uP7704 – 2A Ultra Low Dropout Linear Regulator

Part Number : uP7704

Function : 2A Ultra Low Dropout Linear Regulator

Manufactures : uPI Semiconductor

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uP7704 image

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pinout

Description :

uP7704 2A Ultra Low Dropout Linear Regulator General Description Features The uP7704 is a 2A ultra low dropout linear regulator specifically designed for motherboard, notebook and graphic card applications. This device works with dual supplies, a control input for the control circuitry and a power input as low as 1.2V for providing current to output. The uP7704 delivers high-current and ultra-low-drop output voltage as low as 0.8V for applications where VOUT is very close to VIN. The uP7704 features comprehensive control and protection functions: a power on reset (POR) circuit for monitoring both control and power inputs for proper operation; an EN input for enabling or disabling the device, a power OK with time delay for indicating the output voltage status, a foldback current limit function, and a thermal shutdown function. The uP7704 is available in PSOP-8 or WDFN3x3-10L packages with very low thermal resistance. Applications † Desktop PCs, Notebooks, and Workstations † Graphic Cards † Low Voltage Logic Supplies † Microprocessor and Chipset Supplies † Split Plane Microprocessor Supplies † Advanced Graphics Cards Supplies † SoundCards and Auxiliary Power Supplies † SMPS Post Regulators † Works with 1.2V~5.5V VIN „ Adjustable Output Voltage, Down to 0.8V „ 1.5% Initial Accuracy „ Excellent Line and Load Regulation † 2A Guaranteed Output Current „ 300mV @ 2A Dropout Voltage † Very Low On-Resistance „ 150mΩ typical † VOUT Pull Low Resistance when Disabled † VOUT Power OK Signal † Fast Transient Response † Low External Component Count † Low Cost and Easy to Use † Enable Pin † Over Current and Over Temperature Protection Ordering Information Order Number uP7704U8 uP7704ADDA Package Type PSOP-8 WDFN3x3-10L Remark Note: uPI products are compatible with the current IPC/ JEDEC J-STD-020 and RoHS requirements. They are 100% matte tin (Sn) plating and suitable for use in SnPb or Pbfree soldering processes. Pin Configuration & Typical Application Circuit POK EN VIN CNTL 18 27 GND 36 45 PSOP-8 GND FB VOUT NC VOUT 1 VOUT 2 VOUT 3 FB 4 POK 5 GND 10 CNTL 9 VIN 8 VIN 7 VIN 6 EN WDFN3x3-10L 5VCC R4 10R VIN C1 1uF C2 4.7uF CNTL EN POK R3 VIN 10K VOUT VOUT uP7704 R2 12.5K C4 option FB NC R1 C3 10K 10uF GND uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP7704-DS-F0001 1 uP7704 Functional Pin Description Pin No. Name Pin Function PSOP WDFN 1 5 POK Power OK Indication. This pin is an open-drain output and is set high impedance once VOUT reaches 90% of its rating voltage. 2 6 EN Enable Input. Pulling this pin below 0.4V turns the regulator off, reducing the quiescent current to a fraction of its operating value. Input Voltage. This is the drain input to the power device that supplies current to the output pin. Large bulk capacitors with low ESR should be placed physically close to this pin o prevent 3 7, 8, 9 VIN the input rail from dropping during large load transient. A 4.7uF c […]

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uP7704 Datasheet


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