參數(shù)資料
型號(hào)： 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(yè)數(shù)： 22/26頁(yè)
文件大?。?/td> 296K
代理商： L4992
ELECTRICAL CHARACTERISTICS (Continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
HIGH AND LOW SIDE GATE DRIVER (BOTH SECTIONS)
I25, I27,
I32, I30
Source Output Peak Current
CLOAD = 1nF
0.2
0.5
A
Sink Output Peak Current
CLOAD = 1nF
0.2
0.5
A
RH
RDSON Resistance (or Impedance)
Driver OUT HIGH
7
RL
RDSON resistance (or Impedance)
Driver OUT LOW
5
VOH
Output High Voltage
HSTRAP = REG5
ISOURCE = 10mA; HSRC = GND
4.40
5.3
5.61
V
VOL
Output Low Voltage
HSTRAP = REG5
ISINK = 10mA HSRC = GND
0.5
V
TCC
Cross-Conduction Delay
30
75
130
ns
12V LINEAR REGULATOR SECTION
V21
Input Voltage Range
13
20
V
V22
Output Voltage
I22 = 0 to 120mA
11.54
12.0
12.48
V
I22
Current Limiting
VREG12 = 12V
120
mA
Short Circuit Current
VREG12 = 0V
150
mA
VCP
Input Voltage Clamp
ICLAMP = 100
A16
V
"One Shot" Activation Threshold
V13IN Falling
12.88
13.7
14.52
V
"One Shot" Pulse
1.5
s
INTERNAL REGULATOR (VREG5) AND REFERENCE VOLTAGE
V3
VREG5 Output Voltage
VIN = 5.5 to 20V
ILOAD = 0 to 5mA
4.5
5.3
5.61
V
I3
Total Current Capability
VREG5 = 5.3V
VREG5 = 6V
25
70
mA
Switch-Over Threshold Voltage
4.3
4.53
4.7
V
V12
Reference Voltage
3.35
3.39
3.43
V
VIN = 5.5 to 20V
ILOAD = 1 to 5mA
3.32
3.39
3.46
V
I12
Source Current at Reference
Voltage
5mA
POWER GOOD AND ENABLE FUNCTION
V16, V11
RUN3, RUN5, Enable Voltage
HIGH LEVEL
2.4
V
V16, V11
RUN3, RUN5, Disable Voltage
LOW LEVEL
0.8
V
T10
Power Good Delay
CCRST = 100nF
160
200
240
ms
T27, T30
Shutdown Delay Time before
Low Side Activation
(Except Over-Voltage Fault)
CCRST = 100nF,
160
200
240
ms
CRST Timing Rate
2
ms/nF
Power Good High Level
IPWROK = 40
A
4.1
V
Power Good LowLevel
IPWROK = 320
A
0.4
V
SYNCHRONIZATION
Synchronisation Pulse Width
400
ns
Synchronisation Input Voltage
(Falling Edge Transition)
5V
L4992
5/26
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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(dòng)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
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(dòng)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
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(dòng)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
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(dòng)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
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