OmniVision WL2855K CubeChip Image Sensor ASIC Camera
Descriptions
The WL2855K series are high accuracy, low noise, 12V Input, 500mA, CMOS Linear regulator with high ripple rejection. The devices offer a new level of cost effective performance in cellular phones, laptop and notebook computers, and other portable devices.
The WL2855K has the fold-back maximum output current which depends on the output voltage. So the current limit functions both as a short circuit protection and as an output current limiter.
The WL2855K regulators are available in standard SOT-89-3L Package. Standard products are PBS-free and Halogen-free.
Features
- Input Voltage Range : 2.5V~12V
- Output Voltage Range :1.2V~5V
- Output Current :500mA
- Fixed Voltage Accuracy :±1%(Vo≥2.5V)
- Quiescent current :1uA
- Dropout voltage : 840mV@Vo=4V Io=500mA
- Recommend capacitor : ≥0.1uF
- Short-Circuit Protection
Applications
- Mobile Phone
- Cellphones, radiophone, digital cameras
- Bluetooth, wireless handsets
- Others portable electronics device
Pin Configuration (Top View)
- 2855 : Device code
- ** : Voltage code
- Y : Year Cod
- e W : Week Code
For detail marking information, please see page 12.
- Marking
Order Information
For detail order information, please see page 12.
Typical Application
Recommend capacitor :≥0.1uF
Pin Description SOT-89-3L
| PIN | Symbol | Description |
| 1 | GND | Ground |
| 2 | VIN | Input |
| 3 | VOUT | Output |
Block Diagram
Absolute Maximum Ratings
| Parameter | Value | Unit | |
| Power Dissipation, PD@TA=25℃ | 1.5 | W | |
| VIN Range | -0.3~13.5 | V | |
| VOUT Range | -0.3~5.5 | V | |
| IOUT | Internally Limited | mA | |
| Lead Temperature Range | 260 | oC | |
| Storage Temperature Range | -55~150 | oC | |
| Operating Junction Temperature Range | 150 | oC | |
| MSL | Level-3 | ||
| ESD Ratings | HBM | 4000 | V |
| MM | 200 | V | |
Recommend Operating Ratings
| Parameter | Value | Unit |
| Operating Supply voltage | 2.5~12 | V |
| Operating Temperature Range | -40~85 | oC |
| Thermal Resistance, RθJA (SOT-89-3L) | 77 | oC/W |
Electronics Characteristics
(Ta=25oC, VIN=VOUT+1V, CIN=COUT=1μF, IOUT=1mA，unless otherwise noted)
| Parameter | Symbol | Condition | Min. | Typ. | Max. | Unit | |
| Output Voltage | VOUT | VOUT≤2.5V | -25 | VOUT | +25 | mV | |
| VOUT>2.5V | 0.99* Vout | VOUT | 1.01* Vout | V | |||
| Input Voltage | VIN | 2.5 | 12 | V | |||
| Current Limit | ILIM | VIN≥3.3V | 500 | mA | |||
| Dropout Voltage | VDROP | VOUT=3.3V, IOUT=500mA | 940 | 1200 | mV | ||
| VOUT=4V, IOUT=500mA | 840 | 1100 | mV | ||||
| Line Regulation | △VLINE | VIN=VOUT+1~12V | 1 | 5 | mV | ||
| Load Regulation | △VLoad | IOUT=1~500mA | 30 | 50 | mV | ||
| Quiescent Current | IQ | VIN=4V, IOUT=0 | 1 | 2.2 | μA | ||
| Short Current | ISHORT | VOUT short to GND | 180 | mA | |||
| Power Supply Rejection Rate | PSRR | Vo=3.3V, Io=10mA | f=100Hz | 70 | dB | ||
| f=1kHz | 50 | dB | |||||
| f=10kHz | 25 | dB | |||||
| Output Noise Voltage | eNO | Vo=3.3V, Io=30mA | 54 | μVRMS | |||
`Typical characteristics
(Ta=25oC, VIN=VOUT+1V, IOUT=1mA，CIN=COUT=1μF, unless otherwise noted) VOUT=3.3V
- Start up & Shut down
VOUT=3.3V
VIN=4.3V,COUT=1μF,IOUT=1mA
- Load & Line Transient
PACKAGE OUTLINE DIMENSIONS
| Symbol | Dimensions in Millimeters | ||
| Min. | Typ. | Max. | |
| A | 1.40 | 1.50 | 1.60 |
| b | 0.32 | 0.42 | 0.52 |
| b1 | 0.40 | 0.49 | 0.58 |
| c | 0.30 | 0.40 | 0.50 |
| D | 4.40 | 4.50 | 4.60 |
| D1 | 1.60 Ref | ||
| E | 2.30 | 2.45 | 2.60 |
| E1 | 3.75 | 4.00 | 4.25 |
| e | 1.50 BSC | ||
| e1 | 3.00 BSC | ||
| L | 1.05 Ref | ||
TAPE AND REEL INFORMATION
| RD | Reel Dimension | 7inch | 13inch | ||
| W | Overall width of the carrier tape | 8mm | 12mm | 16mm | |
| P1 | Pitch between successive cavity centers | 2mm | 4mm | 8mm | |
| Pin1 | Pin1 Quadrant | Q1 | Q2 | Q3 | Q4 |
| Ordering No. | Vout (V) | Package | Operating Temperature | Marking | Shipping |
| WL2855K18-3/TR | 1.8 | SOT-89-3L | -40~85℃ | BJYW | Tape and Reel, 1000 |
| WL2855K28-3/TR | 2.8 | SOT-89-3L | -40~85℃ | CJYW | Tape and Reel, 1000 |
| WL2855K30-3/TR | 3.0 | SOT-89-3L | -40~85℃ | DAYW | Tape and Reel, 1000 |
| WL2855K33-3/TR | 3.3 | SOT-89-3L | -40~85℃ | DDYW | Tape and Reel, 1000 |
| WL2855K37-3/TR | 3.7 | SOT-89-3L | -40~85℃ | DHYW | Tape and Reel, 1000 |
| WL2855K38-3/TR | 3.8 | SOT-89-3L | -40~85℃ | DJYW | Tape and Reel, 1000 |
| WL2855K40-3/TR | 4.0 | SOT-89-3L | -40~85℃ | EAYW | Tape and Reel, 1000 |
| WL2855K50-3/TR | 5.0 | SOT-89-3L | -40~85℃ | FAYW | Tape and Reel, 1000 |
OMNIVISION | Semiconductor Manufacturer of Sensing, Analog and Touch & Display Solutions.
