Low drop adjustable
positive voltage regulator
Low dropout voltage:
- 1.2 V typ. (at IO = 1 A, 25℃)
Output current up to 1 A
Adjustable version availability (VREF = 1.25 V)
Internal current and thermal limit
Available in ±1% (at 25℃) and 2% in full
High supply voltage rejection:
- 75 dB typ. (at 25℃)
Temperature range: -20℃ to 105℃
Designed to use by ceramic capacitors
The BA1117FP is a low drop voltage regulator
able to provide up to 1 A of output current,
available in adjustable versions (VREF =1.25V).
The device is supplied in: TO252-3 and TO220-3.
Surface mounted packages optimize the
thermal characteristics while offering a relevant
space saving advantage. High efficiency is
assured by NPN pass transistor. Only a very
common 22uF minimum capacitor is needed for
stability. Chip trimming allows the regulator to
reach a very tight reference voltage tolerance, within
±1% at 25℃.
VREF = 1.25 V (Typ.)
IADJ = 60 uA (Typ.)
VO = VREF × (1 + R2 / R1 ) + IADJ × R2
Table1. Device summary
Adjustable from 1.25 V
○Product structure：Silicon monolithic integrated circuit
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○This product is not designed protection against radioactive rays.