3.0A Low Dropout Voltage Regulator
Adjustable
CORPORATION
CLM2830
FEATURES
PRODUCT DESCRIPTION
The Calogic CLM2830 is a low power 3A adjustable voltage
regulator that is very easy to use. It requires only 2 external
resistors to set the output voltage. This device is an excellent
choice for use in powering Intel microprocessors to convert
from +5V to 3.3V supplies and as a post regulator for
switching supplies applications.
TM
•
Adjustable Output Down to 1.2V
•
Output Current of 3A
•
Low Dropout Voltage Regulation 0.01%(typ.)
•
Extremely Tight Load
•
Extremely Tight Line Regulation 0.015%(typ.)
Limiting
•
Current and ThermalLow Cost TO-220
•
Standard 3-Terminal
•
Similar to Industry Standard LT1085
•
Powering Intel Pentium
µP
from +5V Supplies
•
Power PC Supplies
•
SMPS Post-Regulator
Efficiency "Green" Computer Systems
•
High Efficiency Linear Power Supplies
High
•
•
Portable Instrumentation
•
Constant Current Regulators
•
Adjustable Power Supplies
•
Battery Chargers
TM
TM
APPLICATIONS
The CLM2830 offers full protection against over-current faults,
reversed input polarity, reversed load insertion, and positive
and negative transient voltage. On-Chip trimming adjusts the
reference voltage to 1%. The I
Q
of this device flows into the
load which increases the efficiency.
The CLM2830 is offered in a 3-pin TO-220 package
compatible with older 3 terminal regulators. For a 5A low
dropout regulator refer to the CLM2850 data sheet.
ORDERING INFORMATION
PART
CLM2830AU
CLM2830AT
PACKAGE
TO-220 (3-Pin)
TO-263 Plastic (3-Pin)
TEMPERATURE
IND.
IND.
For fixed output voltage contact factory.
PIN CONNECTIONS
PLASTIC TO-263 PACKAGE
CLM2830
PLASTIC PACKAGE TO-220
CLM2830
3
2
1
V
IN
V
OUT
V
ADJ
V
IN
V
OUT
V
ADJ
FRONT VIEW
1E-41
FRONT VIEW
1E-40
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CLM2830
CORPORATION
ABSOLUTE MAXIMUM RATINGS
Lead Temp. (Soldering, 10 Seconds) . . . . . . . . . . . . . . 300
o
C
Storage Temperature Range . . . . . . . . . . . . . . . -65 to +150
o
C
Operating Junction Temperature Range
CLM2830 Control Section . . . . . . . . . . . . . . 0
o
C to +125
o
C
CLM2830 Power Transistor . . . . . . . . . . . . . 0
o
C to +150
o
C
Input Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . +30V
Input to Output Voltage Differential . . . . . . . . . . . . . . . . . +30V
ELECTRICAL CHARACTERISTICS:
(Note 1) I
OUT
= 10mA, T
A
= 25
o
C, unless otherwise specified.
PARAMETER
MIN
Reference Voltage
Min. Load Current
1.238
1.225
CLM2830
TYP
1.250
1.250
40
5
0.015
0.035
0.05
0.1
0.2
1.1
3.2
0.2
4.0
0.5
0.3
55
0.2
0.004
0.5
60
75
0.003
0.7/3.0
1
120
5
0.02
MAX
1.262
1.270
50
10
0.2
0.2
0.5
0.3
0.4
1.5
V
V
mA
mA
%
%
%
%
%
V
A
A
%
µA
µA
%/W
%
dB
%V
O
o
UNITS
CONDITIONS
10mA
≤
I
OUT
≤
I
FULLLOAD
1.5V
≤
(V
IN
- V
OUT
≤
25V (Over Temperature)
(V
IN
- V
OUT
) = +25V, CLM2830A
CLM2830
1.5V
≤
V
IN
- V
OUT
≤
15V
I
LOAD
= 10mA
15V
≤
V
IN
- V
OUT
≤
30V
10mA
≤
I
OUT
≤
I
FULLLOAD
(V
IN
- V
OUT
) =
3V
I
OUT
= I
FULLLOAD
,
∆V
REF
= 1%
V
IN
- V
OUT
= 5V
V
IN
- V
OUT
= 25V
T
A
= 125
o
C, 1000 Hrs.
Line Regulation
Load Regulation
Dropout Voltage
Current Limit
Long Term Stability
Adjust Pin Current
Adjust Pin Current Change
Thermal Regulation
Temperature Stability
Ripple Rejection Ratio
Output Noise, RMS
Thermal Resistance
Junction-to-Case
30ms pulse
V
IN
- V
OUT
= 3V
I
OUT
= 3A, C
OUT
= 25µF, C
ADJ
= 25µF, f = 120Hz
10Hz to 10kHz
CLM2830 - TO-220 and TO-263
C/W
The Bold specifications apply to the over full operating temperature range.
Note 1:
Changes in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 2:
A 10µF output capacitor is required on CLM2830.
Note 3:
Value shown for control circuitry (power transistor).
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CLM2830
CORPORATION
TYPICAL PERFORMANCE CHARACTERISTICS
0.10
OUTPUT VOLTAGE DEVIATION (%)
0.05
0
–0.05
–0.10
–0.15
LOAD REGULATION
∆
I = 3A
SHORT CIRCUIT CURRENT (A)
6
5
SHORT CIRCUIT CURRENT
25˚C
4
150˚C
3
–55˚C
2
1
0
I
FULL LOAD
–0.20
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (˚C)
1E-42
0
5
10 15 20 25 30 35
INPUT/OUTPUT DIFFERENTIAL (V)
1E-43
100
ADJUSTMENT PIN CURRENT (µA)
90
80
70
60
50
40
30
20
10
ADJUSTMENT PIN CURRENT
MINIMUM INPUT/OUTPUT DIFFERENTIAL (V)
2
DROPOUT VOLTAGE
INDICATES GUARANTEED TEST POINT
–55˚C
≤
T
J
≤
150˚C
0˚C
≤
T
J
≤
125˚C
1
T
J
= –55˚C
T
J
= 25˚C
T
J
= 150˚C
0
–50 –25
0
0
1
2
3
OUTPUT CURRENT (A)
4
1E-45
0 25 50 75 100 125 150
TEMPERATURE (˚C)
1E-44
MINIMUM OPERATING CURRENT (mA)
1.270
REFERENCE VOLTAGE (V)
TEMPERATURE STABILITY
10
9
8
7
6
5
4
3
2
1
0
0
MINIMUM
OPERATING CURRENT
1.260
T
J
= 150˚C
T
J
= 25˚C
1.250
1.240
T
J
= –55˚C
5
10 15 20 25 30 35
INPUT/OUTPUT DIFFERENTIAL (V)
1E-47
1.230
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (˚C)
1E-46
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
CLM2830
CORPORATION
TYPICAL APPLICATIONS
V
IN
C
1
IN
CLM2830
OUT
R
1
V
IN
C
1
IN
CLM2830
OUT
R
1
C
2
V
OUT
ADJ
ADJ
LOAD
V
OUT
= V
REF
(1 + R
1
/R
2
) + I
ADJ
R
2
R
2
3A CURRENT OUTPUT REGULATOR
1E-48
TYPICAL ADJUSTABLE REGULATOR
1E-49
INTEL486
TM
V
IN
+5V
C
1
IN
CLM2830
3.45V
OUT
R
1
C
2
V
CC
ADJ
R
2
INTEL468 AND PENTIUM IS A
TRADE MARK OF INTEL CORP.
POWERING INTEL PENTIUM WITH CLM2830
1E-50
CALOGIC CORPORATION,
237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025
京公网安备 11010802033920号
EEWORLD
