Other Parts Discussed in Thread: LM5001 , LM2991 , TPS40210 I am looking for help in designing a negative input to negative output DC/DC, low noise high efficiency buck converter.
The input voltage range is -6V to -15V (nom 7.5V) and output voltage of -2…
Other Parts Discussed in Thread: LM317 , LM337 Hi,
I'm creating a Bipolar supply to drive an ECL Phase Frequency Detector. The Positive Supply (LM317) provides +1.3V (From a +5V supply). The Negative Supply (LM2991S) provides -3.7V (from a -5V supply)(the…
Other Parts Discussed in Thread: LM2991 I need to drive a distributed ceramic capacitive load of ~80uF, 144 capacitors across a 1 sqft multi-layer PCB. Can I have a tantalum close to the LM2991 for stability, then add a series resistor before I drive the…
Other Parts Discussed in Thread: LM2991 Hi,All
How much is range of input voltage about LM2991?
I checked LM2991 datasheet,but nothing about it.
I think that input voltage range is -3V to 24V,correct?
Best Regards.
Other Parts Discussed in Thread: LM2991 Hi,All
It is written that Vout:ON is 0.8 to 1.2[V] and Vout:OFF:1.3 to 2.4[V] about ON/OFF input voltage on LM2991 datasheet.
If I input under 0.8[V] and over 2.4[V] to ON/OFF input voltage,what happens?
Please teach…
Other Parts Discussed in Thread: LM2991 Hi All
I want to know what is the maximum output current of LM2991 LDO. As mentioned in features section in datasheet it says that its output current is 1A max. Where as the characteristics section says that its…
Other Parts Discussed in Thread: LM2991 Hi All
I am using LM2991 in one of my design. I have a question about thermal pad connection of that LDO. Generally we connect thermal pas with ground. But in datasheet in a figure it shows that thermal pas is input…
Other Parts Discussed in Thread: LM2991 , LM5001 Hello,
I have a requirement as below,
Input : -15V
Output : -5V / 500mA
Eff: >90%
Request to advice ti parts to realise this solution with proven circuit and application note.
Rgds.
