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參數(shù)資料
| 型號： | L5972D |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)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(guān)穩(wěn)壓器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 173K |
| 代理商： | L5972D |
1/10
L5972D
May 2003
I
2A INTERNAL SWITCH
I
OPERATING INPUT VOLTAGE FROM 4.4V
TO 36V
I
OUTPUT VOLTAGE ADJUSTABLE FROM
1.235V TO 35V
I
LOW DROPOUT OPERATION: 100% DUTY
CYCLE
I
250KHz INTERNALLY FIXED FREQUENCY
I
VOLTAGE FEEDFORWARD
I
ZERO LOAD CURRENT OPERATION
I
INTERNAL CURRENT LIMITING
I
PROTECTION AGAINST FEEDBACK
DISCONNECTION
I
THERMAL SHUTDOWN
APPLICATIONS:
I
CONSUMER: STB, DVD, TV, VCR,CAR
RADIO, LCD MONITORS
I
NETWORKING: XDSL, MODEMS,DC-DC
MODULES
I
COMPUTER: PRINTERS, AUDIO/GRAPHIC
CARDS, OPTICAL STORAGE, HARD DISK
DRIVE
I
INDUSTRIAL: CHARGERS, CAR BATTERY
DC-DC CONVERTERS
DESCRIPTION
The L5972D is a step down monolithic power switch-
ing regulator with a minimum switch current limit of
2A so it is able to deliver more than 1.5A DC current
to the load depending on the application conditions.
The output voltage can be set from 1.235V to 35V.
The device uses an internal P-Channel D-MOS tran-
sistor (with a typical Rdson of 250m
) as switching
element to minimize the size of the external compo-
nents.
An internal oscillator fixes the switching frequency at
250KHz.
Having a minimum input voltage of 4.4V only, it is
particularly suitable for 5V bus, available in all com-
puter related applications.
Pulse by pulse current limit with the internal frequen-
cy modulation offers an effective constant current
short circuit protection.
SO8 (4+2+2)
ORDERING NUMBERS: L5972D (SO8)
L5972D013TR (Tape & Reel)
2A SWITCH STEP DOWN SWITCHING REGULATOR
TEST APPLICATION CIRCUIT
D03IN1436
8
2
4
5
1
7
L5972D
C1
10
μ
F
35V
CERAMIC
C2
100
μ
F
10V
VOUT=3.3V
VIN = 4.4V to 35V
R1
5.6K
R2
3.3K
R3
4.7K
C4
22nF
C3
220pF
3
L1 33
μ
H
6
D1
STPS2L40U
COMP
VCC
OUT
FB
GND
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PDF描述 |
|---|---|
| L5980 | 0.7A step-down switching regulator |
| L5980TR | 0.7A step-down switching regulator |
| L5985 | 2A step-down switching regulator |
| L5985TR | 2A step-down switching regulator |
| L5991 | PRIMARY CONTROLLER WITH STANDBY |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L5972D_0710 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2A switch step down switching regulator |
| L5972D013TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.235 to 35V Step-Dn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L5973 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2.5A SWITCH STEP DOWN SWITCHING REGULATOR |
| L5973A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2A SWITCH STEP DOWN SWITCHING REGULATOR |
| L5973AD | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.235 to 35V Step-Dn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)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(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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