SI-3050KM 查看數據表（PDF） - Allegro MicroSystems

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SI-3050KM

1 A, Low-Dropout, 5.0 V Regulator

Allegro MicroSystems 

LRinegeuarlators

SI-3050KM

1 A, Low-Dropout,

5.0 V Regulator

TYPICAL CHARACTERISTICS (cont.)

(VI = 7 V, TA = 25°C)

Overvoltage Protection

GND Pin Current

APPLICATIONS INFORMATION

Input Capacitor (CI, ≥22 µF). This is necessary either

when the input line includes inductance or when the wiring

is long.

Output Capacitor (CO, ≥47 µF). This device is not

designed for a use with a very low ESR output capacitor

such as a ceramic capacitor. Output oscillation may occur

with that kind of capacitor. The recommended ESR is

0.2~2 Ω at TA = 25°C.

Reverse-Bias Protection Diode (D1). Diode D1

provides reverse-bias protection between the input and

output. Sanken type SFPL-52 is recommended.

ENABLE Input. The ENABLE (control) input features

an internal pull-down resistor. Leaving this input open

causes the output to turn off.

Parallel Operation. Parallel operation to increase load

current is not permitted.

Increased Output Voltage. The output voltage (VO)

may be increased by inserting a resistor (REXT) between

SENSE and OUTPUT. The current flowing into SENSE is

typically 90 µA ±30%. To minimize the effect of ISENSE

and temperature on REXT, it is recommended that a 10 kΩ

resistor be added between SENSE and GND to increase the

current in REXT. The value of REXT is then

REXT = (VO – 5) × 106/600

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