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參數(shù)資料
| 型號(hào)： | AS1362-BTTT-26 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Output Current: 300; Output Range: 2.6 |
| 中文描述： | 無(wú)電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護(hù) |
| 封裝： | TSOT23-6 |
| 文件頁(yè)數(shù)： | 10/15頁(yè) |
| 文件大?。?/td> | 730K |
| 代理商： | AS1362-BTTT-26 |
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www.austriamicrosystems.com
Revision 1.03
10 - 15
AS1361/AS1362
Datasheet - Detailed Description
Figure 18. AS1361/AS1362 - Block Diagram
Power-OK
The power-ok circuitry is built around an N-channel MOSFET. The circuitry monitors the output voltage and if the volt-
age goes out of regulation (e.g. during dropout, current limit, or thermal shutdown) pin POK goes low.
The power-OK feature is not active during shutdown and provides a power-on-reset (POR) function that can operate
down to V
IN
= 1V. A capacitor to GND may be added to generate a POR delay.
To obtain a logic-level output, connect a pull-up resistor from pin POK to pin OUT. Larger values for this resistor will
help minimize current consumption; a 100k
Ω
resistor is perfect for most applications
(see Figure 1 on page 1)
.
Current Limit
The AS1361/AS1362 include a current limiting circuitry to monitor and control the P-channel MOSFET pass transis-
tor’s gate voltage, thus limiting the device output current to 270mA (AS1361) and 510mA (AS1362).
Note:
See
Table 4 on page 4
for the recommended min and max current limits. The output can be shorted to ground
indefinitely without causing damage to the device.
Thermal Protection
Integrated thermal protection circuitry limits total power dissipation in the AS1361/AS1362. When the junction temper-
ature (T
J
) exceeds +160oC, the thermal sensor signals the shutdown logic, turning off the P-channel MOSFET pass
transistor and allowing the device to cool down. The thermal sensor turns the pass transistor on again after the
device’s junction temperature drops by 10oC, resulting in a pulsed output during continuous thermal-overload condi-
tions.
Note:
Thermal protection is designed to protect the devices in the event of fault conditions. For continuous operation,
do not exceed the absolute maximum junction temperature rating of +150oC.
Operating Region and Power Dissipation
The AS1361/AS1362 maximum power dissipation is dependant on the thermal resistance of the case and PCB, the
temperature difference between the die junction and T
AMB
, and airflow rate.
Power dissipation across the device is calculated as:
PD = I
OUT
(V
IN
- V
OUT
)
(EQ 1)
AS1361/AS1362
Shutdown and
Power-Down
Control
Thermal
Sensor
OUT
IN
SHDNN
GND
BYPASS
-
+
MOS
Driver w/
I
LIMIT
Error
Amp
POK
+
–
95%
1.25 Reference
and Noise Bypass
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1362-BTTT-27 | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Output Range: 2.7V |
| AS1362-BTTT-28 | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Output Range: 2.8V |
| AS1362-BTTT-285 | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Output Current: 300; Output Range: 2.85 |
| AS1362-BTTT-30 | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Temperature Range: -40 - +85 °C; Dimension: 3 x 3 mm; Miscellaneous: Ultra-Low-Noise, POK; Shutdown: Yes; Output Current: 300mA; Output Range: 3.3V; Supply Voltage: 2,00-5,50 |
| AS1362-BTTT-33 | 300mA 9μVrms, 92dB, POK; Package Type: TSOT23-6; Output Range: 3.3V |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1362-BTTT-26 EB | 制造商:ams 功能描述:Evaluation Board |
| AS1362-BTTT-27 | 功能描述:IC REG LDO 2.7V .3A TSOT23-6 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:2.5V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA（最小值） 電流 - 限制（最小）:360mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細(xì)型，TSOT-23-5 供應(yīng)商設(shè)備封裝:TSOT-23-5 包裝:帶卷 (TR) |
| AS1362-BTTT-27 EB | 制造商:ams 功能描述:Evaluation Board |
| AS1362-BTTT-28 | 功能描述:低壓差控制器 - LDO RoHS:否 制造商:Micrel 最大輸入電壓:5.5 V 輸出電壓:Adjustable 輸出電流:10 mA 負(fù)載調(diào)節(jié): 輸出類型:Adjustable, Fixed 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-6 |
| AS1362-BTTT-28 EB | 制造商:ams 功能描述:Evaluation Board |
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