ACE1117 datasheet(3/8 Pages) ACE

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ACE1117

1A Positive Voltage Regulators

VER 1.4

Thermal

Protection

OTP

175

℃

RMS Output

Noise

TA=25℃, 10Hz≦f≦100kHz

0.003

%VO

Ripple Rejection

Ratio

f=120Hz, COUT=22uF (Tantalum),

(VIN-VOUT)=3V, IOUT=10mA

Note1: Low duty cycle pulse testing with which TJ remains unchanged.

2: The IQ 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

ACE1117

Vout=1.5V

Vin

Vout

ADJ

Cin

124ohm

Cout

10uF

22uF

24.9ohm

VOUT=VREF * (1+R2/R1)+IADJ * 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.

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