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参数资料
| 型号： | ISL6413IRZ |
| 厂商： | Intersil |
| 文件页数： | 11/12页 |
| 文件大小： | 325K |
| 描述： | IC REG TRPL BCK/LINEAR 24-QFN |
| 标准包装： | 75 |
| 拓扑： | 降压（降压）同步（1），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 3 |
| 频率 - 开关： | 750kHz |
| 电压/电流 - 输出 1： | 1.8V，400mA |
| 电压/电流 - 输出 2： | 2.84V，300mA |
| 电压/电流 - 输出 3： | 2.85V，200mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘 |
| 供应商设备封装： | 24-QFN（4x4） |
11
In order to avoid saturation of the inductor, the inductor
should be rated at least for the maximum output current plus
the inductor ripple current.
OUTPUT CAPACITOR SELECTION
For best performance, a low ESR output capacitor is
needed. If an output capacitor is selected with an ESR value
d120m&, its RMS ripple current rating will always meet the
application requirements. The RMS ripple current is
calculated as:
The overall output ripple voltage is the sum of the voltage
spike caused by the output capacitor ESR plus the voltage
ripple caused by charge and discharging the output
capacitor:
Where the highest output voltage ripple occurs at the highest
input voltage VI.
INPUT CAPACITOR SELECTION
Because of the nature of the buck converter having a
pulsating input current, a low ESR input capacitor is required
for best input voltage filtering and minimizing the
interference with other circuits caused by high input voltage
spikes.
The input capacitor should have a minimum value of 10礔
and can be increased without any limit for better input
voltage filtering. The input capacitor should be rated for the
maximum input ripple current calculated as:
The worst case RMS ripple current occurs at D = 0.5.
Ceramic capacitors show good performance because of
their low ESR value, and because they are less sensitive to
voltage transients, compared to tantalum capacitors.
Place the input capacitor as close as possible to the input pin
of the IC for best performance.
Layout Considerations
As for all switching power supplies, the layout is an important
step in the design especially at high peak currents and
switching frequencies. If the layout is not carefully done, the
regulator might show stability problems as well as EMI
problems. Therefore, use wide and short traces for the main
current paths. The input capacitor should be placed as close
as possible to the IC pins as well as the inductor and output
capacitor. Use a common ground node to minimize the
effects of ground noise.
Allocate two board levels as ground planes, with many vias
between them to create a low impedance, high-frequency
plane. Tie all the device ground pins through multiple vias
each to this ground plane, as close to the device as possible.
Also tie the exposed pad on the bottom of the device to this
ground plane.
Refer to application note AN1081.
TABLE 1. RECOMMENDED INDUCTORS
OUTPUT
CURRENT
INDUCTOR
VALUE
VENDOR PART #
COMMENTS
0mA to
600mA
10礖
Coilcraft DO3316P-103
Coilcraft DT3316P-103
Sumida CDR63B-100
Sumida CDRH5D28-100
High
Efficiency
Coilcraft DO1608C-100
Sumida CDRH4D28-100
Smallest
Solution
0mA to
300mA
10礖
Coilcraft DS1608C-103 High
Efficiency
Murata LQH4C100K04 Smallest
Solution
TABLE 2. RECOMMENDED CAPACITORS
CAPACITOR
VALUE
ESR/m&
VENDOR PART #
COMMENTS
10礔
50
Taiyo Yuden
JMK316BJ106KL
Ceramic
47礔
100
Sanyo 6TPA47M
POSCAP
68礔
100
Sprague
594D686X0010C2T
Tantalum
I
RMS C
( )
O
V
O
1
V
O
V
I
------- -
L f
?/DIV>
-----------------
1
2
3
?/DIV>
---------------- -
?/DIV>
?/DIV>
=
V
O
V
O
1
V
O
V
I
------- -
L f
?/DIV>
-----------------
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
8 C
O
f
?/DIV>
?/DIV>
------------------------- - ESR
+
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
I
RMS
I
O max
(
)
V
O
V
I
------- -
1
V
O
V
I
------- -
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
ISL6413
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相关代理商/技术参数 |
参数描述 |
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| ISL6413IRZ-TK | 功能描述:IC REG TRPL BCK/LINEAR 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| ISL6414EVAL1 | 功能描述:EVAL BOARD 1 FOR ISL6414 RoHS:否 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 |
| ISL6414IR | 制造商:Rochester Electronics LLC 功能描述:TRIPLE OUTPUT LOW DROPOUT LINEAR REG. WITH FAULT PIN MODIFIC - Bulk 制造商:Intersil Corporation 功能描述: |
| ISL6414IRZ | 功能描述:低压差稳压器 - LDO VER OF ISL6414IR 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 |
| ISL6414IRZ-TK | 功能描述:低压差稳压器 - LDO VER OF ISL6414IR-TK 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 |
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