NJU7600RB1-TE1

NJU7600
-
1
-
Ver.2012-08-03
PWM control Step-Up / Flyback switching regulator IC
GENERAL DESCRIPTION PACKAGE OUTLINE
FEATURES PRODUCT VARIATION
PWM switching control
Operating Voltage 2.2V to 8V
Wide Oscillator Range 300kHz to 1MHz
Maximum Duty Cycle 90% typ.
Quiescent Current 800µA typ.
Soft-Start Function Internal : 16ms typ. or adjustable
Dead Time Control
Timer Latch for Short Circuit Protection
C-MOS Technology
Package Outline NJU7600M : DMP8
NJU7600RB1 : MSOP8 (TVSP8)*
NJU7600RB2 : MSOP10 (TVSP10)*
*MEET JEDEC MO-187-DA / THIN TYPE
PIN CONFIGURATION
The NJU7600 is a low voltage operation high-speed switching
regulator control IC for PWM control step-up and fly-back converter.
It incorporates a totem pole driver output, which can directly driv
e
an external MOS-FET easily. The NJU7600 also has a soft-star
t
function, dead time control and timer latch for short circuit protection
and their times are all adjustable with external parts. It is available in
8-lead DMP, MSOP (TVSP) packages and 10-lead MSOP (TVSP
)
package. It is suitable for battery powered applications.
Over Current Protection
NJU7600
Standby Function
NJU7602 NJU7601
NJU7610
PWM Control
PWM/PFM
Light Load to
Efficiency
Constant Current Control
NJU7620
PIN FUNCTION
1. V
+
2. N.C.
3. FB
4. IN-
5. SCP
6. DTC
7. RT
8. GND
9. GND
10. OUT
NJU7600RB2
1 10
2 9
3 8
4 7
5 6
PIN FUNCTION
1. V
+
2. FB
3. IN-
4. SCP
5. DTC
6. RT
7. GND
8. OUT
NJU7600M
NJU7600RB1
1 8
2 7
3 6
4 5
NJU7600RB2
(MSOP10(TVSP10))
NJU7600M
(DMP8)
NJU7600RB1
(MSOP8 (TVSP8))
NJU7600
-
2
-
Ver.2012-08-03
BLOCK DIAGRAM
Buffer
0.74V
0.5V
OSC
1V
0.5
R
T
A
2k
2
µ
A
UVLO
Soft Start
Vref
1V
1V
0.8V
0.2V
OUT
GNDRT DTC
R
T
SCP
IN-
FB
V
+
PWM
SCP
ERAMP
Latch
Buffer
0.74V
0.5V
OSC
1V
0.5
R
T
A
2k
2uA
UVLO
Soft Start
Vref
1V
1V
0.8V
0.2V
OUT
GND
RT DTC
R
T
SCP
IN-
FB
V
+
PWM
SCP
ERAMP
Latch
GND
N.C.
NJU7600M
NJU7600RB1
NJU7600RB2
NJU7600
-
3
-
Ver.2012-08-03
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL MAXIMUM RATINGS UNIT
Supply Voltage V
+
+9 V
Output Pin Current
I
O
±50
mA
Power Dissipation
P
D
DMP8 : 300
MSOP8 (TVSP8) : 320
MSOP10 (TVSP10) : 320
mW
Operating Temperature Range
T
OPR
-40 to +85
°C
Storage Temperature Range
T
STG
-40 to +125
°C
RECOMMENDED OPERATING CONDITIONS (Ta=25°C)
PARAMETER SYMBOL MIN. TYP. MAX. UNIT
Operating Voltage V
+
2.2 8 V
Oscillator Timing Resistor R
T
30 47 120 k
Oscillation Frequency f
OSC
300 700 1,000 kHz
ELECTRICAL CHARACTERISTICS (V
+
=3.3V, R
T
=47k, Ta=25°C)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Under Voltage Lockout Block
ON Threshold Voltage
V
T_ON
V
+
= L H 1.9 2.0 2.1 V
OFF Threshold Voltage
V
T_OFF
V
+
= H L 1.8 1.9 2.0 V
Hysteresis Voltage
V
HYS
60 100 mV
Soft Start Block
Soft Start Time
T
SS
V
T_ON
Duty=80% 8 16 24 ms
Short Circuit Protection Block
Input Threshold Voltage
V
T_PC
FB Pin 0.95 1.00 1.05 V
Charge Current
I
CHG
V
SCP
=0V 1.5 2 2.5
µA
Latch Mode
ON Threshold Voltage
V
T_LA
SCP Pin 0.95 1.00 1.05 V
Latch Mode
OFF Threshold Voltage
V
T_LAOFF
SCP Pin 0.2 0.45 0.7 V
Oscillator Block
RT Pin Voltage
V
RT
-5% 0.5 +5% V
Oscillation Frequency
f
OSC
630 700 770 kHz
Oscillate Supply Voltage
Fluctuations
f
DV
V
+
=2.2V to 8V 1 %
Oscillate Temperature
Fluctuations
f
DT
Ta=- 40°C to +85°C
– 3 – %

NJU7600RB1-TE1

Mfr. #:
Manufacturer:
Description:
IC REG BST FLYBCK ADJ 8TVSP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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