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参数资料
| 型号： | MAX8564EUB+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 12/15页 |
| 文件大小： | 266K |
| 描述： | IC REG CTRLR DUAL POS ADJ 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 类型： | 正，可调式 |
| 输出数： | 2 |
| 输出电压： | 0.5 V ~ 1.8 V，0.5 V ~ 3.3 V |
| 电流 - 电源： | 660µA |
| 输入电压： | 5V，12V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
For the best transient response in applications with
large step loads (see the Input and Output Capacitor
Selection section for output capacitance requirements),
use the following equations to select the compensation
components:
where C
OUT
is the output capacitance and R
ESR
is the
ESR of C
OUT
.
To use a low-cost ceramic capacitor (see the Input and
Output Capacitor Selection section for load-transient
response characteristics), use the following equations
to select the compensation components:
Example
OUTPUT 1 of Figure 1 is used in this example. Table 1
shows the values required to calculate the compensa-
tion. The values were taken from the appropriate data
sheets and Figure 1.
PC Board Layout Guidelines
Due to the high-current paths and tight output accuracy
required by most applications, careful PC board layout is
required. An evaluation kit (MAX8563EVKIT) is available
to speed design.
It is important to keep all traces as short as possible to
maximize the high-current trace dimensions to reduce the
effect of undesirable parasitic inductance. The MOSFET
dissipates a fair amount of heat due to the high currents
involved, especially during large input-to-output voltage
differences. To dissipate the heat generated by the
MOSFET, make power traces very wide with a large
amount of copper area. An efficient way to achieve good
power dissipation on a surface-mount package is to lay
out copper areas directly under the MOSFET package on
multiple layers and connect the areas through vias. Use a
ground plane to minimize impedance and inductance. In
addition to the usual high-power considerations, here are
four tips to ensure high output accuracy:
" Ensure that the feedback connection to C
OUT_
is
short and direct.
" Place the feedback resistors next to the FB pin.
" Place R
C
and C
C
next to the DRV_ pin.
" Ensure FB_ and DRV_ traces are away from noisy
sources to ensure tight accuracy.
g
S x
A
A
S
C
x
V x
F x
S x
S x
m
S x
V
A
pF
F use F
C MAX
C
(
)
.
.
.
.
.
.
.
. . .
.
,
.
=
=
=
+
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
(
)
=
30
1 5
8 8
12 4
0 16
1 5
100
12 4
12 4
18
1
12 4
1 5
1 5
2500
0 90
1
2
?/DIV>
?/DIV>
?/DIV>
?/DIV>
RR
x
V x
F x
S x
m
F
S x
V
A
use
C
.
.
. . .
. ,
.
=
+
(
)
+
(
)
=
59
1 5
100
12 4
18
1
1 12 4
1 5
1 5
599 4
620
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
C
C
x g
g
x V
I
C
R
x
C
C x g
C
OUT
C MAX
C MAX
OUT
OUT MAX
ISS
C
OUT
MAX
(
)
(
)
_
=
+
(
)
=
15
C
V
C
g
g
R
g
V
I
C
R
V
x C
g
x R
C x g
V
I
C
OUT
OUT
C MAX
C MAX
ESR
C MAX
OUT OUT MAX
ISS
C
OUT
OUT C MAX
ESR
C
C MAX
OUT
OUT
.
(
)
(
)
(
)
_
(
)
(
)
_
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
(
)
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
+
(
)
=
?/DIV>
+
(
)
?/DIV>
+
0 16
1
59
1
2
MAX
MAX
(
)
?%, Ultra-Low Output Voltage, Dual and Triple
Linear n-FET Controllers
12 ______________________________________________________________________________________
Table 1. Parameters Required to
Calculate Compensation
PARAMETER CONDITIONS
VALUE
UNITS
M FET
V
DS
= 1V
2500
pF
M FET F
IDFS = 8.8A
30
S
V
OUT1
Figure 1
1.5
V
I
OUT_MAX
Figure 1
1.5
A
C
OUT1
Figure 1
100
礔
R
ESR
Figure 1
18
m?/DIV>
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8564EUB+ | 功能描述:低压差控制器 - LDO Dual & Triple Linear n-FET Controller RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MAX8564EUB+T | 功能描述:低压差控制器 - LDO Dual & Triple Linear n-FET Controller RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MAX8564EUB-T | 功能描述:低压差控制器 - LDO RoHS:否 制造商:Micrel 最大输入电压:5.5 V 输出电压:Adjustable 输出电流:10 mA 负载调节: 输出类型:Adjustable, Fixed 输出端数量:1 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-6 |
| MAX8564EVKIT | 制造商:Maxim Integrated Products 功能描述:1%, ULTRA-LOW OUTPUT-VOLTAGE, DUAL AND TRIPL - Bulk |
| MAX8566ETJ | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
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