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Part Number: ADM1052
Description: The ADM1052 is a dual, precision, voltage regulator controller intended for power rail generation and ...
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ADM1052
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DataSheet
General Description
ADM1052 General Description
The ADM1052 is a dual, precision, voltage regulator controller intended for power rail generation and active bus termination on personal computer motherboards. It contains a precision 1.2 V bandgap reference and two channels consisting of control amplifiers driving external power devices. Each channel has a shutdown input to turn off amplifier output and "Hiccup Mode" protection circuitry for the external power device.
The ADM1052 operates from a 12 V supply. This gives sufficient headroom for the amplifiers to drive external N-channel MOSFETs, operating as source-followers, as the external series pass devices. This has the advantage that N-channel devices are cheaper than P-channel devices of similar performance, and the circuit is easier to stabilize than one using P-channel devices in a common-source configuration.
ADM1052 Maximum Ratings
VCC to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 V
SENSE1, SENSE2 to GND . . . . . . . . . . . . 0.3 V to +5.5 V
FORCE1, FORCE2 . . . . . . . . Short-Circuit to GND or VCC
Continuous Power Dissipation (TA = 70°C) . . . . . . . 650 mW
8-Lead SOIC . . . . . . . . . . . (Derate 8.3 mW/°C above 70°C)
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
SENSE1, SENSE2 to GND . . . . . . . . . . . . 0.3 V to +5.5 V
FORCE1, FORCE2 . . . . . . . . Short-Circuit to GND or VCC
Continuous Power Dissipation (TA = 70°C) . . . . . . . 650 mW
8-Lead SOIC . . . . . . . . . . . (Derate 8.3 mW/°C above 70°C)
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
ADM1052 Features
Two Independent Controllers on One Chip
Two 2.525 V Outputs
Shutdown Inputs to Control Each Channel
±2.5% Accuracy Over Line, Load, and Temperature
Low Quiescent Current
Low Shutdown Current
Works with External N-Channel MOSFETs for Low Cost
"Hiccup Mode" Fault Protection
No External Voltage or Current Setting Resistors
Small, 8-Lead SO Package
Two 2.525 V Outputs
Shutdown Inputs to Control Each Channel
±2.5% Accuracy Over Line, Load, and Temperature
Low Quiescent Current
Low Shutdown Current
Works with External N-Channel MOSFETs for Low Cost
"Hiccup Mode" Fault Protection
No External Voltage or Current Setting Resistors
Small, 8-Lead SO Package
ADM1052 Typical Application
Desktop Computers
Servers
Workstations
Servers
Workstations
ADM1052 Connection Diagram
ADM1052
PDF/DataSheet Download
- Datasheet: ADM1052
- File Size: 168022 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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