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NJU7630 Datasheet(PDF) 3 Page - New Japan Radio

Part No. NJU7630
Description  PWM control Step-Down switching regulator IC
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Manufacturer  NJRC [New Japan Radio]
Direct Link  http://www.njr.co.jp/index_e.htm
Logo NJRC - New Japan Radio

NJU7630 Datasheet(HTML) 3 Page - New Japan Radio

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NJU7630
- 3 -
Ver.2005-03-01
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
MAXIMUM RATINGS
UNIT
Supply Voltage
V+
+9
V
Output Pin Current
IO
±50
mA
Power Dissipation
PD
DMP8 :300
TVSP8 :320
mW
Operating Temperature Range
TOPR
-40 ~ +85
°C
Storage Temperature Range
TSTG
-40 ~ +125
°C
■RECOMMENDED OPERATING CONDITIONS (Ta=25°C)
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
Operating Voltage
V+
2.2
8
V
Oscillator Timing Resistor
RT
30
47
120
kΩ
Oscillation Frequency
fOSC
300
700
1,000
kHz
■ELECTRICAL CHARACTERISTICS (V+=3.3V, RT=47kΩ, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Under Voltage Lockout Block
ON Threshold Voltage
VT_ON
V+= L → H
1.9
2.0
2.1
V
OFF Threshold Voltage
VT_OFF
V+= H → L
1.8
1.9
2.0
V
Hysteresis Voltage
VHYS
60
100
mV
Soft Start Block
Soft Start Time
TSS
VT_ON → Duty=80%
8
16
24
ms
Short Circuit Protection Block
Input Threshold Voltage
VT_PC
FB Pin
0.95
1.00
1.05
V
Charge Current
ICHG
VSCP=0V
1.5
2
2.5
µA
Latch Mode
ON Threshold Voltage
VT_LA
SCP Pin
0.95
1.00
1.05
V
Latch Mode
OFF Threshold Voltage
VT_LAOFF
SCP Pin
0.2
0.45
0.7
V
Oscillator Block
RT Pin Voltage
VRT
-5%
0.5
+5%
V
Oscillation Frequency
fOSC
630
700
770
kHz
Oscillate Supply Voltage
Fluctuations
fDV
V+=2.2V ~ 8V
1
%
Oscillate Temperature
Fluctuations
fDT
Ta=-40
°C ~ +85°C
3
%


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