NJU3555NJU3555NJU8753
-5-
Ver.2003-09-26
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER SYMBOL RATING UNIT
Supply Voltage
VDD
VREG
VDDO
-0.3 ~ +4.0
-0.3 ~ +4.0
-0.3 ~ +15.0
V
V
V
LX Input Voltage VLX -0.3 ~ +15.0 V
FB Input Voltage VFB -0.3 ~ +4.0 V
Input Voltage Vin -0.3 ~ VDD+0.3 V
Operating Temperature Topr -40 ~ +85 °C
Storage Temperature Tstg -40 ~ +125 °C
Power Dissipation PD 640* mW
* : Mounted on a glass epoxy PCB(50mm x 50mm x 1.6mm).
Note 1) All voltage are relative to “VSS= 0V” reference.
Note 2) The LSI must be used inside of the “Absolute maximum ratings”. Otherwise, a stress may cause
permanent damage to the LSI.
Note 3) De-coupling capacitors for VDD(Pin 28)-VSS(Pin 27), VREG(Pin 3)-VSS(Pin 5) and LX(Pin 8,9)-VSS(Pin
17,18,19) should be connected for stable operation.
ELECT RICAL CHARACTER ISTI C
(Ta=25°C, VDD=VREG=2.85V, VBAT=3.7V, VDDO=10V, VSS=0V, VSS1=0V,
TEST1=TEST2=TEST3=0V, EN1=EN2=2.85V,
Input Signal=1kHz, Input Signal Level=150mVrms, Frequency Band=20Hz~20kHz,
Load Impedance=2.0µF 2nd-order 11.5kHz LC Filter(Q=0.72))
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Note
VDD Supply Voltage VDD 2.6 2.85 3.6 V
VREG Supply Voltage VREG 2.6 2.85 3.6 V
VBAT Input Voltage VBAT 2.6 3.7 4.2 V
VDDO Supply Voltage VDDO 8.0 10.0 12.0 V
Input Impedance ZIN IN pin - 20 - KΩ
Voltage Gain AV - 31 - dB
Output THD THD Input Signal Level
=200mVrms - 0.05 0.08 % 4
Maximum Output Vo Output THD=10% - 8.0 - Vrms
S/N SN A weight - 80 - dB 4
Operating Current(Standby) IST EN1=EN2=0V - - 1 µA
Operating Current
(No signal input) ISS No-load operating
No Signal Input - 10 15 mA
VIH EN1, EN2 pins 0.7VDD - VDD V
Input Voltage VIL EN1, EN2 pins 0 - 0.3VDD V
Input Leakage Current ILK EN1, EN2 pins - - ±1.0 µA
Switching regulator
Oscillating Frequency fOSC 220 300 380 kHz
Switching regulator
Maximum Load Current IOUT Step-up Voltage =10.0V
VOUT= 10.0V X 95% 50 - - mA
Switching regulator
Load Stability ∆VOUT Step-up Voltage =10.0V
IOUT =10mA~50mA - 100 - mV