NJU7632 PDF даташит
Спецификация NJU7632 изготовлена «JRC» и имеет функцию, называемую «Switching Regulator IC / TVSP8». |
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Детали детали
Номер произв | NJU7632 |
Описание | Switching Regulator IC / TVSP8 |
Производители | JRC |
логотип |
9 Pages
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NJU7632
Step-Down switching regulator IC with standby function
■GENERAL DESCRIPTION
NJU7632 is a high speed low voltage operation switching
regulator control IC. It features a totem pole driver that can
directly drive an external MOS-FET.
Internal soft-start function, dead time control and timer latch
function are included, requiring no external components. All
parameters can be optimized by additional external
components for design flexibility. The standby function realizes
low power consumption at the time of standby.
■PACKAGE OUTLINE
NJU7632RB1
■FEATURES
■PRODUCT VARIATION
● PWM switching control
● Standby Function
NJU763x**
● Operating Voltage
2.2V to 8V
Standby Terminal
● Wide Oscillator Range
300kHz to 1MHz
● Maximum Duty Cycle
100%
NJU7632
● Quiescent Current
Operating :800µA typ.
Standby :1µA max.
Standby Function
● Soft-Start Function
Internal :16ms typ. or adjustable
NJU7630
● Dead Time Control
PWM Control
● Timer Latch for Short Circuit Protection
● C-MOS Technology
** Planning
● Package Outline
NJU7632RB1 : TVSP8
■PIN CONFIGURATION
1
2
3
4
NJU7632RB1
8
7
6
5
PIN FUNCTION
1. OUT
2. V+
3. FB
4. IN-
5. SCP
6. DTC
7. RT
8. GND
Ver.2006-07-12
-1-
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NJU7632
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■BLOCK DIAGRAM
FB
IN-
1V Vref
V+
ER⋅AMP
Soft Start
Latch
UVLO
SCP
1V
2µA
SCP
2kΩ
0.5
RT
A
1V
DTC
0.8V
0.2V
OSC
0.5V
PW M
Buffer
OUT
Standby
ON/OFF
RT
RT
V+ GND
RP
ON/OFF
High: ON
Low : OFF (Standby)
-2-
Ver.2006-07-12
No Preview Available ! |
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■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
Supply Voltage
Output Pin Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V+
IO
PD
TOPR
TSTG
MAXIMUM RATINGS
+9
±50
TVSP8 :320
-40 ~ +85
-40 ~ +125
UNIT
V
mA
mW
°C
°C
NJU7632
■RECOMMENDED OPERATING CONDITIONS (Ta=25°C)
PARAMETER
Operating Voltage
Oscillator Timing Resistor
Oscillation Frequency
SYMBOL
V+
RT
fOSC
MIN.
2.2
30
300
TYP.
–
47
700
MAX.
8
120
1,000
UNIT
V
kΩ
kHz
■ELECTRICAL CHARACTERISTICS (V+=3.3V, RT=47kΩ, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
Under Voltage Lockout Block
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
Soft Start Block
Soft Start Time
Short Circuit Protection Block
Input Threshold Voltage
Charge Current
Latch Mode
ON Threshold Voltage
Latch Mode
OFF Threshold Voltage
Oscillator Block
RT Pin Voltage
Oscillation Frequency
Oscillate Supply Voltage
Fluctuations
Oscillate Temperature
Fluctuations
Standby RT Terminal
Resistance
VT_ON
VT_OFF
VHYS
V+= L → H
V+= H → L
TSS VT_ON → Duty=80%
VT_PC
ICHG
VT_LA
FB Pin
VSCP=0V
SCP Pin
VT_LAOFF SCP Pin
VRT
fOSC
fDV
fDT
RT_STB
V+=2.2V ~ 8V
Ta=-40°C ~ +85°C
MIN. TYP. MAX. UNIT
1.9 2.0 2.1 V
1.8 1.9 2.0 V
60 100
– mV
8 16 24 ms
0.95 1.00 1.05 V
1.5 2
2.5 µA
0.95 1.00 1.05 V
0.2 0.45 0.7 V
-5% 0.5 +5% V
630 700 770 kHz
– 1 –%
– 3 –%
– 2 – MΩ
Ver.2006-07-12
-3-
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Номер в каталоге | Описание | Производители |
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