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NJW4170KV1-A Datasheet(PDF) 1 Page - New Japan Radio

Part # NJW4170KV1-A
Description  Current Mode Control High Speed Frequency Internal 1A MOSFET Switching Regulator IC for Buck Converter
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Manufacturer  NJRC [New Japan Radio]
Direct Link  http://www.jrc.co.jp/eng/index.html
Logo NJRC - New Japan Radio

NJW4170KV1-A Datasheet(HTML) 1 Page - New Japan Radio

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NJW4170
- 1 -
Ver.2016-01-25
Current Mode Control High Speed Frequency
Internal 1A MOSFET Switching Regulator IC for Buck Converter
GENERAL DESCRIPTION
■ PACKAGE OUTLINE
FEATURES
Oscillating Frequency
2.4MHz typ. (A ver.)
2.1MHz typ. (B ver.)
Minimum ON time
80ns typ.(A ver.)
85ns typ.(B ver.)
Current mode Control
External Clock Synchronization
Wide Operating Voltage Range
4.5V to 40V
Switching Current
1.4A min.
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)
PRODUCT CLASSIFICATION
Part Number
Version
Oscillating
Frequency
Package
Operating
Temperature Range
NJW4170U2-A
A
2.4MHz typ.
SOT-89-5
General Spec.
-40 C to +125 C
NJW4170KV1-A
A
2.4MHz typ.
DFN8-V1
(ESON8-V1)
General Spec.
-40 C to +125 C
NJW4170U2-B
B
2.1MHz typ.
SOT-89-5
General Spec.
-40 C to +125 C
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.
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
the AM radio frequency.
It is suitable for supplying power to a Car Accessory, Audio
Automation Equipment, Industrial Instrument and so on.
NJW4170U2
NJW4170KV1


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