AT1397B Datasheet | Aimtron Technology

Features - 95% Efficient possible DC/DC Converter - Bulit-in LED Driver and Open LED Overvoltage Protection - Transformerless Inverting Controller for CCD Bias - 2 Channel Built-in MOSFET Current- Mode PWM and 4 Channel Extra PWM Controllers (CH-3 Synchronous Output) - Up to 1MHz Operating Frequency - Shutdown Current <1u A - Built-in Soft-Start Function Built-in Short-Circuit Protection Function - QFN48 Package General Description The AT1397A/B provide a plete power supply solution for digital cameras. They improve performance, ponent count, and size pared to other multi-channel controllers in 1-cell Li-Ion designs. On-chip MOSFETs provide up to 92~95% efficiency for critical power supplies, while additional channels operate with external FETs for optimum design flexibility. All channels DC/DC operate at one fixed frequency settable from 100KHz to 1MHz to optimize size, cost, and efficiency. Applications - DSC Power Supply Pin Assignment AT1397AN 36 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 9 10 11 12 35 34 33 32 31 30 29 28 27 26 25 24 23 22 AT1397BN CH1 Synchronous Rectified Current Mode Step-Down On-Chip MOSFET CH2 Synchronous Rectified Current Mode Step-Down On-Chip MOSFET CH3 Synchronous Rectified Voltage Mode Step-Down CH4 Seletable Voltage Mode Step-Up/Down/Inverting CH5 Voltage Mode PWM Step-Up CH6 Voltage Mode Step-Up CH1 Synchronous Rectified Current Mode Step-Down On-Chip MOSFET CH2 Synchronous Rectified Current Mode Step-Down On-Chip MOSFET CH3 Synchronous Rectified Voltage Mode Step-Down CH4 Seletable Voltage Mode Step-Up/Down/Inverting CH5 Voltage Mode PWM LED Driver CH6 Voltage Mode Step-Up AT1397 21 20 19 18 17 16 15 14 13 Ordering Information Part Number Package QFN48,Green AT1397 N ： A:1397AN B:1397BN ： Date Code - For more marking information, contact our sales representative directly. Marking Aimtron reserves the right without notice to change this circuitry and specifications. 7F, No.9, Park Avenue II, Science-Based Industrial...