TS9007 300mA Ultra-Low-Noise, High PSRR LDO Regulator Pin assignment 1. Input 2. Ground 3. Enable 4. Bypass 5. Output Low Drop Out Voltage 0.45V Low Quiescent Current High PSRR General Description The TS9007 series is 300mA ultra-low-noise LDO especially designed for battery-power RF and wireless applications. The TS9007 regulator achieves a low 450mV dropout at 300mA load current of 3.3V output, ultra-low output voltage noise of 15uVrms and PSRR of 57dB at 1KHz. The TS9007 regulators are also optimized to work with low-ESR and low cost ceramic capacitors reducing the amount of board space critical in hand-held devices. The TS9007 requires only 0.47uF output capacitor for stability with and load. The TS9007 consumes less than 1uA in shutdown mode. Available in SOT-25 package. Features Ordering Information 450mV Dropout at 300mA load (3.3V) Part No. Ultra low noise TS9007xCX5 Output current up to 300mA Operating Temp. (Ambient) Package -40 ~ +85 oC SOT-25 Note: Where x denotes voltage option, available are D= 1.8V K= 2.5V N= 2.8V O= 2.9V P= 3.0V R= 3.2V S= 3.3V Contact factory for additional voltage options Low quiescent current: 90µA Output voltage +/-2% Internal current limit and thermal shutdown Power saving shutdown mode (<1uA) Applications Only need input and output capacitors Palmtops, PDA and Notebook Computers Build-In internal Soft-Start DSC, Handset Camera Modules Output short-circuit current limit protection Stable with 0.47uF ceramic capacitor for load Green package (RoHS) available PCMCIA Cards, PC Cameras USB Based Portable Devices (MPS, PMP) GSM/GPRS/3G RF Transceiver Modules Block Diagram Wireless LANs Bluetooth Portable Radios Typical Application Circuit TS9007 series 1-5 2006/02 rev. C Absolute Maximum Rating Supply Voltage Input Supply Voltage (Recommended) Vin -0.3 ~ +7 V Vopr +2 ~ +6 V Output Short-Circuit Duration Infinite Power Dissipation Pd Thermal Resistance mW o Өja 260 Tj +150 o C -65 ~ +150 o C Junction Temperature Range Storage Temperature Range 380 Tstg o Lead Soldering Temperature (260 C) 5 C/W S Caution: Stress above the listed absolute rating may cause permanent damage to the device. Electrical Characteristics Ta = 25 oC, Vin= (VOUT+1V), Cin=Cout=0.47uF, Ven=Vin, unless otherwise specified. Parameter Conditions Min Typ Max -2.0 -- +2 % -- 200 -- mA 300 -- -- mA %/V Output Voltage Vin =Vo + 1V, IO=10mA Output Current Limit Short-circuit output Maximum Output Current Vin =Vo+1V, Line Regulation Vin=(VOUT+1V) to 6V, IO=10mA -- 0.3 -- Load Regulation Vin=Vo+1V, Vout≥2.5V -- 0.2 1.0 1mA≤IL≤300mA Vin=Vo+1V, Unit % Vout<2.5V -- 0.2 1.0 Vout≥2.5V -- 500 600 Vout<2.5V -- 800 1000 1mA≤IL≤200mA Dropout Voltage Io=300mA, mV Vout=Vo - 2% Io=200mA, Vout=Vo - 2% Shutdown Supply Current EN=0V -- 0.01 -- uA Ground Pin Current Io=0mA -- 90 150 uA Ripple Rejection (PSRR) Output Noise f=100Hz, Io=1mA -- 55 -- f=1KHz, Io=1mA -- 75 -- f=10kHz, Io=1mA -- 55 -- Io=10mA, f=10Hz to 100kHz, -- 45 -- -- 15 -- Bypass = 0nF Io=10mA, f=10Hz to 100kHz, dB uVrms Bypass = 30nF Shutdown Exit Delay (note 2) RLOAD = 50Ω -- 45 300 EN Logic Low Level Vin=2.0V to 5.5V -- -- 0.4 EN Logic High Level Vin=2.0V to 5.5V 1.5 -- VIN EN Input Bias Current Vin=2.0V to 5.5V -- -- -- uA Thermal Shutdown Shutdown Temperature -- 160 -- o C o C Thermal Shutdown Hysteresis -20 -Note 1: The drop out voltage varies depending on output voltage selection Dropout is defined as Vin - Vout when Vout is 100mV below Vout where Vin = Vout+1V for nominal Vout Note 2: Time needed for Vout to reach 90% of final value TS9007 series 2-5 2006/02 rev. C uS V Functional Description Description The TS9007 is an ultra-low-noise, low-quiescent current, low-dropout linear regulator. It is supplied in a SOT-25 package for difference applications. This device can supply loads up to 300mA. As shown in the functional block diagram, the TS9007 consists of a reference and noise bypass circuit, error amplifier, output drive transistor, internal feedback voltage divider, thermal sensor, and short circuit current limiter. The internal reference is connected to the error amplifier’s inverting input. The error amplifier compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass=transistor gate is pulled low. This allows more current to pass to the output and increases the output voltage. Stability The TS9007 is a high performance LDO emphasizing stability with low output capacitance. It is able to maintain stability with an output capacitor can also be increased to optimize performance. The TS9007 will remain stable and in regulation with no load, unlike many other voltage regulators. Internal P-Channel Pass Transistor The TS9007 features alow impedance P-channel MOSFET pass transistor. This provides several advantages over similar designs using a PNP pass transistor, including low operating power and longer battery life. The TS9007 consumes only 90µA of quiescent current under most conditions. Output Short-Circuit Current Limit The TS9007 includes a current limiter, which monitors and controls the pass transistor’s gage voltage, limiting the output current to about 200mA, for example, in a short-circuit output situation. Shutdown The TS9007 also features a low-power active shutdown mode. It has a switch that turns off the device when disabled. This allows the output capacitor and load to discharge and de-energize the load. In the shutdown mode, the internal functional blocks, such as voltage reference and the error amplifier, are turned off completely, and the quiescent current is less than 1µA. Thermal Protection Shutdown The thermal protection shutdown function protects the device from operating in over temperature condition. When the o junction temperature exceeds +160 C, the thermal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to tool down. The thermal sensor turns the pass transistor on again after the IC’s junction o temperature drops to +140 C. Soft-Start Circuitry The TS9007 includes a soft-start circuitry to limit inrush current at turn-on. During power up, the output capacitor and output load are charged with a reduce output current. Shortly after the initial power up, the soft-start feature is terminated and normal operation is resumed. Application Information Enable / Shutdown The TS9007 comes with and active-high enable pin that allows the regulator to be enabled. Forcing the enable pin low disables the regulator and puts it into the shutdown mode. This pin cannot be left floating as it may cause an undetermined state. Input / Output Capacitor It is recommended to use a 0.47uF capacitor on the TS9007 input and a 0.47uF capacitor on the output. For high regulation performance, larger input capacitor values and lower ESRs provide better noise rejection and line-transient response. The output noise, load-transient response, stability, and power-supply rejection can be improved by using large output capacitors. Low ESR ceramic capacitors provide optimal performance and save space. Power Supply Rejection and Transient Response The PSRR and transient response can be improved by increasing the values of the input and output bypass capacitors, and through passive filtering techniques TS9007 series 3-5 2006/02 rev. C Electrical Characteristics Curve Dropout Voltage vs. Load Current Dropout Voltage vs. Temperature Ground Current vs. Input Voltage Output Voltage vs. Temperature PSRR vs. Frequency PSRR vs. Frequency TS9007 series 4-5 2006/02 rev. C SOT-25 Mechanical Drawing DIM A B C D E F H L TS9007 series 5-5 SOT-25 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 2.70 3.00 0.106 0.118 0.25 0.50 0.010 0.020 1.90(typ) 0.075(typ) 0.95(typ) 0.037(typ) 1.50 1.70 0.059 0.067 1.05 1.35 0.041 0.053 2.60 3.00 0.102 0.118 0.60(typ) 0.024(typ) 2006/02 rev. C