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參數資料
| 型號： | ISL8502IRZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 2.5A Synchronous Buck Regulator with Integrated MOSFETs |
| 中文描述： | 4 A SWITCHING REGULATOR, 1440 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-24 |
| 文件頁數： | 1/19頁 |
| 文件大小： | 526K |
| 代理商： | ISL8502IRZ |
1
b 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. 2006, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL8502
2.5A Synchronous Buck Regulator with
Integrated MOSFETs
The ISL8502 is a synchronous buck controller with internal
MOSFETs packaged in a small 4mmx4mm QFN package.
The ISL8502 can support a continuous load of 2.5A 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 ISL8502 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 ISL8502 features a bidirectional
Enable pin that allows the part to pull the enable pin low
during fault detection.
Pinout
ISL8502
(24 LD QFN)
TOP VIEW
Features
Over 2.5A Continuous Output Current
Integrated MOSFETs for Small Regulator Footprint
Adjustable Switching Frequency, 500kHz - 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 r
DS(ON)
High Side and Low Side Overcurrent
Protection
Undervoltage Detection
Integrated Thermal Shutdown Protection
Power Good Indication
Adjustable Soft-Start
Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
Point of Load Applications
Graphics Cards - GPU and Memory Supplies
ASIC Power Supplies
Embedded Processor and I/O supplies
DSP Supplies
1
2
3
4
5
6
18
17
16
15
14
13
24
23
22
21
20
19
7
8
9
10
11
12
VIN
PHASE
PHASE
PHASE
PHASE
PGND
PGOOD
SGND
EN
SYNCH
M/S
FS
C
F
S
P
P
P
V
P
B
V
V
V
GND
25
Ordering Information
PART
NUMBER
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL8502IRZ*
(Note)
85 02IRZ
-40 to +85
24 Ld 4x4 QFN
(Pb-free)
L24.4x4D
*Add “-T” suffix for 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.
Data Sheet
January 17, 2007
FN6389.0
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| ISL85033DUALEVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL85033 RoHS:是 類別:編程器，開發系統 >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL85033EVAL2Z | 功能描述:EVAL BOARD2 FOR ISL85033 RoHS:是 類別:編程器，開發系統 >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
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