参数资料
| 型号： | ISL95870BIRZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/28页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM 1PHASE GPU 20QFN |
| 标准包装： | 6,000 |
| 应用： | 控制器，GPU 内核电源 |
| 输入电压： | 3.3 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.5 V ~ 5 V |
| 工作温度： | -40°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 带卷 (TR) |
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PWM DC/DC Controller with VID Inputs for Portable
GPU Core-Voltage Regulator
ISL95870, ISL95870A, ISL95870B
The ISL95870, ISL95870A, ISL95870B ICs are Single-Phase
Synchronous-Buck PWM regulators featuring Intersil’s
proprietary R 4 Technology?. The wide 3.3V to 25V input
voltage range is ideal for systems that run on battery or
AC-adapter power sources. The ISL95870A and ISL95870B
are low-cost solutions for applications requiring dynamically
selected slew-rate controlled output voltages. The soft-start
and dynamic setpoint slew-rates are capacitor programmed.
Voltage identification logic-inputs select four (ISL95870A,
ISL95870B) resistor-programmed setpoint reference voltages
that directly set the output voltage of the converter between
0.5V and 1.5V, and up to 5V with a feedback voltage divider.
Compared with R 3 modulator, the R 4 modulator has
equivalent light-load efficiency, faster transient performance,
accurately regulated frequency control and all internal
compensation. These updates, together with integrated
MOSFET drivers and schottky bootstrap diode, allow for a
high-performance regulator that is highly compact and needs
few external components. The differential remote sensing for
output voltage and selectable switching frequency are another
two new functions. For maximum efficiency, the converter
automatically enters diode-emulation mode (DEM) during
light-load conditions such as system standby.
Features
? Input Voltage Range: 3.3V to 25V
? Output Voltage Range: 0.5V to 5V
? Precision Regulation
- Proprietary R 4 ? Frequency Control Loop
- ±0.5% System Accuracy Over -10°C to +100°C
? Optimal Transient Response
- Intersil’s R 4 ? Modulator Technology
? Output Remote Sense
? Extremely Flexible Output Voltage Programmability
- 2-Bit VID Selects Four Independent Setpoint Voltages for
ISL95870B
- 2-Bit VID Selects Four Dependent or Three Independent
Setpoint Voltages for ISL95870A
- Simple Resistor Programming of Setpoint Voltages
? Selectable 300kHz, 500kHz, 600kHz or 1MHz PWM
Frequency in Continuous Conduction
? Automatic Diode Emulation Mode for Highest Efficiency
? Power-Good Monitor for Soft-Start and Fault Detection
Applications
? Mobile PC Graphical Processing Unit VCC Rail
? Mobile PC I/O Controller Hub (ICH) VCC Rail
? Mobile PC Memory Controller Hub (GMCH) VCC Rail
+5V
R VCC
C PVCC
C VCC
V IN
3.3V TO 25V
CIN
RTN1
R FB1
GPIO
1
2
3
GND
RTN
EN
BOOT
UGATE
PHASE
12
11
10
Q HS
L O
V OUT
0.5V TO 5V
4
SREF
PGOOD
9
Q LS
CO
C BOOT
C SEN
R O
RTN1
R OFS
R FB
0
FIGURE 1. ISL95870 APPLICATION SCHEMATIC WITH ONE OUTPUT VOLTAGE SETPOINT AND DCR CURRENT SENSE
December 2, 2013
FN6899.1
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 LLC 2009, 2013. All Rights Reserved
Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries.
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 |
|---|---|
| ISL95870HRUZ-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 |
| ISL95870IRUZ-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 |
| ISL95871CEVAL3Z | 功能描述:EVAL BOARD3 FOR ISL95871C 50QFN RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| ISL95871CHRZ | 功能描述:IC SMBUS BATT CHRGR LIION 50QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| ISL95871CHRZ-T | 功能描述:IC SMBUS BATT CHRGR LIION 50QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
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