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参数资料
| 型号： | E-L6932D1.8 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 固定正电压单路输出LDO稳压器 |
| 英文描述： | 1.8 V FIXED POSITIVE LDO REGULATOR, PDSO8 |
| 封装： | ROHS COMPLIANT, SOP-8 |
| 文件页数： | 9/11页 |
| 文件大小： | 351K |
| 代理商： | E-L6932D1.8 |
7/11
L6932
Multilayer ceramic caps have the lowest ESR and can be required for particular applications. Nevertheless in
several applications they are ok, the loop stability issue has to be considered (see loop stability section).
Below a list of some suggested capacitor manufacturers.
Loop Stability
The stability of the loop is affected by the zero introduced by the output capacitor.
The time constant of the zero is given by:
This zero helps to increase the phase margin of the loop until the time constant is higher than some hundreds
of nsec, depending also on the output voltage and current.
So, using very low ESR ceramic capacitors could produce oscillations at the output, in particular when regulating
high output voltages (adjustable version).
To solve this issue is sufficient to add a small capacitor (e.g. 1nF to 10nF) in parallel to the high side resistor of
the external divider, as shown in figure 9.
Figure 9. Compensation Network
Thermal Considerations
Since the device is housed in a small SO(4+2+2) package the thermal issue can be the bottleneck of many ap-
plications. The power dissipated by the device is given by:
PDISS = (VIN - VOUT) IOUT
Manufacturer
Type
Cap Value (
F)
Rated Voltage (V)
PANASONIC
CERAMIC
1 to 47
4 to 16
TAYO YUDEN
CERAMIC
1 to 47
4 to 16
TDK
CERAMIC
1 to 47
4 to 16
TOKIN
CERAMIC
1 to 47
4 to 16
SANYO
POSCAP
1 to 47
4 to 16
PANASONIC
SP
1 to 47
4 to 16
KEMET
TANTALUM
1 to 47
4 to 16
TESR C
OUT
=
F
ZERO
1
2
π ESR C
OUT
--------------------------------------------
=
VOUT=1.2V TO 5V
UP to 2A
VIN=2V TO 14V
C1
OUT
1
3
7
5
6
4
8
2
L6932D1.2
GND
C2
IN
EN
ADJ
R1
R2
C3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| E-L6932D2.5 | 功能描述:低压差稳压器 - LDO 2.5V 2A Ultra LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| E-L6932D2.5TR | 功能描述:低压差稳压器 - LDO 2.5V 2A Ultra LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| EL6934 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Laser Diode Driver with Waveform Generator |
| EL6934A | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Laser Diode Driver with Waveform Generator |
| EL6934ACLZ | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Laser Diode Driver with Waveform Generator |
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