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ADM1014JRU
Dual PCI Hot-PlugTM Controller
REV. PrN 1/02
Dual PCI Hot-PlugTM Controller
FUNCTIONAL BLOCK DIAGRAM
ADM1014–SPECIFICATIONS
(Specifications are for each channel, 3.3VAUX=AUXINA=3.3V, VCC = 12VIN = +12V, -12VIN = -12V, Nominal 3.3V and 5V supplies to external
MOSFETs, TA = 0oC to +70oC, unless otherwise noted.)FEATURES
Controls Two PCI Slots
Controls all Four PCI Supplies, +3.3V, +5V, +12V,
-12V, plus 3.3V auxiliary supply
Internal MOSFET Switches for +3.3V AUX, +12V
and –12V outputs
Adjustable Overcurrent Protection for all Outputs
Undervoltage Protection on +3.3V, +5V, +12V and
+3.3V AUX Supplies
Open-Drain Fault Output with Adjustable Delay
Logic Control of Outputs
Adjustable Soft-start
APPLICATIONS
Compact PCI
PCI Hot-PlugTM
GENERAL DESCRIPTIONThe ADM1014 is a dual PCI voltage bus controller that allows
hot-plugging of adapter cards into and out of an active or pas-
sive backplane. The device requires only four external power
MOSFETs and a few discrete components for a complete
power-control solution for two PCI slots.
The ADM1014 operates from a +12V and +3.3V AUX supply
and controls five independent supplies (+3.3V, +3.3VAUX,
+5V, +12V and –12V) on two separate channels (A and B).
The power switches for the +3.3VAUX, +12V and –12V
supplies are integrated onto the chip, and internal current
limiting is provided. For the +3.3V and +5V supplies, the
device drives external, N-channel, power MOSFETs, and
provides overcurrent protection by sensing the voltage drop
across external current-sense resistors.
The current limits for all 10 supplies are set by a single resistor
to GND, connected to the OCSET pin.
Undervoltage sensing is provided on the +3.3V, +5V, +12V
and +3.3VAux supplies. Overcurrent sensing is provided on all
supplies. In the event of an overcurrent or undervoltage fault on
any of the outputs of either channel, all outputs on that channel
will be turned off.
Turn-on slew rate may be controlled using eight external
capacitors, connected to the gate drives of all of the supplies.
Logic control of the four main outputs is provided by the
PWRONA and PWRONB pins. When these pins are high, the
outputs are turned on, when low, the outputs are turned off.
The +3.3VAUX supplies have their own control inputs,
PAUXA and PAUXB.
ADM1014–SPECIFICATIONS (Continued)
(Specifications are for each channel, 3.3VAUX=AUXINA=3.3V, VCC = 12VIN = +12V, -12VIN = -12V, Nominal 3.3V and 5V supplies to external
MOSFETs, TA = 0oC to +70oC, unless otherwise noted.)NOTES
Specifications subject to change without notice.
ADM1014–SPECIFICATIONS
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS*(TA = +25°C unless otherwise noted)
VCC , 12VIN . . . . . . . . . . . . . . . . . . . . . . . . .-0.5V to +14.0V
12VO, 12VG, 3V5VG . . . . . . . . . . -0.5V to V 12VIN +0.5V
-12VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . -14.0V to +0.5V
-12VO, -12VG . . . . . . . . . . . . . . . . . . .V-12VIN -0.5V to +0.5V
3VISEN, 5VISEN . . .-0.5V to the Lesser of 12VIN or +7.0V
Voltage, Any Other Pin . . . . . . . . . . . . . . . . . .-0.5V to +7.0V
12VO Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . .3A
-12VO Output Current . . . . . . . . . . . . . . . . . . . . . . . . . .0.8A
Continuous Power Dissipation (TA = +70oC) . . . . . .667mW
TSSOP (derate 8.3mW/oC above +70oC)
Operating Temperature Range
Commercial (J Version) . . . . . . . . . . . . . . . .0°C to +70°C
Storage Temperature Range . . . . . . . . . . .–65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . .+300°C
*This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operation sections of this speci-
fication is not implied. Exposure to absolute maximum rating conditions for
extended periods of time may affect reliability.
THERMAL CHARACTERISTICS38-Pin TSSOP Package:
qJA = 100°C/Watt, qJC = 10°C/Watt
ORDERING GUIDE
PIN FUNCTION DESCRIPTION
ADM1014 PIN FUNCTION DESCRIPTION (CONTINUED)
