The switching
regulator also has overcurrent protection. Thermal shutdown is
integrated. The ISL8502A features a bi-directional Enable pin
that allows the part to pull the enable pin low during fault
detection.
PGOOD delay for ISL8502A has been decreased to 1ms typical
(at 500kHz switching frequency) compared to 250ms (at
500kHz) for ISL8502.
Features
• Up to 2A Continuous Output Current
• Integrated MOSFETs for Small Regulator Footprint
• Adjustable Switching Frequency, 500kHz to 1.2MHz
• Tight Output Voltage Regulation, ±1% Over-temperature
• Wide Input Voltage Range, 5V ±10% or 5.5V to 14V
• Wide Output Voltage Range, from 0.6V
• Simple Single-Loop Voltage-Mode PWM Control Design
• Input Voltage Feed-Forward for Constant Modulator Gain
• Fast PWM Converter Transient Response
• Lossless rDS(ON) High Side and Low Side Overcurrent
Protections
• Undervoltage Detection
• Integrated Thermal Shutdown Protection
• Power-Good Indication
• Adjustable Soft-Start
• Start-Up with Pre-Bias Output
• Pb-free (RoHS Compliant)
Applications
www.DataSheet.co.kr
Point of Load Applications
Graphics Cards - GPU and Memory Supplies
• ASIC Power Supplies
• Embedded Processor and I/O Supplies
• DSP Supplies
POWER GOOD
ENABLE
PGOOD
EN
VIN
+
VIN
5.5V TO 14V
POWER GOOD
ENABLE
SYNCH
M/S
BOOT
VCC
PVCC
SS
ISL8502A
PHASE
VOUT
+
PGND
FS
FB
SGND
COMP
PGOOD
EN
PVCC
VCC
SS
SYNCH
M/S
FS
SGND
VIN
BOOT
ISL8502A
PHASE
PGND
FB
COMP
4.5V TO 5.5VVIN
+
VOUT
+
FIGURE 1. STAND-ALONE REGULATOR: VIN 5.5V TO 14V
FIGURE 2. STAND-ALONE REGULATOR: VIN 4.5V TO 5.5V
October 21, 2011
FN7940.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
Datasheet pdf - http://www.DataSheet4U.net/

1 Page





8502A pdf, ピン配列
Pin Configuration*
ISL8502A
ISL8502A
(24 LD QFN)
TOP VIEW
24 23 22 21 20 19
PGOOD 1
18 VIN
SGND 2
17 PHASE
EN 3
SYNCH 4
GND
25
16 PHASE
15 PHASE
M/S 5
14 PHASE
FS 6
13 PGND
7 8 9 10 11 12
*See “Functional Pin Descriptions” beginning on page 13 for pin descriptions.
Ordering Information
PART
NUMBER
(Note 2)
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-free)
PKG. DWG. #
ISL8502AIRZ (Notes 1, 3)
85 02AIRZ
-40 to +85
24 Ld 4x4 QFN
L24.4x4D
ISL8502AEVAL1Z
Evaluation Board
www.DataSheet.co.kr
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. For Moisture Sensitivity Level (MSL), please see device information page for ISL8502A. For more information on MSL please see
Tech Brief TB363.
3 FN7940.0
October 21, 2011
Datasheet pdf - http://www.DataSheet4U.net/


3Pages


8502A 電子部品, 半導体
ISL8502A
Absolute Maximum Ratings
VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +16.5V
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +6.0V
Absolute Boot Voltage, VBOOT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +22.0V
Upper Driver Supply Voltage, VBOOT - VPHASE. . . . . . . . . . . . . . . . . . . +6.0V
All other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VCC + 0.3V
Recommended Operating Conditions
Supply Voltage on VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V to 14V
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . -40°C to +125°C
Thermal Information
Thermal Resistance
θJA (°C/W) θJC (°C/W)
QFN Package (Notes 4, 5) . . . . . . . . . . . . .
38
2
Maximum Junction Temperature (Plastic Package) . . . . . . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . . . . . -65°C to +150°C
Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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. 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.
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Refer to “Block Diagram”and “Typical Application Schematics”. Operating conditions unless otherwise noted:
VIN = 12V, or VCC = 5V ±10%, TA = -40°C to +85°C. Typical are at TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C
PARAMETER
SYMBOL
TEST CONDITIONS
MIN MAX
(Note 6) TYP (Note 6) UNITS
VIN SUPPLY
Input Voltage Range
VIN 5.5 14 V
(Note 7)
(Note 8)
Input Operating Supply Current
Input Standby Supply Current
SERIES REGULATOR
IQ
IQ_SBY
VIN tied to VCC
VFB = 1.0V
EN tied to GND, VIN = 14Vwww.DataSheet.co.kr
4.5 5.5
7
1.25
2
V
mA
mA
VCC Voltage
Maximum Output Current
VCC Current Limit
POWER-ON RESET
VPVCC
IPVCC
VIN > 5.6V
VIN = 12V
VIN = 12V, VCC shorted to PGND
4.5 5.0 5.5
50
300
V
mA
mA
Rising VCC POR Threshold
4.2 4.4 4.49
V
Falling VCC POR Threshold
3.85 4.0 4.10
V
ENABLE
Rising Enable Threshold Voltage
Falling Enable Threshold Voltage
Enable Sinking Current
OSCILLATOR
VEN_Rising
VEN_Fall
IEN
2.7 V
2.3 V
500 µA
PWM Frequency
fOSC
RT = 96kΩ
RT = 40kΩ
FS pin tied to VCC
400 500 600 kHz
960 1200 1440 kHz
800 kHz
Ramp Amplitude
Ramp Amplitude
Modulator Gain
Maximum Duty Cycle
Maximum Duty Cycle
REFERENCE VOLTAGE
ΔVOSC
ΔVOSC
VVIN/ΔVOSC
DMAX
DMAX
VIN = 14V
VIN = 5V
By Design
fOSC = 500kHz
fOSC = 1.2MHz
1.0
0.470
8
88
76
V
V
-
%
%
Reference Voltage
VREF
0.600
V
6 FN7940.0
October 21, 2011
Datasheet pdf - http://www.DataSheet4U.net/

6 Page



ページ 合計 : 20 ページ
 
PDF
ダウンロード
[ 8502A データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
8502A

ISL8502A

Intersil Corporation
Intersil Corporation


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap