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PDF UR3318 Data sheet ( Hoja de datos )
| Número de pieza | UR3318 | |
| Descripción | 2 CHANNEL LOW-DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UR3318 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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UTCUR3318 LINEAR INTEGRATED CIRCUIT
2 CHANNEL LOW-DROPOUT
VOLTAGE REGULATOR
FEATURES
*Dual Output: 3.3V/1A, 1.8V/1A.
*Output Voltage Precision of ±2%.
*Output consists of PNP power transistor with
low-dropout voltage.
*Built-in over current protection circuit (OCP).
*Built-in Thermal Shut Down Circuit (TSD).
*Ideal for Hard Disk Drives applications.
1
TO-252-5
1
TO-263-5
PIN DISCRIPTION
PIN NO.
PIN NAME
1 Vcc
2 N.C.
3 GND
4 Vo1
5 Vo2
Power Supply
Not internally connected
Ground
3.3V Output
1.8V Output
1: Vcc 2: NC 3: GND 4: Vo1 5: VO2
*Pb-free plating product number: UR3318L
FUNCTION
UTC
UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R102-018,C
1 page  
UTCUR3318 LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT FOR RIPPLE REJECTION RATIO
Vcc Vo1
or
Vo2
ein GND
VIN 0.33μF
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
Recommended Operating Region
2V 3V
(Typ.TA=25℃)
Vin
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-R102-018,C
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet UR3318.PDF ] | |
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