CM3002
PACKAGE / PINOUT DIAGRAMS
Top View
EN
V
CC
V
OUT
N.C.
1
2
3
4
8
7
6
5
Top View
GND
GND
GND
GND
EN
V
CC
V
OUT
N.C.
1
2
3
4
8
7
6
5
GND
GND
GND
GND
8-pin SOIC
(CM3002-xxSA/SF)
Note: These drawings are not to scale.
8-pin MSOP
(CM3002-33MA/MF only)
PIN DESCRIPTIONS
PIN(S)
1
NAME
EN
DESCRIPTION
A logic input control to enable the regulator output. When EN is asserted (logic high), it allows out-
put regulation to commence. When EN is deasserted (logic low), the regulator pass transistor (N-
channel MOSFET) is forced into a high impedance mode.
All other internal circuitry is unaffected by the state of the EN input and will always remain powered
whenever V
CC
is present.
An internal pull-up current (2µA) from V
CC
must be overdriven in order to apply a Logic Low to the
EN control input.
The EN control input is intended to be used for power-up sequencing.
The input power supply for the regulator. If this input is within a few inches of the main supply filter,
a capacitor may not be necessary. Otherwise an input filter capacitor of approximately 1uF to 10uF
will ensure adequate filtering.
The regulator voltage output used to power the load. A nominal output capacitor of 10uF is suffi-
cient to minimize any transient disturbances under normal operating conditions. Additional output
capacitance can be used to further improve transient load response.
These pins have no connection to the internal device. To provide additional thermal performance,
these pins can be connected directly to the PC board GND plane.
The negative reference for all voltages.
2
V
CC
3
V
OUT
4
5,6,7,8
N.C.
GND
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Regulator
CM3002-15
CM3002-18
CM3002-25
CM3002-33
CM3002-33
Pins
8
8
8
8
8
Package
Power SOIC
Power SOIC
Power SOIC
Power SOIC
Power MSOP
Ordering Part
Number
1
CM3002-15SA
CM3002-18SA
CM3002-25SA
CM3002-33SA
CM3002-33MA
Part Marking
CM3002-15SA
CM3002-18SA
CM3002-25SA
CM3002-33SA
233
Lead-free Finish
Ordering Part
Number
1
CM3002-15SF
CM3002-18SF
CM3002-25SF
CM3002-33SF
CM3002-33MF
Part Marking
CM3002-15SF
CM3002-18SF
CM3002-25SF
CM3002-33SF
233R
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
©
2004 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
▲
Tel: 408.263.3214
▲
Fax: 408.263.7846
▲
www.calmicro.com
08/16/04
CALMIRCO [ CALIFORNIA MICRO DEVICES CORP ]
