参数资料
| 型号： | ISL95872HRUZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/17页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16UTQFN |
| 标准包装： | 3,000 |
| PWM 型： | R4 |
| 输出数： | 1 |
| 频率 - 最大： | 300kHz |
| 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： | -10°C ~ 100°C |
| 封装/外壳： | 16-UFQFN |
| 包装： | 带卷 (TR) |
Buck PWM Controller with Internal Compensation and
External Reference Tracking
ISL95872
The ISL95872 is a Single-Phase Synchronous-Buck PWM
controller featuring Intersil’s proprietary R4? Technology. The
R4? modulator has integrated compensation, fast transient
performance, accurate switching frequency control, and
excellent light-load efficiency. These technology advances,
together with integrated MOSFET drivers and a schottky
bootstrap diode, allow for a high performance regulator that is
highly compact and needs few external components.
Differential remote sensing of the output voltage is an
additional feature. For maximum efficiency, the converter
automatically enters diode-emulation mode (DEM) during
light-load conditions such as system standby.
The ISL95872 accepts a wide 3.3V to 25V input voltage range,
making it ideal for systems that run on battery or AC-adapter
power sources. It also is a low-cost solution for applications
requiring tracking of an external reference voltage during soft-
start. When the external reference level meets the internal
reference voltage, the ISL95872 switches from the external
reference to the internal reference. The external reference is
only used during soft-start.
R VCC
+5V
Features
? External Reference Tracking
? Intersil’s R4? Modulator Technology
- Internal Compensation
- Fast, Optimal Transient Response
? Input Voltage Range: 3.3V to 25V
? Output Voltage Range: 0.5V to 3.3V
? Precision Voltage Regulation
- ±0.5% System Accuracy Over -10°C to +100°C
? Output Voltage Remote Sense
? Fixed 300kHz PWM Frequency in Continuous Conduction
- Proprietary Frequency Control Loop
? Automatic Diode Emulation Mode for Highest Efficiency
? Power-Good Monitor for Soft-Start and Fault Detection
Applications
? Compact Buck Regulators Requiring External Tracking
C PVCC
C VCC
V IN
3.3V TO 25V
CIN
RTN1
R FB1
GPIO
1
2
3
4
GND
RTN
EN
REFIN
BOOT
UGATE
PHASE
PGOOD
12
11
10
9
Q HS
Q LS
L O
V OUT
0.5V TO 3.3V
CO
C BOOT
C SEN
R O
RTN1
External
Reference
Voltage
R OFS
R FB
0
FIGURE 1. ISL95872 APPLICATION SCHEMATIC WITH DCR CURRENT SENSE
January 26, 2012
FN7974.0
1
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. 2012. 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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| ISL95873HRUZ-T | 功能描述:电流型 PWM 控制器 2-Bit PWM GPU Controller for Toshiba. Spin of ISL95872; 2.6 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 |
| ISL95874HRUZ-T | 功能描述:电流型 PWM 控制器 0/2 BIT PWM GPU CONTLR FOR NOTEBOOK 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 |
| ISL95874IRUZ-T | 功能描述:电流型 PWM 控制器 0/2 BIT PWM GPU CONTLR FOR NOTEBOOK 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 |
| ISL95875HRUZ-T | 功能描述:电流型 PWM 控制器 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 |
| ISL95875IRUZ-T | 功能描述:电流型 PWM 控制器 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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