AT1301-50C [GMT]
Switching Regulator/Controller,;
| 型号： | AT1301-50C |
| 厂家： | 
GLOBAL MIXED-MODE TECHNOLOGY INC |
| 描述： | Switching Regulator/Controller, |
| 文件： | 总8页 (文件大小：264K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AT1301
Preliminary Product Information
VFM Step-Up DC/DC Converter
Features
General Description
• Guaranteed Start-Up from below 0.9V
• Low Input Current
The AT1301 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 cells battery.
Only three external components are required to
deliver a fixed output voltage of 3.3V, 5V. This
device employ VFM for minimum supply current
at low loads.
• High Output Voltage Accuracy ±2.5%
• Small Number of External Components needed
• Fixed Output Voltage: 3.3V, 5V
• Space Saving SOT-89 package
The VFM control circuit operating in 100kHz
(typ.) switching rate results in smaller passive
components. The small SOT-89 packages make the
AT1301 an ideal choice of DC/DC Converter for
space conscious applications.
Applications
• Power source for battery-powered equipment
• Power source for cameras, camcorders, VCRs,
PDAs, electronic data banks, and hand-held
Communication equipment
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
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
1
AT1301
Preliminary Product Information
VFM Step-Up DC/DC Converter
Pin Configuration
AT1301 (SOT-89 )
Pin Description
Pin No. Symbol
I/O
Description
1
2
3
VSS
OUT
LX
P
Ground Pin
P/O Step-Up Output and Power Supply Pin
O
Switching Pin
Ordering Information
Part number.
AT1301-33C
Output voltage
3.3V
Marking
□□□A
AT1301-33C-Green
AT1301-50C
AT1301-50C-Green
3.3V
□□□A,date code with one bottom line
□□□B
□□□B,date code with one bottom line
5.0V
3.3V
□□□: Date code
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
2
AT1301
Preliminary Product Information
VFM 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
Operating temperature
Storage temperature
VOUT
VLX
ILX
—
—
—
—
—
—
—
—
—
—
0
10
V
V
10
250
500
+70
+125
mA
mW
0C
PD
TOP
Tstg
-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.
Part
Parameter
Symbol
Condition
Unit
number
Min.
Max.
AT1301-33
AT1301-50
VOUT
VOUT
VIN
3.218 3.300 3.382
V
V
V
V
V
Output Voltage
4.875 5.000 5.125
Input Voltage
Start-Up Voltage
Hold-On Voltage
No-Load Input
Current
-
-
0.6
-
0.7
-
8
0.9
-
VStart IOUT=1mA VIN =0Æ2V
VHold IOUT=1mA VIN =2Æ0V
AT1301-33
AT1301-50
AT1301-33
μA
IIN1
IOUT=0mA
-
30
-
VIN = VOUT +0.5V
μA
Supply Current
IIN2
Measurement of the IC
input current in switch off
-
0.6
-
AT1301-50
AT1301-33
AT1301-50
LX Switching
Current
LX Leakage
Current
ILX
VLX =0.4V
60
-
-
-
mA
mA
VLX =8V
+0.5V
VIN = VOUT
ILXleak
0.6
0.8
Maximum
Oscillator
Frequency
Oscillator Duty
Cycle
fOSC
75
100
130
KHz
DUTY VLX ” L” side
60
70
70
80
80
-
%
%
V
AT1301-33
AT1301-50
Efficiency
IOUT=50mA
η
VLX Voltage
Limit
VLXlimit LX Switch On
0.6
0.8
1.0
Unless otherwise provided, VIN =2.0V (when VOUT =3.3V); VIN =3.0V (when VOUT =5.0V) , VSS =0V,
OUT=10mA, and use External Circuit of Typical Application (Fig 1).
I
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
3
AT1301
Preliminary Product Information
VFM Step-Up DC/DC Converter
Typical Application Schematic
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
4
AT1301
Preliminary Product Information
VFM Step-Up DC/DC Converter
Operating Characteristics
Condition : L = 100μH, C = 22μF.
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
5
AT1301
Preliminary Product Information
VFM 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
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
6
AT1301
Preliminary Product Information
VFM 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
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
7
AT1301
Preliminary Product Information
VFM Step-Up DC/DC Converter
Package Information
Dimension in millimeters
Dimensions in inches
Symbol
Min
1.397
0.356
2.388
0.406
--
Max
1.600
0.483
2.591
0.533
4.242
1.194
4.597
1.753
1.549
0.432
Min
0.055
0.014
0.094
0.016
--
Max
0.063
0.019
0.102
0.021
0.167
0.047
0.181
0.069
0.061
0.017
A
b
B
b1
C
C1
D
0.787
4.394
1.397
1.448
0.381
0.031
0.173
0.055
0.057
0.015
D1
e
H
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
8
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