LM8805

600mA CMOS L.D.O. Regulator FEATURES Maximum output current : 600mA Highly accurate: Output voltage ±1.5% Stability with Low ESR Capacitors Low power consumption On-chip Protections: Thermal, Short Circuit Small input/output differential: 600mV at 600mA Adjustable version SOT-23 5L PKG LM8805 APPLICATION Battery-Operated Systems Portable Computers Portable Cameras and Video Recorders Reference Voltage Sources Instrumentation Pagers SOT-89 3L PKG DESCRIPSION The LM8805 series is a low-dropout linear regulator. There are devices designed specifically for batteryoperated systems. Ground current is very small (50uATyp), that significantly extending battery life. Low power consumption and high accuracy is achieved through CMOS and programmable fuse technologies. Output voltage: 1.5V to 6.0V. SOT-23-5L(300mW) and SOT-89(500mW) packages are available. ORDERING INFORMATION Device LM8805SF5-XX LM8805F-XX Package SOT-23-5L SOT-89 XX = Output Voltage = ADJ, 1.2V, 2.5V, 3.3V Absolute Maximum Ratings CHARACTERISTIC Input Voltage Output Current Output Voltage Storage Temperature Range Operating Ambient Temperature SYMBOL VIN IOUT VOUT TSTG TA MIN. VSS -0.3 -40 -40 MAX. 8 1 VIN +0.3 125 125 UNIT V A V ℃ ℃ Aug. 2010 - Rev. 1.5.1 -1 - HTC 600mA CMOS L.D.O. Regulator Ordering Information VOUT ADJ 1.2 V Package SOT-23 5L SOT-23 5L SOT-89 3L SOT-23 5L SOT-89 3L SOT-23 5L SOT-89 3L Order No. LM8805SF5-ADJ LM8805SF5-1.2V LM8805F-1.2V LM8805SF5-2.5V LM8805F-2.5V LM8805SF5-3.3V LM8805F-3.3V Description 600mA, Enable, Adjustable 600mA, Fixed 600mA, Fixed 600mA, Fixed 600mA, Fixed 600mA, Fixed 600mA, Fixed Supplied As Reel Reel Reel Reel Reel Reel Reel LM8805 Status Active Contact us Contact us Active Active Active Active 2.5 V 3.3 V LM 8805 Output Voltage : ADJ / 1.2V / 2.5V / 3.3V Package Type Root Name Product Code { SF5 :: SOT-23 5L F SOT-89 PIN CONFIGURATION VOUT BYP/ADJ 5 1 VIN 2 GND 4 3 EN 1 2 3 GND VIN VOUT SOT-23 5L SOT-89 3L PIN DESCRIPTION Pin No. 1 2 3 4 5 Aug. 2010 - Rev. 1.5.1 SOT-23 5L Name VIN GND EN BYP/ADJ VOUT Function Input Supply Ground Enable Bypass for Fixed output or Output adjust for Adjustable output Output Voltage -2 SOT-89 3L Name GND VIN VOUT Function Ground Input Supply Output Voltage - HTC 600mA CMOS L.D.O. Regulator TYPICAL APPLICATION Typical 3 Pin Application Circuit LM8805 VIN CIN VIN VOUT VOUT LM8805-X.X GND COUT Typical 5 Pin Application Circuit - Output Adjustment (Adjustable version) VIN VIN VOUT R2 COUT R1 VOUT LM8805-ADJ CIN EN GND ADJ VOUT = VADJ(1+R2/R1) - Fixed Voltage Application VIN VIN VOUT VOUT LM8805-X.X CIN EN GND BYP* CBYP (Optional) COUT * Note) BYP pin can be left open if low noise operation is not required. Aug. 2010 - Rev. 1.5.1 -3 - HTC 600mA CMOS L.D.O. Regulator ELECTRICAL CHARACTERISTICS (At TA =25℃, VIN = VOUT(nominal) + 1V, unless otherwise noted) PARAMETER Output Voltage Accuracy Adjustable Voltage line Regulation Load Regulation (Note 1) LM8805 SYMBOL VO VADJ ΔVLINE ΔVLOAD TEST CONDITION IO = 1mA IO = 1 to 600mA IO = 1mA IO = 1 to 600mA IO = 1mA, (VOUT+1V) 0.96*VRating 600 1300 mA mA usec 100 nA uA 1 0.4 uA V V 50 155 10 30 55 85 uA ℃ ℃ ppm dB CBP = 0uF, COUT = 1uF IO = 100mA VEN = GND VEN = VIN VEN = VIN VIL VIH IGND TSD ΔTSD VIN = 2.5 to 5.5V VIN = 2.5 to 5.5V IOUT = 0mA to 600mA IOUT = 10mA IOUT = 10mA IOUT = 10mA PSRR IOUT = 100mA, COUT = 2.2uF, f = 100Hz 2 -1 600 -0.3 0.01 Note 1. Load Regulation is measured using pulse techniques with duty cycle < 5% OPERATING CHARACTERISTICS T.B.D APPLICATION INFORMATION Detailed Description The LM8805 consists of a high-precision voltage reference, an error correction circuit, and a current limited output driver. With good transient responses, output remains stable even during load changes. The SHDN input enables the output to be turned off, resulting in reduced power consumption. The LM8805 incorporates both over-temperature and over-current protection. Aug. 2010 - Rev. 1.5.1 -4 - HTC 600mA CMOS L.D.O. Regulator External Capacitors The LM8805 can stable work with cheap MLCC output Capacitor. LM8805 The LM8805 having high ripple rejection ratios, the series can be used with power supply noise. A 470pF capacitor from the Bypass input to ground reduces noise present on the internal reference, which in turn significantly reduces output noise. If output noise is not a concern, this input may be left unconnected. Larger capacitor values Cbp be used, but results in a longer time period to rated output voltage when power is initially applied. Aug. 2010 - Rev. 1.5.1 -5 - HTC