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PDF EML3170 Data sheet ( Hoja de datos )
| Número de pieza | EML3170 | |
| Descripción | Synchronous Step-Down Regulator | |
| Fabricantes | Elite Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EML3170 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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ESMT/EMP
Preliminary
EML3170
1.5MHz 3A, Synchronous Step-Down Regulator
General Description
EML3170 is a high efficiency current mode
synchronous buck PWM DC-DC regulator. The
internal generated 0.8V precision feedback
reference voltage is designed for low output voltage.
Low RDS (ON) synchronous switch dramatically reduces
conduction loss. To extend battery life for portable
application, 100% duty cycle is supported for
low-dropout operation. Shutdown mode also helps
saving the current consumption.
Features
Input Voltage Range: 2.5 to 5.5V
Adjustable Output Voltage From 0.8V to VIN
Precision Feedback Reference Voltage: 0.8V
(±2%)
Output Current: 3A (Max.)
Duty Cycle: 0~100%
Internal Fixed PWM Frequency: 1.5MHz
Low Quiescent Current: 100µA
No Schottky Diode Required
Built-in Soft Start
Current Mode Operation
Over Temperature Protection
Applications
Cellular Telephone
Wireless and DSL Modems
Digital Still Cameras
Portable Products
MP3 Players
Typical Application
R
V = V × (1 + 1 )
OUT
FB
R
2
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Feb. 2012
Revision: 0.1
1/14
1 page  
ESMT/EMP
Preliminary
EML3170
Typical Performance Characteristics
VIN=3.3V, TA=25℃, unless otherwise specified
Shutdown Current vs. Input Voltage
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
2.5
1.8
1.79
1.78
1.77
1.76
1.75
1.74
1.73
1.72
1.71
1.7
0.5
Shutdown Current VS. Input Voltage
VEN=0
V
3 3.5 4 4.5
Input Voltage (V)
Load Regulation
Load Regulation
5 5.5
VIN=3.3V
Vout=1.8V
1 1.5 2 2.5
Output Current (A)
3
Frequency vs. Temperature
Frequency VS. Temperature
1.65
1.63 VIN=3.3V
Vout=1.8V
1.61
1.59
1.57
1.55
1.53
1.51
1.49
1.47
1.45
-40
-20
0 20 40 60
Temperature (℃)
80 100
Line regulation
Line Regulation
0.61
0.608
VIN=3.3V
Vout=1.8V
0.606
0.604
0.602
0.6
0.598
0.596
0.594
0.592
0.59
2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Frequency vs. Input Voltage
1.65
1.63
1.61
1.59
1.57
1.55
1.53
1.51
1.49
1.47
1.45
2.5
Frequency VS. Input Voltage
3 3.5 4 4.5
Input Voltage (V)
VIN=3.3V
Vout=1.8V
5 5.5
Short Circuit
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Feb. 2012
Revision: 0.1
5/14
5 Page 
ESMT/EMP
Preliminary
Typical Schematic for PCB layout (cont.)
EML3170
Top Layer
Bottom Layer
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Feb. 2012
Revision: 0.1
11/14
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet EML3170.PDF ] | |
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