参数资料
| 型号： | ISL9021IRUYZ-T |
| 厂商： | Intersil |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 0.9V .25A 6UTDFN |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 0.9V |
| 输入电压： | 1.5 V ~ 5.5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 250mA（最小） |
| 电流 - 限制（最小）： | 260mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-UFDFN |
| 供应商设备封装： | 6-UTDFN（1.6x1.6） |
| 包装： | 带卷 (TR) |
ISL9021
Functional Description
The ISL9021 is a high performance low-dropout regulator
(LDO) with 250mA sourcing capability. The extra low ground
current makes this part a good choice for handheld product
applications. The device also incorporates overcurrent,
thermal shutdown, reverse current protections, and soft-start
features.
Thermal shutdown protects the device against overheating.
Soft-start limits the start-up input current surges. In some
applications, the output voltage may be externally pulled
higher than input, or the input voltage could be connected to
ground, or connected to some voltage lower than the output
side. The ISL9021 features reverse current protection; that
can block the reverse current from output to input.
Enable Control
The ISL9021 has an enable pin. When EN is low, the IC is in
shutdown mode. In this condition, all on-chip circuits are off,
and the device draws minimum current, typically less than
0.1μA(typ). Driving this pin high will turn on the device.
LDO Protections
The ISL9021 offers several protection functions, making it ideal
for use in battery-powered applications.The ISL9021 provides
short-circuit protection by limiting the output current at current
limit of 260mA(min). If the short circuit lasts long enough, the
die temperature increases, and the over-temperature protection
circuit will shut down the output. When the die temperature
reaches about +145°C, thermal protection starts to work with
output being loaded with at least 50mA. Once the die
temperature drops to about +110°C, the LDO will resume
operation beginning with a soft-start.
8
The ISL9021’s reverse current protection is intended to
block reverse conduction if output voltage is higher than
input voltage.
Input and Output Capacitors
The ISL9021 provides a linear regulator that has low
quiescent current, fast transient response, and overall stable
operation across the recommended operating conditions. A
ceramic capacitor (X5R or X7R) with a capacitance of 1μF to
4.7μF with an ESR up to 400m Ω is suitable for the ISL9021
to maintain its output stability. The ground connection of the
output capacitor should be routed directly to the GND pin of
the device, and also placed close to the IC. Similarly for the
input capacitor, usually a 1μF ceramic capacitor (X5R or 7R)
is suitable for most cases, but if a large, fast rising load
transient condition is expected, a higher value input
capacitor may be necessary to achieve satisfactory
performance.
Board Layout Recommendations
A good PCB layout is an important step to achieve good
performance. It is recommended to design the board with
separate ground planes for input and output, and connect
both ground planes at the GND pin of the IC. Consideration
should be taken when placing the components and routing
the trace to minimize the ground impedance, and keep the
parasitic inductance low. Usually the input/output capacitors
should be placed as close to the IC as possible with a good
ground connection.
FN6867.2
January 14, 2010
相关PDF资料 |
PDF描述 |
|---|---|
| ISL9103IRUJZ-T | IC REG BUCK SYNC 2.8V .5A 6UTDFN |
| ISL9104IRUWZ-T7A | IC REG BUCK SYNC 1.2V 0.5A 6TDFN |
| ISL9105IRZ-T | IC REG BUCK SYNC ADJ 0.6A 8DFN |
| ISL9106IRZ | IC REG BUCK SYNC ADJ 1.2A 10DFN |
| ISL9107IRZ-T | IC REG BUCK SYNC ADJ 1.5A 8DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL90460 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Digitally Controlled Potentiometer (XD |
| ISL90460TIE527-TK | 功能描述:IC XDCP 32-TAP 100KOHMS SC70-5 RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:2,500 系列:XDCP™ 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 ±300 ppm/°C 存储器类型:非易失 接口:I²C（设备位址） 电源电压:2.7 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
| ISL90460TIE527Z | 制造商:Intersil Corporation 功能描述:XDCP Pot,2.7-5.5V,3mA,ISL90460TIE527Z |
| ISL90460TIE527Z-TK | 功能描述:IC XDCP 32-TAP 100KOHMS SC70-5 RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:3,000 系列:DPP 接片:32 电阻（欧姆）:10k 电路数:1 温度系数:标准值 300 ppm/°C 存储器类型:非易失 接口:3 线串行（芯片选择，递增，增/减） 电源电压:2.5 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WFDFN 裸露焊盘 供应商设备封装:8-TDFN（2x3） 包装:带卷 (TR) |
| ISL90460TIH527-TK | 功能描述:IC XDCP 32-TAP 100KOHMS SOT23-5 RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数字电位器 系列:XDCP™ 标准包装:2,500 系列:XDCP™ 接片:256 电阻（欧姆）:100k 电路数:1 温度系数:标准值 ±300 ppm/°C 存储器类型:非易失 接口:I²C（设备位址） 电源电压:2.7 V ~ 5.5 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。