- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45001 > LV5254LG SPECIALTY ANALOG CIRCUIT, PBGA24 PDF資料下載
參數(shù)資料
| 型號： | LV5254LG |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA24 |
| 封裝： | 3 X 3 MM, FLGA-24 |
| 文件頁數(shù)： | 14/14頁 |
| 文件大?。?/td> | 136K |
| 代理商： | LV5254LG |
LV5254LG
No.A0584-9/14
Relationship Between the Input and Output Voltages
Equation (2) gives the relationship between the input voltage and output voltage. In the LV5254, a charge pump circuit
generates VC2, which is the VIN level inverted, and generates the output voltage VOUT by regulating that inverted
voltage. In this case, due to the charge pump block impedance Ron, the voltage drop IO × Ron (where IO is the load
current) is generated. (* Here we are ignoring the capacitor loss components in the charge pump capacitors C1 and C2.)
The LV5254's current capacity is expressed by equation (3). At this time, the impedance Ron increases with
temperature. Thus the current capacity decreases with increasing temperature.
VOUT = VC2+ΔVreg = (-VIN+Ron×IOUT)+ΔVreg … (2)
VOUT : Output voltage, VIN : Input voltage, IOUT : Load current, Ron : Charge pump block impedance,
ΔVreg : Regulator voltage drop
IO [max] = (VIN+VOUT-ΔVreg [min]) / Ron … (3)
IO [max] : Maximum load current, ΔVreg [min] : Minimum regulator voltage drop
Figure 1 : Charge Pump Block Impedance Temperature Characteristics : Assumed Worst Case (C1, C2 = 1
μF)
Ambient temperature, Ta – °C
CP
on-resistance,
Ron
–
Ω
Ron – Ta
12
16
17
18
15
14
13
19
– 20
60
80
40
20
090
VDD = 5V
CP
Ron
× IOUT
ΔVreg
Voltage drop due to the
charge pump block impedance
Input voltage
VIN
CP output voltage
VC2
Regulator output
VOUT
Voltage drop in the
regulator block
Regulator
IOUT
Load current Iout
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LV5603T | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, PQFP48 |
| LV5603T | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, PQFP48 |
| LV5681P | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PZFM15 |
| LV8041FN | STEPPER MOTOR CONTROLLER, 0.6 A, QCC52 |
| LV8041FN | STEPPER MOTOR CONTROLLER, 0.6 A, QCC52 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LV5254LG-MPB-E | 制造商:ON Semiconductor 功能描述:INVERT CHARGE PUMP - Trays |
| LV5254LG-TLM-E | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| LV5256GP | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Operating Mode Switching Type Step-Up/Down Converter |
| LV5256GP_09 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Operating Mode Switching Type Step-Up/Down Converter |
| LV5256GP-E | 制造商:ON Semiconductor 功能描述:10V BUCK / BOOST CONVERTE - Trays 制造商:ON Semiconductor 功能描述:JTRAY / 10V BUCK / BOOST CONVERTE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。