PAM3103AABADJ

NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 300mA ADJUSTABLE HIGH PSRR CMOS LINEAR REGULATOR Description Pin Assignments The PAM3103 is a positive, adjustable linear regulator. It features low quiescent current (65µA typ.) and low dropout voltage, making it ideal for battery powered applications. The output voltage is adjustable from 1.2V through 5V. Its high PSRR makes it useful in applications that require AC noise suppression on the input power supply. Spacesaving SOT23-5 and SOT353(SC70-5) packages are attractive for portable and handheld applications. It has both thermal shutdown and a current limit features to prevent device failure under extreme operating conditions. It is stable with an output capacitor of 2.2µF or greater. Features  Low Dropout Voltage: 180mV@ 300mA ( VO = 3.3V)             Accuracy within ±2% Quiescent Current: 65µA Typ. High PSRR: 67dB@100Hz Excellent Line/Load Regulation Fast Response Current Limiting Short Circuit Protection Low Temperature Coefficient Shutdown Current: 0.5µA Thermal Shutdown Space Saving Packages SOT23-5 and SOT353(SC70-5) Pb-Free Package Applications  Cordless Phone       Cellular Phone Bluetooth Earphone Digital Camera Portable Electronics WLAN MP3 Player Typical Applications Circuit VO = VREF*(R1+R2)/R2 PAM3103 Document number: DS36410 Rev. 2 - 3 1 of 11 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 Pin Descriptions Pin Number 1 2 3 4 5 Pin Name VIN GND EN ADJ VOUT Function Input Ground Chip Enable (Active High) Adjustable Pin Output Functional Block Diagram Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Inout Voltage Output Current Output Pin Voltage Lead Soldering Temperature Storage Temperature PAM3103 Document number: DS36410 Rev. 2 - 3 Rating 6.0 300 Unit V mA GND -0.3 to VIN +0.3V V 300 -65 to +150 °C °C 2 of 11 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Parameter Rating Unit Supply Voltage Range 2.5 to 5.5 V Junction Temperature -40 to +125 Operation Temperature -40 to +85 °C Thermal Information Parameter Symbol Package θJC Thermal Resistance Junction to Case) θJA Thermal Resistance (Junction to Ambient) Internal Power Dissipation PD Max SOT23-5 130 SOT353(SC70-5) TBD SOT23-5 250 SOT353(SC70-5) 300 SOT23-5 400 SOT353(SC70-5) 300 Unit °C/W mW Electrical Characteristics (@TA = +25°C, VIN = 4V, VO = 3V, CIN = 1µF, CO = 2.2µF, unless otherwise specified.) Parameter Symbol Test Conditions Min Typ Max Units Input Voltage VIN — Note 1 — 5.5 V Output Voltage VO — 1.2 — 5 V VREF — — 1.235 — V -2 — 2 % 300 — Note 2 mA — 150 — mA 2.5V ≤ VO < 3.3V — 370 450 VO ≥ 3.3V — 180 230 IO = 1mA to 300mA — 70 90 IO = 0mA — 65 90 µA -0.4 0.2 0.4 %/V Reference Voltage Output Voltage Accuracy VO IO = 1mA Output Current IO — Short Circuit Current ISC VO = 0V Dropout Voltage VDROP Ground Current IGND Quiescent Current IQ IO = 300mA mV µA Line Regulation LNR IO = 1mA, VIN = 3V to 5V Load Regulation LDR IO = 1mA to 300mA -1 0.2 1 % — — 40 — ppm/°C — 150 — °C — 30 — °C — — — 67 65 42 — — — dB dB dB Temperature Coefficient TC Over Temperature Shutdown OTS IO = 1mA Over Temperature Hysteresis OTH IO = 1mA Power Supply Ripple Rejection PSRR IO = 100mA, VO = 1.2V f = 100Hz f = 1kHz f = 10kHz Output Noise VN f = 10Hz to 100kHz — 50 — µVRMS EN Input High Threshold VIH VIN 2.5V to 5V 1.5 — — V EN Input Low Threshold VIL VIN 2.5V to 5V — — 0.3 V Shutdown Current ISD VEN = 0V — 0.01 1 µA Notes: 1. The minimum input voltage (VIN(MIN) of the PAM3103 is determined by output voltage and dropout voltage. The minimum input voltage is defined as: VIN(MIN) = VO +VDROP VIN(MIN) = 2.5V 2. Output current is limited by PD, maximum IO = PD/(VIN(MAX) – VO). PAM3103 Document number: DS36410 Rev. 2 - 3 3 of 11 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 Typical Performance Characteristics (@TA = +25°C, VO = 1.2V, CIN = 1µF, CO = 2.2µF, unless otherwise specified.) PAM3103 Document number: DS36410 Rev. 2 - 3 4 of 11 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 Typical Performance Characteristics (cont.) PAM3103 Document number: DS36410 Rev. 2 - 3 5 of 11 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN USE AP2127N/K/AP2125KS PAM3103 Application Information Capacitor Selection and Regulator Stability Similar to any low dropout regulator, the external capacitors used with the PAM3103 must be carefully selected for regulator stability and performance. A capacitor CIN of more than 1μF can be employed in the input pin, while there is no upper limit for the capacitance of CIN. Please note that the distance between CIN and the input pin of the PAM3103 should not exceed 0.5 inch. Ceramic capacitors are suitable for the PAM3103. Capacitors with larger values and lower ESR (equivalent series resistance) provide better PSRR and line-transient response. The PAM3103 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 > 2.2µF with ESR>5mΩ ensures stabilty. ADJ Output Voltage Programming The output voltage of the PAM3103 adjustable regulator is programed by using an external resistor divider as shown in Figure1. The output voltage is calculated as below: VO  VREF 1  R1/ R2 Resistor R1 and R2 should be chosen for approximately 7µA divider current. Lower value resistors can be used but offer no advantage and waste more power. Higher value should be avoided as leakage current at ADJ pin increase the output voltage error. CC is unnecessary when R1 or R2