XC9119D10AMR

XC9119D10A Series ETR0408_008 1MHz, PWM Controlled, Step-Up DC/DC Converter, Ceramic Capacitor Compatible ■GENERAL DESCRIPTION The XC9119D10A series is 1MHz, PWM controlled step-up DC/DC converter, designed to allow the use of ceramic capacitors. With a built-in 2.0Ω switching transistor, the XC9119D10A series can easily provide a step-up operation by using only a coil, a diode, a capacitor, and a resistor, connected externally. Since output voltage up to 19.5V (Maximum Lx operating voltage: 20V) can be derived with reference voltage supply of 1.0V (±2.0%) and external components, the series can easily supply high voltage for various general-purpose power supplies, LCD panels and organic EL displays. With a high switching frequency of 1.0MHz, a low profile and small board area solution can be achieved using a chip coil and an ultra small ceramic output capacitor. With the current limit function (400mA (TYP.): VDD=3.6V), a peak current, which flows through built-in driver transistors can be limited. Soft-start time can be adjusted by external resistors and capacitors. The stand-by function enables the output to be turned off (CE ’L’), that is, the supply current will be less than 1.0⎧A. ■APPLICATIONS ●Organic electroluminescence display (OELD) ●Power supplies for LCDs ●Multi-function power supplies ■FEATURES Operating Voltage Range : 2.5V ~ 6.0V Output Voltage Range : Up to 19.5V externally set-up : Reference voltage 1.0V +2.0% Oscillation Frequency : 1.0MHz±20% ON Resistance : 2.0Ω (VDD=3.6V, VDS=0.4V) Efficiency : 86% (VOUT=15V, VDD=3.6V, IOUT=10mA) : PWM control Stand-by function : ISTB=1.0⎧A (MAX.) Load Capacitor : Low ESR ceramic capacitor Ultra Small Packages : SOT-25, USP-6C Lx Limit Current : 400mA (VDD=3.6V) B ■TYPICAL PERFORMANCE CHARACTERISTICS ○Efficiency vs. Output Current XC9119D10A Efficiency: EFFI(%) ■TYPICAL APPLICATION CIRCUIT Control 100 90 80 70 60 50 40 30 20 10 0 6V 5V 4.2V 3.6V VIN=2.5V 2.7V 3V T a=25 o C 0.1 1 10 100 1000 Output Current: IOUT (mA) 1/18 XC9119D10A Series ■PIN CONFIGURATION *The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat resistance. If the pad needs to be connected to other pins, it should be connected to the VSS pin. USP-6C (BOTTOM VIEW) SOT-25 (TOP VIEW) ■PIN ASSIGNMENT PIN NUMBER SOT-25 USP-6C 1 2 3 4 5 - 2 3 1 6 4 5 PIN NAME FUNCTION Lx VSS FB CE/SS VDD NC Switch Ground Voltage Feedback Chip Enable/ Soft Start Power Input No Connection ■CE PIN FUNCTION CE/SS PIN OPERATIONAL STATE H L Operation Shut-down ■PRODUCT CLASSIFICATION ●Ordering Information XC9119D①②③④⑤-⑥(*1) DESIGNATOR DESCRIPTION SYMBOL ①② Reference Voltage 10 FB voltage ③ Oscillation Frequency A 1MHz MR ④⑤-⑥ MR-G Packages Taping Type (*2) ER ER-G (*1) DESCRIPTION SOT-25 SOT-25 (Halogen & Antimony free) USP-6C USP-6C (Halogen & Antimony free) The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant. (*2) The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office or representative. (Standard orientation: ④R-⑥, Reverse orientation: ④L-⑥) 2/18 XC9119D10A Series ■BLOCK DIAGRAM Phase Compensation VDD Current Limit & Feedback Error Amp. LX + FB + - logic - Vref with Soft-start, CE Buffer Driver PWM Comparator VSS Ramp Wave Generator, OSC CE/SS ■ABSOLUTE MAXIMUM RATINGS Ta = 25OC PARAMETER SYMBOL RATINGS UNITS VDD Pin Voltage Lx Pin Voltage VDD VSS – 0.3 ~ 7.0 V VLx VSS – 0.3 ~ 22.0 V FB Pin Voltage VFB VSS – 0.3 ~ 7.0 V CE Pin Voltage VCE VSS – 0.3 ~ 7.0 V Lx Pin Current ILx 1000 mA Power Dissipation SOT-25 USP-6C Pd 250 120 mW Operating Temperature Range Topr - 40 ~ + 85 O Storage Temperature Range Tstg - 55 ~ +125 O C C 3/18 XC9119D10A Series ■ELECTRICAL CHARACTERISTICS XC9119D10AMR Ta = 25 OC CIRCUI UNIT T PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. FB Voltage VFB △VFB/ △VIN・VFB VDD - 0.980 1.000 1.020 V ① 2.5