参数资料
| 型号： | ISL6545IBZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 8-SOIC |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 100% |
| 电源电压： | 4.5 V ~ 14.4 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 ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 标准包装 |
| 产品目录页面： | 1243 (CN2011-ZH PDF) |
| 其它名称： | ISL6545IBZ-TDKR |
ISL6545, ISL6545A
Data Sheet
March 3, 2011
FN6305.6
5V or 12V Single Synchronous Buck
Pulse-Width Modulation (PWM) Controller
The ISL6545, ISL6545A makes simple work out of
implementing a complete control and protection scheme for a
DC/DC stepdown converter driving N-Channel MOSFETs in a
synchronous buck topology. Since it can work with either 5V or
12V supplies, this one IC can be used in a wide variety of
applications within a system. The ISL6545, ISL6545A
(hereafter referred to as “ISL6545x”, except as needed)
integrates the control, gate drivers, output adjustment,
monitoring and protection functions into a single 8 Ld SOIC or
10 Ld DFN package.
The ISL6545x provides single feedback loop, voltage-mode
control with fast transient response. The output voltage can be
precisely regulated to as low as 0.6V, with a maximum
tolerance of ±1.0% over-temperature and line voltage
variations. A selectable fixed frequency oscillator (ISL6545 for
300kHz; ISL6545A for 600kHz) reduces design complexity,
while balancing typical application cost and efficiency.
The error amplifier features a 20MHz gain-bandwidth
product and 9V/μs slew rate which enables high converter
bandwidth for fast transient performance. The resulting
PWM duty cycles range from 0% to 100%.
Protection from overcurrent conditions is provided by
monitoring the r DS(ON) of the lower MOSFET to inhibit PWM
operation appropriately. This approach simplifies the
implementation and improves efficiency by eliminating the
need for a current sense resistor.
Pinout
ISL6545, ISL6545A
(8 LD SOIC)
TOP VIEW
Features
? Operates from +5V or +12V Supply Voltage (for bias)
- 1.0V to 12V V IN Input Range (up to 20V possible with
restrictions; see Input Voltage Considerations)
- 0.6V to V IN Output Range
- Integrated Gate Drivers use V CC (5V to 12V)
- 0.6V Internal Reference; ±1.0% tolerance
? Simple Single-Loop Control Design
- Voltage-Mode PWM Control
- Drives N-Channel MOSFETs
- Traditional Dual Edge Modulator
? Fast Transient Response
- High-Bandwidth Error Amplifier
- Full 0% to 100% Duty Cycle
? Lossless, Programmable Overcurrent Protection
- Uses Lower MOSFET’s r DS(ON)
? Small Converter Size in 8 Ld SOIC or 10 Ld DFN
- 300kHz or 600kHz Fixed Frequency Oscillator
- Fixed Internal Soft-Start, Capable into a Pre-biased
Load
- Integrated Boot Diode
- Enable/Shutdown Function on COMP/SD Pin
- Output Current Sourcing and Sinking
? Pb-Free (RoHS Compliant)
Applications
? Power Supplies for Microprocessors or Peripherals
- PCs, Embedded Controllers, Memory Supplies
- DSP and Core Communications Processor Supplies
? Subsystem Power Supplies
BOOT 1
UGATE 2
GND 3
LGATE/OCSET 4
8 PHASE
7 COMP/SD
6 FB
5 VCC
- PCI, AGP; Graphics Cards; Digital TV
- SSTL-2 and DDR/DDR2/DDR3 SDRAM Bus
Termination Supply
? Cable Modems, Set Top Boxes, and DSL Modems
? Industrial Power Supplies; General Purpose Supplies
ISL6545, ISL6545A
(10 LD 3x3 DFN)
TOP VIEW
? 5V or 12V-Input DC/DC Regulators
? Low-Voltage Distributed Power Supplies
BOOT
1
10 PHASE
UGATE
2
9
COMP/SD
N/C
GND
3
4
GND
8
7
FB
N/C
LGATE/OCSET
5
1
6 VCC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2006, 2007, 2009, 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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| ISL6545IRZ | 功能描述:IC REG CTRLR BUCK PWM VM 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 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) |
| ISL6545IRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 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) |
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