LP5990

LP5990 Micropower 200mA CMOS Low Dropout Voltage Regulator December 18, 2007 LP5990 Micropower 200mA CMOS Low Dropout Voltage Regulator General Description The LP5990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise and low quiescent current. The LP5990 will provide a 1.8V output from a low input voltage of 2.2V and can provide 200mA to an external load. When switched into shutdown mode via a logic signal at the enable pin, the power consumption is reduced to virtually zero. Fast shut-down is achieved by the push pull architecture. The LP5990 is designed to be stable with space saving 0402 ceramic capacitors as small as 1µF, this gives an overall solution size of < 2.5mm 2. Performance is specified for a -40°C to 125°C junction temperature range. The device is available in micro SMD Package (0.4mm pitch) and is available with 1.2V,1.3V,1.8V,2.8V,3.0V,3.3V and 3.6V outputs.Lower voltage options down to 0.8V are available on request. For all other output voltage options please contact your local NSC sales office. Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Operation from 2.2V to 5.5V input ±1% accuracy over temp range Output voltage from 0.8V to 3.6V in 50mV increments 30 μA Quiescent current (enabled) 10nA Quiescent current (disabled) 160mV dropout at 200mA load 60 μVRMSOutput voltage noise 60 μs start-up time 500μs shut-down time PSRR 55 dB at 10 kHz Stable with 0402 1.0µF ceramic capacitors Logic controlled enable Thermal–overload and short–circuit protection Package 4-Bump micro SMD,0.4mm pitch (lead free) 866 µm x 917 µm Applications ■ Cellular phones ■ Hand–held information appliances Typical Application Circuit 20184801 © 2007 National Semiconductor Corporation 201848 www.national.com LP5990 Connection Diagrams 4-Bump Thin micro SMD Package, 0.4mm pitch NS Package Number TMD04 20184802 The actual physical placement of the package marking will vary from part to part. Pin Descriptions Pin No. micro SMD A2 A1 B1 B2 VEN GND VOUT VIN Enable input; disables the regulator when ≤ 0.35V. Enables the regulator when ≥ 1.0V. Common ground. Output voltage. A 1.0 μF Low ESR capacitor should be connected to this Pin. Connect this output to the load circuit. Input voltage supply. A 1.0 µF capacitor should be connected at this input. Symbol Name and Function Ordering Information micro SMD Package (Lead Free) Output Voltage (V) 1.2 1.3 1.8 2.8 3.0 3.3 3.6 LP5990TM-1.2/NOPB LP5990TM-1.3/NOPB LP5990TM-1.8/NOPB LP5990TM-2.8/NOPB LP5990TM-3.0/NOPB LP5990TM-3.3/NOPB LP5990TM-3.6/NOPB Supplied As 250 Units Tape and Reel 3k Units Tape and Reel LP5990TMX-1.2/NOPB LP5990TMX-1.3/NOPB LP5990TMX-1.8/NOPB LP5990TMX-2.8/NOPB LP5990TMX-3.0/NOPB LP5990TMX-3.3/NOPB LP5990TMX-3.6/NOPB www.national.com 2 LP5990 Absolute Maximum Ratings (Notes 1, 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. VIN Pin: Input Voltage VOUT Pin: Output Voltage VEN Pin: Enable Input Voltage Continuous Power Dissipation (Note 3) Junction Temperature (TJMAX) Storage Temperature Range Maximum Lead Temperature (Soldering, 10 sec.) ESD Rating (Note 4) -0.3 to 6.0V -0.3 to (VIN + 0.3V) to 6.0V (max) -0.3 to 6.0V (max) Internally Limited 150°C -65 to 150°C 260°C Human Body Model Machine Model 2 kV 200V (Note 1), (Note 2) 2.2V to 5.5V 0 to 5.5V (max) 0 to 200 mA -40°C to +125°C -40°C to +85°C Operating Ratings VIN: Input Voltage Range VEN: Enable Voltage Range Recommended Load Current (Note 5) Junction Temperature Range (TJ) Ambient Temperature Range (TA) (Note 5) Thermal Properties Junction to Ambient Thermal Resistance θJA (Note 6) JEDEC Board (microSMD) (Note 14) 100.6°C/W 4L Cellphone Board (microSMD) 174.8°C/W Electrical Characteristics Limits in standard typeface are for TA = 25°C. Limits in boldface type apply over the full operating junction temperature range (-40° C ≤ TJ ≤ +125°C). Unless otherwise noted, specifications apply to the LP5990 Typical Application Circuit (pg. 1) with: VIN = VOUT (NOM) + 1.0V, or 2.2V, whichever is higher. VEN = 1.0V, CIN = COUT = 1.0 μF, IOUT = 1.0 mA. (Note 2), (Note 7) Symbol VIN ΔVOUT Parameter Input Voltage Output Voltage Tolerance Line Regulation Load Regulation ILOAD IQ Load Current Maximum Output Current Quiescent Current (Note 10) VEN = 1.0V, IOUT = 0 mA VEN = 1.0V, IOUT = 200 mA VEN =