For assistance or to order, call (800) 531-5782 PT6305 Series 3 AMP HIGH-PERFORMANCE ADJUSTABLE ISR The PT6305N is Power Trends’ new high performance +5V to +3.3V, 3 Amp, 12-Pin SIP (Single In-linePackage) Integrated Switching Regulator (ISR). This high-performance ISR allows easy integration of low-power 3.3V logic IC’s into existing 5V systems without redesigning the central power supply. Only one external capacitor is required for proper operation. The PT6306,7,8 can be used to power high-speed data buses (+2.1V), or the new GTL (+1.2V) logic buses. Pin-Out Information Ordering Information • Single-Device 5V to 3V Power • 85% Efficiency • Small SIP Footprint: 0.36" x 2.00” x 0.60"(H) • Wide Input Voltage Range: +4.5V to +9.0V • Internal Short Circuit Protection • Over-Temperature Protection Standard Application VO Adjust 12 2,3,4 VIN (+) 9,10,11 VOUT (+) PT6305,6,7,8 C1 C2 Pin No. Function 1 N/C 2 Vin 3 Vin 4 Vin 5 GND 6 GND Pin No. Function 7 GND 8 GND 9 Vout 10 Vout 11 Vout 12 Adjust (See page 40.) 5,6,7,8 COM COM C1 = Optional electrolytic (100µF) C2 = Required 100µF electrolytic (No tantalum) See capacitor application note on page 43. PT6305n PT6306n PT6307n PT6308n = +3.3 Volts = +1.8 Volts = +2.1 Volts = +1.2 Volts (For dimensions, see page 66.) PT Series Suffix (PT1234X) Case/Pin Configuration Vertical Through-Hole Heat Tab Configuration None Side N A C Horizontal Through-Hole Horizontal Surface Mount 1 12 R G B (See Thermal Application Notes on page 44 for heat tab application data.) Specifications PT6305 SERIES Characteristics (TA=25˚C unless noted) Output Current Symbols Io Conditions 4.5 ≤ Vin ≤ Vin MAX Min 0.3 Typ — Max 3.0** Current Limit Icl Vin = +5V — 3.6 5.0 ADC Short Circuit Current Isc Vin = +5V — 5.0 — Apk Input Voltage Range Vin 0.3A ≤ Io ≤ 3.0A PT6305N PT6306N PT6307N PT6308N 4.5 4.5 4.5 4.5 — — — — 9 9 9 6.0 VDC VDC VDC VDC Static Voltage Tolerance Vo Vin = +5V, Io = 3.0A 0°C ≤ Ta ≤ +70°C PT6305N PT6306N PT6307N PT6308N 3.2 1.7 2.0 1.1 3.3 1.8 2.1 1.2 3.4 1.9 2.2 1.3 VDC VDC VDC VDC Line Regulation Regline 4.5V ≤ Vin ≤ 5.5V, Io = 3.0A — ±25 ±50 mV Load Regulation Regload Vin = +5V, 0.3 ≤ Io ≤ 3.0A — ±25 ±50 mV Vo Ripple/Noise pk-pk Vn Vin = 5V, Io = 3.0A — 66 — mV Transient Response with C2 = 100µF ttr Vos Io step between 1.5A and 3.0A Vo over/undershoot — — 200 200 — — µSec mV Vin = +5V, Io = 1.5A PT6305N PT6306N PT6307N PT6308N — — — — 85 74 77 63 — — — — % % % % Vin = +5V, Io = 3.0A PT6305N PT6306N PT6307N PT6308N — — — — 80 68 72 57 — — — — % % % % Efficiency η Units ADC Switching Frequency ƒo 4.5 ≤ Vin ≤ Vin MAX 0.3A ≤ Io ≤ 3.0A 500 650 800 KHz Operating Temperature Ta 0 — +70* °C Thermal Resistance θja Free Air Convection (40-60 LFM) Over Vin and Io Ranges Free Air Convection (40-60 LFM) — 25 — °C/W Storage Temperature Ts — -40 — +125 °C Mechanical Shock Per Mil-STD-883D, Method 2002.3 Condition A, 1 msec, Half Sine, mounted to a fixture — — 500 G’s Mechanical Vibration Per Mil-STD-883D, Method 2007.2 Condition A, 20-2000 Hz — — 15 G’s Weight — — — 11.2 — grams Relative Humidity — Non-condensing 0 — 95 % *See Thermal Derating chart. **The PT6305 Series can be easily paralleled to provide output current in multiples of 3 amps. Please contact a Power Trends’ Application Engineer for the appropriate application note. Note: The PT6305 Series requires a 100µF electrolytic capacitor for proper operation in all applications. 24 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 For assistance or to order, call C H A R A C T E R I S T I C (800) 531-5782 D A T A PT6305, 3.3 VDC PT6307, 2.1 VDC PT6308, 1.2 VDC (See Note 1) (See Note 1) (See Note 1) Efficiency vs Output Current 100 90 90 90 5.0V 70 5.5V 8.0V 60 Efficiency - % 80 4.5V 5.0V 70 5.5V 60 8.0V 9.0V 9.0V 50 50 0 0.5 1 1.5 2 Iout-(Amps) 2.5 0 3 Ripple vs Output Current 0.5 1 1.5 2 Iout-(Amps) 2.5 5.5V 40 5.0V Vin 60 8.0V 2 2.5 40 5.0V 0 0.5 1 20 2 2.5 0 3 0.5 1 4.5 4.25 4.25 4 3.75 3.7 3.5 2 2.5 3 0.5 1 1.5 2 2.5 0 3 0.5 1 70°C 1.5 2 Thermal Derating (Ta) (See Note 3) 85°C 3 85°C 2.5 95°C 90°C 1.5 95°C 1 2 Iout-(Amps) Iout-(Amps) 1.5 1 0.5 0 0 6.5 8.5 10.5 6.5 8.5 10.5 4.5 2.5 Vin Power Dissipation vs Output Current 1.5 5.5V 1 5.0V 9.0V 2 Pd-(Watts) 8.0V 8.0V 1.5 5.5V 5.0V 1 4.5V 0.5 4.5V 0.5 0 Iout-(Amps) 2 2.5 3 2 6.0V 5.5V 1.5 5.0V 1 4.5V 0.5 0 0 1.5 2.5 Vin Vin 9.0V 2 6 3 3 2.5 5.5 Vin-(Volts) Power Dissipation vs Output Current 3 1 5 Vin-(Volts) Power Dissipation vs Output Current 0.5 1 0 4.5 Vin-(Volts) 0 1.5 0.5 Pd-(Watts) Iout-(Amps) 2 0.5 Pd-(Watts) 90°C 2.5 85°C 2 4.5 3 (See Note 3) 3 90°C 2.5 2.5 Iout-(Amps) Thermal Derating (Ta) (See Note 3) (See Note 2) 4 Iout-(Amps) 3 3 3.5 0 Iout-(Amps) Thermal Derating (Ta) 2.5 3.75 3.5 1.5 2 Minimum Input Voltage (See Note 2) Vin-(Volts) 3.9 1.5 Iout-(Amps) 4.5 Vin-(Volts) Vin-(Volts) 1.5 Minimum Input Voltage (See Note 2) 4.1 1 5.0V Iout-(Amps) 4.3 0.5 5.5V 40 0 3 4.5 0 6.0V 60 4.5V 4.5V Iout-(Amps) Minimum Input Voltage 3 Vin 0 1.5 2.5 80 5.5V 0 1 2 Ripple vs Output Current 20 0.5 1.5 100 4.5V 20 1 9.0V Ripple-(mV) Ripple-(mV) 8.0V 0.5 Iout-(Amps) 9.0V 60 6.0V 0 80 Vin 0 5.5V Ripple vs Output Current 80 5.0V 60 3 100 100 4.5V 70 40 40 40 Vin 80 50 Ripple (mv) Efficiency - % 4.5V Efficiency - % Vin Vin 80 0 0.5 1 1.5 Iout-(Amps) 2 2.5 3 0 0.5 1 1.5 2 2.5 3 Iout-(Amps) Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR. Note 2: Minimum Vin data is typical and is not guaranteed. The data corresponds to a 2% output voltage drop. Note 3: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM with no optional heat tab soldered in a printed circuit board. (See Thermal Application Notes). Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 25 DATA SHEETS Efficiency vs Output Current 100 100 High-Performance ISRs Efficiency vs Output Current For assistance or to order, call (800) 531-5782 Product families using this package style: PT6400 PT5060 Package Style 300 Suffix A, C, D, E, N, P PACKAGE INFORMATION AND DIMENSIONS Revised 2/11/2000 Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 (800) 531-5782 Fax: (630) 393-6902 http://www.ti.com/powertrends IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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