AP139 300mA LOW-NOISE CMOS LDO General Description Features • • • • • • • • • • • • 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. Applications • • • • Personal Communication Devices Home Electric/Electronic Appliances PC Peripherals Battery-Powered Devices Ordering Information AP139 - XX W X - 7 Device Lead-free AP139-XXWL-7 AP139-XXWG-7 Notes: Output Voltage Package 15 :1.5V 18 :1.8V 20 :2.0V 25 :2.5V 28 :2.8V 30 :3.0V 33 :3.3V 35 :3.5V W : SOT25 Package Code Packaging (Note 2) W W SOT25 SOT25 Lead Free L : Lead Free G : Green Packing 7 : Tape & Reel 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 3000/Tape & Reel -7 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. AP139 Rev. 6 1 of 7 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO Pin Descriptions Pin Assignments ( Top View ) V Pin Name VIN GND EN BYP VOUT BYP OUT 5 4 AP139 1 V IN 2 Pin No. 1 2 3 4 5 Description Power Supply Ground Enable Pin Bypass Signal Pin Output 3 GND EN SOT25 Block Diagram VIN VOUT Current Limit 1uA Thermal Shutdown R1 EN - BYP AMP + Vref R2 GND Absolute Maximum Ratings Symbol VIN IOUT VOUT TOP TMJ PD AP139 Rev. 6 Parameter Input Voltage Output Current Output Voltage ESD Classification Operating Junction Temperature Range Maximum Junction Temperature Internal Power Dissipation 2 of 7 www.diodes.com Rating +6 PD/(VIN-VO) GND - 0.3 to VIN+ 0.3 B -40 to +125 150 250 Unit V mA V ºC ºC mW FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO Recommended Operating Conditions Symbol Parameter VIN Input voltage IOUT Output Current TA Operating Ambient Temperature Electrical Characteristics Symbol Parameter VIN Input Voltage IQ Quiescent Current ISTB Standby Current VOUT OTH θJA θJC Notes: 0 300 mA -40 85 °C (TA = +25ºC, unless otherwise noted) Test Conditions -2 - 2 % VOUT Temperature Coefficient - 50 - ppm/ C - - 0.45 V 300 - - mA 300 450 - mA 1.7 150 0.1 0.3 60 50 40 75 55 30 - 300 0.3 1 - mA % % - - 0.8 V - - <0.1 μA - 130 - o C - 20 - o C IO = 0mA VIN = 5.0V, VOUT = 0V, VEN < VEL IO = 1mA to 300mA, VOUT = VO(NOM) - 1.5% VO ≥2.8V VOUT > 1.05V Ishort Short Circuit Current △VLINE Line Regulation △VLOAD Load Regulation OTS V Output Voltage Accuracy IO = 1mA, VIN = 5V Current Limit IEN 5.5 Unit V μA μA ILIMIT VEL 2.7 Max 5.5 60 3.0 Output Current VEH Unit Typ. 45 2.0 IOUT PSRR Max Min Note 3 - VDROPOUT Dropout Voltage PSRR Min Vcc = 5V, Vout < 1.05V IOUT = 1mA, VIN = (VOUT +1V) to 5.5V IO = 1mA to 300mA, VIN = 5V f = 1KHz I = 100mA, Power Supply Rejection O f = 10KHz CO = 2.2μF ceramic f = 100KHz f = 1KHz IO = 100mA, Power Supply Rejection CO = 2.2μF ceramic, f = 10KHz CBYP = 20nF f = 100KHz Output ON EN Input Threshold Output OFF Enable Pin Current Over Temperature Shutdown Over Temperature Hysteresis Thermal Resistance Thermal Resistance SOT25 (Note 4) SOT25 (Note 4) 226 34 o dB dB V ºC/W ºC/W 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. AP139 Rev. 6 3 of 7 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO Typical Application VOUT VIN IN OUT AP139 BYP C1 1uF GND EN C2 10nF C3 1uF Typical Performance Characteristics V c c V s Q u ie s c e n t C u r r e n t 100 90 Quiescent Current (μ A) 80 70 60 50 40 30 20 T A = 25℃ 10 0 3 .5 4 4 .5 5 5 .5 6 V c c (V ) Power Supply Rejection Ratio 0 BP = 10nF -10 -20 -20 -30 -30 PSRR (dB) PSRR (dB) Iout = 100mA -10 -40 -50 BP = 1nF -60 BP = 5nF -40 10mA -50 -60 1mA BP = 10nF -80 -80 BP = 20nF 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 -90 1.0E+00 Frequency (Hz) AP139 Rev. 6 100mA -70 -70 -90 1.0E+00 Power Supply Rejection Ratio 0 4 of 7 www.diodes.com 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Frequency (Hz) FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO Typical Performance Characteristics (Continued) Power Supply Rejection Ratio Vout Vs Current Limit 0 0.7 BP=0 -10 0.6 100mA -20 0.5 -40 Current Limit (A) PSRR (dB) -30 10mA -50 -60 1mA 0.4 0.3 0.2 -70 0.1 -80 -90 1.0E+00 Vcc=5V 0 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.5 1.0E+06 1.8 2 2.5 2.8 3 3.3 3.5 Vout (V) Frequency (Hz) V c c V s S h o rt C u rre n t 400 350 Short Current (mA) 300 250 T o p to b o tto m 200 V o u t= 1 .5 V 150 V o u t= 1 .8 V V o u t= 2 .5 V 100 V o u t= 3 .3 V 50 0 3 .5 4 4 .5 5 5 .5 6 V c c (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 o exceeds 130 C, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is o restored when the junction temperature drops below 110 C. The AP139 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. AP139 Rev. 6 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. 5 of 7 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO Marking Information (1) SOT25 ( Top View ) 4 7 5 XX Y W X 1 2 Part Number AP139-15W AP139-18W AP139-20W AP139-25W AP139-28W AP139-30W AP139-33W AP139-35W Package Information AP139 Rev. 6 3 XX : Identification code Y : Year 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : a~z : Lead Free A~Z : Green Package SOT25 SOT25 SOT25 SOT25 SOT25 SOT25 SOT25 SOT25 Identification Code N0 N1 N2 N3 N4 N5 N6 N7 (All Dimensions in mm) 6 of 7 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP139 300mA LOW-NOISE CMOS LDO IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP139 Rev. 6 7 of 7 www.diodes.com FEBRUARY 2009 © Diodes Incorporated