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N3004 数据表(PDF) 4 Page - List of Unclassifed Manufacturers |
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N3004 数据表(HTML) 4 Page - List of Unclassifed Manufacturers |
4 / 7 page 4 5 Bit Programmable Synchronous Buck Converter with Dual LDOs NIKO-SEM N3004 JAN-10-Y02 PIN DEFINITIONS Pin # Pin Name Pin Function Description 1 CT The oscillator frequency is programmed by connecting an external cap- acitor from this pin to GND. Operation in range of 50 KHz to 500 KHz. 2 LIN1 Gate drive output regulator, Linear 1 for GTL+ or Clock supply. 3 VFB1 Feedback input for LIN1. 4 VFB2 Feedback input for LIN2. 5 V5 5V supply voltage. 6 PGD* Open collector logic output, high if VO within 10% of set point. 7 CS- Current sense input (Negative), connected to the Source of the power MOSFET for the core supply. 8 CS+ Current sense input (Positive), connected to the Drain of the power MOS- FET for the core supply. An external resistor programs the C.S threshold depending on the RDS(ON) of the power MOSFET. An external capacitor is placed in parallel with the programming resistor to provide high frequency noise filtering. 9 HDRV High side driver output. 10 GND This pin serves as the ground pin and must be connected directly to the ground plane. A high frequency capacitor (0.1 to 1μF) must be connected directly from V5 and V12 pins to this pin for noise free operation. 11 LDRV Low side driver output. 12 V12 12V supply voltage for LINEAR section. A high frequency capacitor (0.1 to 1μF) must be connected directly from this pin to GND pin in order to supply the peak current to the power MOSFET during the transients. 13 SS This pin provides the soft start for the switching regulator. An internal current source charges an external capacitor that is connected from this pin to the GND which ramps up the outputs of the switching regulator, preventing the outputs from overshooting as well as limiting the input current. The second function of the soft start cap is to provide long off time (HICCUP) for the synchronous MOSFET during current limiting. 14 VFB3 Feedback input for VCORE. 15 VID4* Programming input (MSB). 16 VID3* Programming input. 17 VID2* Programming input. 18 VID1* Programming input. 19 VID0* Programming input (LSB). 20 LIN2 Gate drive output regulator, Linear 2 for GTL+ or Clock supply. * : All logic level inputs and outputs are open collector TTL compatible. |
类似零件编号 - N3004 |
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类似说明 - N3004 |
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