AIMTRON AT1303P-GRE

AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Features
General Description
• Low Start-Up from below 1.0V
• Low Input Quiescent Current(Switching Off
Current for 3.3V output) : 60µA (typ.)
• High Output Voltage Accuracy ±2.0%
• Small Number of External Components needed
• Output Voltage from 1.2V to 5.5V
• Space Saving MSOP-8 or TSSOP8 package
The AT1303 is a high efficiency current mode
PWM step-up DC/DC converter with light load
control for applications using battery-powered
system. The device will automatically skip
switching cycles under light load condition to
maintain high efficiency at light load. The small
MSOP-8 or TSSOP-8 packages make the AT1303
an ideal choice of DC/DC Converter for space
conscious applications.
Applications
• Personal Digital Assistant (PDA)
• Digital Camera
• Portable Audio (MP3)
• Electronic Game
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
1
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Pin Configuration
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Symbol
LBO
LBI
VCC
LX
PGND
GND
FB
/SHDN
I/O
O
I
P
O
P
P
I
I
Description
Low Battery Detected output (active Hi-Z)
Low Battery Detected input
Power Supply
Switching Pin
Power Ground
Ground
Error Amplifier Input
Chip Enable Input
Ordering Information
Part number
AT1303P
AT1303P_PBF
AT1303P_GRE
AT1303M
AT1303M_PBF
AT1303M_GRE
Package
TSSOP8
TSSOP8, Pb-Free
TSSOP8, Green
MSOP8
MSOP8, Pb-Free
MSOP8, Green
Marking
AT1303P
AT1303P, Date Code with one bottom line
AT1303P, Date Code with two bottom line
AT1303
AT1303, Date Code with one bottom line
AT1303, Date Code with two bottom line
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
2
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Absolute Maximum Ratings
(Ta=+250C)
Parameter
Symbol
Condition
Power supply voltage
LX pin voltage
LX pin output current
Allowable dissipation
VCC
VLX
ILX
PD
Operating temperature
Storage temperature
TOP
Tstg
—
—
—
TSSOP8
MSOP8
—
—
Rated Value
Min.
Max.
—
6.0
—
6.0
—
1.7
—
430
—
330
-30
+85
-55
+125
Unit
V
V
A
mW
mW
0
C
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
(Ta=+250C)
Parameter
Symbol
Condition
Min.
Values
Typ.
Max.
Unit
Power Supply
Voltage
VCC
2.5
-
5.5
V
Input Voltage
VIN
1.5
-
5.5
V
Start-Up Voltage
VStart
-
1.0
1.1
V
IOUT=1mA VIN =0Æ2V
I2
VIN = VOUT +0.5V(VOUT = 3.3V)
50
60
70
μA
I2
VIN = VOUT +0.5V(VOUT = 5.0V)
90
100
110
μA
I3
/SHDN=0V, VIN =5.5V
-
1
5
μA
VREF
Close loop, VOUT =3.3V
1.200
1.220
1.244
V
Switch off Current
Shutdown Current
Feedback Reference
Switching
Frequency
FS
VOUT =3.3V
-
380
-
KHz
Dmax
VOUT =3.3V
85
90
95
%
VOUT =3.3V
0.2
0.23
0.26
Ω
VIN = 2.0V , VOUT =3.3V, Duty=55%
1.0
1.4
1.7
A
/SHDN Trip Level
VOUT =3.3V
0.4
0.8
1.2
V
LBI Trip Level
VCC Falling
0.98
1.0
1.02
V
VCC Rising
50
70
90
mV
-
7.5
-
mA
-
170
-
°C
Maximum Duty
LX ON Resistance
Current Limit
Hysteresis Width
(LBI Trip Level)
LBO/LD Sink
current
Thermal shutdown
ILimit
ILBO
LBO/LD=0.4V
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
3
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Thermal shutdown
Hysterises
-
20
-
°C
*Unless otherwise provided, VIN =1.5V (when VOUT =3.3V), and use External Circuit of Typical Application (Fig 1).
Typical Curve (as Fig.1, Fig. 2) L=10µH/LYS6S28(LEE YU)
Efficiency for 3.3V Output
90
Efficiency
85
80
75
70
65 1
10
Vin
Vin
Vin
Vin
Vin
Vin
= 1.0V
= 1.5V
= 1.8V
= 2.0V
= 2.5V
= 3.0V
2
3
10
ILoad(mA)
10
Efficiency for 5.0V Output
92
90
88
Efficiency
86
84
Vin
Vin
Vin
Vin
Vin
Vin
82
80
= 1.0V
= 1.5V
= 1.8V
= 2.0V
= 3.0V
= 4.0V
78
76 1
10
2
10
ILoad(mA)
3
10
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
4
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Efficiency for 3.3V Output (Vin=2.0V)
88
86
Efficiency
84
82
80
L = 3.3uH
L = 4.7uH
L = 10uH
L = 22uH
78
76 1
10
2
3
10
ILoad(mA)
10
Efficiency for 5.0V Output (Vin=2.0V)
90
88
86
Efficiency
84
82
80
L = 3.3uH
L = 4.7uH
L = 10uH
L = 22uH
78
76
74
72 1
10
2
10
ILoad(mA)
3
10
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
5
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
6
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
7
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Typical Application Circuit
Fig. 1
Fig. 2
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
8
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Small Outline
SYMBOL
A
B
C
D
E
F
H
K
M
α
8-pin TSSOP
INCHES
MIN
MAX
0.114
0.122
0.169
0.177
0.244
0.260
0.026
BSC
0.010
0.012
0.002
0.006
0.041
0.047
0.005
BSC
0.020
0.028
80
00
MILLIMETERS
MIN
MAX
2.90
3.10
4.30
4.50
6.20
6.60
0.65 BSC
0.25
0.30
0.05
0.15
1.05
1.20
0.127 BSC
0.50
0.70
00
80
NOTES
-
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
9
05/05/26
AT1303
Preliminary Product Information
MicroPower Step-Up DC/DC Converter
Small Outline
SYMBOL
A
A1
B
C
D
e
E
H
L
α
S
8-pin Plastic MSOP
INCHES
MIN
MAX
0.037
0.043
0.002
0.006
0.010
0.014
0.005
0.007
0.116
0.120
0.0256 BSC
0.116
0.120
0.188
0.198
0.016
0.026
0°
6°
0.207 BSC
MILLIMETERS
MIN
MAX
0.94
1.10
0.05
0.15
0.25
0.36
0.13
0.18
2.95
3.05
0.65 BSC
2.95
3.05
4.78
5.03
0.41
0.66
0°
6°
0.525 BSC
NOTES
-
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
10
05/05/26