- 您現在的位置：買賣IC網 > PDF目錄97995 > L4992 (STMICROELECTRONICS) SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PQFP32 PDF資料下載
參數資料
| 型號： | L4992 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封裝： | TQFP-32 |
| 文件頁數： | 21/26頁 |
| 文件大?。?/td> | 296K |
| 代理商： | L4992 |
ELECTRICAL CHARACTERISTICS (VIN = 12V; TJ = 25°C; VOSC = GND; unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
DC CHARACTERISTICS
VIN
Input Supply Voltage
5.5
25
V
I2
Operating Quiescent Current
R5GATE = R3GATE = OPEN
H5GATE = H3GATE = OPEN
RUN3 = RUN5 = REG5
(DRIVERS OFF)
1.35
mA
I2
Stand-By Current
RUN3 = RUN5 = GND
VIN = 12V
VIN = 20V
50
60
100
120
A
+5.1V PWM CONTROLLER SECTION
V5OUT (*)
V5SNS Feedback Voltage
VIN = 5.5 to 20V;
VI5SNS - VV5SNS = 0 to 70mV
4.85
5.13
5.25
V
V6 - V5
Over-Current Threshold Voltage
VSOFT5 = 4V
80
100
120
mV
V6 - V5
Pulse Skipping Mode
Thereshold Voltage
VIN > 6.8V
14
26
38
mV
VIN < 5.8V
7
13
19
mV
V5
Over Voltage Threshold ON
V5SNS
5.35
5.55
5.77
V
Under Voltage Threshold ON
V5SNS
4.54
4.69
4.87
V
+3.3V PWM CONTROLLER SECTION
V3OUT (*)
V3SNS Feedback Voltage
VIN = 5.5 to 20V;
VI3SNS - VV3SNS = 0 to 70mV
3.285
3.39
3.495
V
V19 - V20
Over Current Threshold Voltage
VSOFT3 = 4V
80
100
120
mV
V19 - V20
Pulse Skipping Mode Threshold
Voltage
VIN = 5.5 to 20V;
14
26
38
mV
V20
Over Voltage Threshold ON
V3SNS
3.55
3.7
3.85
V
Under Voltage Threshold ON
V3SNS
3.02
3.14
3.27
V
PWM CONTROLLERS CHARACTERISTICS (BOTH SECTIONS)
FOSC
Switching Frequency Accuracy
OSC = REG5/2
255
300
345
kHz
OSC = 0 or REG5
170
200
230
kHz
V15
Voltage Range for 300kHz
Operation
2.4
2.6
V
TOFF
Dead Time
300
375
450
ns
TOV
Overvoltage Propagation Time
V5SNS to PWROK or
V3SNS to PWROK
1.25
s
TUV
Undervoltage Propagation Time
V5SNS to PWROK or
V3SNS to PWROK
1.5
s
I8, I17
Soft Start Charge Current
3.2
4
4.8
A
V8, V17
Soft Start Clamp Voltage
4
V
(*) Guaranteed by design, not tested in production
L4992
4/26
相關PDF資料 |
PDF描述 |
|---|---|
| L5953 | 1.2 A SWITCHING REGULATOR, 425 kHz SWITCHING FREQ-MAX, PDSO36 |
| L5962 | SWITCHING REGULATOR, PDSO36 |
| L5973DD | 3.5 A SWITCHING REGULATOR, 280 kHz SWITCHING FREQ-MAX, PDSO8 |
| L5988D | 5.6 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| L5994A | 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L4993 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Low drop voltage regulator |
| L4993D | 功能描述:低壓差穩(wěn)壓器 - LDO Low drop voltage regulator 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 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L4993DTR | 功能描述:低壓差穩(wěn)壓器 - LDO Low drop voltage regulator 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 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L4993MD | 功能描述:低壓差穩(wěn)壓器 - LDO Low drop voltage regulator 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 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| L4993MDTR | 功能描述:低壓差穩(wěn)壓器 - LDO 5V 150mA LW DROP VLT REGULATOR 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 負載調節(jié):0.3 % 輸出端數量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
發(fā)布緊急采購，3分鐘左右您將得到回復。