ACE1117 Datasheet, PDF (3/8 Pages) ACE Technology Co., LTD. – 1A Positive Voltage Regulators

Technology
ACE1117
1A Positive Voltage Regulators
Note1: Low duty cycle pulse testing with which T_J remains unchanged.
2: The I_Q of ACE1117-1.5 is 1.2mA (Typ.)
3: The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input
Typical Application
Adjustable Voltage Regulator
Vin>=3.0V
Cin
10uF
ACE1117
Vin
ADJ
Vout
Vout=1.5V
R1
124ohm
Cout
22uF
R2
24.9ohm
V_OUT=V_REF * (1+R2/R1)+I_ADJ * R2
ACE1117-3.3
Fixed Voltage Regulator
Application Hints
The typical Linear regulator would require external capacitors to ensure stability. However, ACE1117 is
designed in such a way that these external capacitor can be omitted if the PCB layout is tight and system
noise is not very high. For better transient and PSRR performance, the Input and Output capacitors are still
recommended.
Input Capacitor
An input capacitor of 10μF is recommended. Ceramic or Tantalum can be used. The value can be
increased without upper limit.
VER 1.3 3