NJU7606, NJU7608
Step-Up / Flyback Switching Regulator IC with Load Switch Function
■GENERAL
DESCRIPTION
NJU7606/08
is a high speed low voltage operation switching
regulator control IC with load switch function.
It features a which disconnects load from input during standby and
also provides latch mode.
■PACKAGE
OUTLINE
NJU7606RB2
■FEATURES
●
PWM switching control
●
Load Switch Function
●
Operating Voltage
●
Wide Oscillator Range
●
Maximum Duty Cycle
●
Quiescent Current
NJU7608PB1
■PRODUCT
VARIATION
●
Soft-Start Function
●
Dead Time Control
●
Timer Latch for Short Circuit Protection
●
C-MOS Technology
●
Package Outline
NJU7606RB2 : TVSP10
NJU7608PB1 : FFP12 -B1
2.2V to 8V
300kHz to 1MHz
90% typ.
Operating: 800µA typ.
Standby: 1µA max.
Internal : 16ms typ. or adjustable
NJU7608
NJU7606 small PKG
NJU7606
Load SW,
Standby Function
NJU7602
Standby Function
■PIN
CONFIGURATION
9
10
11
12
1
2
3
8
7
6
5
4
6
5
4
3
2
1
7
8
9
10
11
12
1
2
3
4
5
10
9
8
7
6
NJU7606RB2
PIN FUNCTION
1. V
+
2. LSW
3. FB
4. IN-
5. SCP
6. ON/OFF
7. DTC
8. RT
9. GND
10. OUT
TOP
UNDER
NJU7608PB1
PIN FUNCTION
1. GND
2. RT
3. DTC
4. ON/OFF
5. SCP
6. IN-
7. FB
8. LSW
9. V
+
10. N.C.
11. OUT
12. N.C.
Ver.2006-02-13
-1-
NJU7606, NJU7608
■ABSOLUTE
MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
Supply Voltage
V
+
LSW Output Voltage
V
LSW
Output Pin Current
I
O
LSW Output Current
I
LSW
ON/OFF Pin Voltage
V
ON/OFF
Power Dissipation
Operating Temperature Range
Storage Temperature Range
P
D
T
OPR
T
STG
MAXIMUM RATINGS
+9
+9
±50
-10
+9 (*1)
TVSP10 :320
FFP12-B1 :300 (*2)
-40 ~ +85
-40 ~ +125
UNIT
V
V
mA
mA
V
mW
°C
°C
*1: When input voltage is less than 9V, the absolute maximum control voltage is equal to the input voltage.
*2: On board. 25mm×25mm×0.2mm
■RECOMMENDED
OPERATING CONDITIONS (Ta=25°C)
PARAMETER
SYMBOL
MIN.
Operating Voltage
V
+
2.2
Oscillator Timing Resistor
R
T
30
Oscillation Frequency
f
OSC
300
TYP.
–
47
700
MAX.
8
120
1,000
UNIT
V
kΩ
kHz
■ELECTRICAL
CHARACTERISTICS (V
+
=V
ON/OFF
=3.3V, R
T
=47kΩ, Ta=25°C)
PARAMETER
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
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
V
T_ON
V
T_OFF
V
HYS
V
+
= L
→
H
V
+
= H
→
L
1.9
1.8
60
2.0
1.9
100
2.1
2.0
–
V
V
mV
T
SS
V
T_ON
→
Duty=80%
8
16
24
ms
V
T_PC
I
CHG
V
T_LA
V
T_LAOFF
FB Pin
V
SCP
=0V
SCP Pin
SCP Pin
0.95
1.5
0.95
0.2
1.00
2
1.00
0.45
1.05
2.5
1.05
0.7
V
µA
V
V
V
RT
f
OSC
f
DV
f
DT
V
+
=2.2V ~ 8V
Ta=-40°C ~ +85°C
-5%
630
–
–
0.5
700
1
3
+5%
770
–
–
V
kHz
%
%
Ver.2006-02-13
-3-