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NJW4160 Datasheet(PDF) 3 Page - New Japan Radio

Part No. NJW4160
Description  Switching Regulator IC for Buck Converter
Download  22 Pages
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Manufacturer  NJRC [New Japan Radio]
Direct Link  http://www.njr.co.jp/index_e.htm
Logo NJRC - New Japan Radio

NJW4160 Datasheet(HTML) 3 Page - New Japan Radio

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NJW4160
- 3 -
Ver.2014-04-01
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, V+=12V, VEN is connected to V
+ via 200k pull-up, CT=470pF, Ta=25 C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Oscillator Block
Oscillation Frequency
fOSC
CT=470pF
270
300
330
kHz
Charge Current
Ichg
180
200
220
A
Discharge Current
Idis
180
200
220
A
Voltage amplitude
VOSC
0.6
V
Frequency Supply Voltage
Deviation
fDV
V+=3V to 35V
1
%
Frequency Temperature
Deviation
fDT
Ta=-40 C to +85 C
5
%
Oscillation Frequency
(Low Frequency Control)
fOSC_LOW
VIN-=0.3V, VFB=0.7V
100
kHz
Error Amplifier Block
Reference Voltage
VB
-1.0%
0.8
+1.0%
V
Input Bias Current
IB
-0.1
+0.1
A
Open Loop Gain
AV
80
dB
Gain Bandwidth
GB
1
MHz
Output Source Current
IOM+
VFB=1V, VIN-=0.7V
50
90
140
A
Output Sink Current
IOM-
VFB=1V, VIN-=0.9V
6
13
20
mA
PWM Comparate Block
Input Threshold Voltage
(FB pin)
VT_0
Duty=0%, VIN-=0.6V
0.32
0.4
0.48
V
VT_50
Duty=50%, VIN-=0.6V
0.63
0.7
0.77
V
Maximum Duty Cycle
MAXDUTY
VFB=1.2V
100
%
Current Limit Detection Block
Current Limit Detection
Voltage
VIPK
95
120
145
mV
Delay Time
TDELAY
100
ns
Output Block
Output High Level
ON Resistance
ROH
IO=-50mA
3.5
7
Output Low Level
ON Resistance
ROL
IO=+50mA
9
Output Sink Current
IOL
OUT pin= V+- 4.8V
20
30
45
mA
Output pin Limiting Voltage
VOLIM
V+-5.5V V+-5.35V V+-5.0V
V
Under Voltage Lockout Block
ON Threshold Voltage
VT_ON
V+= L → H
2.65
2.8
2.95
V
OFF Threshold Voltage
VT_OFF
V+= H → L
2.4
2.55
2.7
V


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