Person facts: Charlie Lee
Litecoin uses the Scrypt proof-of-work algorithm and targets a block time of about 2.5 minutes, one quarter of Bitcoin’s.
Litecoin has a total supply cap of 84 million coins, and the block reward is halved every 840,000 blocks, approximately once every four years.
The maximum supply of $LTC is 84 million coins, exactly four times that of Bitcoin.

Just my personal opinion—take it with a grain of salt; this is not advice.