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| DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 FEATURES 180mV Typical Dropout with 150mA Load 2.0% Voltage Accuracy High PSRR: 70dB@100Hz Low noise output Current Limit Thermal Shutdown Protection Short Circuit Protection Very small USP6 Package GENERAL DESCRIPTION The dual LDO FSP2151 series of positive voltage linear regulators feature high output voltage accuracy, low quiescent current and low dropout voltage, making them ideal for battery powered applications. The line transient response and load transient response are excellent. Their high PSRR make them useful in applications where AC noise on the input power supply must be suppressed. Space-saving USP6 package for 2ch LDOs is attractive for portable and handheld applications. They have both thermal shutdown and a current limit feature to prevent device failure under extreme operating conditions. They are stable with an output capacitance of 2.2uF or greater. APPLICATIONS Cellular Handsets Portable Electronics, PDA Wireless Devices, LAN Computer Peripherals Camera Module GPS Receiver PIN CONFIGURATION (Bottom View) PIN DESCRIPTION Pin Number 1 2 3 4 5 6 Pin Name EN2 VDD EN1 GND VOUT1 VOUT2 Pin Function Enable pin for LDO2. Connect EN2 to IN or to a logic high for normal operation, drive EN2 to G or a logic low to disable the regulator. Do not leave EN2 floating. Input Voltage. Bypass this pin with a 1F capacitor connected to G, placed as close to the IC as possible. Enable pin for LDO1. Connect EN1 to IN or to a logic high for normal operation, drive EN1 to G or a logic low to disable the regulator. Do not leave EN1 floating. Ground. LDO1 Output. Bypass this pin with a 1F capacitor connected to G. OUT1 is actively discharged to G through 800 when disabled. LDO2 Output. Bypass this pin with a 1F capacitor connect to G. OUT2 is actively discharged to G through 800 when disabled. 1/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 ABSOLUTE MAXIMUM RATINGS Parameter Input Voltage Output Pin Voltage Output Current Internal Power Dissipation) ESD Rating(HBM) Operating Junction Temperature Operating Ambient Temperature Storage Temperature Rating 6 GND-0.3 to VIN + 0.3 150/150 100 2000 -40 to 125 -40 to 85 -40 to 125 Unit V V mA mW V C C C C Lead Temperature (Soldering, 5 sec) 300 Note: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired (VIN = VOUT + 1V, EN1 =EN2= IN, CIN = 2.2F, COUT = 2.2F, TA= 25C unless otherwise specified.) Parameter Input Supply Range EN Input Voltage Output Voltage Accuracy Output Current Quiescent Current Shutdown Supply Current Short Circuit Current Ground Pin Current Line Regulation Load Regulation Power Supply Ripple Rejection IO=0mA Both outputs disabled VO= 0V IO=0mA to 150mA IO=50mA VIN = 3.0V to 4.0V IO=50mA VIN = 3.5V to 4.5V IO=50mA VIN = 3.8V to 4.8V VO= 1.8V VO= 2.5 VO= 2.8V -2 1.0 70 63 45 950 350 180 200 35 40 155 0.3 1.5 1.7 5 15 2 -0.15 0.1 0.15 IO=1mA Test Conditions Min Note 1 0 -2.0 150 175 0.1 150 200 250 Typ Max 5.5 VIN +2.0 Note 2 250 1 ELECTRICAL CHARACTERISTICS Unit V V % mA A A mA A %/V %/mA dB IOUT = 1mA to 150mA VIN= 3.3V f= 100Hz IO=50mA VO = 1.8V f= 1KHz f= 10KHz VOUT = 1.8V, IOUT = 150mA VOUT = 2.5V, IOUT = 150mA VOUT = 2.8V, IOUT = 150mA VOUT 1.2V f= 10Hz to 100KHz IO=1mA IO=1mA Dropout Voltage Current Limit Output Noise Over Temperature Hystersis Over Temperature Shutdown EN_ Logic Low Threshold EN_ Logic High Threshold EN Pull-up Resistance mV mA uVrms C C V V m Temperature Coefficient 40 ppm/C Note 1The minimum input voltage of the FSP2151 is determined by output voltage and dropout voltage. The minimum input voltage is defined as: VIN(MIN)=VO+VDROP Note 2Output current is limited by PD, maximum IO=PD/(VIN(MAX)-VO) 2/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 FUNCTIONAL BLOCK DIAGRAM TYPICAL APPLICATION CIRCUIT APPLICATION INFORMATION Capacitor Selection and Regulator Stability Similar to any low dropout regulator, the external capacitors used with the FSP2151 must be carefully selected for regulator stability and performance. Using a capacitor, CIN, whose value is2.2F at the FSP2151 input pin, the amount of the capacitance can be increased without limit. Please note that the distance between CIN and the input pin of the FSP2151 should not exceed 0.5 inch. Ceramic capacitors are suitable for the FSP2151. Capacitors with larger values and lower ESR provide better PSRR and line-transient response. The FSP2151 is designed specifically to work with low ESR ceramic output capacitors in order to save space and improve performance. Using an output ceramic capacitor whose value is 2.2F with ESR5m ensure stability. Shutdown Input Operation The FSP2151 is shutdown by pulling the EN input low, and is turned on by tying the EN input to VIN or leaving the EN input floating. Dropout Voltage A regulator's minimum dropout voltage determines the lowest usable supply voltage. The FSP2151 has a typical 180mV dropout voltage. In battery powered systems, this will determine the useful end-of-life battery voltage. Current Limit and Short Circuit Protection The FSP2151 features a current limit, which monitors and controls the gate voltage of the pass transistor. The output current can be limited to 300mA by regulating the gate voltage. The FSP2151 also has a built-in short circuit current limit. 3/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 TYPICAL PERFORMANCE CHARACTERISTICS (CIN = 2.2uF, CO = 2.2uF, TA = 25C unless otherwise specified.) 4/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 TYPICAL PERFORMANCE CHARACTERISTICSCONTINUED (CIN = 2.2uF, CO = 2.2uF, TA = 25C unless otherwise specified.) 5/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 TYPICAL PERFORMANCE CHARACTERISTICSCONTINUED (CIN = 2.2uF, CO = 2.2uF, TA = 25C unless otherwise specified.) 6/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 TYPICAL PERFORMANCE CHARACTERISTICSCONTINUED (CIN = 2.2uF, CO = 2.2uF, TA = 25C unless otherwise specified.) 7/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 TYPICAL PERFORMANCE CHARACTERISTICSCONTINUED (CIN = 2.2uF, CO = 2.2uF, TA = 25C unless otherwise specified.) Turn-on Response ORDERING INFORMATION FSP2151XXXX Package: U: USP6 Output Voltage: (Out 1, Out 2) A: 1.8V, 2.8V B: 1.8V, 2.5V Packing: A: Tape & Reel Temperature Grade: D: -40~85 MARKING INFORMATION xxv XX: Product code V: Output voltage (Out1; Out2) A: 1.8V; 2.8V B: 1.8V; 2.5V Date code: Y: Year (1=2001) M: Month (1~9, O, N, D) YM 8/9 2007-7-4 DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6 FSP2151 PACKAGE INFORMATION 9/9 2007-7-4 |
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