UR3325(Old_V) 데이터 시트보기 (PDF) - Unisonic Technologies

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UR3325
(Rev.:Old_V)

2 CHANNEL LOW-DROPOUT VOLTAGE REGULATOR

Unisonic Technologies 

UTC UR3325 LINEAR INTEGRATED CIRCUIT

TEST CIRCUIT FOR RIPPLE REJECTION RATIO

Vcc

Vo1

or

Vo2

ein

GND

0.33μF

VIN

22μF +

V

Io

APPLICATION INFORMATION

Operation Supply Voltage Range

The circuit functionality is guaranteed within operation of ambient temperature range, as long as it is within

operation supply voltage range. The standard electrical characteristic values are guaranteed at the test circuit

voltage of Vcc=5V. The cannot be guaranteed at other voltages in the operating range of 3.0V~16.0V, homever, the

variation will be small.

● Input /Output characteristic

VOUT

Dropout Region Regulation Region

Off Region

Vin

Recommended Operating Region

2V 3V

(Typ.TA=25℃)

For proper regulation, this device must be operated in the Recommended Operating Region shown above.

Power Dissipation

Refer to the thermal duration characteristics shown in Fig.3. Also, be sure to use this IC within a power dissipation

rage allowing enough margins.

Output and Bypass Capacitor

To prevent oscillations, place the output capacitor between the output pin and GND for both channel. There is a

possibility for oscillation if capacitor's value changes due to temperature, voltage, etc. More than 22μF electrolytic

capacitor is recommended. If an extremely large value of (over 1000μF) is used, it may cause oscillations at low

frequency. In case of using ceramic capacitor (it is recommended more than 10μF) connect with 1Ω resistance

UTC UNISONIC TECHNOLOGIES CO., LTD. 5

QW-R102-017,C

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