UR15033 Datasheet, PDF (5/6 Pages) Unisonic Technologies – 2 CHANNEL LOW-DROPOUT VOLTAGE REGULATOR

UR15033
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=6V. The cannot be guaranteed at other voltages in the operating range of 4.0V ~ 16.0V, homever, the
variation will be small.
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
serially as ESR. For the bypass capacitor, a 0.33μF capacitor placed as close to V_CC pin and GND pin as possible is
recommended.
Over- current Protection Circuit
The over-current protection circuits are built in at the outputs. They protect the IC from being damaged when the
load is short-circuited or subjected to an over current condition. This protection circuits perform holdback current
limiting.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-019.D