IP1531 INTERPION | Alldatasheet

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Technical content

  • 1 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR The IP1531 is a triple output voltage LDO regulator which can provide up to 500mA of output current. The IP1531 consists of 1-fixed 3.3V and 2-adjustable regulators. - 1-Fixed 3.3V LDO regulator with internal NPN TR. - 2-Adjustable LDO regulators with internal NPN TR. - Built-in TSD circuit. - Built-in current limit circuit. - Built-in over voltage protection circuit. - Output trimmed to +/-3% Tolerance

DESCRIPTION

FEATURES

-35OC ~ +85 OC

ORDERING INFORMATION

  • 2 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR PIN DESCRIPTIONS NO SYMBOL I/O

I Input Supply Voltage ON/OFF I ON/OFF control VOUT1 O Regulator 1 Output (3.3V fixed) ADJ2 I Regulator 2 Adjustable Pin VOUT2 O Regulator 2 Output (Adjustable) VOUT3 O Regulator 3 Output (Adjustable) ADJ3 I Regulator 3 Adjustable Pin PGND Power Ground PIN CONNECTIONS VOUT1 VIN ON/OFF VOUT2 PGND ADJ2 VOUT3 PGND ADJ3 IP1531

  • 3 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR CHARACTERISTICS SYMBOL VALUE UNIT Maximum supply voltage Vccmax V Input voltage Vinmax V Power dissipation Pd 3.0* W Operating temperature Topr -35 ~ +85 OC Storage temperature Tstr -55 ~ +150 OC Note> 1. When mounted on 100mm X 100mm X 1mm PCB (Phenolic resin material). 2. Power dissipation reduces 24mW/OC for using above Ta=25OC 3. Do not exceed Pd and SOA. POWER DISSIPATION CURVE Power Dissipation (W) Ambient Temperature (°C) 25 50 75 100 125 150 175 RECOMMENDED OPERATING CONDITIONS CHARACTERISTICS SYMBOL VALUE UNIT Input voltage VIN 4.5 ~ 6.0 V SOA ABSOLUTE MAXIMUM RATINGS(TA=25OC)
  • 4 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR

ELECTRICAL CHARACTERISTICS

Min. Typ. Max. Units Quiescent current Icc Vcc=5V, No-Load mA OVP Detecting Voltage Vovp Vcc=Variable 6.5 V LDO REGULATOR 1 (3.3V FIXED TYPE) Output Voltage Vout1 Io=10mA 3.2 3.3 3.4 V Line Regulation dVline1 Vin=4.5~6V, Io=10mA 0.01 0.2 Load Regulation dVload 1 Ta=25OC Vin=5V, 10mA < Io < 500mA 0.4 0.8 Dropout voltage Vdrop1 Io=500mA 1.1 1.3 V Ripple rejection RR1 F=120Hz, Co=10uF Tantalum Vin-Vout=2V, Io=250mA dB Current limit *Note Ilimit1 500 mA Temperature stability Temp1 0.5 LDO REGULATOR 2 (ADJUSTABLE TYPE) Output Voltage Vout2 Io=10mA Vref Vin- 1.5V V Line Regulation dVline2 Vin=4.5~6V, Io=10mA 0.01 0.4 Load Regulation dVload2 Ta=25OC 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 dB Current limit *Note Ilimit2 Vin-Vout=3.0V 400 mA Temperature stability Temp2 0.5 Reference voltage Vref 1.212 1.25 1.288 V Adjust pin current Iadj 2 0.1 uA Minimum load current Ilmin2 mA ( Vin= 5V, Co=10uF, Ta = 25OC, unless otherwise specified.)

  • 5 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR

( Vin= 5V, Co=10uF, Ta = 25OC, unless otherwise specified.) Parameter Symbol Condition Min. Typ. Max. Units LDO REGULATOR 3 (ADJUSTABLE TYPE) Output Voltage Vout3 Io=10mA Vref Vin- 1.5V V Line Regulation dVline3 Vin=4.5~6V,Io=10mA 0.01 0.4 Load Regulation dVload3 Ta=25OC Vin=5V, 10mA < Io < 400mA 0.4 0.8 Dropout voltage Vdrop3 Io=400mA 1.1 1.3 V Ripple rejection RR3 F=120Hz, Co=10uF Tantalum Vin-Vout=2V, Io=200mA dB Current limit *Note Ilimit3 Vin-Vout=3.0V 400 mA Adjust pin current Iadj 3 0.1 uA Minimum load current Ilmin3 mA Temperature stability Temp3 0.5 On voltage Von Vout=Enabled 0.8 V Off voltage Voff Vout=Disabled 2.0 V ON/OFF CONTROL PART * Note Don’ t exceed following current limit. ( Iout1 : 500 mA, Iout2 : 400 mA, Iout3 : 400 mA )

  • 6 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR APPLICATION SUMMARY - ON / OFF When you want to control output of the IP1531, use pin #2 as follows 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. Pin#2 Vth Main bias
  • 7 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR TYPICAL APPLICATION CIRCUIT Vinput Vout1 10uF VOUT1 VIN ON/OFF VOUT2 PGND ADJ2 VOUT3 PGND ADJ3 IP1531 Vout2 Vout3 10uF 10uF H L Radj1 Radj2 Radj3 Radj4 *CALCULATION OF OUTPUT VOLTAGE VOUT2 = VREF ( 1 + (Radj1 / Radj2) ) =1.25V ( 1 + (Radj1 / Radj2) ) VOUT3 = VREF ( 1 + (Radj3 / Radj4) ) =1.25V ( 1 + (Radj3 / Radj4) )
  • 8 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR Pin no Pin name Internal circuit ON/OFF 3,5,6 4,7 Regulator Output1,2,3 Regulator Adjustable pin INTERNAL CIRCUIT Vref
  • 9 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES Vo2=Vo3=1.25V Ro2=Ro3=1K QUIESCENT CURRENT Icc (mA) Vcc (V) -50 100 150 1.230 1.235 1.240 1.245 1.250 1.255 1.260 1.265 1.270 VREF TEMPERTURE STABILITY VREF (V) TEMP ( OC)
  • 10 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) 200 400 600 800 1000 3.20 3.25 3.30 3.35 3.40 VOUT1 Load Regulation (Tj=25 oC) Output Voltage (V) Output Current (mA) 200 400 600 800 1000 1.10 1.15 1.20 1.25 1.30 1.35 Vo2=Vo3=1.25V VOUT2,3 Load Regulation (Tj=25 oC) Output Voltage (V) Output Current (mA)
  • 11 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) -300 -200 -100 100 200 Io=50mA Io=500mA VOUT1 Load Transient Response Output Voltage Deviation (mV) Time (usec) -200 -100 100 200 Vout2=Vout3=1.25V Io=50mA Io=400mA VOUT2,3 Load Transient Response Output Voltage Deviation (mV) Time (usec)
  • 12 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR ELECTRICAL CHARACTERISTICS CURVES (Continued) 200 400 600 800 0.6 0.8 1.0 1.2 1.4 Dropout Voltage Dropout Voltage (V) Output Current (mA)
  • 13 - December. 2002 (Rev.0) www.interpionsemi.com IP1531 TRIPLE OUTPUT VOLTAGE LDO REGULATOR PACKAGE DIMENSION 14SOPH-8L 6.00 0.30 (0.236 0.012) 3.95 0.2 (0.156 0.008) 5.72 (0.225) 0.60 0.20 (0.024 0.008) 0.20 +0.10 -0.05 (0.008,+0.004,- 0.002) 0~8 0.47 (0.019 0.40 +0.1 -0.05 (0.008,+0.004,- 0.002) 1.27TYP (0.050TYP) 1.80MAX (0.071MAX) MIN0.05 (MIN0.002) 1.55 0.10 (0.061 0.004) 2.946 4.216 8.56 0.20 (0.347 0.008) 8.70MAX (0.343MAX)