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| 型号： | ISL6271ACRZ |
| 厂商： | Intersil |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG PMIC 1BUCK 2LDO 20QFN |
| 标准包装： | 75 |
| 应用： | 处理器 |
| 电流 - 电源： | 380µA |
| 电源电压： | 2.76 V ~ 5.5 V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1243 (CN2011-ZH PDF) |
?
ISL6271A
Data Sheet
October 8, 2004
FN9171.1
Integrated XScale Regulator
The ISL6271A is a versatile power management IC (PMIC)
designed for the Xscale type of processors. The device
integrates three regulators, two fault indicators and an I 2 C
bus for communication with a host microprocessor. Two of
the three regulators function as low power, low drop out
regulators, designed to power SRAM and phase-lock loop
circuitry internal to the Xscale processor. The third regulator
uses a proprietary switch-mode topology to power the
processor core and facilitate Dynamic Voltage Management
(DVM), as defined by Intel.
Since power dissipation inside a microprocessor is
proportional to the square of the core voltage, Intel XScale
processors implement DVM as a means to more efficiently
utilize battery capacity. To support this power saving
architecture, the ISL6271A integrates an I 2 C bus for
communication with the host processor. The processor, acting
as the bus master, transmits a “voltage level” and “voltage
slew rate” to the ISL6271A appropriate to the processing
requirements; higher core voltages support higher operating
frequencies and code execution. The bus is fully compliant
with the Phillips? I 2 C protocol and supports both standard
and fast data transmission modes. Alternatively, the output of
the core regulator can be programmed in 50mV increments
from 0.85V to 1.6V using the input Voltage ID (VID) pins. All
three regulators share a common enable pin and are
protected against overcurrent, over temperature and
undervoltage conditions. When disabled via the enable pin,
the ISL6271A enters a low power state that can be used to
conserve battery life while maintaining the last programmed
VID code and slew rate. An integrated soft-start circuit
transitions the ISL6271A output voltages to their default
values at a rate determined by an external soft-start capacitor.
Features
? Three Voltage Regulators (1 Buck, 2 LDOs)
? High-Efficiency, fully-Integrated synchronous buck
regulator with DVM
? 800mA DC output current for the buck regulator
? Proprietary ‘Synthetic Ripple’ Control Topology
? Greater than 1MHz Switching Frequency
? Diode emulation for light load efficiency
? I 2 C Interface Module for DVM from 0.85V to 1.6V
? Optional fixed 4-bit VID-control in lieu of DVM
? Small Output Inductor and Capacitor
? Battery Fault signal
? Input Supply Voltage Range: 2.76V-5.5V
? 4x4 mm QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
? Pb-free Available (RoHS Compliant)
Applications
? PDA
? Cell Phone
? Tablet Devices
? Embedded Processors
Related Literature
? Technical Brief TB379 “ Thermal Characterization of
Packaged Semiconductor Devices”
Pinout
ISL6271A (4x4 QFN) TOP VIEW
? Technical Brief TB389 “ PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages“
? Application Note AN1139 “Setup Instruction for the
ISL6271 Evaluation Kit”
20
19
18
17
16
Ordering Information
VCC
VIDEN
SCL/VID0
1
2
3
15 LVCC
14 VPLL
13 VSRAM
PART NUMBER*
ISL6271ACR
ISL6271ACRZ (Note)
TEMP.
RANGE (°C)
-25 to 85
-25 to 85
PACKAGE
20 Ld 4x4 QFN
20 Ld 4x4 QFN
(Pb-free)
PKG.
DWG. #
L20.4x4
L20.4x4
SDA/VID1
VID2
4
5
12 FB
11 VOUT
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free products employ special Pb-free material sets;
6
7
8
9
10
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-020C.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004. All Rights Reserved
Intel? is a registered trademark of Intel Corporation. All other trademarks mentioned are the property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6271ACRZ-T | 功能描述:直流/直流开关调节器 LD PLL & SRAMG FOR I NTEL PROCESSORS IBM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ISL6271AEVAL1 | 功能描述:EVALUATION BOARD FOR ISL6271A RoHS:否 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 |
| ISL6271CR | 制造商:Rochester Electronics LLC 功能描述:PLL & SRAM REGULATOR FOR INTEL PROCESSORS - Bulk 制造商:Intersil Corporation 功能描述: |
| ISL6271EVAL1 | 制造商:Intersil Corporation 功能描述:ISL6271, PLL & SRAM REGULATOR FOR INTEL PROCESSORS EVALUATIO - Bulk |
| ISL6273 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:1.2A Low Quiescent Current 1.5MHz High Efficiency Synchronous Buck Regulator |
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