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NJU7680 PDF даташит

Спецификация NJU7680 изготовлена ​​​​«NJR» и имеет функцию, называемую «2ch switching regulator IC».

Детали детали

Номер произв NJU7680
Описание 2ch switching regulator IC
Производители NJR
логотип NJR логотип 

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NJU7680 Даташит, Описание, Даташиты
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-









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NJU7680 Даташит, Описание, Даташиты
NJU7680
www.DataSheet4U.com
PIN CONFIGURATION
<SSOP16 package>
1
2
3
4
5
6
7
8
(Top View)
NJU7680V
16
15
14
13
12
11
10
9
PIN FUNCTION
1. SCP
2. CE1
3. CE2
4. FB2
5. IN-2
6. V+
7. DTC2
8. OUT2
9. OUT1
10. DTC1
11. GND
12. GND
13. RT
14. VREG
15. IN-1
16. FB1
<PCSP24-ED package>
18 17 16 15 14 13
19 12
20 11
21 10
22 9
23 8
24 7
1 2 3 45
6
13 14 15 16 17 18
12
11
PAD (*1)
PAD (*1)
10
9
PAD (*1)
PAD (*1)
8
7
19
20
21
22
23
24
654 321
(Top View)
(Bottom View)
NJU7680SED (U.D.)
(*1) The PAD is not connected to an IC chip electrically.
PIN FUNCTION
1. N.C.
2. FB2
3. IN-2
4. N.C.
5. V+
6. N.C.
7. DTC2
8. N.C.
9. OUT2
10. N.C.
11. OUT1
12. N.C.
13. DTC1
14. GND
15. GND
16. RT
17. VREG
18. N.C.
19. IN-1
20. FB1
21. N.C.
22. SCP
23. CE1
24. CE2
-2-
Ver.2010-03-31









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NJU7680 Даташит, Описание, Даташиты
BLOCK DIAGRAM
SCP
FB1
IN-1
DTC1
FB2
IN-2
DTC2
NJU7680www.DataSheet4U.com
Vref
1V
1V
VREG
V+
V+
Regulator
UVLO
2V
2µA
RT_ON
2k
1V
SCP
ON/OFF
CE1
CE2
ERAMP1
SST1
DTC_COMP1
PWM1
Buffer1
CH1
OUT1
ERAMP2
GND
SST2
DTC_COMP2
0.8V
0.2V
PWM2
Buffer2
OSC
0.5V
RT
RT
CH2
RT_ON
V+
RP
SW
OUT2
On/Off Function
The On/Off switch for each channel is controlled by CE pin.
Setting the CE low will turn off all applicable channels’ circuit.
Turning off both channels will turn off all circuit.
Opening the RT pin will turn off all circuit regardless of input signals from CE pin.
Input Signal
RT CE1 CE2
HHH
HH L
HLH
HL L
L HH
LHL
L LH
LLL
Operating State
CH1 CH2
ON ON
ON OFF
OFF ON
OFF
Standby Mode
Ver.2010-03-31
-3-










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