LM5169-Q1: LM5164

Basavaraj L

Part Number: LM5169-Q1
Other Parts Discussed in Thread: LM5169, LM5164,

What is the technical difference between the LM5164 & LM5169 Buck converter IC's, why LM5169 IC is consuming more power comparing to LM5164 IC.

over 1 year ago

0 Daniel Louis over 1 year ago

TI__Intellectual 1530 points

Hi Basavaraj,

The LM5164 is a 100-V Input, 1-A synchronous buck DC/DC converter with ultra-low IQ

whereas the LM5169 is a 0.65-A/0.3-A, 120-V, Step-Down Converter with Fly-BuckConverter Capability

Best,

Daniel

0 Basavaraj L over 1 year ago in reply to Daniel Louis

Prodigy 20 points

LM5169 is consuming 7mA of current where LM5164 is consuming 1.2mA. Please can you explain, why it is consuming more current.

0 Daniel Louis over 1 year ago in reply to Basavaraj L

TI__Intellectual 1530 points

Basavaraj,

Please show me your schematic and tell me your I/O specs, load value, and specific version of the LM5169-Q1, LM5164.

Thanks

0 Basavaraj L over 1 year ago in reply to Daniel Louis

Prodigy 20 points

Dear Team,

I am using LM5169FQDDARQ1 IC for the below ckt, it's consuming 7.2mA and same circuit is consuming 1.2mA where i am using LM5164 IC.

0 Daniel Louis over 1 year ago in reply to Basavaraj L

TI__Intellectual 1530 points

Hi Basavaraj,

I will take a look at your schematic and get back to you shortly

Thanks

0 Daniel Louis over 1 year ago in reply to Basavaraj L

TI__Intellectual 1530 points

Hi Basavaraj,

the LM5169FQDDARQ1 is forced PWM so it will be in PWM even at no load and will always have a higher current. I you want a drop in replacement for the LM5169FQDDARQ1 please use the LM5169P which does not have forced PWM. Whereas, the LM5164 has an ultra low quiescent current and therefore draws considerably less current at no load.

Thanks

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LM5169-Q1: LM5164