AP139-33WG-7

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 1 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Lead-free • Very Low Dropout Voltage • Low Current Consumption: Typ. 45μA, max. 60uA • Output Voltage: 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 3.0V 3.3V, and 3.5V • Guaranteed 300mA Output • Input Range from 2.7 up to 5.5V • Thermal Shutdown • Current Limiting • Stability with Low ESR Capacitors • Low Temperature Coefficient • Lead Free Package: SOT25 • SOT25: Available in “Green” Molding Compound (No Br, Sb) • Lead Free Finish/RoHS Compliant (Note 1) The AP139 is a positive voltage linear regulator utilizing CMOS technology. The features that include low quiescent current (45μA typ.), low dropout voltage, and high output voltage accuracy, make it ideal for battery applications. EN input connected to the device will produce a low bias current. The space-saving SOT25 package is attractive for “pocket” and “hand held” applications. This rugged device has both thermal shutdown, and current limit protections to prevent device failure under the “worst” operating conditions. In a low noise, regulated supply application, a 10nF capacitor is necessary to be placed in between Bypass and Ground. The AP139 is stable with a low ESR output capacitor of 1.0μF or greater. • Personal Communication Devices • Home Electric/Electronic Appliances • PC Peripherals • Battery-Powered Devices Output Voltage Package Packing W : SOT25 Lead Free G : Green 7 : Tape & ReelL : Lead Free AP139 - XX W X - 7 15 :1.5V 18 :1.8V 20 :2.0V 25 :2.5V 28 :2.8V 30 :3.0V 33 :3.3V 35 :3.5V Device Package Code Packaging (Note 2) 7” Tape and Reel Quantity Part Number Suffix AP139-XXWL-7 W SOT25 3000/Tape & Reel -7 AP139-XXWG-7 W SOT25 3000/Tape & Reel -7 Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Features General Description Applications Ordering Information

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 2 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated ( Top View ) SOT25 1 32 5 4 BYP V IN ENGND V OUT AP139 Pin Name Pin No. Description VIN 1 Power Supply GND 2 Ground EN 3 Enable Pin BYP 4 Bypass Signal Pin VOUT 5 Output Block Diagram Current Limit Thermal Shutdown AMP + - Vref BYP EN 1uA VOUT GND VIN R1 R2 Absolute Maximum Ratings Symbol Parameter Rating Unit VIN Input Voltage +6 V IOUT Output Current PD/(VIN-VO) mA VOUT Output Voltage GND - 0.3 to VIN+ 0.3 V ESD Classification B TOP Operating Junction Temperature Range -40 to +125 ºC TMJ Maximum Junction Temperature 150 ºC PD Internal Power Dissipation 250 mW Pin Assignments Pin Descriptions

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 3 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Recommended Operating Conditions Symbol Parameter Min Max Unit VIN Input voltage 2.7 5.5 V IOUT Output Current 0 300 mA TA Operating Ambient Temperature -40 85 °C Electrical Characteristics (TA = +25ºC, unless otherwise noted) Symbol Parameter Test Conditions Min Typ. Max Unit VIN Input Voltage Note 3 - 5.5 V IQ Quiescent Current IO = 0mA - 45 60 μA ISTB Standby Current VIN = 5.0V, VOUT = 0V, VEN < VEL - 2.0 3.0 μA VOUT Output Voltage Accuracy IO = 1mA, VIN = 5V -2 - 2 % VOUT Temperature Coefficient - 50 - ppm/ oC VDROPOUT Dropout Voltage IO = 1mA to 300mA, VOUT = VO(NOM) - 1.5% VO ≥2.8V - - 0.45 V IOUT Output Current 300 - - mA ILIMIT Current Limit VOUT > 1.05V 300 450 - mA Ishort Short Circuit Current Vcc = 5V, Vout < 1.05V - 150 300 mA △VLINE Line Regulation IOUT = 1mA, VIN = (VOUT +1V) to 5.5V - 0.1 0.3 % △VLOAD Load Regulation IO = 1mA to 300mA, VIN = 5V - 0.3 1 % PSRR Power Supply Rejection IO = 100mA, CO = 2.2μF ceramic f = 1KHz - 60 - dB f = 10KHz - 50 - f = 100KHz - 40 - PSRR Power Supply Rejection IO = 100mA, CO = 2.2μF ceramic, CBYP = 20nF f = 1KHz - 75 - dB f = 10KHz - 55 - f = 100KHz - 30 - VEH EN Input Threshold Output ON 1.7 - - V VEL Output OFF - - 0.8 V IEN Enable Pin Current - - <0.1 μA OTS Over Temperature Shutdown - 130 - oC OTH Over Temperature Hysteresis - 20 - oC θJA Thermal Resistance SOT25 (Note 4) 226 ºC/W θJC Thermal Resistance SOT25 (Note 4) 34 ºC/W Notes: 3. VIN(MIN) = VOUT + VDROPOUT. 4. Test conditions for SOT25: Devices mounted on FR-4 PC board, MRP, 1 oz. copper, single sided, calibrate at TJ=85 ºC, measure at TA=25 ºC, no heat Sink, no air flow.

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 4 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Application AP139 BYP EN V OUT GND V IN C1 1uF C2 10nF C3 1uF IN OUT Typical Performance Characteristics -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Power Supply Rejection Ratio P S R R ( dB ) Frequency (Hz) BP = 1nF BP = 5nF BP = 10nF BP = 20nF Iout = 100mA -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Power Supply Rejection Ratio P S R R ( dB ) Frequency (Hz) 100mA 10mA 1mA BP = 10nF 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 3 .5 4 4 .5 5 5 .5 6 V c c V s Q u ie s c e n t C u r r e n t V c c (V ) Q u ie sc e nt C ur re n t ( μ A ) T A = 2 5℃

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 5 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Performance Characteristics (Continued) -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1.0E+00 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Power Supply Rejection Ratio P S R R ( dB ) Frequency (Hz) 100mA 10mA 1mA BP=0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 1.5 1.8 2 2.5 2.8 3 3.3 3.5 C ur re nt L im it (A ) Vout Vs Current Limit Vcc=5V Vout (V) 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0 4 0 0 3 .5 4 4 .5 5 5 .5 6 V c c V s S h o r t C u rre n t V c c (V ) S h or t C ur re nt ( m A ) T o p to b o tto m V o u t= 1 .5 V V o u t= 1 .8 V V o u t= 2 .5 V V o u t= 3 .3 V Functional Description The AP139 of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown. The P-channel pass transistor receives data from the error amplifier, over-current protection, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. The over-current and thermal shutdown circuits become active when the junction temperature exceeds 130oC, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 110oC. The AP139 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. Enable The enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the quiescent current is less than 2μA. This pin behaves much like an electronic switch. External Capacitor The AP139 is stable with a low ESR output capacitor to ground of 1.0μF or greater. It can keep stable even with higher ESR capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be larger than 0.1μF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground termination is desirable.

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AP139 300mA LOW-NOISE CMOS LDO AP139 Rev. 6 6 of 7 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Marking Information (1) SOT25 1 2 3 5 74 XX Y W X XX : Identification code W : Week : A~Z : 1~26 week; X : a~z : Lead Free ( Top View ) Y : Year 0~9 a~z : 27~52 week; z represents 52 and 53 week A~Z : Green Part Number Package Identification Code AP139-15W SOT25 N0 AP139-18W SOT25 N1 AP139-20W SOT25 N2 AP139-25W SOT25 N3 AP139-28W SOT25 N4 AP139-30W SOT25 N5 AP139-33W SOT25 N6 AP139-35W SOT25 N7 Package Information (All Dimensions in mm)