AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Absolute Maximum Ratings
(Ta=+250C)
Parameter
Symbol
Condition
Rated Value
Unit
Min.
Max.
Power supply voltage
LX pin voltage
LX pin output current
Allowable dissipation
VCC
VLX
ILX
—
—
—
—
—
—
—
—
6.0
6.0
1.7
430
330
+85
+125
V
V
A
PD
TSSOP8
MSOP8
—
mW
mW
0C
Operating temperature
Storage temperature
TOP
Tstg
-30
-55
—
0C
WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in
excess of absolute maximum ratings. Do not exceed these ratings.
Electrical Characteristics
(Ta=+250C)
Values
Typ.
Parameter
Symbol
Condition
Unit
Min.
Max.
Power Supply
Voltage
VCC
VIN
2.5
-
5.5
V
V
Input Voltage
1.5
-
-
1.0
60
5.5
1.1
70
Start-Up Voltage
VStart IOUT=1mA VIN =0Æ2V
V
μA
μA
μA
V
I2
I2
I3
VIN = VOUT +0.5V(VOUT = 3.3V)
VIN = VOUT +0.5V(VOUT = 5.0V)
/SHDN=0V, VIN =5.5V
50
90
-
Switch off Current
100
1
110
5
Shutdown Current
Feedback Reference
VREF Close loop, VOUT =3.3V
FS VOUT =3.3V
1.200
-
1.220
380
90
1.244
-
Switching
Frequency
KHz
%
Maximum Duty
LX ON Resistance
Current Limit
Dmax VOUT =3.3V
VOUT =3.3V
85
0.2
1.0
0.4
0.98
50
-
95
0.23
1.4
0.8
1.0
70
0.26
1.7
1.2
1.02
90
Ω
ILimit VIN = 2.0V , VOUT =3.3V, Duty=55%
VOUT =3.3V
A
/SHDN Trip Level
LBI Trip Level
V
VCC Falling
V
Hysteresis Width
(LBI Trip Level)
LBO/LD Sink
current
VCC Rising
mV
mA
°C
ILBO LBO/LD=0.4V
7.5
170
-
Thermal shutdown
-
-
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
05/05/26
3
AIMTRON [ AIMTRON TECHNOLOGY ]
