XB2121-2.5

XB2121-2.5 SOT23-5 General Description Features The XB2121 series are positive voltage regulator ICs fabricated by CMOS process. Each of these ICs consists of a voltage reference, an error amplifier, a resistor network for setting output voltage, a current limit circuit for current protection and a chip-enable circuit (5-pin products only). · · · · · The XB2121 series feature high supply voltage ripple rejection, low dropout voltage, low noise, high output voltage accuracy, and low current consumption which make them ideal for use in various battery-powered devices. · · · · · · Low Dropout Voltage at IOUT=100mA: 150mV Typical (Except 1.2V, 1.3V and 1.5V Versions) Low Standby Current: 0.1μA Typical Low Quiescent Current: 25μA Typical High Ripple Rejection: 70dB Typical （f=1kHz） Output Current: More Than 200mA (300mA Limit) Extremely Low Noise: 30μVrms (10Hz to 100kHz) Excellent Line Regulation: 4mV Typical Excellent Load Regulation: 12mV Typical High Output Voltage Accuracy: ±2% Excellent Line Transient Response and Load Transient Response Compatible with Low ESR Ceramic Capacitor (as Low as 1μF) Applications · · · · · · 1 Mobile Phones, Cordless Phones Wireless Communication Equipment Portable Games Cameras, Video Recorders Sub-board Power Supplies for Telecom Equipment Battery Powered Equipment XB2121-2.5 Pin Configuration K Package (SOT-23-5) V IN 1 5 GND 2 VOUT CE 3 4 NC Figure 1. Pin Configuration of XB2121 (Top View) 2 SOT23-5 XB2121-2.5 Functional Block Diagram VIN 1/A2/A1 5/B2/A2 VOUT VREF CURRENT LIMIT CE 3/A1/B1 2/B1/B2 GND SOT-23-5 Figure 2. Functional Block Diagram of XB2121 3 SOT23-5 XB2121-2.5 SOT23-5 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Input Voltage VIN 6.5 V Enable Input Voltage VCE -0.3 to VIN+0.3 V Output Current IOUT 300 mA TJ 150 o TSTG -65 to 150 oC TLEAD 260 oC Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) Thermal Resistance (Junction to Ambient) (Note 2) θJA SOT-23-5 250 C oC/W ESD (Human Body Model) ESD 2000 V ESD (Machine Model) ESD 200 V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 2: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using: PD(max)=(TJ(max) TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature. Recommended Operating Conditions Parameter Symbol Min Max Unit Input Voltage VIN 2 6 V Operating Ambient Temperature Range TA -40 85 4 o C XB2121-2.5 SOT23-5 Electrical Characteristics (Continued) XB2121 Electrical Characteristics (VIN=3.5V, TJ=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.) Parameter Output Voltage Symbol VOUT Input Voltage VIN Output Current IOUT Conditions VIN=3.5V 1mA≤IOUT≤30mA VIN-VOUT=1V Min Typ Max Unit 2.45 2.5 2.55 V 6 V 200 mA Load Regulation VRLOAD VIN=3.5V 1mA≤IOUT≤80mA 12 40 mV Line Regulation VRLINE 3V≤VIN≤6V IOUT=30mA 4 16 mV Dropout Voltage Quiescent Current VDROP IQ IOUT=10mA 20 40 IOUT=100mA 150 300 IOUT=150mA 200 400 IOUT=200mA 250 500 VIN=3.5V, IOUT=0mA 25 50 μA 1 μA mV Standby Current ISTD VIN=3.5V VCE in OFF mode 0.1 Power Supply Rejection Ratio PSRR Ripple 0.5Vp-p, f=1kHz VIN=3.5V 70 dB ±250 μV/oC ±100 ppm/oC Output Voltage Temperature Coefficient ΔVOUT/ΔT (ΔVOUT/VOUT)/ΔT IOUT=30mA Short Current Limit ILIMIT VOUT=0V 50 mA RMS Output Noise VNOISE TA=25oC 10Hz ≤f≤100kHz 30 μVrms CE "High" Voltage CE input voltage "High" CE "Low" Voltage CE input voltage "Low" CE Pull-down Resistance RPD Thermal Resistance (Junction to Case) θJC 1.5 2.5 SOT-23-5 5 V 5 74 0.25 V 10 MΩ oC/W XB2121-2.5 SOT23-5 Typical Performance Characteristics 2.8 2.4 Output Voltage (V) 2.0 1.6 1.2 0.8 AP2121-2.5 VIN= 2.8V 0.4 VIN= 3.5V 0.0 0 VIN= 5V 50 100 150 200 250 300 350 Output Current (mA) Figure 3. Output Voltage vs. Output Current Note: Filter capacitors are required at the XB2121 input and output. 1 μF capacitor is required at the input. The minimum output capacitance required for stability should be more than 1μF with ESR from 0.01Ω to 100Ω. Ceramic capacitors are recommended. 6 XB2121-2.5 SOT23-5 Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) 2.950(0.116) 2.650(0.104) 2.820(0.111) 3.020(0.119) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.400(0.016) 1.800(0.071) 2.000(0.079) 0.000(0.000) MAX 1.450(0.057) 0.950(0.037) TYP 0.150(0.006) 0.900(0.035) 1.300(0.051) 7 0° 8°