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參數(shù)資料
| 型號： | ZLDO485T8 |
| 廠商： | ZETEX PLC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Circular Connector; Body Material:Thermoplastic; Series:C016; No. of Contacts:3; Connecting Termination:Screw; Circular Shell Style:Cable Plug; Features:Strain Relief with Clamping Ring RoHS Compliant: Yes |
| 中文描述： | 4.85 V FIXED POSITIVE LDO REGULATOR, 0.2 V DROPOUT, PDSO8 |
| 封裝： | SMT-8 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 114K |
| 代理商： | ZLDO485T8 |
ZLDO485
PIN DEFINITIONS
Pin 1
LBF - Low Battery Flag. An open collector
NPN output which pulls low on failing input
supply.
Pin 2
SC - Shutdown Control. This high
impedance logic compatible input disables the
regulator when taken high. It includes a diode
wired to Vin and so will pass current if taken more
than 0.5V above Vin.
Pin 3
Vin - Voltage Input. The power supply to
the regulator. The permissible input voltage
range is -0.3 to 20V. An input capacitor is not
mandatory but will be useful in reducing the
coupling of noise from input to output and
minimising the effect of sudden changes in load
current on the input voltage.
Pin 4
N/C - Not Connected. Not internally
connected and so can be left open or wired to any
pin without affecting the performance of the
regulator.
Pin 5
Vout - Voltage Output. The output of the
regulator. An output capacitor of 1uF or greater
and having low ESR should be wired in close
proximity to the regulator to ensure stability for
all loads.
Pin 6
D/C - Do Not Connect. This pin is wired to
an internal circuit node of the regulator. No
external connection should be made to this pin.
Pin 7
Gnd - Ground. The ground connection of
the regulator against which the output voltage is
referenced.
Pin 8
Spg - Shaping. The shaping node for
the error amplifier of the regulator. A capacitor
of 10pF wired from this pin to the output pin
(pin 5) gives optimum stability. Improved AC
can be achieved by reducing the value of this
capacitor but stability may be impaired for
some load conditions.
FUNCTIONAL DESCRIPTION
The ZLDO is a high performance, ultra low
dropout, low quiescent regulator. Available in
SM8 surface mount packaging, the device is able
to dissipate 2W(note 1) allowing complete design
flexibility with an input span upto 20V and 300mA
output current. The device quiescent is 1mA (typ)
at 300mA load current. A low battery comparator
signifies impending battery failure, whilst a
shutdown function reduces quiescent current to
a mere 11
μ
A (typ). A precision bandgap
reference gives
±
2.5% output tolerance and
good temperature characteristics over the range
-40 to +85°C. AC performance is enhanced via the
use of a small external capacitor.
NOTES.
1.
Maximum power dissipation of the device is calculated assuming the package is mounted on a PCB
measuring 2 inches square.
2
Output voltage temperature coefficient is calculated as:-
V
O
change x
1000000
V
O
xtemperature change
3
. Dropout voltage is defined as the input to output voltage differential at which the circuit ceases to
regulate. The value is measured when the output voltage has dropped by 100mV from V
out
measured
at the nominal input V
in
= V
out
+ 1V
4.
Guaranteed by design.
4-73
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZLDO485T8TA | 功能描述:低壓差穩(wěn)壓器 - LDO 4.85V Ultra low Dropout Regulator 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 |
| ZLDO485T8TA-CUT TAPE | 制造商:DIODES 功能描述:ZLDO485 Series 4.85 V 300 mA Ultra Low Dropout Regulator Surface Mount - SM-8 |
| ZLDO485T8TC | 功能描述:IC REG LDO 4.85V .3A SOT-223-8 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3.8V 輸入電壓:最高 16V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.3V @ 80mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:80mA 電流 - 限制（最?。?- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:帶卷 (TR) 其它名稱:MIC5203-3.8BM5TRMIC5203-3.8BM5TR-ND |
| ZLDO500 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:5.0 VOLT ULTRA LOW DROPOUT REGULATOR |
| ZLDO500T8 | 制造商:Diodes Incorporated 功能描述:IC V REG LDO +5.V SMD SOIC8 500 制造商:Diodes Incorporated 功能描述:IC, V REG LDO +5.V, SMD, SOIC8, 500 制造商:DIODES 功能描述:IC, V REG LDO +5.V, SMD, SOIC8, 500, Primary Input Voltage:6V, Output Voltage Fi 制造商:Diodes Incorporated 功能描述:IC, V REG LDO +5.V, SMD, SOIC8, 500, Primary Input Voltage:6V, Output Voltage Fixed:5V, Dropout Voltage Vdo:30mV, Voltage Regulator Case Style:SOIC, No. of Pins:8, Output Current:100mA, Operating Temperature Min:-40C, Operating , RoHS Compliant: Yes |
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