参数资料
| 型号： | ISL8502IRZ |
| 厂商： | Intersil |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 2.5A 24QFN |
| 标准包装： | 75 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.6 V ~ 14 V |
| 输入电压： | 5V，5.5 V ~ 14 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 500kHz ~ 1.2MHz |
| 电流 - 输出： | 2.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 24-QFN（4x4） |
?
ISL8502
Data Sheet
June 29, 2010
FN6389.2
2A 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 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 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 bi-directional
Enable pin that allows the part to pull the enable pin low
during fault detection.
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 r DS(ON) High Side and Low Side Overcurrent
Protection
? Undervoltage Detection
? Integrated Thermal Shutdown Protection
? Power-Good Indication
? Adjustable Soft-Start
? Start-Up with Pre-Bias Output
? Pb-free (RoHS Compliant)
Applications
? Point of Load Applications
? Graphics Cards - GPU and Memory Supplies
? ASIC Power Supplies
Pinout
ISL8502
(24 LD QFN)
TOP VIEW
? Embedded Processor and I/O supplies
? DSP Supplies
Ordering Information
24
23
22
21
20
19
PART
TEMP.
NUMBER
PART
RANGE
PACKAGE
PKG.
PGOOD
1
18 VIN
(Note)
MARKING
(°C)
(Pb-free)
DWG. #
SGND
2
17 PHASE
ISL8502IRZ*
85 02IRZ
-40 to +85
24 Ld 4x4 QFN L24.4x4D
EN
SYNCH
M/S
FS
3
4
5
6
GND
25
16 PHASE
15 PHASE
14 PHASE
13 PGND
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
7
8
9
10
11
12
Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
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, 2008, 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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| ISL8502IRZ-T | 功能描述:IC REG BUCK SYNC ADJ 2.5A 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:升压（升压） 输出类型:两者兼有 输出数:1 输出电压:5V，2 V ~ 16.5 V 输入电压:2 V ~ 16.5 V PWM 型:- 频率 - 开关:45kHz 电流 - 输出:50mA 同步整流器:无 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:8-PDIP |
| ISL85033-12VEVAL3Z | 功能描述:EVAL BAORD FOR ISL85033 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL85033DUALEVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL85033 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型: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 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL85033IRTZ | 功能描述:IC REG BUCK SYNC ADJ 3A 28TQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:两者兼有 输出数:1 输出电压:5V，1 V ~ 10 V 输入电压:3.5 V ~ 28 V PWM 型:电流模式 频率 - 开关:220kHz ~ 1MHz 电流 - 输出:600mA 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:16-QSOP |
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