Preliminary ◆Bi-polar transistors LDD ◆Output Voltage (1.8V, 2.5V, 3.3V, 5.0V, ADJ) ◆Output Voltage Accuracy :±1% ◆Output Current :Up to 1A ■APPLICATIONS ●Highly efficient linear regulator ●5V ~ 3V DC / DC converter ●Battery charger ●Local power supply inside equipment ●Battery powered equipment ■GENERAL DESCRIPTION ■FEATURES The XB1117 series is a 1A low dropout positive voltage regulator. 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 the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type. 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 (10μF, tantalum) and an output capacitor. Package is available in SOT-223. Low Dropout Voltage ■TYPICAL APPLICATION CIRCUIT : 1.2V @ IOUT = 1A Adjustable or Fixed Voltages : 1.8V, 2.5V, 3.3V, 5.0V (ADJ) Line Regulation (TYP.) : 0.04% (ADJ) Load Regulation (TYP.) : 0.1% (ADJ) Adjust pin current less than 120μA (ADJ) Overcurrent protection circuit built-in Thermal protection circuit built-in Package : SOT-223 ■ TYPICAL PERFORMANCE CHARACTERISTICS 3 XB1117 Series ■PIN CONFIGURATION ■PIN ASSIGNMENT PIN 1 PIN NAME ADJ/GND FUNCTION ADJ/Ground 2 VOUT Output 3 VIN Power Input SOT-223 （TOP VIEW） ■PRODUCT CLASSIFICATION ●Ordering Information XB1117①②③④⑤⑥ DESIGNATOR DESCRIPTION ① Type of Regulator ②③④ 4 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 ■ PACKAGING INFORMATION ●SOT-223 ■BLOCK DIAGRAM 5 XB1117 Series ■ABSOLUTE MAXIMUM RATINGS XB1117P50 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 θJC 15 UNITS V ℃/W θJA 160 PD 625 mW TOPR TJ TSTG TLEAD 0 ~＋70 0 ~＋125 -65 ~＋150 260 ℃ *Stress above the listed absolute maximum rating may cause permanent damage to the device. ** Please note that the difference between the rated input voltage of the XB1117P50 (VOUT=5.0V) and the XB1117P18 / 25 / 30 (VOUT=1.8V, 2.5V and 3.0V) and XB1117K type. ■ELECTRICAL CHARACTERISTICS XB1117P501 PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Supply Current Temperature Coefficient Temperature Stability Ta=25℃ SYMBOL VIN=7.0V IOUT=0A 7.0V≦VIN≦9.0V ΔVOUT1 IOUT=0A VIN=7.0V ΔVOUT2 0A≦IOUT≦1.0A ΔVOUT=±1％ Vdif 0A≦IOUT≦1.0A Ilim 7.0V≦VIN≦10.0V VIN=7.0V ISS 0A≦IOUT≦1.0A 7.0V≦VIN≦10.0V TC 0A≦IOUT≦1.0A VIN=7.0V TS IOUT=100mA VOUT *Over Temp. = Over Temperature（0～＋70℃） 6 CONDITIONS *Over Temp. *Over Temp. STANDARD VALUE MIN. TYP. MAX. 4.950 5.000 5.050 4.900 5.000 5.100 UNITS V - 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（XB1117P18, P25, P33, K） PARAMETER SYMBOL RATINGS UNITS Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power Dissipation (ΔT=100℃) Operating Temperature Range VIN 7.0 V θJC 15 θJA 160 PD 625 TOPR 0 ~ 70 Operating Temperature Range TJ 0 ~ 125 Storage Temperature Range TSTG -65 ~ 150 Lead Temperature TLEAD 260 ℃/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 STANDARD VALUE CONDITIONS UNITS MIN. TYP. MAX. 1.782 1.800 1.818 1.764 1.800 1.836 - 1.0 6.8 - 1.80 18.2 *Over Temp. - 3.70 22.0 - 1.2 1.4 0A≦IOUT≦1.0A *Over Temp. - 1.3 - 4.75V≦VIN≦7.0V *Over Temp. 1.0 1.5 - A *Over Temp. - 6 13 mA 50 - ppm/℃ 0.5 - ％ VIN=5.0V IOUT=0A *Over Temp. 4.75V≦VIN≦7.0V IOUT = 0A VIN=5.0V 0A≦IOUT≦1.0A ΔVOUT=±1％ VIN=5.0V 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V 0A≦IOUT≦1.0A VIN=5.0V *Over Temp. IOUT=100mA - V mV mV V *Over Temp. = Over Temperature（0～＋70℃） XB1117P251 TJ =25℃ PARAMETER SYMBOL Output Voltage VOUT Line Regulation ΔVOUT1 oad Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Ilim Supply Current ISS Temperature Coefficient TC Temperature Stability TS STANDARD VALUE CONDITIONS VIN=5.0V IOUT=0A *Over Temp. 4.75V≦VIN≦7.0V IOUT=0A VIN=5.0V MIN. TYP. MAX. 2.475 2.500 2.525 2.450 2.500 2.550 - 1.0 6.8 UNITS V mV - 2.5 25.3 *Over Temp. - 5.1 30.3 - 1.2 1.4 0A≦IOUT≦1.0A *Over Temp. - 1.3 - 4.75V≦VIN≦7.0V *Over Temp. 1.0 1.5 - A *Over Temp. - 6 13 mA - 50 - ppm/℃ - 0.5 - ％ 0A≦IOUT≦1.0A ΔVOUT=±1％ 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 *Over Temp. = Over Temperature（0～＋70℃） 7 XB1117 Series ■ELECTRICAL CHARACTERISTICS (Continued) XB1117P331 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 STANDARD VALUE CONDITIONS VIN=5.0V IOUT=0A *Over Temp. MIN. TYP. MAX. 3.267 3.300 3.333 3.234 3.300 3.366 - 1.0 4.5 - 3.4 10.0 - 6.7 13.4 - 1.2 1.4 4.75V≦VIN≦7.0V IOUT=0A VIN=5.0V 0A≦IOUT≦1.0V *Over Temp. ΔVOUT=±1％ UNITS V mV V 0A≦IOUT≦1.0A *Over Temp. - 1.3 - 4.75V≦VIN≦7.0V *Over Temp. 1.0 1.5 - A *Over Temp. - 6 13 mA - 50 - ppm/℃ - 0.5 - ％ VIN=5.0V 0A≦IOUT≦1.0A 4.75V≦VIN≦7.0V 0A≦IOUT≦1.0A VIN=5.0V *Over Temp. IOUT=100mA *Over Temp. = Over Temperature（0～＋70℃） XB1117K12B Ta=25℃ PARAMETER SYMBOL Reference voltage Vref Line Regulation ΔVOUT1 Load Regulation ΔVOUT2 Dropout Voltage Vdif Current Limit Ilim Temperature Coefficient TC Adjust Pin Current IADJ Adjust Pin Current Change ΔIADJ Temperature Stability TS Minimum Load Current IOUT CONDITIONS MIN. VIN=5.0V IOUT=10mA *Over Temp. 4.75V≦VIN≦7.0V IOUT=0A VIN=5.0V 10ｍA≦IOUT≦1.0A *Over Temp. ΔVOUT=±1％ TYP. MAX. 1.238 1.250 1.262 1.225 1.250 1.275 - 0.04 0.20 - 0.1 0.3 - 0.2 0.4 - 1.2 1.4 UNITS V ％ ％ V 10ｍA≦IOUT≦1.0A *Over Temp. - 1.3 - 2.75A≦VIN≦7.0V *Over Temp. 1.0 1.5 - A - 50 - ppm/℃ 55 - 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℃） 8 STANDARD VALUE μA *Over Temp. - - 120 *Over Temp. - 0.2 5.0 μA *Over Temp. - 0.5 - ％ - - 10 mA XB1117 Series ■OPERATIONAL EXPLANATION 1. Output voltage adjustment The XB1117 series provides 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 set 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 that you do not 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. 3. Thermal protection XB1117 series has themal protection which limits junction temperature to 150℃. However,device functionally is only guaranteed to a maximum junction temperture of + 125℃. The power disspation and junction temperture for XB1117 in DPAK package are given by PD=(VIN-VOUT)×IOUT TJUNCTION=T AMBIENT+（PD×θJA） NOTE：T JUNCTION must not exceed 125℃. 9 XB1117 Series ■OPERATIONAL EXPLANATION (Continued) 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 must be electrically isolated, a thermally conductive spacer is recommended. ■APPLICATION CIRCUITS Adjustable Output Voltage XB1117K VIN=5V VIN *VOUT=1.5-3.45V VOUT ADJ R1 10μF ** 10μF 1kΩ R2 2kΩ Note: *VOUT=VREF (1+ R2 )+IADJ×R2 R1 **Optional for improved ripple rejection 10 10μF XB1117 Series ■APPLICATION CIRCUITS (Continued) Regulator with reference voltage XB1117 VIN VIN *VOUT VOUT GND VREF 10μF 10μF R1：1kΩ ** ** 10μＦ 10μF Zener diode or voltage reference *VOUT==V Note: *Vout VREF+VZ(VZ: Breakdown voltage of Zener diode) ** Optional for improved ripple rejection **Optional Regulator with reverse diode protection XB1117 VIN VIN VOUT VOUT GND 10μF 10μF 11 XB1117 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Load Stability－Ambient Temperature XB117K12B VIN=5V ILOAD=1A CIN=10μF(tantalum),CL=10μF(tantalum) (3) Output Short Circuit Current－Dropout Voltage XB117P33 TJ=25% CIN=10μF(tantalum),CL=10μF(tantalum) (5) Adjust Pin Current－Ambient Temperature XB117K12B VIN=5.0V CIN=10μF(tantalum),CL=10μF(tantalum) (7) Load Transient Response 12 (2) Reference Voltage－Ambient Temperature XB117K12B VIN=5V IOUT=1A CIN=10μF(tantalum),CL=10μF(tantalum) (4) Dropout Voltage－Output Current XB117P33 TJ=25℃ CIN=10μF(tantalum),CL=10μF(tantalum) (6) Supply Current－Dropout Voltage XB117P33 TJ=25％ CIN=10μF(tantalum),CL=10μF(tantalum) (8) Input Transient Response