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參數資料
| 型號： | ISL6271ACRZ-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Integrated XScale Regulator |
| 中文描述： | 0.8 A SWITCHING REGULATOR, PQCC20 |
| 封裝： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220-VGGD, QFN-20 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 588K |
| 代理商： | ISL6271ACRZ-T |
1
FN9171.1
ISL6271A
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.
Pinout
ISL6271A
(4x4 QFN)
TOP VIEW
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”
Technical Brief TB389 “
PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages“
Application Note AN1139
“Setup Instruction for the
ISL6271 Evaluation Kit”
S
B
B
E
G
V
P
P
P
P
VCC
SCL/VID0
SDA/VID1
VIDEN
VID2
LVCC
VSRAM
FB
VPLL
VOUT
1
2
3
4
5
6
7
8
9
10
15
14
13
12
11
20
19
18
17
16
Ordering Information
PART NUMBER*
TEMP.
RANGE (°C)
PACKAGE
PKG.
DWG. #
ISL6271ACR
-25 to 85
20 Ld 4x4 QFN
L20.4x4
ISL6271ACRZ (Note)
-25 to 85
20 Ld 4x4 QFN
(Pb-free)
L20.4x4
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free 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-020C.
Data Sheet
October 8, 2004
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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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL6271AEVAL1 | 功能描述:EVALUATION BOARD FOR ISL6271A RoHS:否 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 |
| 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 制造商全稱:Intersil Corporation 功能描述:1.2A Low Quiescent Current 1.5MHz High Efficiency Synchronous Buck Regulator |
| ISL6273EVAL1 | 功能描述:EVAL BOARD 1 FOR ISL6273 RoHS:否 類別:編程器，開發系統 >> 評估板 - 線性穩壓器 (LDO) 系列:* 產品變化通告:1Q2012 Discontinuation 30/Mar/2012 設計資源:NCP590MNDPTAGEVB Gerber Files 標準包裝:1 系列:- 每 IC 通道數:2 - 雙 輸出電壓:1.8V，2.8V 電流 - 輸出:300mA 輸入電壓:2.1 ~ 5.5 V 穩壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 已供物品:板 已用 IC / 零件:NCP590MNDP 其它名稱:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
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