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LDO Regulator. CM3102 Datasheet

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LDO Regulator. CM3102 Datasheet
















CM3102 Regulator. Datasheet pdf. Equivalent













Part

CM3102

Description

Micropower 1.2V/150mA CMOS LDO Regulator



Feature


CM3102 Micropower 1.2V/150mA CMOS LDO Re gulator with Power Good Features • 1- 5ms Power Good (PG) control signal • Regulated 1.2V output • 150mA output current • Low quiescent operating cur rent (90µA typical) www.DataSheet4U.co m • "Zero" disable mode current • F oldback current limiting protection • Thermal shutdown protection • Stable with low-ESR capacitors • SOT23-5 .
Manufacture

California Micro Devices

Datasheet
Download CM3102 Datasheet


California Micro Devices CM3102

CM3102; package • "MIC5258" pinout • Lead-fr ee version available Product Descripti on The CM3102 is a low quiescent curren t (90uA) regulator that delivers up to 150mA of load current at a fixed 1.2V o utput. In addition, the CM3102 features a Power Good output signal (PG) that g oes open drain 1 to 5 ms after the outp ut voltage has exceeded typically 93% o f its nominal level. A.


California Micro Devices CM3102

dedicated control input (EN, Active Hig h) has been included for power-up seque ncing flexibility. When this input is t aken low, the regulator is disabled. In this state, the supply current will dr op to near zero. An internal discharge MOSFET resistance (500Ω) will force t he output to ground whenever the device has been shutdown. The CM3102 is fully protected, offering.


California Micro Devices CM3102

both overload current limiting and high temperature thermal shutdown. Availabl e in a tiny SOT23 package, the device i s ideal for space critical applications . The CM3102 is available with optional lead-free finishing. Applications • • • • • Pentium 4 Motherboa rds Processor Power-up Sequencing Deskt op, Notebook and Palmtop Computers PC C ards Peripheral Adapter Cards .





Part

CM3102

Description

Micropower 1.2V/150mA CMOS LDO Regulator



Feature


CM3102 Micropower 1.2V/150mA CMOS LDO Re gulator with Power Good Features • 1- 5ms Power Good (PG) control signal • Regulated 1.2V output • 150mA output current • Low quiescent operating cur rent (90µA typical) www.DataSheet4U.co m • "Zero" disable mode current • F oldback current limiting protection • Thermal shutdown protection • Stable with low-ESR capacitors • SOT23-5 .
Manufacture

California Micro Devices

Datasheet
Download CM3102 Datasheet




 CM3102
CM3102
Micropower 1.2V/150mA CMOS LDO Regulator
with Power Good
Features
• 1-5ms Power Good (PG) control signal
• Regulated 1.2V output
• 150mA output current
• Low quiescent operating current (90µA typical)
www.DataSheet4U.c"oZmero" disable mode current
• Foldback current limiting protection
• Thermal shutdown protection
• Stable with low-ESR capacitors
• SOT23-5 package
• "MIC5258" pinout
• Lead-free version available
Applications
• Pentium4 Motherboards
• Processor Power-up Sequencing
• Desktop, Notebook and Palmtop Computers
• PC Cards
• Peripheral Adapter Cards
Product Description
The CM3102 is a low quiescent current (90uA) regula-
tor that delivers up to 150mA of load current at a fixed
1.2V output. In addition, the CM3102 features a Power
Good output signal (PG) that goes open drain 1 to 5
ms after the output voltage has exceeded typically 93%
of its nominal level.
A dedicated control input (EN, Active High) has been
included for power-up sequencing flexibility. When this
input is taken low, the regulator is disabled. In this
state, the supply current will drop to near zero. An inter-
nal discharge MOSFET resistance (500) will force the
output to ground whenever the device has been shut-
down.
The CM3102 is fully protected, offering both overload
current limiting and high temperature thermal shut-
down.
Available in a tiny SOT23 package, the device is ideal
for space critical applications.
The CM3102 is available with optional lead-free finish-
ing.
Pentium4 Motherboard
Application Circuit
CM3102-12Sx
VCC3
10
IN OUT
EN PG
GND
.1µF*
1.2V VCCVID
PG
.1µF
* Input capacitor optional.
Typical Application Circuit
47k
CM3102-12Sx
VIN
IN OUT
VOUT
EN
EN PG
PG
GND
1µF*
1µF
Simplified Electrical Schematic
IN
EN
GND
VREF
1.2V
+
-
+
2.5ms
-
VREF X 0.93
1X
1.2V/150mA
OUT
PG
GND
* Input capacitor optional.
© 2004 California Micro Devices Corp. All rights reserved.
01/20/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
1




 CM3102
PACKAGE / PINOUT DIAGRAM
Top View
IN 1
5
OUT
GND
2
www.DataSheet4U.com
Note: This drawing is not to scale.
EN 3
4
5-pin SOT23
PG
CM3102
PIN DESCRIPTIONS
PIN NAME DESCRIPTION
1 IN Positive input voltage for the regulator. The internal loading on this input is typically 300µA when-
ever the regulator is enabled, and less than 1µA when the regulator is disabled. Although an input
filter capacitor is not required, it is recommended that a 1µF ceramic capacitor be used for addi-
tional filtering and stability if this pin is greater than 2 inches from the main input filter.
2 GND The negative reference for all voltages.
3 EN Enable/shutdown input. When EN is asserted high (VEN 1.6V), the regulator is enabled. When EN
is asserted low (VEN 0.4V), the regulator’s series pass transistor is forced into a high impedance
mode and an internal discharge resistance (500) is applied to the output to quickly reduce the out-
put voltage to 0 volts.
4 PG Power Good output. This is an open drain output and functions as a supply voltage supervisor for
the output voltage. It is asserted low when the output falls below 89% of its nominal value. This out-
put becomes inactive when VOUT remains above 97% of its nominal value for 1 to 5ms.
5 OUT The regulated voltage output. An output capacitor of 1µF is recommended to minimize any tran-
sient load disturbances under normal operating conditions. Additional output capacitance can be
used to further improve transient load response.
Ordering Information
PART NUMBERING INFORMATION
Standard Finish
Regulator
CM3102-12
Pins
5
Package
SOT23-5
Ordering Part
Number1
CM3102-12ST
Part Marking
BA12
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Lead-free Finish
Ordering Part
Number1
Part Marking
CM3102-12SO
BB12
© 2004 California Micro Devices Corp. All rights reserved.
2 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
01/20/04




 CM3102
CM3102
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
ESD Protection (HBM)
+2000
V
Pin Voltages
VIN
VOUT
www.DataSheet4U.com VEN
Storage Temperature Range
[GND - 0.6] to +6.0
[GND - 0.6] to [VIN+0.6]
[GND - 0.6] to [VIN+0.6]
-40 to +150
V
V
V
°C
Operating Temperature Range
Ambient
Junction
0 to +70
0 to +150
°C
°C
Power Dissipation (See note 1)
Internally Limited
W
Note 1: The power rating is based on a printed circuit board heat spreading capability equivalent to 2 square inches of copper con-
nected to the GND pins. Typical multi-layer boards using power plane construction will provide this heat spreading ability
without the need for additional dedicated copper area. Please consult with factory for thermal evaluation assistance.
STANDARD OPERATING CONDITIONS
PARAMETER
VIN
Ambient Operating Temperature Range
Load Current
COUT
VALUE
2.7 to 5.5
0 to +70
0 to 150
1 +20%
UNITS
V
°C
mA
µF
© 2004 California Micro Devices Corp. All rights reserved.
01/20/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846 L www.calmicro.com
3




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