AT1303 Datasheet, PDF (3/10 Pages) Aimtron Technology – MICROPOWER STEP UP DC/DC CONVERTER

AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Absolute Maximum Ratings
Parameter
Symbol
Condition
(T_a=+25⁰C)
Rated Value Unit
Min. Max.
Power supply voltage
V_CC
—
— 6.0
V
LX pin voltage
V_LX
—
— 6.0
V
LX pin output current
I_LX
—
— 1.7
A
Allowable dissipation
P_D
TSSOP8
— 430
mW
MSOP8
— 330
mW
Operating temperature
T_OP
Storage temperature
T_stg
—
-30 +85
0_C
—
-55 +125
0_C
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
Parameter
Power Supply
Voltage
Input Voltage
Start-Up Voltage
Symbol
Condition
V_CC
V_IN
V_Start I_OUT=1mA V_IN =0Æ2V
Min.
Values
Typ.
(Ta=+25⁰C)
Unit
Max.
2.5
-
5.5 V
1.5
-
5.5 V
-
1.0 1.1 V
Switch off Current
Shutdown Current
I₂ V_IN = V_OUT +0.5V(V_OUT = 3.3V)
I₂ V_IN = V_OUT +0.5V(V_OUT = 5.0V)
I₃ /SHDN=0V, V_IN =5.5V
50
60
70 DŽA
90
100 110 DŽA
-
1
5 DŽA
Feedback Reference
Switching
Frequency
Maximum Duty
V_REF Close loop, V_OUT =3.3V
F_S V_OUT =3.3V
D_max V_OUT =3.3V
1.200 1.220 1.244 V
-
380
- KHz
85
90
95 %
LX ON Resistance
V_OUT =3.3V
0.2 0.23 0.26 Ω
Current Limit
I_Limit V_IN = 2.0V , V_OUT =3.3V, Duty=55% 1.0
1.4
1.7
A
/SHDN Trip Level
V_OUT =3.3V
0.4 0.8 1.2 V
LBI Trip Level
Hysteresis Width
(LBI Trip Level)
LBO/LD Sink
current
Thermal shutdown
VCC Falling
VCC Rising
I_LBO LBO/LD=0.4V
0.98 1.0 1.02 V
50
70
90 mV
-
7.5
- mA
-
170
-
°C
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone]
WWW: http://www.aimtron.com.tw
Fax: [phone]
Email: [e-mail]
3
05/05/26