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PDF NJW4132 Data sheet ( Hoja de datos )
| Número de pieza | NJW4132 | |
| Descripción | (Automotive) Switching Regulator IC | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Automotive NJW4132
Switching Regulator IC for Boost Converter
Current Mode Control with 45V/1.75A MOSFET
■FEATURES
■GENERAL DESCRIPTION
Current Mode Control
External Clock Synchronization
Wide Operating Voltage Range 4.55V to 40V
Switching Current
1.75A min.
PWM Control
Built-in Compensation Circuit
Correspond to Ceramic Capacitor (MLCC)
Oscillating Frequency 2.0MHz typ. (C ver.)
Soft Start Function
10ms typ.
UVLO (Under Voltage Lockout)
Over Current Protection (Hiccup type)
Thermal Shutdown Protection
This SprtoadnudcbtymFeuentscttihoenreliability level required by AEC-Q100.
AEC-Q100
This product meets the reliability level required by
AEC-Q100.
Package Outline NJW4132U2 : SOT-89-5-2
The NJW4132 is a boost converter with 45V/1.75A
MOSFET. It corresponds to high oscillating frequency and
Low ESR Output Capacitor (MLCC) within wide input
range from 4.5V to 40V.
Therefore, the NJW4132 can realize downsizing of
applications with a few external parts so that adopts
current mode control.
Also, it has a soft start function, external clock
synchronization, over current protection and thermal
shutdown circuit.
■APPLICATION
Automotive
Factory automation
■BLOCK DIAGRAM
V+
EN/SYNC
High: ON
Low : OFF(Standby)
100k
UVLO
Enable
(Standby)
SYNC
Low Frequency
Control
IN-
Soft Start
OSC
ERAMP
Vref
1V
SLOPE
COMP.
SW
TSD
SQ
R
Buf f er
PWM
OCP
CURRENT
SENSE
GND
Ver.1 http://www.njr.com/ - 1 -
1 page  
Automotive NJW4132
■ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
(Unless otherwise noted, V+=VEN./SYNC=12V, Ta=25C)
TEST CONDITION
MIN. TYP. MAX. UNIT
Standby Control Block
ON Control Voltage
OFF Control Voltage
Input Bias Current
(EN/SYNC pin)
VON
VOFF
IEN
VEN/SYNC= L → H
VEN/SYNC= L → H,
Ta=-40ºC to +125 ºC
VEN/SYNC= H → L
VEN/SYNC= H → L,
Ta=-40ºC to +125 ºC
VEN/SYNC=12V
VEN/SYNC=12V,
Ta=-40ºC to +125 ºC
1.6 – V+
1.6 – V+ V
0 – 0.5
0
–
V
0.5
– 250 400 A
– – 450 A
General Characteristics
Quiescent Current
Standby Current
IDD
IDD_STB
RL=no load, VIN-=0.9V
RL=no load, VIN-=0.9V
Ta=-40ºC to +125 ºC
VEN/SYNC=0V
VEN/SYNC=0V, Ta=-40ºC to +125 ºC
–
–
–
–
3.5 4.0
–
mA
5.0
–1
– 1 A
■THERMAL CHARACTERISTICS
PARAMETER
SYMBOL
VALUE
UNIT
Junction-to-ambient
thermal resistance
θja
200 (*3)
°C /W
52 (*4)
Junction-to-Top of package
characterization parameter
ψjt
43 (*3)
19 (*4)
°C /W
(*3): Mounted on glass epoxy board. (76.2×114.3×1.6mm: based on EIA/JDEC standard, 2Layers)
(*4): Mounted on glass epoxy board. (76.2×114.3×1.6mm: based on EIA/JDEC standard, 4Layers)
(For 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hall to a board based on JEDEC standard JESD51-5)
Ver.1 http://www.njr.com/ - 5 -
5 Page 
■APPLICATION MANUAL
Automotive NJW4132
■PIN DESCRIPTIONS
PIN
NUMBER
1
2
3
4
5
PIN NAME
SW
GND
IN-
EN/SYNC
V+
FUNCTION
Switch Output pin of Power MOSFET
GND pin
Output Voltage Detecting pin
Connects output voltage through the resistor divider tap to this pin in order to voltage
of the IN- pin become 1.0V.
Standby Control pin
The EN/SYNC pin internally pulls down with 100k. Normal Operation at the time of
High Level. Standby Mode at the time of Low Level or OPEN.
Moreover, it operates by inputting clock signal at the oscillatory frequency that
synchronized with the input signal.
Power Supply pin for Power Line
Ver.1
http://www.njr.com/
- 11 -
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet NJW4132.PDF ] | |
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