参数资料
| 型号： | ISL6268CAZ |
| 厂商： | Intersil |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-QSOP |
| 标准包装： | 980 |
| 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： | -10°C ~ 100°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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ISL6268
Data Sheet
August 22, 2006
FN6348.0
High-Performance Notebook PWM
Controller
The ISL6268 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 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 ISL6268 has an error
amplifier that provides ±1% voltage regulation at the FB pin.
The ISL6268 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 ISL6268
normally operates in continuous-conduction-mode (CCM),
automatically entering diode-emulation-mode (DEM) at low
load for optimum efficiency. In CCM the converter operates
as a synchronous rectifier. In DEM the low-side MOSFET
stays off, blocking negative current flow from the output
inductor.
Pinout
ISL6268 (16 LD SSOP)
Features
? High performance R 3 technology
? Fast transient response
? ±1% regulation accuracy: -10°C to +100°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
? Diode emulation mode for increased light load efficiency
? Programmable PWM frequency: 200kHz to 600kHz
? Pre-biased output start-up capability
? Integrated MOSFET drivers and bootstrap diode
? Internal digital soft-start
? Power good monitor
? 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 plus anneal available (RoHS compliant)
Applications
? PCI express graphical processing unit
? Auxiliary power rail
? VRM
? Network adapter
Ordering Information
TOP VIEW
PART
PART
PKG.
NUMBER
MARKING TEMP (°C)
PACKAGE
DWG. #
PHASE 1
PGOOD 2
16 UG
15 BOOT
ISL6268CAZ
(Note)
6268CAZ
-10 to +100 16 Ld QSOP M16.15A
(Pb-free)
VIN 3
VCC 4
14 PVCC
13 LG
ISL6268CAZ-T 6268CAZ
(Note)
16 Ld QSOP Tape and
Reel (Pb-free)
M16.15A
EN 5
COMP 6
FB 7
GND 8
1
12 PGND
11 ISEN
10 VO
9 FSET
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.
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. 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 |
参数描述 |
|---|---|
| ISL6268CAZ-T | 功能描述:IC REG CTRLR BUCK PWM 16-QSOP 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) |
| ISL6268EVAL1Z | 功能描述:EVALUATION BOARD FOR ISL6268 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:Robust Ripple Regulator™ (R³) 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 |
| ISL6269 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High-Performance Notebook PWM Controller with Audio-Frequency Clamp |
| ISL6269_06 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High-Performance Notebook PWM Controller with Bias Regulator and Audio-Frequency Clamp |
| ISL6269A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High-Performance Notebook PWM Controller |
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