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NX2307 데이터시트 PDF




Microsemi에서 제조한 전자 부품 NX2307은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 NX2307 자료 제공

부품번호 NX2307 기능
기능 SINGLE SUPPLY 12V SYNCHRONOUS PWM CONTROLLER
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NX2307 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.



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NX2307 데이터시트, 핀배열, 회로
NX2307
SINGLE SUPPLY 12V SYNCHRONOUS PWM CONTROLLER
ADVANCE DATA SHEET
Pb Free Product
DESCRIPTION
FEATURES
The NX2307 controller IC is a compact synchronous Buck
controller IC with 8 lead SOIC8 package designed for
step down DC to DC converter applications. The NX2307
n
n
n
12V Gate Driver
Bus voltage operation from 7V to 15V
Fixed hiccup current limit by sensing Rdson of
controller is optimized to convert single supply 12V bus
voltage to as low as 0.8V output voltage. Internal UVLO
n
Synchronous MOSFET
Internal 300kHz
keeps the regulator off until the supply voltage exceeds n Internal Digital Soft Start Function
7V where internal digital soft starts get initiated to ramp n Adaptive deadband Control
up output. The NX2307 employs fixed current limiting n Shut Down via pulling COMP pin
followed by HICCUP feature. Other features includes: n Pb-free and RoHS compliant
12V gate drive capability , Converter Shutdown by pull-
ing COMP pin to Gnd, Adaptive dead band control.
APPLICATIONS
n Graphic Card on board converters
n Vddq Supply in mother board applications
n On board DC to DC such as
12V to 3.3V, 2.5V or 1.8V
n Set Top Box and LCD Display
TYPICAL APPLICATION
Vin
+12V
M3
HI=SD
C7
200pF
L2 1uH
C4
100uF
R6
10
C3
1uF 5
Vcc
R4
5.36k
7 COMP
D1 MBR0530T1
1
BST
Hdrv 2
SW 8
C6
0.1uF
C2
6.8nF
6 FB
Ldrv 4
Gnd
3
C5
1uF
M1
IRFR3706
L1 1.5uH
R1
M2 1.43k
IRFR3706
C1
2.7nF
Cin
16SVP180M
16V,180uF
Vout
+1.8V 10A
Co
4SEPC560M
560uF,7mohm
R2
10k
R3
8k
Device
NX2307CSTR
Figure1 - Typical application of NX2307
ORDERING INFORMATION
Temperature
0 to 70oC
Package
SOIC - 8L
Frequency
300kHz
Pb-Free
Yes
Rev. 3.2
06/22/06
1




NX2307 pdf, 반도체, 판매, 대치품
NX2307
PIN DESCRIPTIONS
PIN #
5
PIN SYMBOL
PIN DESCRIPTION
VCC
Power supply voltage. A high freq 1uF ceramic capacitor is placed as close as
possible to and connected to this pin and ground pin. The maximum rating of this
pin is 16V.
This pin supplies voltage to high side FET driver. A high freq minimum 0.1uF
1 BST ceramic capacitor is placed as close as possible to and connected to this pin
and SW pin.
3 GND Power ground.
This pin is the error amplifiers inverting input. This pin is connected via resistor
6 FB divider to the output of the switching regulator to set the output DC voltage.
7 COMP This pin is the output of the error amplifier and together with FB pin is used to
compensate the voltage control feedback loop. This pin is also used as a shut down
pin. When this pin is pulled below 0.2V, both drivers are turned off and internal soft
start is reset.
This pin is connected to source of high side FETs and provide return path for the
8 SW high side driver. It is also used to hold the low side driver low until this pin is
brought low by the action of high side turning off. LDRV can only go high if SW is
below 1V threshold .
2 HDRV High side gate driver output.
4 LDRV Low side gate driver output.
Rev. 3.2
06/22/06
4

4페이지










NX2307 전자부품, 판매, 대치품
NX2307
Bill of Materials
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Quantity
2
2
1
1
1
1
1
11
1
1
1
1
1
2
1
1
1
1
2
1
2
2
1
1
1
1
1
1
1
Referenc e
VOUT,BUS
C5B,C2
C4
C5A
C6
C7
C8
M3,D3,M4,R5,C9,R10,C10,
R11,C11,R12,R13
C12
C13
C19
C10
D1
JVOUT,JS W
J1
J12V
L1
L2
M1,M2
PWR
R2,R20
R3,R4
R6
R7
R8
R9
R15
R24
U1
Value
CON2
1u
0.1u
16SVPA180M
100u/16V
6800p
4SEPC560M
OP
.1u
2700p
470pF
200p
M B R0530T1
SCOPE TP
ATX con
ATX-12V
DO3316P-102
DO5010P-152HC
IRF3706
LED
10
0
5.49k
1.43k
10k
8.06k
2k
1k
NX2307-SOIC8
Manufacture
SANYO
SANYO
Tek t ronic s
Coilc raft
Coilc raft
International Rectifier
NEXSEM INC.
Rev. 3.2
06/22/06
7

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