3.0A Low Dropout Voltage Regulator Adjustable CORPORATION CLM2830 FEATURES • Adjustable Output Down to 1.2V • Output Current of 3A Dropout Voltage • Low • Extremely Tight Load Regulation 0.01%(typ.) • Extremely Tight Line Regulation 0.015%(typ.) and Thermal Limiting • Current • Standard 3-Terminal Low Cost TO-220 • Similar to Industry Standard LT1085 APPLICATIONS Intel Pentium µP from +5V Supplies • Powering • Power PC Supplies • SMPS Post-Regulator Efficiency "Green" Computer Systems • High • High Efficiency Linear Power Supplies • Portable Instrumentation Current Regulators • Constant • Adjustable Power Supplies • Battery Chargers TM 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 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 IQ of this device flows into the load which increases the efficiency. TM 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 PACKAGE CLM2830AU CLM2830AT TO-220 (3-Pin) TO-263 Plastic (3-Pin) TEMPERATURE IND. IND. For fixed output voltage contact factory. PIN CONNECTIONS 3 V IN 2 V OUT 1 VADJ PLASTIC PACKAGE TO-220 VIN CLM2830 CLM2830 PLASTIC TO-263 PACKAGE VOUT VADJ FRONT VIEW FRONT VIEW 1E-41 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) . . . . . . . . . . . . . . 300oC Storage Temperature Range . . . . . . . . . . . . . . . -65 to +150oC Operating Junction Temperature Range CLM2830 Control Section . . . . . . . . . . . . . . 0oC to +125oC CLM2830 Power Transistor . . . . . . . . . . . . . 0oC to +150oC Input Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . +30V Input to Output Voltage Differential . . . . . . . . . . . . . . . . . +30V ELECTRICAL CHARACTERISTICS: (Note 1) IOUT = 10mA, TA = 25oC, unless otherwise specified. CLM2830 PARAMETER UNITS CONDITIONS MIN TYP MAX 1.238 1.225 1.250 1.250 1.262 1.270 V V 40 5 50 10 mA mA Line Regulation 0.015 0.035 0.05 0.2 0.2 0.5 % % % 1.5V ≤ VIN - VOUT ≤ 15V ILOAD = 10mA 15V ≤ VIN - VOUT ≤ 30V Load Regulation 0.1 0.2 0.3 0.4 % % 10mA ≤ IOUT ≤ IFULLLOAD (VIN - VOUT) = 3V 1.1 1.5 Reference Voltage Min. Load Current Dropout Voltage Current Limit 3.2 0.2 4.0 0.5 V IOUT = IFULLLOAD, ∆VREF = 1% VIN - VOUT = 5V VIN - VOUT = 25V TA = 125oC, 1000 Hrs. 0.3 1 % Adjust Pin Current 55 120 µA Adjust Pin Current Change 0.2 5 µA 0.004 0.02 %/W Temperature Stability Ripple Rejection Ratio Output Noise, RMS Thermal Resistance Junction-to-Case 60 0.5 % 75 dB 0.003 0.7/3.0 (VIN - VOUT) = +25V, CLM2830A CLM2830 A A Long Term Stability Thermal Regulation 10mA ≤ IOUT ≤ IFULLLOAD 1.5V ≤ (VIN - VOUT ≤ 25V (Over Temperature) 30ms pulse VIN - VOUT = 3V IOUT = 3A, COUT = 25µF, CADJ = 25µF, f = 120Hz %VO 10Hz to 10kHz o 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 LOAD REGULATION SHORT CIRCUIT CURRENT (A) 0.05 0 –0.05 –0.10 –0.15 ADJUSTMENT PIN CURRENT (µA) 100 90 80 70 60 50 40 30 20 10 REFERENCE VOLTAGE (V) 1.270 4 150˚C 3 –55˚C 2 IFULL LOAD 1 0 25 50 75 100 125 150 TEMPERATURE (˚C) 1E-44 0 TEMPERATURE STABILITY 1.260 1.250 1.240 1.230 –50 –25 25˚C 0 ADJUSTMENT PIN CURRENT 0 –50 –25 5 0 25 50 75 100 125 150 TEMPERATURE (˚C) 1E-42 MINIMUM INPUT/OUTPUT DIFFERENTIAL (V) –0.20 –50 –25 SHORT CIRCUIT CURRENT 6 ∆I = 3A MINIMUM OPERATING CURRENT (mA) OUTPUT VOLTAGE DEVIATION (%) 0.10 0 25 50 75 100 125 150 TEMPERATURE (˚C) 1E-46 5 10 15 20 25 30 35 INPUT/OUTPUT DIFFERENTIAL (V) 1E-43 DROPOUT VOLTAGE 2 INDICATES GUARANTEED TEST POINT –55˚C ≤ TJ ≤ 150˚C 0˚C ≤ TJ ≤ 125˚C 1 TJ = –55˚C TJ = 25˚C TJ = 150˚C 0 0 1 2 3 OUTPUT CURRENT (A) 4 1E-45 MINIMUM OPERATING CURRENT 10 9 8 7 6 TJ = 150˚C 5 4 TJ = 25˚C 3 2 TJ = –55˚C 1 0 0 5 10 15 20 25 30 35 INPUT/OUTPUT DIFFERENTIAL (V) 1E-47 CALOGIC CORPORATION, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-3025 CLM2830 CORPORATION TYPICAL APPLICATIONS VIN IN CLM2830 C1 VIN OUT R1 ADJ 3A CURRENT OUTPUT REGULATOR IN CLM2830 C1 R1 ADJ VOUT = VREF (1 + R1 /R 2 ) + IADJ R 2 ADJ 3.45V VCC OUT R1 C2 R2 TYPICAL ADJUSTABLE REGULATOR 1E-48 VOUT OUT 1E-49 INTEL486TM +5V CLM2830 C1 LOAD VIN IN C2 R2 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