参数资料
| 型号： | ISL6269IRZ |
| 厂商： | Intersil |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-QFN |
| 标准包装： | 75 |
| 系列： | Robust Ripple Regulator™ (R³) |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 600kHz |
| 电源电压： | 7 V ~ 25 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 100°C |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 包装： | 管件 |
?
ISL6269
Data Sheet
June 25, 2009
FN9177.3
High-Performance Notebook PWM
Controller with Bias Regulator and
Audio-Frequency Clamp
The ISL6269 IC is a Single-Phase Synchronous-Buck PWM
controller featuring Intersil's Robust Ripple Regulator (R 3 )
technology that delivers truly superior dynamic response to
input voltage and output load transients. Integrated
MOSFET drivers, 5V LDO and bootstrap diode result in
fewer components and smaller implementation area.
Intersil’s R 3 technology combines the best features of fixed-
frequency PWM and hysteretic PWM while eliminating many
of their shortcomings. R 3 technology employs an innovative
modulator that synthesizes an AC ripple voltage signal V R ,
analogous to the output inductor ripple current. The AC signal
V R enters a window comparator where the lower threshold is
the error amplifier output V COMP , and the upper threshold is a
programmable voltage reference V W, resulting in generation
of the PWM signal. The voltage reference V W sets the steady
state PWM frequency. Both edges of the PWM can be
modulated in response to input voltage transients and output
load transients, much faster than conventional fixed frequency
PWM controllers. Unlike a conventional hysteretic converter,
the ISL6269 has an error amplifier that provides ±1% voltage
regulation at the FB pin.
The ISL6269 has a 1.5ms digital soft-start and can be started
into a pre-biased output voltage. A resistor divider is used to
program the output voltage setpoint. The ISL6269 can be
configured to operate in continuous-conduction-mode (CCM)
or diode-emulation-mode (DEM), which improves light-load
efficiency. In CCM the controller always operates as a
synchronous rectifier however, when DEM is enabled the
low-side MOSFET is permitted to stay off, blocking negative
current flow into the low-side MOSFET from the output
inductor.
Features
? High performance R 3 technology
? Fast transient response
? +0.6V Internal Reference
- ±0.6% tolerance over the commercial temperature
range (0°C to +70°C)
- ±1.0% tolerance over the industrial temperature range
(-40°C to +85°C)
? Wide input voltage range: +7.0V to +25.0V
? Output voltage range: +0.6V to +3.3V
? Wide output load range: 0A to 25A
? Selectable diode emulation mode for increased light load
efficiency
? Programmable PWM frequency: 200kHz to 600kHz
? Pre-biased output start-up capability
? Internal 5V LDO for self-biasing
? Integrated MOSFET drivers and bootstrap diode
? Internal digital soft-start
? Power good monitor
? PWM minimum frequency above audible spectrum
? Fault protection
- Undervoltage protection
- Soft crowbar overvoltage protection
- Low-side MOSFET r DS(ON) overcurrent protection
- Over-temperature protection
- Fault identification by PGOOD pull-down resistance
? Pb-free (RoHS compliant)
Applications
? PCI express graphical processing unit
Pinout
ISL6269
(16 LD 4x4 QFN)
TOP VIEW
? Auxiliary power rail
? VRM
? Network adapter
Ordering Information
TEMP
PART
NUMBER
PART
RANGE
PACKAGE
PKG.
16
15
14
13
(Note)
MARKING
(°C)
(Pb-free)
DWG. #
VIN
1
12 PVCC
ISL6269CRZ*
ISL6269IRZ*
62 69CRZ -10 to +100 16 Ld 4x4 QFN L16.4x4
62 69IRZ -40 to +100 16 Ld 4x4 QFN L16.4x4
VCC
FCCM
2
3
GND
11 LG
10 PGND
NOTE: These Intersil Pb-free plastic packaged products employ
EN
4
9
ISEN
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination
5
6
7
8
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.
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. 2006, 2007, 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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相关代理商/技术参数 |
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| ISL6269IRZ-T | 功能描述:IC REG CTRLR BUCK PWM 16-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:Robust Ripple Regulator™ (R³) 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6271A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Integrated XScale Regulator |
| ISL6271ACR | 功能描述:IC REG PMIC 1BUCK 2LDO 20-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6271ACR-T | 功能描述:IC PMIC XSCALE PROCESSOR 20-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6271ACRZ | 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 |
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