|
|
PDF NJW4160 Data sheet ( Hoja de datos )
| Número de pieza | NJW4160 | |
| Descripción | Switching Regulator IC | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de NJW4160 (archivo pdf) en la parte inferior de esta página. Total 22 Páginas | ||
|
No Preview Available !
NJW4160
Switching Regulator IC for Buck Converter
External MOSFET driving
GENERAL DESCRIPTION
The NJW4160 is a MOSFET Drive switching regulator IC for
Buck Converter that operates wide input range from 3.0V to 35V.
It can provide large current application because of built-in highly
effective Pch MOSFET drive circuit.
Built-in pulse-by-pulse current detecting type over current
protection limits the output current at over load.
It is suitable for logic voltage generation from high voltage that
Car Accessory, Office Automation Equipment, Industrial
Instrument and so on.
■ PACKAGE OUTLINE
NJW4160R
(MSOP8(VSP8))
NJW4160M
(DMP8)
FEATURES
Pch MOSFET Driving
Wide Operating Voltage Range
PWM Control
Wide Oscillating Frequency
Over Current Protection
UVLO (Under Voltage Lockout)
Standby Function
Package Outline
Driving Voltage V+-5.35V(typ.)
3V to 35V
50kHz to 1MHz
NJW4160M: DMP8
NJW4160R: MSOP8(VSP8)
*MEETJEDEC MO-187-DA
PIN CONFIGURATION
1
2
3
4
NJW4160R
NJW4160M
8
7
6
5
PIN FUNCTION
1. OUT
2. SI
3. V+
4. EN
5. IN-
6. FB
7. CT
8. GND
Ver.2014-04-01
-1-
1 page  
CHARACTERISTICS
Oscillation Frequency vs. Supply Voltage
310 (CT=470pF, Ta=25oC)
305
300
295
290
0
10 20 30
Supply Voltage V+ (V)
40
Quiescent Current vs. Supply Voltage
1.6 (RL=no load, VIN-=VFB=0.7, Ta=25oC)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0 10 20 30 40
Supply Voltage V+ (V)
EN pin Current vs.EN pin Voltage
(V+=12V, Ta=25oC)
30
25
20
15
10
5 VEN_OPEN
Sink
0
-5 Source
VZ_EN
-10
0123456
EN pin Volatage VEN (V)
Ver.2014-04-01
NJW4160
Reference Voltage vs. Supply Voltage
0.81
(Ta=25oC)
0.805
0.8
0.795
0.79
0
10 20 30
Supply Voltage V+ (V)
40
Error Amplifier Block
Voltage Gain, Phase vs. Frequency
60 (V+=12V, Gain=40dB, Ta=25 oC) 180
45
Gain
30
Phase
135
90
15 45
00
0.1 1 10 100 1000 10000
Frequency f (kHz)
-5-
5 Page 
NJW4160 ApplicationNJMWan4u16a0l
Technical Information
Description of Block Features (Continued)
Power Supply, GND pin (V+, GND)
In line with MOSFET drive, current flows into the IC according to frequency. If the power supply impedance
provided to the power supply circuit is high, it will not be possible to take advantage of IC performance due to input
voltage fluctuation. Therefore insert a bypass capacitor close to the V+ pin – the GND pin connection in order to
lower high frequency impedance.
Under Voltage Lockout Function (UVLO)
The UVLO circuit operating is released above V+=2.8V(typ.) and IC operation starts. When power supply voltage
is low, IC does not operate because the UVLO circuit operates. There is 250mV width hysteresis voltage at rise and
decay of power supply voltage. Hysteresis prevents the malfunction at the time of UVLO operating and releasing.
Enable Function (Enable Control)
With the voltage of the EN pin, the operation of NJW4160 can be set as in Table1.
Table1. EN pin voltage and NJW4160 status
State of NJW4160
Condition of applied
voltage to EN pin
1.6V to VZ_EN*
*Internal Zener Voltage
Normal Mode
Example of connecting EN pin
The EN pin voltage is clamped to VZ_EN=5.2V (typ.) with the
internal Zener diode.
You should adjust the flow current into the Zener diode to less
than 500 A.
V+
REN EN
less than 500 A
5.2V
V+
Enable ON/OFF
Control
When the EN pin is open, VEN_OPEN=1.8V (typ.) is generated
with the internal current source and two diodes.
The EN pin OPEN
EN
Generate 1.8V
V+
Enable ON/OFF
Control
Standby Mode
0V to 0.5V
Connect to GND
EN
V+
Enable ON/OFF
Control
Ver.2014-04-01
- 11 -
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet NJW4160.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| NJW4160 | Switching Regulator IC | New Japan Radio |
| NJW4161 | MOSFET Drive Switching Regulator IC | New Japan Radio |
| NJW4162A | 2channel MOSFET Drive Switching Regulator IC | New Japan Radio |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |