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参数资料
| 型号： | L6920 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A SWITCHING REGULATOR, PDSO8 |
| 封装： | 4.40 MM, TSSOP-8 |
| 文件页数： | 11/12页 |
| 文件大小： | 162K |
| 代理商： | L6920 |
L6920
8/12
Figure 7. Demoboard Circuit
R1, R2 should be selected in the range of 100k
- 10M to minimize consumption and error due to current sunk
by FB pin (few nA).
Output capacitor selection
The output capacitor affects both efficiency and output ripple so its choice has to be considered with particular
care.
The capacitance value should be in the range of about 10
F-100F.
An additional, smaller, low ESR capacitor can be in parallel for high frequency filtering. A typical value can be
around 1
F.
If very high performances, in terms of efficiency and output voltage ripple, are required, a very low ESR capac-
itor has to be chosen.
Ceramic capacitors are the lowest ESR but they are very expensive.
Other possibilities are low-ESR tantalum capacitors, available from KEMET, AVX and other sources. POSCAP
capacitors from SANYO and polymeric capacitors from PANASONIC are also good.
Below there is a list of some capacitors suppliers. The cap values and rated voltages are only a suggested pos-
sibility
Jumper
Position
Function
J1
1-2
Device enabled
2-3
Device disabled
None
Adjustable using R4 and R5
J2
1-2
3.3V output voltage
2-3
5V output voltage
L1 10
H
+VBATT
VBATT
F.B.
VOUT
7
1
8
GND
Panasonic
ELL6RH100M
Panasonic
EEFCDJ470R
Panasonic
EEFCDJ470R
C2
47
F
C1
47
F
C4
100nF
VOUT
GND
1
2
3
2
J2
J1
1
LBO
3
SHDN
5
VREF
GND
4
6
LBI
2
LBO
SHDN
L6920
D01IN1310
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6920D | 功能描述:直流/直流开关转换器 0.6 to 5.5V Step-Up RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| L6920DB | 功能描述:直流/直流开关转换器 Synchronous Rectifer Step Up Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| L6920DBTR | 功能描述:直流/直流开关转换器 SYNCRONOUS RECT. STEP UP CONVERTER RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| L6920DC | 功能描述:直流/直流开关调节器 Sync Rectifier Step Up Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| L6920DCTR | 功能描述:直流/直流开关调节器 Sync Rectifier Step Up Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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