XC6385A

Series PFM (Frequency)Controlled, Step-Up DC/DC Converters NPager Use NDuty Ratio NCMOS Structure : Low Noise : 75% : Small Supply ■Applications GPagers GPalmtops GCameras, Video cameras GVarious portable products Current NOperating Voltage Range : 0.9~10.0V NOutput Voltage Range : 2.0~7.0V NOutput Voltage Accuracy : ±2.5% 4 ■Features Low noise Operating voltage range : 0.9V~10V Output voltage range : 2.0V~7.0V (programmable in 0.1V steps) Output voltage accuracy: ±2.5% Maximum oscillator frequency : 100kHz (±15%) Built-in switching transistor CE function and/or separated VDD/VOUT types selectable with 5 pin packages Small package : SOT-23/25 mini-mold (3pin, 5pin) SOT-89/89-5 mini-power mold (3 pin, 5 pin) ■General Description The XC6385 series are a group of PFM (frequency) controlled step-up DC/DC converters. The XC6385 series employs CMOS process and laser trimming technologies to attain low power and high accuracy. A common problem among pagers is one of noise, but with the XC6385, high frequency noise that occurs during switching is reduced. Output voltage is selectable in 0.1V steps within 2.0V ~ 7.0V and maximum frequency is 100kHz (Typ.) With a built-in switching transistor, a step-up circuit can be configured using a coil, diode and capacitor connected externally. Also available is a CE (chip enable) function that reduces power consumption during shut-down mode, and an independent V DD pin function (separated power supply and voltage detect pins) for fly-back circuits. SOT-89-5 and SOT-23/25 small packages. ■Typical Application Circuit ■Electrical Characteristics For typical application circuit and electrical characteristics of XC6385 series, please refer to that of XC6382 series. For more detail, please contact Torex sales offices or sales person. ■ 端子配列 XC6385A ■Pin Configuration XC6385C/E XC6385C/E VOUT LX VSS XC6385A VSS LX 5 4 3 SOT-23 (TOP VIEW) 5 4 SOT-89 (TOP VIEW) SOT-89-5 (TOP VIEW) SOT-25 (TOP VIEW) 1 VSS 2 LX 1 2 3 CE/VOUT VOUT/VDD NC 1 VSS 2 VOUT 3 LX 1 NC 2 3 VOUT/VDD CE/VOUT 525 XC6385 Series ■Product Classification GSelection Guide PARAT TYPE XC6385A DUTY RATIO 75% PACKAGE SOT-23 SOT-89 SOT-23 SOT-89-5 SWITCHING CE TRANSISTOR FUNCTION Built-in NO VDD PIN NO FEATURES Duty Ratio 75% Stand-by (CE) function During stand-by (CE pin "Low"), Supply current = 0.50µA (max) Since the power supply (VDD) pin and the voltage sensor (VOUT) pin are separated, use as a PFM controller is possible. XC6385C 75% Built-in YES NO XC6385E 75% SOT-23 SOT-89-5 Built-in NO YES 4 GOrdering Information XC6385qwerty XC6385 Series A q C E w e r 1 M t P y R L Package PFM Controlled Duty 75% 3-pin. Built-in switching transistor Stand-by capability. (5-pin) Built-in switching transistor Stand-by capability. (5-pin) Built-in switching transistor Output Voltage e.g.VOUT=3.5V ➔ w=3, e=5 Maximum Oscillator Frequency Package q=A q=C, E q=A q=C, E 100kHz SOT-23 SOT-25 SOT-89 SOT-89-5 Embossed tape: Standard Feed Embossed tape: Reverse Feed 526 XC6385 Series ■Packaging Information GSOT-23 0.4 +0.1 -0.05 0.15 -0.05 +0.1 0∼0.1 2.8±0.2 1.6 +0.2 -0.1 （0.95） 1.9±0.2 2.9±0.2 1.1±0.1 0.2min 4 GSOT-25 0.15 -0.05 0.4 +0.1 -0.05 +0.1 0∼0.1 2.8±0.2 1.6 +0.2 -0.1 （0.95） 1.9±0.2 2.9±0.2 1.1±0.1 0.2min 527 XC6385 GSOT-89 Series 4.5±0.1 1.6 +0.15 -0.2 1.5±0.1 （0.4） 2.5±0.1 0.8 min 4.25max 0.42±0.06 0.47±0.06 0.42±0.06 0.4 +0.03 -0.02 4 1.5±0.1 1.5±0.1 GSOT-89-5 1.6 -0.2 0.42±0.06 （0.4） +0.15 1.5±0.1 0.42±0.06 0.8min 2.5±0.1 0.8min 4.5max 0.4 +0.03 -0.02 0.42±0.06 0.42±0.06 0.42±0.06 0.47±0.06 1.5±0.1 1.5±0.1 4.5±0.1 528 XC6385 Series ■Marking qwer qwer w q r e 2 1 4 3 SOT-23 (TOP VIEW) SOT-25 (TOP VIEW) SOT-89 (TOP VIEW) SOT-89-5 (TOP VIEW) q Represents the Product Classification DESIGNATOR E L N − CE VDD/VIN FUNCTION Built-in Transistor Built-in Transistor Built-in Transistor PRODUCT NAME XC6385A＊＊＊＊＊ XC6385C＊＊＊＊＊ XC6385E＊＊＊＊＊ w Represents the integer of the Output Voltage and Oscillator Frequency INTEGER OF THE OUTPUT VOLTAGE 1 2 3 4 5 6 7 OSCILLATOR FREQUENCY （kHz） 4 100 1 2 3 4 5 6 7 e Represents the decimal number of the Output Voltage and Oscillator Frequency OUTPUT VOLTAGE 0 1 2 3 4 5 6 7 8 9 OSCILLATOR FREQUENCY （kHz） 100 0 1 2 3 4 5 6 7 8 9 r Denotes the production lot number 0 to 9, A to Z repeated(G.I.J.O.Q.W excepted) 529 XC6385 Series ■ ブロック図 ■Block Diagram Lx VLX limiter Buffer VSS PFM Control OSC 100kHz + Vref VDD VOUT Chip Enable CE Note: The CE pin is set up for XC6385C. 4 VDD V DD Lx ・ Buffer VSS ・ PFM Control OSC 100kHz + VLX limiter Vref V OUT Note: The VDD pin is set up for XC6385E. ■Electrical Characteristics For electrical characteristics of XC6385 series, please refer to that of XC6382 series. For more detail, please contact Torex sales offices or sales person. 530 XC6385 Series ■Typical Performance Characteristics GXC6385A301 (Outut Voltage = 3.0V) (1) OUTPUT VOLTAGE vs. OUTPUT CURRENT (2) 効EFFICIENCY vs. OUTPUT CURRENT (2) 率 − 出力電流特性例 (1) 出力電圧 − 出力電流特性例 XC6385A301 3.2 L=220μH,CL=22μF (Tantalum) 100 XC6385A301 L=220μH,CL=22μF (Tantalum) TOP DOWN VIN=1.8V,1.5V,1.2V Output Voltage:VOUT (V) 3.1 3.0 2.9 2.8 2.7 0 Efficiency:EFFI (%) TOP DOWN VIN=1.8V,1.5V,1.2V 80 60 40 20 0 0.9V 0.9V 2 4 6 8 10 0 2 4 6 8 10 Output Current:IOUT (mA) Output Current:IOUT (mA) (3) RIPPLE VOLTAGE vs. OUTPUT CURRENT (3) リップル電圧 − 出力電流特性例 XC6385A301 120 L=220μH,CL=22μF (Tantalum) VIN =1.8V 90 1.5V 60 1.2V (4) NO LOAD − 入力電圧特性例 (4) 無負荷入力電流 INPUT CURRENT XC6385A301 30 vs. INPUT VOLTAGE 4 L=220μH,CL=22μF (Tantalum) Ripple Voltage:Vr (mVp-p) Input Current:IIN (µA) 10 20 10 30 0.9V 0 0 2 4 6 8 0 0.8 1.2 1.6 2.0 2.4 Output Current:IOUT (mA) Input Voltage:VIN (V) 531