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參數資料
| 型號： | L4973V51 |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 抗輻射高效，5安培開關穩壓器 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 222K |
| 代理商： | L4973V51 |
L4973V3.3 - L4973V5.1
L4973D3.3 - L4973D5.1
3.5A STEP DOWN SWITCHING REGULATOR
UPTO3.5ASTEPDOWNCONVERTER
OPERATING INPUT VOLTAGE FROM 8V TO
55V
3.3V AND 5.1V (
±
1%) FIXED OUTPUT, AND
ADJUSTABLE OUTPUTS FROM:
0V TO 50V (3.3V type)
5.1VTO 50V (5.1 type)
FREQUENCYADJUSTABLEUP TO300KHz
VOLTAGEFEED FORWARD
ZERO LOAD CURRENT OPERATION (min
1mA)
INTERNAL CURRENT LIMITING (PULSE BY
PULSEAND HICCUPMODE)
PRECISE 5.1V (1.5%) REFERENCE VOLT-
AGE EXTERNALLY AVAILABLE
INPUT/OUTPUT SYNCHRONIZATION FUNC-
TION
INHIBIT FOR ZERO CURRENT CONSUMP-
TION (100
μ
A Typ.at V
CC
= 24V)
PROTECTION AGAINST FEEDBACK DIS-
CONNECTION
THERMAL SHUTDOWN
OUTPUT OVERVOLTAGEPROTECTION
SOFTSTART FUNCTION
DESCRIPTION
The L4973 is a step down monolithic power
switching regulator delivering 3.5A at fixed volt-
ages of 3.3V or 5.1V and using a simple external
divider output adjustablevoltageup to 50V.
Realized in BCD mixed technology, the device
April 2000
L4973
V
CC
(8V to 55V)
C
IN
C2
R
OSC
C
OSC
D1
L1
C
OUT
V
O
(3.3V or 5.1V)
C
BOOT
4,5,6,
13,14,15
7
9
8
1
11
3
10
D97IN554A
17
R
COMP
C
COMP
C
SS
2
16
12
TYPICAL APPLICATION CIRCUIT (POWERDIP)
POWERDIP (12+3+3)
SO20(12+4+4)
ORDERING NUMBERS:
L4973V3.3 (Powerdip)
L4973D3.3
L4973V5.1 (Powerdip)
L4973D5.1
(SO20)
(SO20)
MULTIPOWER BCD TECHNOLOGY
1/16
相關PDF資料 |
PDF描述 |
|---|---|
| L4973D5.1 | 3.5A Step Down Switching Regulator(3.5A步降開關穩壓器) |
| L4973V5.1 | 3.5A Step Down Switching Regulator(3.5A步降開關穩壓器) |
| L4974A | Power Switching Regulator(功率開關穩壓器) |
| L4975A | Power Switching Regulator(功率開關穩壓器) |
| L4976 | 1A Step Down Switching Regulator(步降開關穩壓器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L4974 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.5A SWITCHING REGULATOR |
| L4974A | 功能描述:直流/直流開關調節器 5.1 to 40V Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L4974A | 制造商:STMicroelectronics 功能描述:IC SWITCHING REG 3.5A 4974 DIP20 |
| L4974AE | 制造商:STMicroelectronics 功能描述: |
| L4975 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5A SWITCHING REGULATOR |
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