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PDF AT1368 Data sheet ( Hoja de datos )
| Número de pieza | AT1368 | |
| Descripción | 1-Channel Synchronous Buck PWM Controller | |
| Fabricantes | Aimtron Technology | |
| Logotipo |  |
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AT1368
1-Channel Synchronous Buck PWM Controller
with Power Good Reset
Features
• High efficiency (min. 90% On IO=300mA
~600mA)
• Using external P and N channel MOSFET
• Supports for down and up/down Zeta
conversion
• Maximum Duty 100%
• Oscillation frequency 300KHz or 600KHz
• Soft Start by an external capacity
• Output voltage accuracy ±2%
• Built-in ON/OFF Function
• Built-in Short-circuit Protection
• Stand-by current max. 10µA
• Quiescent Current 1mA
• Monitor the input voltage and 3V3 output
• Input voltage: 2.5V ~7.0V
Applications
• Slim-Type CD-ROM/DVD-ROM/CD-RW
• Power Supply for portable devices
• Main or Sub Power source foe notebook
computers and peripherals.
Block Diagram
General Description
The AT1368 provides complete control and
protection for a DC/DC converter optimized for
high-performance microprocessor applications. It
is designed to drive one P-Channel and one N-
Channel MOSFETs in a synchronous-rectified
buck topology. The AT1368 integrates all of the
control, output adjustment, monitoring and
protection functions into a single package. The
output voltage of the converter can be precisely
regulated with a maximum tolerance of ±2% over
temperature and line voltage variations. The
AT1368 is a family of low-noise synchronous step-
down DC/DC converters that is ideally suited for
systems powered from a 1-cell Li-ion battery or
from a 3-cell to 4-cell NiCd, NiMH, or alkaline
battery. It can also be used to USB-Based power
system.
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: [email protected]
1
1 page  
PDRV Output
Block
NDRV Output
Block
Control Block
RESET Monitor
Block
AT1368
1-Channel Synchronous Buck PWM Controller
with Power Good Reset
Output source current
Output sink current
Output ON resistor
Output source current
Output sink current
Output ON resistor
CTL input voltage
CTL input Current
VCC reset ON voltage
VCC reset hysteresis
3V3 reset ON voltage
3V3 reset hysteresis
Reset output voltage
Reset leakage current
Isource Duty≥95% PDRV=0V - -130 -80 mA
Isink Duty≤5% PDRV=5V 65 100
mA
ROH PDRV=-15mA
18 30 Ω
ROL PDRV=15mA
16 25 Ω
Isource Duty≥95% NDRV=0V - -130 -80 mA
Isink Duty≤5% NDRV=5V 65 100
mA
ROH NDRV=-15mA
18 30 Ω
ROL NDRV=15mA
16 25 Ω
VIH Active mode
1.5 VCC V
VIL Standby mode
0 0.8 V
ICTL CTL=5.0V
20 µA
VRSTON1 VCC rising
4.10 4.20 4.30 V
VRSTON1 hys VCC falling
100 mV
VRSTON2 3V3 rising
2.94 3.0 3.06 V
VRSTON2 hys 3V3 falling
100 mV
VOL IL =1mA
0.4 V
ILeak 2.0 µA
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: [email protected]
5
5 Page 
AT1368
1-Channel Synchronous Buck PWM Controller
with Power Good Reset
Package Outline 16-pin SSOP
SYMBOL
A
A1
A2
b
C
D
ZD
E
E1
L
e
y
θ
MILLIMETERS
MIN
TYP MAX
1.35 1.60 1.75
0.10 0.15 0.25
- - 1.50
0.20 - 0.30
0.18 - 0.25
4.80 4.85 5.00
- 0.20 -
5.79 5.99 6.20
3.81 3.91 3.99
0.41 0.71 1.27
- 0.64 -
- - 0.076
0° 8°
MIN
0.053
0.004
-
0.008
0.007
0.189
-
0.228
0.150
0.016
-
-
0°
INCHES
TYP
0.063
0.006
-
-
-
0.191
0.008
0.236
0.154
0.028
0.025
-
MAX
0.069
0.010
0.059
0.012
0.010
0.197
-
0.244
0.157
0.050
-
0.003
8°
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: [email protected]
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AT1368.PDF ] | |
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