XB1117 Series ETR0315_003 1A Low Dropout Positive Voltage Regulator ■GENERAL DESCRIPTION The XB1117 series are 1A low dropout positive voltage regulators. Output voltage of the XB1117P series is fixed to 1.8V, 2.5V, 3.3V, and 5.0V. The XB1117K series’ output voltage is adjustable by the external resistors. Please refer to the absolute maximum ratings for the difference between the rated input voltage of the XB1117P50 (VOUT=5.0V) and XB1117P18, 25, 31, K12B. With the dropout voltage 1.2V (TYP.), output current can be generated up to 1A. The built-in overcurrent circuit and thermal protection circuit start to operate when either one of output put current reaches the current limit level or junction temperature reaches the temperature limit. The XB1117 series provide stable line and load regulation by using an input capacitor and an output capacitor (10μF, tantalum). Package is available in SOT-223. ■APPLICATIONS ■FEATURES ●Highly efficient linear regulators Adjustable or Fixed Voltages : 1.8V, 2.5V, 3.3V, 5.0V, ADJ ●5V ~ 3.3V DC / DC converter Low Dropout Voltage : 1.2V @ IOUT=1A Line Regulation (TYP.) : 0.04% (ADJ) Load Regulation (TYP.) : 0.1% (ADJ) Adjust Pin Current : Less than 120μA (ADJ) ●Battery charger ●Local power supply inside equipment ●Battery powered equipment Over-current protection circuit built-in Thermal protection circuit built-in Bi-polar transistors LDO ■TYPICAL APPLICATION CIRCUIT Output Voltage Accuracy : ±1% Output Current : Up to 1A Package : SOT-223 ■ TYPICAL PERFORMANCE CHARACTERISTICS ●Reference Voltage vs. Ambient Temperature 1/13 XB1117 Series ■PIN CONFIGURATION SOT-223 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER 1 2 3 PIN NAME ADJ/GND VOUT VIN FUNCTIONS ADJ/Ground Output Input The electrical potential of the package fin is the same as the VOUT pin. ■PRODUCT CLASSIFICATION ●Ordering Information XB1117①②③④⑤⑥ DESIGNATOR DESCRIPTION ① Type of Regulators ②③④ 2/13 Output Voltage & Accuracy ⑤ Package ⑥ Device Orientation SYMBOL DESCRIPTION P : Fixed VOUT type K : Adjustable VOUT type 181 : Fixed VOUT 1.80V (±1%) 251 : Fixed VOUT 2.50V (±1%) 331 : Fixed VOUT 3.30V (±1%) 501 : Fixed VOUT 5.00V (±1%) 12B : Adjustable VOUT 1.25V (±1%) F : SOT-223 R : Embossed tape, standard feed L : Embossed tape, reverse feed XB1117 Series ■BLOCK DIAGRAM 3/13 XB1117 Series ■ABSOLUTE MAXIMUM RATINGS XB1117P501 PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (ΔT=100℃) Operating Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature SYMBOL VIN RATINGS 10.0 UNITS V θJC 15 θJA 160 PD 625 mW Topr Tj Tstg Tlead 0 ~＋70 0 ~＋125 - 65 ~＋150 260 ℃ ℃/W *Stress above the listed absolute maximum rating may cause permanent damage to the device. ** The rated values of the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type are different from that of the XB1117P50 (VOUT=5.0V). ■ELECTRICAL CHARACTERISTICS XB1117P501 Ta=25℃ PARAMETER SYMBOL Output Voltage VOUT Line Regulation ΔVOUT1 Load Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Ilim Supply Current ISS Temperature Coefficient TC Temperature Stability TS CONDITIONS VIN=7.0V IOUT=0A 7.0V≦VIN≦9.0V IOUT=0A VIN=7.0V 0A≦IOUT≦1.0A ΔVOUT=±1％ 0A≦IOUT≦1.0A 7.0V≦VIN≦10.0V VIN=7.0V 0A≦IOUT≦1.0A 7.0V≦VIN≦10.0V 0A≦IOUT≦1.0A VIN=7.0V IOUT=100mA *Over Temp. = Over Temperature（0～＋70℃） 4/13 MIN. TYP. MAX. UNITS *Over Temp. 4.950 4.900 5.000 5.000 5.050 5.100 V *Over Temp. - 1 6 *Over Temp. *Over Temp. 1.0 5.0 10.1 1.2 1.3 1.5 15.2 20.2 1.4 - *Over Temp. - 6 13 mA - 50 - ppm/℃ - 0.5 - ％ *Over Temp. *Over Temp. mV V A XB1117 Series ■ABSOLUTE MAXIMUM RATINGS XB1117P181, P251, P331, K12B PARAMETER Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (ΔT=100℃) SYMBOL VIN RATINGS 7.0 θJC 15 θJA 160 PD TOPR TJ TSTG TLEAD 625 0 ~ 70 0 ~ 125 -65 ~ 150 260 Operating Temperature Range Operating Temperature Range Storage Temperature Range Lead Temperature UNITS V ℃/W mW ℃ *Stress above the listed absolute maximum rating may cause permanent damage to the device. ■ELECTRICAL CHARACTERISTICS XB1117P181 TJ=25℃ PARAMETER SYMBOL Output Voltage VOUT Line Regulation ΔVOUT1 Load Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Ilim Supply Current ISS Temperature Coefficient TC Temperature Stability TS CONDITIONS VIN=5.0V IOUT=0A MIN. TYP. MAX. UNITS 1.782 1.800 1.818 V - 1.0 5.5 mV *Over Temp. *Over Temp. 1.0 1.80 3.70 1.2 1.3 1.5 18.2 22.0 1.4 - *Over Temp. - 6 13 mA 50 - ppm/ ℃ 0.5 - ％ *Over Temp. 4.75V≦VIN≦7.0V IOUT = 0A VIN=5.0V 0A≦IOUT≦1.0A ΔVOUT=±1％ 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V VIN=5.0V 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V 0A≦IOUT≦1.0A VIN=5.0V IOUT=100mA *Over Temp. *Over Temp. - mV V A *Over Temp. = Over Temperature (0～＋70℃) XB1117P251 TJ =25℃ PARAMETER SYMBOL Output Voltage VOUT Line Regulation ΔVOUT1 Load Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Ilim Supply Current ISS Temperature Coefficient TC Temperature Stability TS CONDITIONS VIN=5.0V IOUT=0A 4.75V≦VIN≦7.0V IOUT=0A VIN=5.0V 0A≦IOUT≦1.0A ΔVOUT=±1％ 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V VIN=5.0V 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V 0A≦IOUT≦1.0A VIN=5.0V IOUT=100mA *Over Temp. STANDARD VALUE MIN. TYP. MAX. 2.475 2.500 2.525 2.450 2.500 2.550 UNITS V - 1.0 6.8 *Over Temp. *Over Temp. 1.0 2.5 5.1 1.2 1.3 1.5 25.3 30.3 1.4 - *Over Temp. - 6 13 mA - 50 - ppm/ ℃ - 0.5 - ％ *Over Temp. *Over Temp. mV mV V A *Over Temp. = Over Temperature (0～＋70℃) 5/13 XB1117 Series ■ELECTRICAL CHARACTERISTICS (Continued) XB1117P331 TJ =25℃ PARAMETER SYMBOL CONDITIONS Output Voltage VOUT Line Regulation ΔVOUT1 4.75V≦VIN≦7.0V IOUT=0A Load Regulation ΔVOUT2 VIN=5.0V 0A≦IOUT≦1.0V Dropout Voltage Vdif ΔVOUT=±1％ 0A≦IOUT≦1.0A Current Limit Ilim Supply Current ISS Temperature Coefficient TC Temperature Stability TS VIN=5.0V IOUT=0A MIN. TYP. MAX. UNITS 3.267 3.234 3.300 3.300 3.333 3.366 V - 1.0 4.5 *Over Temp. *Over Temp. 1.0 3.4 6.7 1.2 1.3 1.5 10.0 13.4 1.4 - *Over Temp. - 6 13 mA - 50 - ppm/℃ - 0.5 - ％ *Over Temp. *Over Temp. 4.75V≦VIN≦7.0V VIN=5.0V 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V 0A≦IOUT≦1.0A VIN=5.0V IOUT=100mA *Over Temp. mV V A *Over Temp. = Over Temperature (0～＋70℃) TJ=25℃ XB1117K12B PARAMETER SYMBOL Reference voltage Vref Line Regulation ΔVOUT1 Load Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Temperature Coefficient Ilim Adjust Pin Current IADJ Adjust Pin Current Change ΔIADJ Temperature Stability TS Minimum Load Current IOUT TC CONDITIONS VIN=5.0V IOUT=10mA 4.75V≦VIN≦7.0V IOUT=0A VIN=5.0V 10mA≦IOUT≦1.0A ΔVOUT=±1％ 10mA≦IOUT≦1.0A 2.75A≦VIN≦7.0V 2.75V≦VIN≦7.0V 10mA≦IOUT≦1.0A 2.75V≦VIN≦7.0V 10mA≦IOUT≦1.0A 2.75V≦VIN≦7.0V 10mA≦IOUT≦1.0A VIN=5.0V IOUT=100mA VOUT=5.0V *Over Temp. = Over Temperature (0～＋70℃) 6/13 MIN. TYP. MAX. UNITS 1.238 1.225 1.250 1.250 1.262 1.275 V - 0.04 0.20 ％ 1.0 0.1 0.2 1.2 1.3 1.5 0.3 0.4 1.4 - - 50 - *Over Temp. - 55 - 120 μA *Over Temp. - 0.2 5.0 μA *Over Temp. - 0.5 - ％ - - 10 mA *Over Temp. *Over Temp. *Over Temp. *Over Temp. ％ V A ppm/ ℃ XB1117 Series ■OPERATIONAL EXPLANATION 1. Output voltage adjustment The XB1117 series provide a stable output by comparing the output voltage to an internal reference voltage. With the adjustable XB1117K type, a 1.25V reference voltage (VREF) is fixed between the VOUT pin and the ADJ pin and the external resistors R1 and R2 are used to set the output voltage. The resistance values of R1 and R2 should be set so as to provide a minimum load current of 10mA. The output voltage is given by the following equation. VOUT=VREF(1+R2/R1)+IADJ x R2 The output voltage of the XB1117P type is internally fixed to 1.8V, 2.5V, 3.3V, and 5.0V so external resistors are not necessary. 2. Stability and load regulation The XB1117 series requires a load capacitor between the VOUT pin and the GND pin to provide phase compensation thereby ensuring stability of the output voltage. Either a tantalum capacitor of more than 10μF (TYP.) or an aluminum electrolytic capacitor of more than 50μF (TYP.) should be connected. (Note : The capacitor's ESR value should not exceed 0.5Ω.) The output capacitor does not have a theoretical upper limit so increasing its value will increase stability. CL=100μF or more is typical for high current regulator design. In order to avoid any reductions in output voltage accuracy with the XB1117K type, we recommend not to place a parasitic resistor (Rp) between the VOUT pin and the divider resistor R1. The parasitic resistor (Rp) does not influence the output however if the divider resistor R1 is directly connected to the VOUT pin. With the XB1117P type, although external resistor (R1) is internally connected to the VOUT pin, stability can be maintained by not wiring a parasitic resistor to the GND pin. 7/13 XB1117 Series ■OPERATIONAL EXPLANATION (Continued) 3. Thermal protection XB1117 series has thermal protection which limits junction temperature to 150℃. However, device functionally is only guaranteed to a maximum junction temperature of + 125℃. The power dissipation and junction temperature for the XB1117 series are given by; PD=(VIN-VOUT) x IOUT TJ=TA+(PD×θJA) NOTE：TJ must not exceed 125℃. 4. Current limit protection XB1117 series is protected against overload conditions. Current protection is triggered at 1.5A (TYP.). 5. Thermal consideration The XB1117 series contain thermal limiting circuitry designed to protect itself from over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mentioned in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this product series is electrically connected to the output. Therefore, if the case of the device is not electrically isolated, a thermally conductive spacer is recommended. ■APPLICATION CIRCUITS ●Adjustable Output Voltage 8/13 XB1117 Series ■APPLICATION CIRCUITS (Continued) ●Regulator with reference voltage ●Regulator with reverse diode protection 9/13 XB1117 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Load Regulation vs. Ambient Temperature (2) Reference Voltage vs. Ambient Temperature (3) Output Short Circuit Current vs. Dropout Voltage (4) Dropout Voltage vs. Output Current (5) Adjust Pin Current vs. Ambient Temperature (6) Supply Current vs. Dropout Voltage (7) Load Transient Response 10/13 (8) Line Transient Response XB1117 Series ■ PACKAGING INFORMATION ●SOT-223 ■MARKING RULE ●SOT-223 ① Represents product series MARK B PRODUCT SERIES XB1117xxxxFx ② Represents fixed or adjustable output voltage MARK K P PRODUCT SERIES XB1117KxxxFx XB1117PxxxFx ③ Represents output voltage SOT-223 (TOP VIEW) MARK B K T 2 M OUTPUT VOLTAGE (V) ADJ 1.8 2.5 3.3 5.0 PRODUCT SERIES XB1117K12BFx XB1117P181Fx XB1117P251Fx XB1117P331Fx XB1117P501Fx ④ Represents production lot number 0 to 9, A to Z repeated. (G, I, J, O, Q, W are excepted.) 11/13 XB1117 Series 1. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date. 2. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.) 5. Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. 12/13 XB1117 Series 13/13