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S39421S Dataheets PDF



Part Number S39421S
Manufacturers ETC
Logo ETC
Description Hot Swap Voltage Controller
Datasheet S39421S DatasheetS39421S Datasheet (PDF)

SUMMIT MICROELECTRONICS, Inc. S39421 Hot Swap Voltage Controller FEATURES • Full Voltage Control for Hot Swap Applications – Card Insertion Detection – Platform Voltage Detection – Card Voltage Sequencing – 5 Volt, 12 Volt and 3.3 Volt • 12 Volt FET Enable Outputs – Allows use of Low On-resistance N-Channel FETS • Card Reset Generation Based on Out of Spec Voltages – Host Reset • Programmable Slew Rate Control [250V/Sec Default Rate] • Supports 5 Volt, 3.3 Volt and Mixed Voltage Cards • Integ.

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SUMMIT MICROELECTRONICS, Inc. S39421 Hot Swap Voltage Controller FEATURES • Full Voltage Control for Hot Swap Applications – Card Insertion Detection – Platform Voltage Detection – Card Voltage Sequencing – 5 Volt, 12 Volt and 3.3 Volt • 12 Volt FET Enable Outputs – Allows use of Low On-resistance N-Channel FETS • Card Reset Generation Based on Out of Spec Voltages – Host Reset • Programmable Slew Rate Control [250V/Sec Default Rate] • Supports 5 Volt, 3.3 Volt and Mixed Voltage Cards • Integrated 1K Bit E2PROM Memory • Data Download™ Mode [Simplifies Downloading of Configuration Memory into Interface ASIC or MCU] DESCRIPTION The S39421 is a fully integrated hot swap controller intended for use on add-in cards that may be inserted into or removed from powered-on host platforms. The S39421 performs a variety of tasks starting with the validation of proper card insertion and the presence of “in-spec” voltages at the host platform interface. Once power is switched on, the S39421 continues to monitor the back-end power to the add-in card and the host power supply. If either the 5V or 3.3V supplies drop below Vtrip the S39421 will immediately assert the RESET outputs and power-down the add-in card. In addition to the power control for the add-in card, the S39421 provides status signals that can be employed by the host and for the control of bus interface components. The on board E2PROM can be used as configuration memory for the individual card or as general purpose memory. The proprietary DataDownload mode provides a more direct interface to the E2PROM for simplified access by the add-in card’s controller or ASIC. FUNCTIONAL BLOCK DIAGRAM W R _P EL ST VS H ST H _R ST VCC5 EEPROM Memory Array + VCC3 + CARD_5V + CARD_3V + Filter PND1 DD DO CS SK DI DRVREN SGNL_VLD CARD_V_VLD ASSOCIATE MEMBER Sequencing Logic RESET Timer RESET RESET PND2 ISLEW Slew Rate Control VGATE3 VGATE5 12 SUMMIT MICROELECTRONICS, Inc. • 300 Orchard City Drive, Suite 131 • Campbell, CA 95008 VC C 2024 ILL2.1 • Telephone 408-378-6461 • Fax 408-378-6586 • www.summitmicro.com © SUMMIT MICROELECTRONICS, Inc. 1999 2024 9.0 8/8/00 1 Characteristics subject to change without notice S39421 PIN CONFIGURATION Symbol VCC12 DRVREN ISLEW VSEL DD CS SK DI DO PND2 PND1 GND Pin 1 2 3 4 5 6 7 8 9 10 11 12 Description 12 Volt Input High Side Driver Enable (L) Slew Rate Control Voltage Select Data Download Enable Microwire Chip Select Microwire Serial Clock Microwire Data In SK 7 8 9 10 11 12 18 17 16 15 14 13 RESET RESET HST_RST HST_PWR SGNL_VLD CARD_V_VLD 2024 ILL1.1 VCC12 DRVREN ISLEW VSEL DD CS 1 2 3 4 5 6 24 23 22 21 20 19 VCC5 VGATE5 CARD_5V VCC3 VGATE3 CARD_3V Microwire Data Out DI Pin Detect 2 (Active Low) DO Pin Detect 1 (Active Low) PND2 Ground PND1 CARD_V_VLD 13 SGNL_VLD HST_PWR HST_RST RESET RESET CARD_3V VGATE3 VCC3 CARD_5V VGATE5 VCC5 14 15 16 17 18 19 20 21 22 23 24 Card Voltage Valid GND Signals Valid (Active Low) Host Power Up Enable Host Reset (Active Low) RESET(Active Low) RESET Card’s 3 Volt Monitor Input 3 Volt Gate Output 3 Volt Input Card’s 5 Volt Monitor Input 5 Volt Gate Output 5 Volt Input RECOMMENDED OPERATING CONDITIONS Condition Temperature VCC Min -40°C 2.7V Max +85°C 5.5V 2024 PGM T1.1 2024 9.0 8/8/00 2 S39421 ABSOLUTE MAXIMUM RATINGS* Temperature Under Bias Storage Temperature Voltage on : DRVREN -55°C to +125°C -65°C to +150°C 15V 7V 7V 7V 12V VCC +.7V VCC +.7V 100mA 300°C COMMENT Stresses listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. VCC12 VCC3 CARD_5V CARD_3V SGNL_VLD, CARD_V_VLD & RESET RESET All Others Output Short Circuit Current Lead Solder Temperature (10 secs) DC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions) Symbol ICC1 ICC2 ICC3 VTRIP Parameter Power Supply Current Power Supply Current Power Supply Current VTRIP Sense Levels Low to High Conditions Resets Active, VGATES Ramping Quiesent - Resets released, VGATES On Min Typ .6 250 .8 Max 1 500 1.5 4.75 3.0 4.70 2.95 Units mA µA mA V V V V mV Quiesent - EEPROM Access VCC5 and CARD_5V VCC3 and CARD_3V VCC5 and CARD_5V VCC3 and CARD_3V 4.5 2.8 4.5 2.8 4.6 2.9 High to Low VTRHST ILI ILO VIL VIH VOL VOH VOLRS VOHRS Trip Point Hysteresis Input Leakage Current Output Leakage Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage RESET Output Low Voltage RESET Output High Voltage 7 1 2 -0.1 2 VCC = 5.0V, IOL = 2.1mA VCC = 5.0V, IOH = -400µA IOL = 3.2mA IOH = -800 µA VCC-.75V 2.4 0.4 2 10 0.8 VCC+1 0.4 µA µA V V V V V V 2024 PGM T2.3 2024 9.0 8/8/00 3 S39421 MEMORY AC OPERATING CHARACTERISTICS (Over Recommended Operating Conditions) Symbol tCSS t.


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