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參數(shù)資料
| 型號(hào)： | NCP5426SN13T1G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | LDO Regulator/Vibration Motor Driver |
| 中文描述： | 1.3 V FIXED POSITIVE LDO REGULATOR, PDSO5 |
| 封裝： | LEAD FREE, TSOP-5 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 90K |
| 代理商： | NCP5426SN13T1G |
NCP5426
http://onsemi.com
6
APPLICATIONS INFORMATION
The following description will assist the system designer
to correctly use the NCP5426 in an application. The
NCP5426 is designed specifically for use with inductive
loads, typically Vibration Motors. The LDO is capable of
using ceramic and tantalum capacitors. Please refer to
Figure 13 for a typical system schematic.
Input Decoupling
A capacitor, C1, is necessary on the input for normal
operation. A ceramic or tantalum capacitor with a minimum
value of 1.0 F is required. Higher values of capacitance and
lower ESR will improve the overall line and load transient
response.
Output Decoupling
A capacitor, C2, is required for the NCP5426 to operate
normally. A ceramic or tantalum capacitor will suffice. The
selection of the output capacitor is dependant upon several
factors: output current, power up and down delays, inductive
kickback during power up and down. It is recommended the
output capacitor be as close to the output pin and ground pin
for the best system response.
Enable Pin
The enable pin will turn on or off the regulator. The enable
pin is active high. The internal input resistance of the enable
pin is high which will keep the current very low when the pin
is pulled high. A low threshold voltage permits the
NCP5426 to operate directly from microprocessors or
controllers.
Thermal
As power across the NCP5426 increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material and the ambient temperature
effect the rate of junction temperature rise for the part. This
is stating that when the NCP5426 has good thermal
conductivity through the PCB, the junction temperature will
be relatively low with high power dissipation applications.
The maximum dissipation the package can handle is
given by:
TJ(max)
PD
TA
RJA
T
J
is not recommended to exceed 125
°
C. The NCP5426
can dissipate up to 400 mW @ 25
°
C. The power dissipated
by the NCP5426 can be calculated from the following
equation:
[Vin* IGND(Iout)]
or
Ptot
[Vin
Vout] * Iout
VinMAX
Ptot
Vout*Iout
IGND
Iout
If a 150 mA output current is needed then the ground
current is extracted from the data sheet curves: 200 A @
150 mA. For an NCP5426SN18T1 (1.8 V), the maximum
input voltage will then be 4.4 V, good for a 1 Cell Liion
battery.
Hints
Please be sure the V
in
and GND lines are sufficiently wide.
When the impedance of these lines is high, there is a chance
to pick up noise or cause the regulator to malfunction. Set
external components, especially the output capacitor, as
close as possible to the circuit, and make leads as short as
possible.
Figure 13. Typical Applications Circuit
for Driving a Vibration Motor
C2
C1
Enable
GND
N/C
V
in
V
out
Vibration
Motor
V
CC
OFF
ON
V
CCON
V
out
Resistive Load
V
out
Motor Load
V
CCOFF
V
CC
Figure 14. Timing Diagram
V
CCHYST
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCP5426SN13T2 | 功能描述:低壓差穩(wěn)壓器 - LDO 1.3V 150mA LDO REG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| NCP5426SN13T2G | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:LDO Regulator/Vibration Motor Driver |
| NCP54XX | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators |
| NCP5500 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:500 mA Linear Regulator |
| NCP5500DADJR2G | 功能描述:低壓差穩(wěn)壓器 - LDO ANA LDO RG 500mA ADJ RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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