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參數(shù)資料
| 型號(hào)： | NX2117ACUTR |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO10 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-10 |
| 文件頁(yè)數(shù)： | 1/14頁(yè) |
| 文件大?。?/td> | 405K |
| 代理商： | NX2117ACUTR |
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NX2116/2116A/2116B/2117/2117A
1
Rev. 3.0
03/14/06
TYPICAL APPLICATION
DESCRIPTION
The NX2116/2117 family of products are synchronous
Buck controller IC designed for step down DC to DC
converter applications. They are optimized to convert
bus voltages from 2V to 25V to as low as 0.8V output
voltage. The NX2116 and 2117 offer an Enable pin that
can be used to program the converter's start up voltage
using an external divider from bus voltage. These prod-
ucts operate at fixed internal frequency of 300kHz, ex-
cept that NX2116A operates at 600kHz and 2116B at
1MHz frequency. These products employ loss-less cur-
rent limiting protection by sensing the Rdson of syn-
chronous MOSFET followed by latch out feature. Feed-
back under voltage triggers Hiccup.
Other features are; 5V gate drive, Power good indica-
tor, Adaptive deadband control, Internal digital soft start;
Vcc undervoltage lock out and shutdown capability via
the enable pin or comp pin.
n Bus voltage operation from 2V to 25V
n Power Good indicator available in NX2116
n Fixed 300kHz, 600kHz and 1MHz for NX2116 and
300kHz, 600kHz for NX2117 family.
n Internal Digital Soft Start Function
n Less than 50 nS adaptive deadband
n Enable pin to program BUS UVLO for NX2116/2117
n Programmable current limit triggers latch out by
sensing Rdson of
Synchronous MOSFET
n No negative spike at Vout during startup and
shutdown
ORDERING INFORMATION
FEATURES
SYNCHRONOUS PWM CONTROLLER WITH
CURRENT LIMIT, POWER GOOD & OVER VOLTAGE
APPLICATIONS
n Graphic Card on board converters
n Memory Vddq Supply
n On board DC to DC such as 2V to 3.3V, 2.5V or
1.8V
n ADSL Modem
PRELIMINARY DATA SHEET
Device
Temperature
Package
Frequency
Pb-Free
NX2116CMTR
0 to 70oC
MLPD-10L
300kHz
Yes
NX2116ACMTR
0 to 70o C
MLPD-10L
600kHz
Yes
NX2116BCMTR
0 to 70o C
MLPD-10L
1MHz
Yes
NX2117CUTR
0 to 70o C
MSOP-10L
300kHz
Yes
NX2117ACUTR
0 to 70o C
MSOP-10L
600kHz
Yes
Figure 1 - Typical application of 2116
C5
1uF
Cin
Vin1
+12V
D1
M1
M2
L1 1uH
C2
1.5nF
C7
0.1uF
R2
16k
17.4k
R4
20k
R1
33pF
C1
68k
R5
12.4k
R6
Vcc
BST
Fb
Comp
SW
Hdrv
Ldrv
4
2
1
10
3
7
8
NX2116A
EN
6
C4
1uF
10
R3
+1.8V,9A
Vout
270uF,18mohm
2x (220uF,12mohm)
Co
Gnd
11
L2 1uH
C3
39uF
OFF
ON
2N3904
10k
R8
R7
10k
C8
1nF
2.61k
R9
Pgood
1k
R10
+5V
5
OCP
9
3.7k
R11
Vin2
+5V
MBR0530T1
Pb Free Product
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NX2117CUTR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE |
| NX2119 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119A | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119ACSTR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
| NX2119ACUTR | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION |
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