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N3004 数据表(PDF) 4 Page - List of Unclassifed Manufacturers

部件名 N3004
功能描述  5 Bit Programmable Synchronous Buck Converter with Dual LDOs
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制造商  ETC [List of Unclassifed Manufacturers]
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标志 ETC - List of Unclassifed Manufacturers

N3004 数据表(HTML) 4 Page - List of Unclassifed Manufacturers

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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.


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