OM7621NM OM7622NM OM7623NM OM7624NM SURFACE MOUNT LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS Three Terminal Adjustable Low Dropout 7.5A, 5A, 3A, 1.5A Positive Voltage Regulators FEATURES • • • • • • • Surface Mount Hermetic Package Operates Down to 1V Dropout, 1.5V @ Max. Current .015% Typical Line Regulation .01% Typical Load Regulation 1% Reference Voltage Electrically Equivalent to LT1083, 84, 85 and 86 Available Hi-Rel Screened DESCRIPTION These three terminal positive adjustable voltage regulators in surface mount package are designed to provide 7.5A, 5A, 3A, and 1.5A with higher efficiency than conventional voltage regulators. The devices are designed to operate to 1 Volt input to output differential and the dropout voltage is specified as a function of load current. These devices are ideally suited for Military applications where surface mount, small size, hermeticity and high reliability are required. ABSOLUTE MAXIMUM RATINGS Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V Operating Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to + 150°C Output Current - OM7621NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0 A OM7622NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 A OM7623NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 A OM7624NM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 A a PIN CONNECTION MECHANICAL OUTLINE .140 .140 .015 .500 1 2 .075 .157 .030 MIN. Pin 1: VIN Pin 2: Adjust .625 .415 3 Pin 3: VOUT .062 TOP VIEW 4 11 R1 Supersedes 1 05 R0 3.5 - 109 SIDE VIEW 3.5 .140 .075 .375 BOTTOM VIEW OM7621NM - OM7624NM ELECTRICAL CHARACTERISTICS TJ = -55°C to + 125°C Parameter Conditions Reference Voltage IOUT = 10 mA, Tj = 25°C Min. (VIN - VOUT) = 3 V Typ. Max. Units 1.238 1.262 V 1.220 1.270 V 0.25 % 10mA ≤ IOUT ≤ IFULL LOAD 1.5 V ≤ (VIN - VOUT) ≤ 25 V (Note 3) Line Regulation • ILOAD = 10 mA, 1.5 V ≤ (VIN - VOUT) ≤ 15 V, Tj = 25°C % 15 V ≤ (VIN - VOUT ) ≤ 35 V (Notes 1 & 2) Load Regulation • 0.55 0.9 % • • 1.1 % 1.5 V % (VIN - VOUT) = 3 V 10 mA ≤ IOUT ≤ IFULL LOAD Tj = 25°C (Notes 1, 2, & 3) Dropout Voltage ∆VREF = 1%, IOUT = IFULL LOAD Current Limit OM7621NM • • • • • • • • • (VIN - VOUT) = 5 V (VIN - VOUT) = 25 V OM7622NM (VIN - VOUT) = 5 V (VIN - VOUT) = 25 V OM7623NM (VIN - VOUT) = 5 V (VIN - VOUT) = 25 V OM7624NM (VIN - VOUT) = 5 V (VIN - VOUT ) = 25 V Minimum Load Current (VIN - VOUT) = 25 V Thermal Regulation TA = 25°C, 30 ms pulse 8.0 A 0.4 A 5.5 A 0.3 A 3.2 A 0.2 A 1.5 A 0.08 A 20 mA OM7621NM 0.01 %/W OM7622NM .015 %/W OM7623NM 0.02 %/W OM7624NM 0.05 %/W Ripple Rejection f = 120 Hz CADJ = 25 µF Tantalum IOUT - IFULL LOAD (VIN - VOUT) = 3 V Adjust Pin Current TJ = 25°C Adjust Pin Current Change 10mA ≤ IOUT ≤ IFULL LOAD Temperature Stability -55°C ≤ TJ ≤ +150°C Long Term Stability TA = 125°C, 1000 Hrs. Thermal Resistance Junction-to-Case 1.5 V ≤ (VIN - VOUT) ≤ 25 V 3.5 Lead Temperature 5 Seconds at Case 60 dB • 80 µA 5 µA 1.5 % 1 % OM7621NM 2.1 °C/W OM7622NM 3.1 °C/W OM7623NM 4.1 °C/W OM7624NM 5.3 °C/W 225 Note 1: Load and line regulation are measured at a constant junction temperature by low duty cycle pulse testing. Note 2: Line and load regulation are guaranteed up to the maximum power dissipation (OM7621/60W, OM7622/45W, OM7623/30W, OM7624/15W). Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output voltage range. Note 3: IFULL LOAD curve is defined as the minimum value of current limit as a function of input to output voltage. Note that power dissipation is only achievable over a limited range of input to output voltage. Note 4: Dropout voltage is specified over the full output current range of the device. The • denotes the specifications which apply over the full operating temperature range. °C