The ADM1186-1 and ADM1186-2 are integrated, four-channel, voltage monitoring and sequencing devices. A 2.7 V to 5.5 V power supply is required on the VCC pin for power. Four precision comparators monitor four voltage rails, with all comparators sharing a 0.6 V reference and a worst-case accuracy of 0.8%. Resistor networks that are external to the VIN1, VIN2, VIN3, and VIN4 pins set the Under Voltage (UV) trip points for the monitored supply rails. The ADM1186-1 and ADM1186-2 have four open drain enable outputs, OUTx, that are used to enable power supplies. An open drain power good output, PWRGD, is provided that indicates the four VINx inputs are above their UV thresholds. A state machine monitors the state of the UP and DOWN pins on the ADM1186-1 or the UP/overbar: DOWN pin on the ADM1186-2 to control the supply sequencing direction. In the ‘Wait Start’ state, a rising edge transition on the UP or UP/DOWN pin triggers a power-up sequence. A falling edge transition on the DOWN or UP/DOWN pin in the ‘Power Up Done’ state triggers a power down sequence. During a power up sequence, the state machine enables each power supply in turn. The supply output voltage is monitored to determine if it rises above the UV threshold level within a user defined duration called the blanking time. If a supply rises above the UV threshold then the next enable output in the sequence is turned on. In addition to the blanking time a user may also define sequencing time delays between each enable output turning on. When all four enable outputs are on, and the four VINx pins are above their UV trip points the power up sequence is complete. The ADM1186-1 provides an open drain pin, SEQ_DONE, that is asserted high to provide an indication that an up sequence is complete. The SEQ_DONE pins is allows multiple cascaded ADM1186-1 devices to be perform controlled power up and down sequences. During a power down sequence the enable outputs turn off in reverse order. The sequence time delays between successive supplies the same as during the power up sequence, and no blanking time is used during a power down sequence. At the end of a down sequence the SEQ_DONE pin is brought low. During sequencing and when powered up, the state machine continuously monitors for any fault conditions. Faults include a UV condition on any of the inputs, or an unexpected control input. Any fault that occurs causes the state machine to enter a fault handler. This immediately turns off all enable outputs, and ensures that the device is ready to start a new up sequence. The ADM1186-1 has a bi-directional open drain pin, FAULT, that facilitates fault handling when using multiple devices. An ADM1186-1 experiencing a fault condition drives the FAULT pin low, causing other connected ADM1186-1devices to enter their own fault handling state.. The ADM1186-1 is available in a 20-lead QSOP package and the ADM1186-2 is available in a 16-lead QSOP package.

Part#	# Supplies Monitored	Volt Monitoring Accuracy	# Output Drivers	FET Drive/Enable Output	Voltage Readback	Supply Adj/Margining	Programming Method	Temp Sensor	Package	Price* (1000-4999)
ADM1060	7	2.5%	9	Both	-	-	SMBus	-	28 ld TSSOP	$6.50
ADM1062	10	1%	10	Both	12-bit ADC	12-bit ADC+6 DACs	SMBus	1 External, 1 Internal	40 ld LFCSP , 48 ld TQFP	$7.50
ADM1063	10	1%	10	Both	12-bit ADC	-	SMBus	1 Internal, 2 External	40 ld LFCSP , 48 ld TQFP	$8.25
ADM1064	10	1%	10	Both	12-bit ADC	-	SMBus	-	40 ld LFCSP , 48 ld TQFP	$7.75
ADM1065	10	1%	10	Both	-	-	SMBus	-	40 ld LFCSP , 48 ld TQFP	$5.75
ADM1066	12	1%	10	Both	12-bit ADC	12-bit ADC+6 DACs	SMBus	-	40 ld LFCSP , 48 ld TQFP	$8.50
ADM1067	10	1%	10	Both	-	6 DACs	SMBus	-	40 ld LFCSP , 48 ld TQFP	$6.50
ADM1068	8	1%	8	Both	-	-	SMBus	-	32 ld LQFP	$4.00
ADM1069	8	1%	8	Both	12-bit ADC	12-bit ADC+4 DACs	SMBus	-	32 ld LQFP	$4.35
ADM1085	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1086	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1087	Cascadeable	7%	1	Enable	-	-	Analog	-	6 ld SC70	$0.34
ADM1088	Cascadeable	-	1	Enable	-	-	Analog	-	6 ld SC70	-
ADM1184	4	-	4	Enable	-	-	Analog	-	-	$2.39
ADM1185	4	0.8%	4	Enable	-	-	Analog	-	10-Lead MSOP	$1.20
ADM6819	2	2.6%	1	FET Drive	-	-	Analog	-	6-ld SOT-23	$1.20
ADM6820	2	2.6%	1	FET Drive	-	-	Analog	-	6-ld SOT-23	$1.20

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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• Automotive: -40 to +125 degrees Celsius

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