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| 型号： | ISL80101AIRAJZ-T |
| 厂商： | Intersil |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1A 10DFN |
| 产品培训模块： | Patient Monitoring and Diagnostic Equipment Solutions |
| 标准包装： | 6,000 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.8 V ~ 5 V |
| 输入电压： | 2.2 V ~ 6 V |
| 电压 - 压降（标准）： | 0.09V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A（最小值） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
ISL80101A
Typical Operating Performance
Unless otherwise noted: V IN = 5V, V OUT = 3.3V, C IN = C OUT = 10μF, T J = +25°C, I L = 0A. (Continued)
1.8
1.6
ENABLE (5V/DIV )
1.4
1.2
SS (1V/DIV)
V OUT (2V/DIV)
1.0
0.8
0.6
0.4
R SET = OPEN
PG (2V/DIV)
TIME (5ms/DIV)
0.2
0
-40
R SET = 25.5k ?
10
60
110
TEMPERATURE (°C)
FIGURE 8. ENABLE START-UP
90
FIGURE 9. CURRENT LIMIT vs TEMPERATURE
80
70
60
100mA
0mA
V OUT AT 50mV/DIV
50
40
30
20
I OUT = 1A
10
1000mA
500mA
I OUT = 10mA
0
100
1k
10k
100k
1M
(EQ. 1)
I LIMIT = 1.62 + --------------------------
2.9 × ( 2 × V IN – 1 )
I LIMIT = 1.62 – -----------------------------------------------
R SET ( k Ω )
TIM E (20μs/div)
FIGURE 10. LOAD TRANSIENT RESPONSE
Functional Description
Input Voltage Requirements
ISL80101A is capable of delivering output voltages from 0.8V to
5.0V. Due to the nature of an LDO, V IN must be some margin
higher than V OUT plus dropout at the maximum rated current of
the application if active filtering (PSRR) is expected from V IN to
V OUT . The generous dropout specification of this family of LDOs
allows applications to design for a level of efficiency that can
accommodate profiles smaller than the TO220/263.
Programmable Current Limit
The ISL80101A protects against overcurrent due to short-circuit
and overload conditions applied to the output. When this
happens, the LDO performs as a constant current source. If the
short-circuit or overload condition is removed, the output returns
to normal voltage regulation operation.
The current limit is set at 1.62A by default when the I SET pin is
left floating.
7
FREQUENCY (Hz)
FIGURE 11. PSRR vs FREQUENCY
This limit can be increased by tying a resistor R SET from the I SET pin to
ground. The current limit is determined by R SET as shown in
Equation 1. Do not short this pin to ground. Increasing the
current limit past 1.75A may cause damage to the part and is
highly discouraged.
2.9
R SET ( k Ω )
The current limit can be decreased from the 1.62A default by
tying R SET from the I SET pin to V IN . The current limit is then
determined by both R SET and V IN following Equation 2.
(EQ. 2)
Figure 12 shows the relationship between R SET and the current
limit when R SET is tied from the I SET pin to V IN for various V IN
values.
FN7712.3
September 29, 2011
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL80101EVAL2Z | 功能描述:EVAL BOARD FOR ISL80101 RoHS:是 类别:编程器，开发系统 >> 评估板 - 线性稳压器 (LDO) 系列:* 产品变化通告:1Q2012 Discontinuation 30/Mar/2012 设计资源:NCP590MNDPTAGEVB Gerber Files 标准包装:1 系列:- 每 IC 通道数:2 - 双 输出电压:1.8V，2.8V 电流 - 输出:300mA 输入电压:2.1 ~ 5.5 V 稳压器类型:正，固定式 工作温度:-40°C ~ 85°C 板类型:完全填充 已供物品:板 已用 IC / 零件:NCP590MNDP 其它名称:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
| ISL80101IR08Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Performance 1A LDO |
| ISL80101IR08Z-T | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Performance 1A LDO |
| ISL80101IR12Z | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Performance 1A LDO |
| ISL80101IR12Z-T | 制造商:Intersil Corporation 功能描述:- Tape and Reel |
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