FP6137FSPCTR

FP6137F fitipower integrated technology lnc. 3A BUS TERMINATION REGULATOR Description Features The FP6137F linear regulator is designed to provide the transient peaks up to 3A sourcing or sinking capability for DDR SDRAM bus termination application. The output voltage can track half of input power by two external voltage divider resistors. ● Peak 3A Source or Sink Current ● Power MOSFET Integrated ● Low Output Voltage Offset ● Built-in Soft-start ● Current Limiting Protection ● Thermal Shutdown Protection ● Adjustable Output by External Resistors ● Shutdown for Standby or Suspend Mode ● RoHS Compliant The FP6137F provides current limiting in both sourcing/sinking mode and thermal shutdown function which protects the excessive heating due to high current and high junction temperature. The FP6137F is available in SOP-8 (Exposed Pad) package. Applications ● DDR-I, DDR-II, DDR-III ,and DDR-IIIL Bus Termination Voltage ● SSTL-2 and SSTL-3 Termination ● Active Termination Buses Pin Assignments SP Package (SOP- 8) Ordering Information FP6137F□□□ TR: Tape/Reel C: Green Package Type SP: SOP-8 (Exposed Pad) Figure 1. Pin Assignment of FP6137F (Top View) FP6137F-0.2-JUL-2011 1 fitipower integrated technology lnc. FP6137F Typical Application Circuit Figure 2. Typical Application Circuit of FP6137F with EC Capacitors Figure 3. Typical Application Circuit of FP6137F with MLCC Capacitors Functional Pin Description Pin Name Pin Function VIN Power input pin. VIN is the input power supply used to create the external reference voltage for regulating VOUT. VIN sources current to VOUT by upper NMOS. GND Common ground pin. The VOUT sinks current to GND by lower NMOS. VCNTL Power input pin. The VCNTL power supplies the internal control circuitry and gate drive voltage. REFEN Chip enable, and input reference voltage pin. The reference voltage is half of the VIN power by two external voltage divide resistors. VOUT Regulator output pin. to peak 3A. FP6137F-0.2-JUL-2011 VOUT voltage tracks the REFEN voltage and is capable of sourcing or sinking current up 2 fitipower integrated technology lnc. FP6137F Block Diagram Figure 4. Block Diagram of FP6137F Absolute Maximum Ratings ● VIN to GND --------------------------------------------------------------------------------------- 6V ● VCNTL to GND ---------------------------------------------------------------------------------- 6V ● Power Dissipation @25°C (P D) SOP-8 (Exposed Pad) -------------------------------- 1.25W ● Package Thermal Resistance (θJA) SOP-8 (Exposed Pad) --------------------------- 80°C/W ● Junction Temperature -------------------------------------------------------------------------- 150°C ● Storage Temperature Range ----------------------------------------------------------------- -65°C to +150°C ● Lead Temperature (Soldering, 10sec.) ----------------------------------------------------- 260°C Note 1：Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device. Recommended Operating Conditions ● Input Voltage (VIN) ------------------------------------------------------------------------------- (1.35V,1.5V,1.8V, 2.5V) ±5% ● Input Voltage (VCNTL) ---------------------------------------------------------------------------- (3.3V to 5.5V) ±5% ● Operating Temperature Range (TOPR) ------------------------------------------------------ -40ºC to +85ºC FP6137F-0.2-JUL-2011 3 FP6137F fitipower integrated technology lnc. Electrical Characteristics (VCNTL=3.3V, VIN=1.35V/1.5V/1.8V/2.5V, VREFEN=0.5*VIN, COUT=10µF, TA=25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units 3.3 5.5 V 1.5 3.0 mA 5 30 µA 0 20 mV INPUT Operation Voltage Range (DDRI /DDII/ DDR-III/ DDR-IIIL) VCNTL VCNTL Quiescent Current ICNTL Shutdown Current No Load ISD VREFEN