Features ■ ■ ■ ■ ■ ■ Low cost 10 amp output current 92 % efficiency Low 0.55 ˝ profile Remote sense Adjustable Vout ■ ■ ■ ■ ■ Short-circuit protection with auto-restart Fast transient response High temperature operation Remote enable Output precharge capability ST10A-12SA Series Power Module Electrical Specifications General Information This non-isolated SIP uses a 12 V input to provide 10 Amps of output current at voltages ranging from 0.8 V to 3.5 V. The ST10A output is adjustable by the user to provide any voltage within its range. Its extra low 0.8 V output will power even the latest in ASICs, microprocessors, and DSPs. The ST10A has an industry standard pinout, is 2 inches long, and only 0.55 inches high. Its total footprint is a space saving 0.75 in2. Features include Enable/Disable, output voltage trim, remote sense, short circuit protection with auto-restart, fast transient response, and high temperature operation. The ST10A is one of the most cost-effective DC-DC converters available. Output Voltage (V) Output Current (A) Ripple Max. (mV pp) Efficiency Typ. (%) 12 10 to 14 0.8 to 3.5 10 20 90 ST10A-12SA Product Dimensions 50.8 (2.0) 7.6 (0.3) E T E L O S B O Voltage ......................................10 VDC Min. 12 VDC Nom. 14 VDC Max. Current .........................................4 A Nom. Remote Enable Low = Enable .....................0.4 VDC Max. High = Disable.....................2.4 VDC Min. (Open = Enable) E/D Current ............................250 µA Nom. Output Specifications Input Voltage (V) Current ............................................0 to 10 A Current Limit .................................11 to 18 A Voltage Setpoint Accuracy ................................................±1 %Vnom ±2 %Vnom Max. Optional ...............................±0.5 %Vnom ±1 %Vnom Max. Line Regulation .....................±0.1 %Vnom. Load Regulation ....................±0.5 %Vnom. Ripple............20 mV pp Nom. (Vout = 1.5 V) Dynamic Response 50 to 100 % Load.................60 mV Nom. 50 µs Nom. 100 to 50 % Load.................60 mV Nom. 50 µs Nom. Temperature Regulation ...............................±0.02 %Vout/°C Max. General Specifications MBTF ...2,000 kHrs Nom. (25 °C, 80 % Load) Operating Temperature........-40 to +100 °C Storage Temperature...........-55 to +125 °C Switching Frequency............300 kHz Nom. 1 2 3 4 5 1.8 (0.07) 6 7 8 14.0 (0.55) 9 10 2.54 (0.100) 1.27 (0.050) 35.6 (1.400) PIN DESCRIPTIONS: 1 – Vout 5 – Gnd 2 – Vout 6 – Gnd 3 – Sense 7 – Vin 4 – Vout 8 – Vin 9 – Trim 10 – Enable 3.43 ± 0.38 (0.135 ± .015) 5.08 (0.2) 0.5 TYP. PIN WIDTH (0.020) DIMENSIONS = MILLIMETERS (INCHES) TOLERANCES = (.xx) = ± .25 (.01) (.xxx) = ± .13 (.005) Product Schematic Vin (12 V) + 7 - Vin 1 - Vout 8 - Vin 2 - Vout + Vout 4 - Vout 3 - REMOTE SENSE 33 µF 10 µF 9 - TRIM 10 - ENABLE NOTES: 1. Use low ESR capacitors for VIN. 2. Part is enabled when ENABLE (10) is left floating or pulled low. 3. Part is disabled when ENABLE (10) is pulled high. 4. Use the table above to determine an RTRIM resistor for the desired voltage. 5. To get an intermediate voltage between 0.800 V and 3.500 V, use the equation at right. VOUT 3.3 RTRIM (kΩ) .0768 2.5 .523 1.9 1.3 1.8 1.5 1.5 2.55 1.2 5.11 0.8 open Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 5 - GND 6 - GND Input Specifications Nominal Input (V) Rtrim SEE TABLE Rtrim = 2.408 – 0.887 (K) (Vout – 0.8) ST10A-12SA Series Power Module How to Order S T 10A - 12 S A Configuration • S = SIP Internal Identifier Current/Power (Amps) Input Voltage (V) Outputs • S = Single Output Voltage (V) • A = Adjustable E T E L O S B O Reliable Electronic Solutions Asia-Pacific: TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116 Europe: TEL +41-41 768 5555 • FAX +41-41 768 5510 The Americas: TEL +1-951 781-5500 • FAX +1-951 781-5700 www.bourns.com COPYRIGHT© 2005, BOURNS, INC. LITHO IN U.S.A., REV. 1/05