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PDF CM3004 Data sheet ( Hoja de datos )
| Número de pieza | CM3004 | |
| Descripción | 1.0 Amp Dual Mode Low-Dropout CMOS Regulator | |
| Fabricantes | California Micro Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CM3004 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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PRELIMINARY
CM3004www.DataSheet4U.com
1.0 Amp Dual Mode Low-Dropout CMOS Regulator
Features
• Internally fixed or adjustable output modes
• 250mV dropout at 1.0A load current
• Operates from 1.7V to 5.5V input supply
• Low Ground current (330µA at 1.0A Load)
• Minimal output capacitance required
• Stable with low ESR ceramic output capacitors
• Current limit protection
• Thermal overload protection
• Reverse current protection in shutdown
• Thermally enhanced 8-lead SOIC package
• Lead-free version available
Applications
• Low-voltage "Core" processors
• Set top boxes
• DVD players
• Personal video recorders
• Graphics Cards
• Gigabit NIC Cards
• PC Motherboards
• Notebooks
Product Description
The CM3004 is a very-low-dropout regulator that offers
both fixed output and fixed/adjustable operating
modes. When the Adjust control pin (ADJ) is grounded,
this device automatically enters a fixed voltage mode
delivering 2.5V out at 1.0A. When the Adjust pin is con-
nected to an external resistor network the device auto-
matically operates as an adjustable regulator. The
Adjust pin can also be tied directly to the OUT pin
which configures the CM3004 as a 1.2V regulator.
An Enable control pin (EN) allows the device to be
placed in a low-current mode.
The CM3004 is fully protected, offering both overload
current limiting, short-circuit protection and high-tem-
perature thermal shutdown. The CM3004 also includes
protection against output to input current flow while in
shutdown.
The CM3004 is supplied in a space-saving, 8-lead
power SOIC package which has been thermally
enhanced via an integral leadframe to ensure maxi-
mum junction-to-ambient power dissipation. The
CM3004 is also available with optional lead-free finish-
ing.
Typical Application Circuits
3.3V
VIN
10µF
CM3004
IN OUT
EN ADJ
GND
2.5V/1.0A
VOUT
100nF 10µF
GND
1.8V
VIN
10µF
CM3004
IN OUT
EN ADJ
GND
1.2V/1.0A
VOUT
100nF 10µF
Simplified Electrical Schematic
IN 1.7V-5.5V
Controller
Over Current
EN
Short Circuit
Over Temp
1.2V Reference
Voltage
+ EN
-
2.5V Output when ADJ = GND
Automatically selects Adjustable Output
(when external resistors are present)
Fixed
Adj
GND
1.0 AMP
OUT
ADJ
GND
© 2004 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com
1
1 page  
PRELIMINARY
CM3004www.DataSheet4U.com
Performance Information
Typical DC Characteristics nominal conditions unless specified otherwise)
Nominal Conditions: CIN = 10µF, COUT = 10µF
1.25 2.6
2.55
1.20 2.5
1.15
1.7 1.8 2.0 2.5 3.0 3.3 3.5
Input Voltage (V)
Figure 1. Line Regulation, (ILOAD=5mA)
1.2
2.45
2.4
3.0 4.0 5.0
Input Voltage (V)
Figure 4. Line Regulation, (ILOAD=5mA)
2.6
2.55
1.25 2.5
2.45
1.15
0.0 0.5 1.0
Load Current (A)
Figure 2. Load Regulation (VIN = 1.8V)
2.4
0
0.5
Load Current (A)
1.0
Figure 5. Load Regulation (VIN = 3.3V)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Figure 3. Operating Voltage Range (VOUT = 1.2V)
3
2.5
2
1.5
1
0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Input Voltage (V)
Figure 6. Operating Voltage Range (VOUT = 2.5V)
© 2005 California Micro Devices Corp. All rights reserved.
01/10/05 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 ● Tel: 408.263.3214 ● Fax: 408.263.7846 ● www.calmicro.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet CM3004.PDF ] | |
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