LR1108-33-AB3-A-R

UNISONIC TECHNOLOGIES CO., LTD LR1108 1A FAST ULTRA LOW DROPOUT LINEAR REGULATOR DESCRIPTION The UTC LR1108 operate from a +2.5V ~ +7.0V input supply as fast ultra low-dropout linear regulators. Wide output voltage range options are available. The fast response characteristic to make UTC LR1108 suitable for low voltage microprocessor application. The low quiescent current operation and low dropout quality caused by the CMOS process. The UTC LR1108 has ultra low dropout voltage; 300mV at 600mA load current typically. The ground pin current is typically 200uA at 1mA load current. ERROR Flag: When the output voltage drops 10% below nominal value Error flag goes low. Output Voltage Precision: Multiple output voltage options are available and ranging from 1.2V ~ 5.0V at room temperature with a guaranteed accuracy of ±1.5%, and ±3.0% when varying line, load and temperature. 3 2 1 CMOS IC SOT-89 1 5 4 SOT-25 *Pb-free plating product number: LR1108L FEATURES * Ultra low dropout voltage * Low ground pin current * 0.04% load regulation * The guaranteed output current is 1A DC * Output voltage accuracy ± 1.5% * ERROR flag indicates output status * Low output capacitor required * Overtemperature protection and overcurrent protection ORDERING INFORMATION Ordering Number Normal Lead Free Plating LR1108-xx-AB3-A-R LR1108L-xx-AB3-A-R LR1108-xx-AB3-C-R LR1108L-xx-AB3-C-R LR1108-xx-AF5-R LR1108L-xx-AF5-R Package SOT-89 SOT-89 SOT-25 1 G G I Pin Assignment 2 3 4 O I I O G SD ERROR 5 O Packing Tape Reel Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2007 Unisonic Technologies Co., Ltd 1 of 6 QW-R102-031.B LR1108 MARKING INFORMATION PACKAGE VOLTAGE CODE PIN CODE A SOT-89 15 :1.5V 18:1.8V 25:2.5V 2J:2.85V 33:3.3V SOT-25 C GND VIN VOUT 3 2 1 CMOS IC PIN 1 GND PIN 2 VOUT PIN 3 VIN PIN 4 - PIN 5 - MARKING - VIN GND SD ERROR VOUT SPXX Lead Plating 4 5 PIN DESCRIPTION Pin Description for SOT-89 Package PIN CODE & NO. PIN NAME I/O DESCRIPTION A C 2 3 VOUT O Output Voltage 1 1 GND Ground 3 2 VIN Input Supply Pin Description for SOT-25 Package PIN NO. PIN NAME I/O DESCRIPTION 1 VIN Input supply 2 GND Ground Shutdown LR1108 enable; when the SD pin connects to GND will shutdown the 3 SD I LR1108; At normal operation, SD must be tied to VDD through a 10KΩ pull up resistor. Error flag, active low; when the output dropout of regulation due to low input O 4 voltage, the LR1108 produces a logic low signal at the ERROR pin. ERROR 5 VOUT O Output voltage UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R102-031.B LR1108 BLOCK DIAGRAM VIN CMOS IC SD VOUT ERROR GND UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 6 QW-R102-031.B LR1108 ABSOLUTE MAXIMUM RATINGS CMOS IC PARAMETER SYMBOL RATINGS UNIT Input Voltage (Operating), (Note 10) 2.5~7.0 V VIN Input Voltage (Survival) -0.3~+7.5 V Shutdown Input Voltage VIN(SHDN) -0.3~VIN+0.3 V Output Voltage (Survival), (Note 4), (Note 5) VOUT -0.3~+7.5 V IOUT (Survival) Short Circuit Protected Maximum Voltage for ERROR Pin VIN+0.3 V Maximum Operating Current (DC) 1 A Power Dissipation (Note 2) PD Internally Limited Junction Temperature TJ +125 ℃ Operating Temperature TOPR -40~+125 ℃ Storage Temperature TSTG -65~+150 ℃ Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range. (TJ = 25℃, VIN = VO(NOM) + 1V, IL = 10 mA, COUT = 2.2µF, VSD = VIN-0.3V, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT 0 mA ≤ IL ≤ 1A -1.5 +1.5 Output Voltage Tolerance (Note 6) VOUT 0 % -3 +3 VOUT +1 ≤ VIN≤ 7.0V Output Voltage Line Regulation (Note 6) △VOUT VOUT+1V