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参数资料
| 型号： | ISL9001IRRZ-T |
| 厂商： | Intersil |
| 文件页数： | 9/11页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.6V .3A 8-DFN |
| 标准包装： | 6,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.6V |
| 输入电压： | 最高 6.5V |
| 电压 - 压降（标准）： | 0.25V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 电流 - 限制（最小）： | 350mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x3） |
| 包装： | 带卷 (TR) |
ISL9001
Block Diagram
VIN
VO
UVLO
CONTROL
LOGIC
SHORT CIRCUIT,
THERMAL PROTECTION,
SOFT-START
+
-
EN
+
1.0V
-
VO
GND
POR
BANDGAP AND
TEMPERATURE
SENSOR
VOLTAGE AND
REFERENCE
GENERATOR
CBYP
1.0V
0.94V
0.9V
CPOR
POR
DELAY
GND
Functional Description
The ISL9001 contains all circuitry required to implement a
high performance LDO. High performance is achieved
through a circuit that delivers fast transient response to
varying load conditions. In a quiescent condition, the
ISL9001 adjusts its biasing to achieve the lowest standby
current consumption.
The device also integrates current limit protection, smart
thermal shutdown protection, and soft-start. Smart Thermal
shutdown protects the device against overheating.
Power Control
The ISL9001 has an enable pin (EN) to control power to the
LDO output. When EN is low, the device is in shutdown
mode. During this condition, all on-chip circuits are off, and
the device draws minimum current, typically less than 0.1μA.
When the enable pin is asserted, the device first polls the
output of the UVLO detector to ensure that VIN voltage is at
least about 2.1V. Once verified, the device initiates a start-up
sequence. During the start-up sequence, trim settings are
first read and latched. Then, sequentially, the bandgap,
reference voltage and current generation circuitry power-up.
Once the references are stable, a fast-start circuit quickly
charges the external reference bypass capacitor (connected
to the CBYP pin) to the proper operating voltage. Once the
bypass capacitor has been charged, the LDO powers up.
9
During operation, whenever the VIN voltage drops below
about 1.84V, the ISL9001 immediately disables the LDO
output. When VIN rises back above 2.1V, the device
re-initiates its start-up sequence and LDO operation will
resume automatically.
Reference Generation
The reference generation circuitry includes a trimmed
bandgap, a trimmed voltage reference divider, a trimmed
current reference generator, and an RC noise filter. The filter
includes the external capacitor connected to the CBYP pin.
A 0.01μF capacitor connected to CBYP implements a 100Hz
lowpass filter, and is recommended for most high
performance applications. For the lowest noise application, a
0.1μF CBYP capacitor should be used. This filters the
reference noise to below the 10Hz to 1kHz frequency band,
which is crucial in many noise-sensitive applications.
The bandgap generates a zero temperature coefficient (TC)
voltage for the reference divider. The reference divider
provides the regulation reference, POR detection thresholds,
and other voltage references required for current generation
and over-temperature detection.
The current generator outputs references required for
adaptive biasing as well as references for LDO output
current limit and thermal shutdown determination.
FN9231.2
March 28, 2008
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| ISL9003A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Low Noise LDO with Low IQ and High PSRR |
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| ISL9003AIEBZ-T | 功能描述:低压差稳压器 - LDO W/ANNEAL SNG LW NOIS EHIPSRRLDO1.50VSC-7 RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| ISL9003AIECZ-T | 功能描述:IC REG LDO 1.8V .15A SC70-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:2,000 系列:- 稳压器拓扑结构:正，可调式 输出电压:1.2 V ~ 5 V 输入电压:2.5 V ~ 7 V 电压 - 压降（标准）:0.24V @ 800mA 稳压器数量:1 电流 - 输出:800mA 电流 - 限制（最小）:1.2A 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-261-5，TO-261AB 供应商设备封装:SOT-223-5 包装:带卷 (TR) 其它名称:*LP3964EMPX-ADJLP3964EMPX-ADJLP3964EMPX-ADJ-NDLP3964EMPX-ADJ/NOPBTR |
| ISL9003AIEFZ-T | 功能描述:IC REG LDO 2.5V .15A SC70-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:2,000 系列:- 稳压器拓扑结构:正，可调式 输出电压:1.2 V ~ 5 V 输入电压:2.5 V ~ 7 V 电压 - 压降（标准）:0.24V @ 800mA 稳压器数量:1 电流 - 输出:800mA 电流 - 限制（最小）:1.2A 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-261-5，TO-261AB 供应商设备封装:SOT-223-5 包装:带卷 (TR) 其它名称:*LP3964EMPX-ADJLP3964EMPX-ADJLP3964EMPX-ADJ-NDLP3964EMPX-ADJ/NOPBTR |
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