TPS714: Max Output current at 6.5V O/p

Hi Rahul,
It should be OK if the power consumption is not too high for the package. Can you specify, what is VIN, VOUT, and maximum ambient temp -
Regards,
Mike

VIN= 9V

VOUT= +6.5V

 operating temp range = -40 to +85deg

Ambient temp = +55deg

Rahul,

OK, it calculates to roughly a 60 degree rise for the DCK package. This is too hot for 85 deg. max. ambient, but, the DRV package is only a 12 degree rise. This part will be fine for the DRV package type.

Regards,
Mike

oK,
It means we can use it for current limit power up 100mA requirement ?

Rahul,

Yes, the min. current limit when VOUT = 0 V (at startup or short circuit) is 100 mA.

Regards,
Mike

we have some more requirement as follows  :

1. VOUT = -3.5V

Vin = 5V

Vout = -3.5V (Negative voltage) +/-5%

 Current limit power up = 10mA 

Steady State current = 5mA

Ripple   =  10mV RMS @ 1MHZ

2. VOUT = +1.8V

Vin = 3V

Vout = +1.8V +/-15%

 Current limit power up = 150mA 

Steady State current = 80mA

Ripple   =  30mV RMS @ 1MHZ

please suggest some regulator meet the requirement. 

Rahul,

For 5V to -3.5 V, look at LM27761.

For 3.3 to 1.8 V, look at LP5907.

Regards,
Mike

does it have current limit feature for 10mA?
We need to limit current at 10mA for -3.5V.

Please reply

If not possible can we use current limiter IC to limit the O/P current to 10mA for -3.5V supply ?

i want to know that if load current requrement increases to 100mA at power On , Is thisLDO will stop the o/p voltage (vout =0V) ???
please confirm

Hi Rahul,

Yes, if you increase the load current to ~100 mA at startup, the device will go into current limit, and the output will not rise.

Regards,

Mike

it means o/p current will not increase but what would be the vout if load current increses to 100mA at startup ?