IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR DESCRIPTION The IP1524 is a dual output voltage LDO regulator which can provide up to 500mA of output current. The IP1524 consists of 1-fixed 3.3V and 1-adjustable regulators. 14SOPH-8L FEATURES ORDERING INFORMATION - 1-Fixed 3.3V LDO regulator with internal NPN TR. - 1-Adjustable LDO regulator with internal NPN TR. - Built-in TSD circuit. - Built-in current limit circuit. - Built-in over voltage protection circuit. - Output trimmed to +/-3% Tolerance Device Package Operating Temp IP1524 14SOPH-8L -35 OC ~ +85 OC BLOCK DIAGRAM VIN 1 Vref ON/OFF 2 PGND VOUT1 3 ADJ2 4 VOUT2 5 On/off control SW N/C Shutdown 6 PGND OCL N/C OVP TSD 7 December. 2002 (Rev.0) www.interpionsemi.com -1- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR PIN CONNECTIONS PGND PGND IP1524 1 2 VIN 3 4 5 ON/OFF VOUT1 ADJ2 VOUT2 6 7 N/C N/C PIN DESCRIPTIONS NO SYMBOL I/O 1 VIN I Input Supply Voltage 2 ON/OFF I ON/OFF control 3 VOUT1 O Regulator 1 Output (3.3V fixed) 4 ADJ2 I Regulator 2 Adjustable Pin 5 VOUT2 O Regulator 2 Output (Adjustable) 6 N/C - No Connection 7 N/C I No Connection 8 PGND - Power Ground December. 2002 (Rev.0) DESCRIPTION www.interpionsemi.com -2- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ABSOLUTE MAXIMUM RATINGS(TA=25OC) CHARACTERISTICS SYMBOL VALUE UNIT Maximum supply voltage Vccmax 10 V Input voltage Vinmax 10 V Power dissipation Pd 3.0* W Operating temperature Topr -35 ~ +85 O Storage temperature Tstr -55 ~ +150 O C C Note> 1. When mounted on 100mm X 100mm X 1mm PCB (Phenolic resin material). 2. Power dissipation reduces 24mW/OC for using above Ta=25O C 3. Do not exceed Pd and SOA. POWER DISSIPATION CURVE Power Dissipation (W) 4 3 2 SOA 1 0 25 50 75 100 125 150 175 Ambient Temperature (°C) RECOMMENDED OPERATING CONDITIONS CHARACTERISTICS SYMBOL VALUE UNIT Input voltage VIN 4.5 ~ 6.0 V December. 2002 (Rev.0) www.interpionsemi.com -3- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS ( Vin= 5V, Co=10uF, Ta = 25O C, unless otherwise specified.) Characteristics Quiescent current Symbol Min. Typ. Max. Units - 7 12 mA 6.5 - - V 1.212 1.25 1.288 V 3.2 3.3 3.4 V Vin=4.5~6V, Io=10mA - 0.01 0.2 % Ta=25 OC Vin=5V, 10mA < Io < 500mA - 0.4 0.8 % Io=500mA - 1.1 1.3 V F=120Hz, Co=10uF Tantalum Vin-Vout=2V, Io=250mA 60 70 - dB Ilimit1 - 500 - - mA Temp1 - - 0.5 - % Vref - Vin1.5V V Icc Condition Vcc=5V, No-Load OVP Dectecting Voltage Vovp Vcc=Variable Reference voltage Vref - LDO REGULATOR 1 (3.3V FIXED TYPE) Output Voltage Vout1 Line Regulation dVline1 Load Regulation dVload 1 Dropout voltage Vdrop1 Ripple rejection RR1 Current limit *Note Temperature stability Io=10mA LDO REGULATOR 2 (ADJUSTABLE TYPE) Output Voltage Vout2 Line Regulation dVline2 Vin=4.5~6V, Io=10mA - 0.01 0.2 % Load Regulation dVload2 Ta=25 OC Vin=5V, 10mA < Io < 400mA - 0.4 0.8 % Dropout voltage Vdrop2 Io=400mA - 1.1 1.3 V Ripple rejection RR2 F=120Hz, Co=10uF Tantalum Vin-Vout=2V, Io=200mA 60 70 - dB Ilimit2 - 500 - - mA Adjust pin current Iadj 2 - - 0.1 - uA Minimum load current Ilmin2 - 10 - - mA Temperature stability Temp2 - - 0.5 - % Current limit *Note Io=10mA ON/OFF CONTROL PART On voltage Von Vout=Enabled - - 0.8 V Off voltage Voff Vout=Disabled 2.0 - - V *Note Don’t exceed following current limit December. 2002 (Rev.0) www.interpionsemi.com -4- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR APPLICATION SUMMARY - ON / OFF When you want to control output of the IP1524, use pin #2 as follows Main bias Q1 Pin#2 Vth December. 2002 (Rev.0) As shown in figure Pin#2 is positive input of the comparator, and the other Input is threshold voltage. If the voltage of the pin#2 rises above threshold voltage, then TR Q1 will be saturated and the main bias current will be shut down. www.interpionsemi.com -5- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR TYPICAL APPLICATION CIRCUIT PGND PGND IP1524 VIN ON/OFF VOUT1 ADJ2 1 2 3 4 VOUT2 5 N/C N/C 6 7 Radj1 10uF Radj2 Vinput 10uF ON/OFF Vout1 Vout2 *CALCULATION OF OUTPUT VOLTAGE VOUT2 = VREF ( 1 + (Radj1 / Radj2) ) =1.25V ( 1 + (Radj1 / Radj2) ) December. 2002 (Rev.0) www.interpionsemi.com -6- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR INTERNAL CIRCUIT Pin no Pin name Internal circuit 2 2 ON/OFF Regulator Output1,2 3,4,5 Vref 4 3 Regulator Adjustable pin December. 2002 (Rev.0) www.interpionsemi.com 5 -7- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES QUIESCENT CURRENT 10 Icc (mA) 8 Vo2=1.25V Ro2=1K 6 4 2 0 0 2 4 6 8 10 Vcc (V) VREF TEMPERTURE STABILITY 1.270 1.265 1.260 VREF (V) 1.255 1.250 1.245 1.240 1.235 1.230 -50 0 50 100 150 O TEMP ( C) December. 2002 (Rev.0) www.interpionsemi.com -8- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) o VOUT1 Load Regulation (Tj=25 C) 3.40 Output Voltage (V) 3.35 3.30 3.25 3.20 0 200 400 600 800 1000 Output Current (mA) o VOUT2 Load Regulation (Tj=25 C) 1.35 Output Voltage (V) 1.30 Vo2=1.25V 1.25 1.20 1.15 1.10 0 200 400 600 800 1000 Output Current (mA) December. 2002 (Rev.0) www.interpionsemi.com -9- IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) VOUT1 Load Transient Response Output Voltage Deviation (mV) 200 100 Io=50mA 0 Io=500mA -100 -200 -300 0 20 40 60 80 Time (usec) VOUT2 Load Transient Response Output Voltage Deviation (mV) 200 Vout2=1.25V 100 Io=50mA 0 Io=400mA -100 -200 0 20 40 60 80 Time (usec) December. 2002 (Rev.0) www.interpionsemi.com - 10 - IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) Dropout Voltage 1.4 Dropout Voltage (V) 1.2 1.0 0.8 0.6 0 200 400 600 800 Output Current (mA) December. 2002 (Rev.0) www.interpionsemi.com - 11 - IP1524 DUAL OUTPUT VOLTAGE LDO REGULATOR PACKAGE DIMENSION 14SOPH-8L MIN0.05 0.47 (0.061 0.004) (0.019) (MIN0.002) 1.55 0.10 (0.008,+0.004,-0.002) (0.050TYP) +0.10 -0.05 0.406 1.27TYP 8.56 0.20 (0.347 0.008) 2.946 8.70MAX (0.343MAX) 4.216 #1 6.00 0.30 1.80MAX (0.008,+0.004,-0.002) 0.20 +0.10 -0.05 (0.236 0.012) 3.95 0.2 (0.156 0.008) 5.72 0.60 0.20 (0.071MAX) 0~8 (0.225) (0.024 0.008) December. 2002 (Rev.0) www.interpionsemi.com - 12 -