AT1305 Datasheet, PDF (3/13 Pages) Aimtron Technology – PFM Step-Up DC/DC Converter with LDO

AT1305
Preliminary Product Information
PFM Step-Up DC/DC Converter with LDO
Absolute Maximum Ratings*1
Parameter
Symbol
Power supply voltage
LX pin voltage
OUT output voltage
Other I/O pin voltage
V_DD
V_LX
V_OUT
Condition
—
—
—
—
Rated Value
Min.
Max.
—
6.0
—
6.0
—
6.0
—
6.0
(T_a=+25⁰C)
Unit
V
V
V
V
LX pin output current
I_LX
LDO output Peak Current
I_LDO
Allowable dissipation
P_D
Operating temperature
T_OP
Storage temperature
T_stg
—
—
TSSOP8
—
—
—
2
A
—
400
mA
—
500
mW
-30
+85
0_C
-55
+165
0_C
1. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other
conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
Parameter
Symbol
Condition
(VIN=1.0V, VOUT =2.8V, IOUT=0mA ,Ta=+25⁰C)
Values
Min. Typ.
Unit
Max.
Start-Up Voltage
Power On Reset
Threshold
Operating V _DD
Range
No-Load Input
Current
Switch- Off Input
Current
Shutdown Current
Feedback Reference
FB Input Current
LX Switch On-time
V_ST
I_OUT=1mA
V_DD
AT1305,AT1305A
V_DD
AT1305B
I_IN1
I_OUT=0mA
I_IN2 ^VIN=5V
I_IN3 EN=0V, /ENPB=High
V_FB Close Loop V_DD =2.85V
I_FB
V_FB =1.2V
F_S
V_OUT =2.85V
0.7
-
2.0
1.65
-
-
-
1.176
-
-
0.8
-
V
2
-
V
-
5.5 V
5.5 V
87
-
μA
32
50 μA
1
10 μA
1.2 1.224 V
-
50 nA
1.75
-
μS
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
WWW: http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email: [e-mail]
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