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XCM519 Datasheet(PDF) 1 Page - Torex Semiconductor |
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XCM519 Datasheet(HTML) 1 Page - Torex Semiconductor |
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1 / 49 page  1/49 XCM519 Series 600mA Synchronous Step-Down DC/DC Converter + Low Voltage Input LDO ■GENERAL DESCRIPTION The XCM519 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous step–down DC/DC converter and a low voltage input LDO regulator. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications. Battery operated portable products require high efficiency so that a dual DC/DC converter is often used. The XCM519 can replace this dual DC/DC to eliminate one inductor and reduce output noise. The DC/DC converter and the LDO regulator blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal. A low output voltage and low On-resistance LDO regulator is added in series to the DC/DC output so that one another low output voltage is created with a high efficiency and low noise. With comparison to the dual DC/DC solution, one inductor can be eliminated which results in parts reduction and board space saving. ■APPLICATIONS ●Mobile phones, Smart phones ●Bluetooth equipment ●Portable communication modems ●Portable game consoles (TOP VIEW) * The dashed lines denote the connection using through-holes at the backside of the PC board. ETR2421-003 ■ TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage vs. Output Current VR O UT= 1.2V 0 50 100 150 200 250 300 0 100 200 300 400 Output Current: IOUT(mA) VBIAS=3.0V VBIAS=3.3V VBIAS=3.6V VBIAS=4.2V VBIAS=5.0V Ta=25℃ ■FEATURES <DC/DC Convertor Block> Input Voltage Range : 2.7V ~ 6.0V Output Voltage Range : 0.8V ~ 4.0V High Efficiency : 92% (TYP.) Output Current : 600mA (MAX.) Oscillation Frequency : 1.2MHz, 3.0MHz (+15%) Maximum Duty Cycle : 100% Soft-Start Circuit Built-In Current Limiter Circuit Built-In (Constant Current & Latching) Control Methods : PWM (XCM519A) PWM/PFM Auto (XCM519B) *Performance depends on external components and wiring on PCB wiring. <Regulator Block> Maximum Output Current : 400mA (Limiter 550mA TYP.) Dropout Voltage : 35mV@IOUT=100mA (TYP.) (at VBIAS - VROUT(E)=2.4V) Bias Voltage Range : 2.5V ~ 6.0V (VBIAS - VROUT(E)=0.9V) Input Voltage Range : 1.0V ~ 3.0V (VIN2≦VBIAS) Output Voltage Range : 0.7V ~ 1.8V (0.05V increments) High Output Accuracy : ±20mV Supply Current : IBIAS=25μA , IIN2=1.0μA (TYP.) Stand-by Current : IBIAS=0.01μA , IIN2=0.01μA (TYP.) UVLO : VBIAS=2.0V , VIN2=0.4V (TYP) Thermal Shut Down : Detect 150℃, Release 125℃ (TYP.) Soft-start Time : 240μs＠VROUT=1.2V(TYP.) CL High Speed Auto-Discharge Low ESR Capacitor : Ceramic Capacitor Compatible Operating Temperature Range : -40℃ ~ +85℃ Package : USP-12B01 Standard Voltage Combinations : DC/DC VR XCM519xx01Dx 1.8V 1.2V XCM519xx02Dx 1.8V 1.5V XCM519xx03Dx 1.5V 1.2V XCM519xx04Dx 1.8V 1.0V XCM519xx05Dx 1.5V 1.0V *Other combinations are available as semi-custom products. |
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