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PDF NJU7680 Data sheet ( Hoja de datos )
| Número de pieza | NJU7680 | |
| Descripción | 2ch switching regulator IC | |
| Fabricantes | NJR | |
| Logotipo |  |
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NJU7680www.DataSheet4U.com
2ch switching regulator IC
■GENERAL DESCRIPTION
The NJU7680 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.
Each channel has an on/off switch. Therefore, the power
sequence can be activated externally.
Internal soft-start function, dead time control and timer latch
function are included, and those functions can be easily controlled
by external component.
■PACKAGE OUTLINE
NJU7680V
NJU7680SED
(U.D.)
■FEATURES
● Step-Down, Step-Up/SEPIC circuit
● PWM switching control
● Operating Voltage
2.3V to 7V
● Wide Oscillator Range
300kHz to 1MHz
● Soft-Start Function
Internal: 4ms typ. or adjustable
● Channel ON/OFF Function
● Standby Quiescent Current
1µA max.
● Dead Time Control
● Timer Latch for Short Circuit Protection
● C-MOS Technology
● Package Outline
NJU7680V
: SSOP16
NJU7680SED : PCSP24-ED (U.D.)
Ver.2010-03-31
-1-
1 page  
NJU7680www.DataSheet4U.com
■ELECTRICAL CHARACTERISTICS (V+=VCE1=VCE2=3.3V, RT=47kΩ, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
Voltage Regulator Block
Regulator Output Voltage
Line Regulation
Load Regulation
Maximum Output Current
Temp Fluctuations
Under Voltage Lockout Block
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
Regulator Output Detection
ON Threshold Voltage
Regulator Output Detection
OFF Threshold Voltage
Regulator Output Detection
Hysteresis Voltage
Short Circuit Protection Block
Input Threshold Voltage 1
Input Threshold Voltage 2
Charge Current
Latch Mode
ON Threshold Voltage
Latch Mode
OFF Threshold Voltage
Soft Start Block
Soft Start Time 1
Soft Start Time 2
Oscillator Block
RT Pin Voltage
Oscillation Frequency
Oscillate Supply
Voltage Fluctuations
Oscillate Temperature
Fluctuations
Standby RT Terminal
Resistance
VREG
VREG_LINE
VREG_LOAD
IREG_MAX
VREG_TC1
V+=2.2 ∼ 7V
IREG=0 ∼ 2mA
VREG=1.9V
Ta=-40 ∼ +85°C
VT_ON
VT_OFF
VHYS
VT_ON_REG
V+= L → H
V+= H → L
VREG = L → H
VT_OFF_REG VREG = H → L
VHYS_REG
VT_PC1
VT_PC2
ICHG
VT_LA
FB1 Pin
FB2 Pin
VSCP=0V
SCP Pin
VT_LAOFF SCP Pin
TSS1
TSS2
VT_ON → Duty1=80%
VT_ON → Duty2=80%
VRT
fOSC
fDV
fDT
RT_STB
V+=2.2 ~ 7V
Ta=-40°C ~ +85°C
1.97
–
-10
4
–
2.1
2.0
60
1.6
1.5
60
0.95
0.95
1.5
0.90
0.35
3
3
-5%
630
–
–
–
TYP.
2.0
±5
-1
–
±0.5
2.2
2.1
100
1.7
1.6
100
1.00
1.00
2
1.00
0.6
4
4
0.5
700
1
3
2
MAX. UNIT
2.03 V
±15 mV
– mV
– mA
–%
2.3 V
2.2 V
– mV
1.8 V
1.7 V
– mV
1.05 V
1.05 V
2.5 µA
1.10 V
0.85 V
6 ms
6 ms
+5% V
770 kHz
–%
–%
– MΩ
Ver.2010-03-31
-5-
5 Page 
■TYPICAL CHARACTERISTICS
Quiescent Current vs. Temperature
2 (V+=3.3V, RT=47kΩ)
1.5
1 IDD1
0.5 IDD2
0
-50 -25 0 25 50 75 100 125
Ambient Temperature Ta (oC)
NJU7680www.DataSheet4U.com
Standby Current vs. Temperature
3 (V+=3.3V, RT=47kΩ)
2.5
IDD_STB1: VCE1=VCE2=0V
IDD_STB2: RT=OPEN
2
1.5
IDD_STB1
1
0.5
0
-50
IDD_STB2
-25 0 25 50 75 100 125
Ambient Temperature Ta (oC)
Under Voltage Lockout Block
2.4 vs. Temperature
2.2 VT_ON
2 VT_OFF
1.8 VT_ON_REG
1.6
1.4
-50
VT_OFF_REG
-25 0 25 50 75 100 125
Ambient Temperature Ta (oC)
Ver.2010-03-31
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
- 11 -
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NJU7680.PDF ] | |
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