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參數(shù)資料
| 型號： | LP2975IMMX-3.3/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | MINI, SOP-8 |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 1135K |
| 代理商： | LP2975IMMX-3.3/NOPB |
Typical Performance Characteristics Unless otherwise specified: T
A = 25C, CIN = 1 F, ON/OFF pin
is tied to 1.5V. (Continued)
Load Regulation
Leakage Current
10003415
10003435
Controller Gain and Phase Response
10003436
Reference Designs
The LP2975 controller can be used with virtually any
P-channel MOSFET to build a wide variety of linear voltage
regulators.
Since it would be impossible to document all the different
voltage and current combinations that could be built, a num-
ber of reference designs will be presented along with perfor-
mance data for each.
THE PERFORMANCE DATA SHOWN IS ACTUAL TEST
DATA, BUT IS NOT GUARANTEED.
DESIGN #1: V
OUT =5V @ 5A
(Refer to Typical
Application Circuits)
Components
C
IN = 82 F Aluminum Electrolytic
C
OUT = 120 F Aluminum Electrolytic
C
F = 220 pF
R
SC =10m
P-FET = NDP6020P
Heatsink: (assuming V
IN
≤ 7V and T
A
≤ 60C) if protection
against a continuous short-circuit is required, a heatsink with
θ
S-A
≤ 1.5 C/W must be used. However, if continuous short-
circuit survivability is not needed, a heatsink with
θ
S-A
≤
6 C/W is adequate.
Performance Data
Dropout Voltage
Dropout voltage is defined as the minumum input-to-output
differential voltage required by the regulator to keep the
output in regulation. It is measured by reducing V
IN until the
output voltage drops below the nominal value (the nominal
value is the output voltage measured with V
IN = 5.5V). IL =
5A for this test.
DROPOUT VOLTAGE = 323 mV
LP2975
www.national.com
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP2975IMMX-5.0 | 功能描述:低壓差穩(wěn)壓器 - LDO 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 |
| LP2975IMMX-5.0/NOPB | 功能描述:低壓差穩(wěn)壓器 - LDO 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 |
| LP2978AY-3.8 WAF | 制造商:Texas Instruments 功能描述: |
| LP2978IM5-3.8 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO REGULATOR, LOW-NOISE - Bulk 制造商:Texas Instruments 功能描述: |
| LP2978IM5X-3.8 | 制造商:Rochester Electronics LLC 功能描述:50MA LDO REGULATOR, LOW-NOISE - Bulk 制造商:Texas Instruments 功能描述: |
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