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参数资料
| 型号： | ISL6440IA |
| 厂商： | Intersil |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 24-QSOP |
| 标准包装： | 1,000 |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 340kHz |
| 占空比： | 93% |
| 电源电压： | 4.5 V ~ 24 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： | 24-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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ISL6440
Data Sheet
October 4, 2005
FN9040.2
300kHz Dual, 180° Out-of-Phase, Step-
Down PWM Controller
The ISL6440 is a high-performance, dual-output PWM
controller optimized for converting wall adapter, battery or
network intermediate bus DC input supplies into the system
supply voltages required for a wide variety of applications.
Each output is adjustable down to 0.8V. The two PWMs are
synchronized 180 o out of phase reducing the RMS input
current and ripple voltage.
The ISL6440 incorporates several protection features. An
adjustable overcurrent protection circuit monitors the output
current by sensing the voltage drop across the lower
MOSFET. Hiccup mode overcurrent operation protects the
DC/DC components from damage during output
overload/short circuit conditions. Each PWM has an
independent logic-level shutdown input (SD1 and SD2).
A single PGOOD signal is issued when soft-start is complete
on both PWM controllers and their outputs are within 10% of
the set point. Thermal shutdown circuitry turns off the device
if the junction temperature exceeds +150°C.
Features
? Wide Input Supply Voltage Range
- 5.6V to 24V
- 4.5V to 5.6V
? Two Independently Programmable Output Voltages
? Switching Frequency . . . . . . . . . . . . . . . . . . . . . . . 300kHz
? Out of Phase PWM Controller Operation
- Reduces Required Input Capacitance and Power
Supply Induced Loads
? No External Current Sense Resistor
- Uses Lower MOSFET’s r DS(ON)
? Programmable Soft-Start
? Extensive Circuit Protection Functions
- PGOOD
- UVLO
- Overcurrent
- Overtemperature
- Independent Shutdown for Both PWMs
Pinout
ISL6440 (QSOP)
TOP VIEW
? Excellent Dynamic Response
- Voltage Feed-Forward with Current Mode Control
? Pb-Free Plus Anneal Available (RoHS Compliant)
1 LGATE2
2 BOOT2
3 UGATE2
4 PHASE2
5 ISEN2
6 PGOOD
7 VCC5
8 SD2
9 SS2
10 OCSET2
11 FB2
12 VIN
LGATE1 24
BOOT1 23
UGATE1 22
PHASE1 21
ISEN1 20
PGND 19
SD1 18
SS1 17
SGND 16
OCSET1 15
FB1 14
BIAS 13
Applications
? Power Supplies with Two Outputs
? xDSL Modems/Routers
? DSP, ASIC, and FPGA Power Supplies
? Set-Top Boxes
? Dual Output Supplies for DSP, Memory, Logic, μ P Core
and I/O
? Telecom Systems
Ordering Information
TEMP.
PART
PART
RANGE
PKG.
NUMBER
MARKING
(°C)
PACKAGE
DWG. #
ISL6440IA
ISL6440IAZ
(See Note)
ISL6440IA
ISL6440IAZ
-40 to 85
-40 to 85
24 Ld QSOP M24.15
24 Ld QSOP M24.15
(Pb-free)
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.
Add “-T” or “-TK” suffix for tape and reel.
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. 2005. 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 |
|---|---|
| ISL6440IA-T | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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 ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6440IA-TK | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 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 ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6440IAZ | 功能描述:电流型 PWM 控制器 DUAL PWM CONTRLR+LIN EAR CONTRLR 300KHZ RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6440IAZ-T | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5 |
| ISL6440IAZ-T7 | 功能描述:电流型 PWM 控制器 LEAD-FREE DUAL PWM CONTROLLER + LINEAR CONTROLLER, 300KHZ, 1 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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