CM3002
Micropower 1.0A Low Dropout CMOS Regulators
Features
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Regulated output options: 1.5, 1.8, 2.5 and
3.3 volts
1.0A output current
Operates from 3.3V supply (5.0V for CM3002-33)
Very low dropout voltage on CM3002-33
products (500mV@1A)
Enable Output Control for power-up sequencing
Low quiescent operating current (< 600
µ
A typical)
Current limit protection
Thermal overload protection
Reverse voltage protection
Available in thermally-enhanced SOIC-8 and
MSOP-8 (CM3002-33MA/MF) packages
Lead-free versions available
Product Description
The CM3002 family of regulators are very low dropout
regulators that deliver up to 1.0A of load current at a
fixed voltage output. Input and output voltage options
for the CM3002 family devices are presented in
Table 1.
Operating from a single input supply, these devices are
ideally suited for powering low voltage “core” proces-
sors, especially where a 3.3V source is already avail-
able.
These regulators feature a dedicated control input (EN,
Active High) for power-up sequencing flexibility. When
this input is taken low, the regulator output is disabled.
In this state, the supply current will drop to a low level
to ensure all the internal control circuitry still remains
active. This provides excellent start-up response when-
ever the device comes out of shutdown.
The CM3002 family of regulators is fully protected,
offering both overload current limiting and high temper-
ature thermal shutdown. Housed in space saving ther-
mally-enhanced SOIC-8 and MSOP-8 (CM3002-33MA/
MF) packages, these devices ensure maximum junc-
tion-to-ambient power dissipation.
The CM3002 is available with optional lead-free finish-
ing.
Applications
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Low Voltage "Core" Processors
Peripheral Adapter Cards
Portable/Battery-Powered Devices
Table 1: CM3002 Regulator Family
PRODUCT
CM3002-15SA/SF
CM3002-18SA/SF
CM3002-25SA/SF
CM3002-33SA/SF
CM3002-33MA/MF
INPUT
VOLTAGE
3.3V
3.3V
3.3V
5.0V or 3.3V
5.0V or 3.3V
OUTPUT VOLTAGE
1.5V
1.8V
2.5V
3.3V
3.3V
Typical Application Circuit
Simplified Electrical Schematic
V
CC
V
CC
Supply
Voltage +
-
V
OUT
EN
+
1
µ
F
100nF
GND
+
10
µ
F
V
OUT
EN
Thermal Sensor
&
Current Limit
Reference
Voltage
+
EN
-
V
OUT
GND
©
2004 California Micro Devices Corp. All rights reserved.
08/16/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
1
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
