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PDF NJW4800 Data sheet ( Hoja de datos )
| Número de pieza | NJW4800 | |
| Descripción | 30V/4A Half Bridge Driver | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJW4800 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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NJW4800
30V/4A Half Bridge Driver
GENERAL DESCRIPTION
The NJW4800 is a general purpose, half bridge power driver
capable of supplying 4A current. The internal gate driver drives
high-side/low-side power MOSFET; therefore, it has fast switching.
Additionally, it has protection features such as over current
protection and thermal shutdown.
And in the case of failure, it can output a fault flag.
It is suitable for power switching applications of DSP/micro
controller.
■ PACKAGE OUTLINE
NJW4800GM1
FEATURES
● Output Switch Current ±4A
● Operating Voltage
7.5V to 30V
● Up to 1.2MHz Switching Frequency
● Thermal Shut Down
● Over Current Protection
● Under Voltage Lockouts
● Fault Indicator Output
● Stand-by Current
IQOFF =3µA typ.
● High Heat Radiation Package
● Package Outline
HSOP8
http://www.DataSheet4U.net/
PIN CONFIGURATION
18
27
36
45
Exposed PAD on
backside connect to GND
PIN FUNCTION
1. PWM
2. VDD
3. OUT
4. GND
5. BS
6. STBY
7. REG
8. FLT
Ver.2010-09-29
-1-
datasheet pdf - http://www.DataSheet4U.net/
1 page  
NJW4800
ELECTRICAL CHARACTERISTICS (Unless otherwise noted, V+=12V, VSTBY=0V, CBS=0.1µF, CREG=1µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Internal Power Supply Circuit
Output Voltage 1
Line Regulation
Load Regulation
REG pin Output Current
VREG1
∆VREG–VDD
∆VREG–IO
IOREG
IREG=0mA
V+=8 ∼ 30V, IREG=0mA
IREG=0 ∼ 20mA
VREG1×0.95,
Input signal=500kHz
4.75 5 5.25 V
– 2 20 mV
– 20 50 mV
30 –
– mA
Fault Function (FLT pin)
Low Level Output Voltage
OFF Leak Current
VLFLT
IOLEAKFLT
IFLT=500µA
VFLT=5.5V
– 0.25 0.5 V
– – 1 µA
PIN OPERATION TABLE
INPUT
OUTPUT
PWM STBY
VDD
FLT
High-side
SW
Low-side
SW
Mode
LL
HL
LH
V+ ≥ VRUVLO
V+ ≥ VRUVLO
–
ON OFF ON Normal
ON
ON (*3)
OFF Normal
OFF OFF OFF Stand-by
HH
–
OFF OFF OFF Stand-by
LL
HL
V+ < VDUVLO
V+ < VDUVLO
OFF OFF OFF UVLO
OFF OFF OFF UVLO
(*3) If PWM=H continues by tHPWM or more and is input, it becomeshttp://www.DataSheet4U.net/ low-side SW=ON during tHPWM/128.
INPUT
Tj IOUT
OUTPUT
FLT
High-side
SW
Low-side
SW
Mode
Tj >150°C
–
OFF OFF OFF TSD
–
IOUT ≥ IOM
OFF
OFF
OFF OCP
Ver.2010-09-29
-5-
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
NJW4800
PIN DESCRIPTION
PIN
NUMBER
PIN NAME
1 PWM
2 VDD
3 OUT
4 GND
5 BS
6 STBY
7 REG
8 FLT
–
Exposed
PAD
FUNCTION
PWM Signal Input Terminal
As for Control Logic, Refer to PIN OPERATION TABLE (page.5)
Power Supply Terminal
You should connect capacitor (AL and MLCC) for reducing Input Impedance.
Output Terminal
The High-side/Low-side Switch are Limited to 5.5A(typ.) by Over Current
Protection Circuit.
Ground Terminal
Boot Strap Output Terminal
Boot Strap Output drives the High-side Switch. You should connect capacitor
larger than 0.1µF between BS Terminal (5-pin) and Out Terminal (3-pin).
Standby Terminal
NJW4800 becomes standby status by High Level
NJW4800 operates by Low Level
Built-in Regulator (5V) Output Terminal
You should connect capacitor larger than 1µF for stable output.
Fault Signal Output Terminal
It is Open Drain Output Type. You should connect through Pull-up Resister to
REG Terminal (7-pin) or External Power Supply.
It outputs Low Level under normal operating condition and outputs High Level
under Abnormal Conditions.
Connected to 4pin (Ground Terminal)
http://www.DataSheet4U.net/
Ver.2010-09-29
- 11 -
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet NJW4800.PDF ] | |
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