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| AP1121 Dual 1A Low Dropout Positive Regulator Features * * * * * * * General Description AP1121 series are low dropout positive regulator with minimum of 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V/2.5V or 3.3V/1.8V logic supply. AP1121 series are guaranteed to have <1.3V dropout at full load current making it ideal to provide well regulated outputs dual channels with up to 18V input supply. 1.3V maximum dropout at full load current Fast transient response Output current limiting for each channel. Built-in thermal shutdown each channel. Good noise rejection Dual output ch1=3.3V, ch2=2.5V (1.8V for B version) Pb-Free Packages: SOP-8L Applications * * PC peripheral Communication Connection Diagram (Top View) VOUT1 1 VIN 2 VIN 3 VOUT2 4 AP1121 8 7 6 5 GND GND GND GND Pin Descriptions NAME GND 3.3V(VOUT1) 2.5V/1.8V (VOUT2) VIN Ground The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground. FUNCTION Ordering Information AP 1121 X X Vout A : CH1=3.3V CH2=2.5V B : CH1=3.3V CH2=1.8V X Packing Blank : Tube A : Taping Package S : SOP-8L This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev. 0.0 Mar. 4, 2004 1/5 AP1121 Dual 1A Low Dropout Positive Regulator Typical Circuit 3.3V/1A C1 100uF 5V C2 100uF 2.5V/1A C3 100uF VOUT1 GND VIN VIN GND GND VOUT2 GND (3.3V/2.5V Dual output ) Absolute Maximum Ratings Symbol VIN PD TST TOP DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Parameter Rating -0.3 to 18 V Internally Limited -65 to +150 0 to +150 o o Unit V C C Block Diagram 2 VIN + + 1.25V CURRENT LIMIT + Thermal Shutdown 3 VIN + + 1.25V CURRENT LIMIT + Thermal Shutdown 7/8 GND 1 VOUT1 + 5/6 GND 4 VOUT2 + Anachip Corp. www.anachip.com.tw 2/5 Rev. 0.0 Mar. 4, 2004 AP1121 Dual 1A Low Dropout Positive Regulator Electrical Characteristics (Under Operating Conditions) PARAMETER CONDITIONS IOUT = 10mA, TJ = 25oC, AP1121_ - VOUT1 4.8VVIN12V IOUT = 10mA, TJ = 25oC, AP1121A - VOUT2 4VVIN12V IOUT = 10mA, TJ = 25oC, AP1121B - VOUT2 4VVIN12V IO=10mA,VOUT+1.5V Output Voltage Line Regulation Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation Ripple Rejection Temperature Stability JA Thermal Resistance Junction-to-Ambient (No heat sink; No air flow) (VIN-VOUT) = 5V 0oCTj125oC (Note 3) TA=25 oC, 30ms pulse F=120Hz,COUT=25uF Tantalum, IOUT=1A IO=10mA SOP8: Control Circuitry/Power Transistor (Note4) CH1 or CH2 only CH1 & CH2 and PD1=PD2 SOP8: Control Circuitry/Power Transistor JC Thermal Resistance (Note 4) CH1 or CH2 only Junction-to-Case CH1 & CH2 and PD1=PD2 C/W 20 12 O C/W Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18" from the package. Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the input/output differentially and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. Note3: Quiescent current is defined as the minimum output current that requires maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. Note4: Vout1 and Vout2 are connected to the PCB cupper area 5.5mm*5.5mm separately. If you need large PD or lower Tc & Tj, please connect to the large cupper area >> 5.5mm*5.5mm (like 10mm*10mm). Anachip Corp. www.anachip.com.tw 3/6 Rev. 0.0 Mar. 4, 2004 AP1121 Dual 1A Low Dropout Positive Regulator Typical Performance Characteristics 2. 0 1. 8 0.20 Output Voltage Deviation (%) 1. 6 0 I load=800mA Dropout Voltage (V) 1. 4 1. 2 1. 0 0. 8 0. 6 0. 4 0. 2 0 0 Tj = 125 oC Tj = 25 oC -0.20 -0.40 -0.80 Dropout Voltage vs Output Current 2 1.5 1 Output Current (mA) 200 400 600 800 -1 -25 0 Load Regulation vs Temperature Temperature (oC) 25 50 75 100 125 Output Voltage Change (%) 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 75 100 125 150 0.8 Output Voltage Deviation (%) 0.6 0.4 0.2 0 Percent Change in Output Voltage vs Temperature Output Voltage Deviation (mV) Input Voltage (V) Load Current (A) Output Voltage Deviation (mV) 7.5 6.5 5.5 40 20 0 -20 -40 Cin=1uF Cout=10uF Tantalum 30 20 10 0 -10 -20 2 1 0 -1 0 10 20 Temperature (oC) 2 4 Line Regulation C in = 1uF C out = 10 uF Tantalum Preload = 100mA Input Voltage (V) 6 8 10 12 0 20 40 60 TIME (us) 80 100 120 140 160 180 200 30 Line Transient Response Anachip Corp. www.anachip.com.tw 4/5 Load Transient Response Rev. 0.0 Mar. 4, 2004 TIME (us) 40 50 60 70 80 90 100 AP1121 Dual 1A Low Dropout Positive Regulator Marking Information ( Top View ) 8 5 Logo AC AP1121 X YY WW X A : 3.3V/2.5V version B : 3.3V/1.8V version 1 4 ID code: internal Xth week: 01~52 Year: "01" =2001 "02" =2002 ~ SOP-8L Package Information E H L VIEW "A" D 7 (4X) A2 A 0.015x45 7 (4X) A1 e B y C VIEW "A" Symbol A A1 A2 B C D E e H L y Anachip Corp. www.anachip.com.tw Dimensions In Millimeters Min. Nom. Max. 1.40 1.60 1.75 0.10 0.25 1.30 1.45 1.50 0.33 0.41 0.51 0.19 0.20 0.25 4.80 5.05 5.30 3.70 3.90 4.10 1.27 5.79 5.99 6.20 0.38 0.71 1.27 0.10 O O 8 0 Dimensions In Inches Min. Nom. Max. 0.055 0.063 0.069 0.040 0.100 0.051 0.057 0.059 0.013 0.016 0.020 0.0075 0.008 0.010 0.189 0.199 0.209 0.146 0.154 0.161 0.050 0.228 0.236 0.244 0.015 0.028 0.050 0.004 O O 0 8 Rev. 0.0 Mar. 4, 2004 5/5 |
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