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CM3132 Datasheet(PDF) 5 Page - California Micro Devices Corp

Part No. CM3132
Description  Triple Linear Voltage Regulator for DDR-I Memory and CPU
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Maker  CALMIRCO [California Micro Devices Corp]
Homepage  http://www.calmicro.com
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CM3132 Datasheet(HTML) 5 Page - California Micro Devices Corp

 
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© 2004 California Micro Devices Corp. All rights reserved.
10/13/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
Tel: 408.263.3214
Fax: 408.263.7846
www.calmicro.com
5
CM3132
PRELIMINARY
Note 1: All parameters specified at TA = 0°C to +85°C unless otherwise noted.
Note 2: Note that the IDDQ current specified is the load current output from the VDDQ pin. VDDQ also supplies current internally to the
VTT regulator when it is sourcing current. The maximum source current can be up to 0.5A.The maximum total current from
the VDDQ regulator is the external VDDQ current IDDQ added to the maximum VTT sourcing current ITT. All load currents are
specified as such, but the VDDQ current limit is specified at a current just above the total maximum current.
Note 3: VCORE regulator only. Refer to VDDQ regulator parameters for VDDQ regulator.
Note 4: VCORE = 1.15V X (1 +
)
Table 1: Truth Table for CM3132
VTT Regulator Parameters
VTT
Output Voltage Range
VDDQ = 2.5V, ITT = 0.01A,
IDDQ = 0A
1.20
1.25
1.30
V
VTT REF
Output Voltage Range
VCC = 0V, VDDQ = 2.500V,
ITT = 0.01A
1.225
1.250
1.275
V
VTT LD
Load Regulation
TA = 25°C, VDDQ = 2.5V,
0.01A
ITT ±0.5A
-1.0
-
1.0
%
eN TT
Output Noise Voltage
BW = 10Hz - 100kHz, CTT = 10µF51
µ
Vrms
ITT LIM
Current Limit
0.6
0.8
A
ITT SC
Short Circuit Current
VTT < 0.7V
0.3
A
VCORE Regulator Parameters
VCC MIN
Input Voltage
VCORE = 1.5V, ICORE = 1.5A,
SENSE_CORE = 0V, Note 3
2.2
V
VCORE DEF Default Output Voltage Range
VCC = 3.3V, ICORE = 0.01A,
SENSE_CORE = 0V
1.45
1.50
1.55
V
VCORE ADJ Adjustable Output Voltage
Range
VCC = 3.3V, SENSE_CORE from
resistors R3 & R4, Note 4
1.2
1.8
V
VCORE LD
Load Regulation
TA = 25°C, VCC = 3.3V,
0.01A
ICORE ±1.5
--
2.5
%
VCORE LINE Line Regulation
TA = 25°C, 2.8V
VCC 3.6V,
ICORE = 0.01A
-1.0
-
1.0
%
eN CORE
Output Noise Voltage
BW = 10Hz - 100kHz, CCORE = 47µF59
µ
Vrms
ICORE LIM
Current Limit
1.7
2.0
A
ICORE SC
Short Circuit Current
VCORE < 0.3V
0.5
A
VCC(1)
EN_DDR
VDDQ OUT
VTT OUT
2.8V to 3.6V
Low
VDDQ
VDDQ / 2
X
High
0V
0V
ELECTRICAL OPERATING CHARACTERISTICS (CONT’D) (SEE NOTE1)
R3
R4
--------


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