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ADM1052

Features: Two Independent Controllers on One ChipTwo 2.525 V OutputsShutdown Inputs to Control Each Channel±2.5% Accuracy Over Line, Load, and TemperatureLow Quiescent CurrentLow Shutdown CurrentWorks with External N-Channel MOSFETs for Low Cost Hiccup Mode Fault ProtectionNo External Voltage or ...

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SeekIC No. : 004275530 Detail

ADM1052: Features: Two Independent Controllers on One ChipTwo 2.525 V OutputsShutdown Inputs to Control Each Channel±2.5% Accuracy Over Line, Load, and TemperatureLow Quiescent CurrentLow Shutdown CurrentWor...

ADM1052 Data Sheet

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Part Number:
ADM1052
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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


Application

Desktop Computers
Servers
Workstations


Pinout

Connection Diagram


Specifications

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


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.




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