NJW4170
Current Mode Control High Speed Frequency
Internal 1A MOSFET Switching Regulator IC for Buck Converter
GENERALDESCRIPTION
■ PACKAGE OUTLINE
The NJW4170 is a high speed oscillating frequency buck
converter with 40V/1A MOSFET. Current mode control and built-in
phase compensation circuit minimize external parts and contribute
to using a Low ESR Output Capacitor(MLCC) within wide input
range from 4.5V to 40V. Therefore, the NJW4170 can realize
downsizing of applications.
NJW4170U2
Also, it has a soft start function, an external clock synchronization
function, an over current protection and a thermal shutdown circuit.
Over 2MHz of Switching frequency can avoid interference with
theAM radio frequency.
It is suitable for supplying power to a CarAccessory,Audio
Automation Equipment, Industrial Instrument and so on.
NJW4170KV1
FEATURES
Oscillating Frequency
2.4MHz typ. (Aver.)
2.1MHz typ. (B ver.)
80ns typ.(Aver.)
Minimum ON time
85ns typ.(B ver.)
Current mode Control
External Clock Synchronization
Wide Operating Voltage Range
Switching Current
4.5V to 40V
1.4Amin.
PWM Control
Built-in Compensation Circuit
Correspond to Ceramic Capacitor (MLCC)
Soft Start Function
4ms typ.
UVLO (Under Voltage Lockout)
Over Current Protection (Hiccup type)
Thermal Shutdown Protection
Standby Function
Package Outline
NJW4170U2 : SOT-89-5
NJW4170KV1 : DFN8-V1(ESON8-V1)
PRODUCTCLASSIFICATION
Oscillating
Frequency
Operating
Temperature Range
General Spec.
-40 C to +125 C
General Spec.
-40 C to +125 C
General Spec.
-40 C to +125 C
Part Number
NJW4170U2-A
NJW4170KV1-A
NJW4170U2-B
Version
Package
A
A
B
2.4MHz typ.
2.4MHz typ.
2.1MHz typ.
SOT-89-5
DFN8-V1
(ESON8-V1)
SOT-89-5
Ver.2016-01-25
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