SMH4042A
SMH4042A is Distributed Power Hot-Swap Controller manufactured by Summit Microelectronics.
ATURES l Full Voltage Control for Hot Swap Applications w 15V High Side Driver Generation Allows use of Low On Resistance N-Channel FETs w Under-Voltage Lockout w Electronic Circuit Breakers w Card Insertion Detection w Host VCC Detection w Card Voltage Sequencing l Flexible Reset Control w Low Voltage Resets w Host Reset Filtering w Soft Reset l Adjustable Power On Slew Rate l Suppoprts Mixed Voltage Cards l Two Wire I2C Serial Data Interface w 4k-Bit E2PROM Memory
FUNCTIONAL BLOCK DIAGRAM
28 VCC BD_SEL1# BD_SEL2# 3 8 10 11 19 18 24 ISLEW A0 A1 A2 SCL SDA CBI_3
- +
13 12
1VREF VGATE3 EEPROM Memory Array VGATE5
5 22 27
LOCAL_PCI_RST LOCAL_PCI_RST#
20 9
CBI_5
- +
SGNL_VLD# CONTROL
+
- ASSOCIATE MEMBER
HEALTHY#
HST_3V_MON
+
- DRVREN#
CARD_3V_MON
+
- FAULT#
CARD_5V_MON
+
- 1.25V
7 17 6
PWR_EN PCI_RST# VSEL GND 14
©SUMMIT MICROELECTRONICS, Inc., 2003
- 1717 Fox Drive, San Jose, CA 95131
- Phone 408-436-9890
- FAX...
