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參數(shù)資料
| 型號： | AS1364-BTDT-AD |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 1A LDO, Low Noise |
| 文件頁數(shù)： | 9/19頁 |
| 文件大?。?/td> | 787K |
| 代理商： | AS1364-BTDT-AD |
AS1364
Datasheet - Detailed Description
www.austriamicrosystems.com
Revision 1.8
9 - 19
8 Detailed Description
The AS1364 output voltage is factory-trimmed or is adjustable from +1.2V to +5V, and is guaranteed to supply 1A of output current. The device
consists of a +1.20V internal reference, error amplifier, MOSFET driver, P-channel pass transistor, internal feedback voltage-divider and a
comparator
(see Figure 16)
.
Figure 16. AS1364 - Block Diagram
Figure 16
shows the block diagram of the AS1364. It identifies the basics of a series linear regulator employing a P-Channel MOSFET as the
control element. A stable voltage reference (1.2V REF in
Figure 16
) is compared with an attenuated sample of the output voltage. Any difference
between the two voltages (reference and sample) creates an output from the error amplifier that drives the series control element to reduce the
difference to a minimum. The error amplifier incorporates additional buffering to drive the relatively large gate capacitance of the series pass P-
channel MOSFET, when additional drive current is required under transient conditions. Input supply variations are absorbed by the series
element, and output voltage variations with loading are absorbed by the low output impedance of the regulator.
When in shutdown, a 5k
discharge path is connected between the output terminal and ground.
1
AS1364
+
–
+
–
94%
VREF
+
–
100mV
+
–
R
1
C
OUT
4.7μF
5k
R
2
+
–
R
POK
100k
4
IN
6
OUT
2
EN
POK
7
SET/BYP
8
GND
C
IN
4.7μF
Shutdown
Logic
MOSFET
Driver
w/I
LIM
Thermal
Sensor
V
IN
2.0V to 5.5V
V
OUT
Logic Supply Voltage
To Controller
Error
Amplifier
On
Off
1.20V
Reference
V
OUT
1.2V to 5.0V
3
IN
5
OUT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1367-BTDT-12 | Adaptive LDO |
| AS1367-BTDT-18 | Adaptive LDO |
| AS1367-BTDT-30 | Adaptive LDO |
| AS1367-BTDT-33 | Adaptive LDO |
| AS1367-BTDT-45 | Adaptive LDO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1364-BTDT-AD EB | 制造商:ams 功能描述:Evaluation Board |
| AS1364-BTDT-AD-1k | 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 |
| AS1364-TD-18_EK_ST | 功能描述:AS1364 1 - Single Channels per IC Positive Fixed Linear Voltage Regulator Evaluation Board 制造商:ams 系列:- 零件狀態(tài):有效 每 IC 通道數(shù):1 - 單 電壓 - 輸出:1.8V 電流 - 輸出:1A 電壓 - 輸入:2 V ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 所含物品:板 使用的 IC/零件:AS1364 標(biāo)準(zhǔn)包裝:1 |
| AS1364-TD-45_EK_ST | 功能描述:AS1364 1 - Single Channels per IC Positive Fixed Linear Voltage Regulator Evaluation Board 制造商:ams 系列:- 零件狀態(tài):有效 每 IC 通道數(shù):1 - 單 電壓 - 輸出:4.5V 電流 - 輸出:1A 電壓 - 輸入:2 V ~ 5.5 V 穩(wěn)壓器類型:正，固定式 工作溫度:-40°C ~ 85°C 板類型:完全填充 所含物品:板 使用的 IC/零件:AS1364 標(biāo)準(zhǔn)包裝:1 |
| AS1364-TD-AD_EK_ST | 功能描述:AS1364 1 - Single Channels per IC Positive Adjustable Linear Voltage Regulator Evaluation Board 制造商:ams 系列:- 零件狀態(tài):有效 每 IC 通道數(shù):1 - 單 電壓 - 輸出:3.3V 電流 - 輸出:1A 電壓 - 輸入:2 V ~ 5.5 V 穩(wěn)壓器類型:正，可調(diào)式 工作溫度:-40°C ~ 85°C 板類型:完全填充 所含物品:板 使用的 IC/零件:AS1364 標(biāo)準(zhǔn)包裝:1 |
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