Intersil claims to have smallest pico-projector
The ISL9307 is an integrated mini Power Management IC (mini-PMIC) ideal for applications for powering
low-voltage microprocessor or multiple voltage rails with a battery as an input source, such as a single Li-ion or Li-polymer. ISL9307 integrates two high-efficiency, 3MHz, synchronous step-down converters (DCD1 and DCD2) and two low-input, low-dropout linear regulators (LDO1 and LDO2).
The 3MHz PWM switching frequency allows the use of very small external inductors and capacitors. Both
step-down converters can enter skip mode under light load conditions to further improve efficiency and maximize battery life.
The ISL9307 features EN pins for each channel, thus allowing startup delay for power sequencing.
The ISL9307 also provides two 300mA low-dropout (LDO) regulators. The input voltage range is 1.5V to 5.5V, which allows them to be powered from one of the on-chip step-down converters or directly from a battery. The default LDO power-up output comes with factory pre-set fixed output voltage options between 0.9V and 3.3V.
The ISL9307 is available in a 4mmx4mm 16 Ld TQFN.
- Dual 1500mA, Synchronous Step-down Converters and Dual 300mA, General-purpose LDOs
- Input Voltage Range
- DCD1/DCD2: 2.5V to 5.5V
- VINLDO: 1.5V to 5.5V
- Adjustable Output Voltage
- VODCD1/VODCD2: 0.8V to VIN
- 50μA IQ (Typ) with DCD1/DCD2 in Skip Mode; 20μA IQ (Typ) for each Enabled LDO
- EN Pins for DCD1/DCD2 and LDO1/LDO2
- Small, Thin, 4mmx4mm TQFN
Intersil has developed a pico projector system, which it claims is the smallest production-ready LED liquid crystal on silicon (LCoS) based design.
Developed for embedded or accessory pico projector applications, the firm’s reference design is based on Micron’s E330 5.5 cubic cm qHD optical engine
The platform, Pico-qHD, uses Intersil’s ISL97901 buck/boost RGGB LED driver. The supplier said the devive maintains the highest image quality with precise current control.
“A 2.0mA resolution provides consistent white balance setting, yielding uniformity over production units and throughout the life of projectors,” said Intersil.
The system, which comes on a 1.7 x 2in PCB, can drive up to 1.5A LED current, making it compatible with a variety of high power LEDs, and enabling pico projector engines with brightness levels exceeding 20 lumens.
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