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參數(shù)資料
| 型號： | L4971D |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | SO-16 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大小： | 571K |
| 代理商： | L4971D |
L4971
4/13
Soft Start
Soft start charge current
30
40
50
A
Soft start discharge current
6
10
14
A
Inhibit
VLL
Low level voltage
*
0.9
V
IsLL
Isource Low level
*
5
15
A
DC Characteristics
Iqop
Total operating quiescent
current
46
mA
Iq
Quiescent current
Duty Cycle = 0; VFB = 3.8V
2.5
3.5
mA
Iqst-by
Total stand-by quiescent
current
Vinh <0.9V
100
200
A
Vcc = 55V; Vinh<0.9V
150
300
A
Error Amplifier
VFB
Voltage Feedback Input
3.33
3.36
3.39
V
RL
Line regulation
Vcc = 8 to 55V
5
10
mV
Ref. voltage stability vs
temperature
*
0.4
mV/°C
VoH
High level output voltage
VFB = 2.5V
10.3
V
VoL
Low level output voltage
VFB = 3.8V
0.65
V
Io source
Source output current
Vcomp = 6V; VFB = 2.5V
200
300
A
Io sink
Sink output current
Vcomp = 6V; VFB= 3.8V
200
300
A
Ib
Source bias current
2
3
A
SVRR E/A
Supply voltage ripple rejection
Vcomp fb; Vcc = 8 to 55V
60
80
dB
DC open loop gain
RL = ∞
50
57
dB
gm
Transconductance
Icomp = -0.1 to 0.1mA
Vcomp = 6V
2.5
ms
Oscillator Section
Ramp Valley
0.78
0.85
0.92
V
Ramp peak
Vcc = 8V
2
2.15
2.3
V
Vcc = 55V
9
9.6
10.2
V
Maximum duty cycle
95
97
%
Maximum Frequency
Duty Cycle = 0% ;
Rosc = 13k, Cosc = 820pF
300
kHz
Table 5. (Tj = 25°C, Cosc = 2.7nF, Rosc = 20k, VCC = 24V, unless otherwise specified.)
* Specification Refered to Tj from 0 to 125°C
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|---|---|
| L4971D013TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 3.3 to 50V Step-Down 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 |
| L4972 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2A SWITCHINGREGULATOR |
| L4972A | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 5.1 to 40V 2.0 Amp 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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| L4972A_05 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:2A SWITCHING REGULATOR |
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