G5107TPU

Global Mixed-mode Technology Inc. G5107 Low-Voltage, High-Efficiency, Step-up DC-DC Converter Features 1.2V Low Start-up Input Voltage Deliver 3.3V 100mA from 2 Alkaline Battery Cell 90% Efficiency Adjustable Output from 2.5V to 5.5V 1.5A, 0.3Ω, 7V Power MOSFET 1.2V to 5.5V Input Range Fast 1MHz Switching Frequency SOT-23-6 & TSOT-23-6 Package General Description The G5107 boost converter in corporate high-performance, voltage-mode, fixed-frequency (at 1MHz), pulse width modulation (PWM) circuitry with a built-in 0.3Ω n-channel MOSFET to provide a highly efficient regulator. The low start-up input voltage 1.2V makes G5107 suitable for 2~4 cells alkaline battery applications. High switching frequency allows easy filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of various types of output capacitors. The device can produce an output voltage from 2.5V to 5.5V. The G5107 is available in a space-saving SOT-23-6 & TSOT-23-6 package. Applications MP3 Players PDAs Digital Still Cameras Portable Applications Hand-Held Devices Ordering Information ORDER NUMBER G5107TBU G5107TPU MARKING 5107xx 5107xx TEMP. RANGE -40°C ~ +85°C -40°C ~ +85°C PACKAGE (Pb free) SOT-23-6 TSOT-23-6 Note: TB : SOT23-6 U: Tape & Reel TP: TSOT-23-6 Pin Configuration Typical Application Circuit L1 VIN C1 100µF + 4.7µH 1N5819 VOUT 3.3V SW 1 6 VCC VCC VCC SHDN GND SW FB COMP RC CC R2 R1 + C3 100µF GND 2 G5107 5 COMP C2 1 µF FB 3 SOT-23-6 / TSOT-23-6 4 SHDN Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. Absolute Maximum Ratings VCC, SHDN , SW to GND. . . . . . . . . . . . . -0.3V to +7V FB, COMP to GND. . . . . . . . . . . . . . . . . . -0.3V to VCC Operating Temperature. . . . . . . . . . . . .. -40°C to 85°C G5107 Junction Temperature . . . . . . . . . . . . . . . . . . . . .125°C Storage Temperature. . . . . . . . . . . . . . -65°C to 150°C Reflow Temperature (soldering, 10sec) . . . . . . 260°C Stress beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device. Electrical Characteristics (VIN = 1.5V, VCC = V SHDN = 3V, TA = 25°C) PARAMETER Start-Up Voltage Range Operating Voltage Range VFB = 1.5V (no switching) Quiescent Current VFB = 0V (switching) V SHDN = 0V FB Comparator Trip Point Error Amp Transconductance Error Amp Voltage Gain Output Over Voltage Protection Switching Frequency Maximum Duty Switch RDS(ON) Switch Leakage Current Switch Current Limit Switch Current Limit (startup) SHDN Pin Voltage High SHDN Pin Voltage Low CONDITIONS IOUT=1mA MIN --2.5 ------1.26 --------- TYP 1.2 --100 --0.1 1.28 100 0.76 100 5 1 --0.3 0.1 1.5 0.6 ----- MAX --5.5 200 2 1 1.3 ------10 1.3 --0.5 10 1.8 ----0.1xVCC UNITS V V µA mA µA V ppm/°C mmho V/V % MHz % Ω µA A A V V Initial Accuracy Temperature Coefficient VFB = 0V ISW = 150mA VSW = 7V 0.7 85 ----1.2 --0.9xVCC --- Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Typical Performance Characteristics (VCC= +3.6V, V SHDN =+3.6V, L=4.7μH, TA=25°C, unless otherwise noted.) G5107 IQ_SW vs. Temperature 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 IQ_SW vs. VCC 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 2 2.5 3 3.5 4 4.5 5 5.5 6 IQ_SW (mA) IQ_SW (mA) -40 -20 0 20 40 60 80 100 VCC (V) Temperature (°C) IQ_NoSW vs. VCC 150 125 150 125 IQ_NoSW vs. Temperature IQ_NoSW ( µA) IQ_NoSW ( µA) 100 75 50 25 0 2 2.5 3 3.5 4 4.5 5 5.5 6 100 75 50 25 0 -40 -20 0 20 40 60 80 100 VCC (V) Temperature (°C) IQ_SHDN vs. VCC 0.1 0.08 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0.1 2 2.5 3 3.5 4 4.5 5 5.5 6 0.1 0.08 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0.1 -40 IQ_SHDN vs. Temperature IQ_SHDN (µA) IQ_SHDN (µA) -20 0 20 40 60 80 100 VCC (V) Temperature (°C) Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 3 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Feedback Voltage vs. VCC 1.3 1.295 1.29 1.285 1.28 1.275 1.27 1.265 1.26 2 2.5 3 3.5 4 4.5 5 5.5 6 G5107 Feedback Voltage vs. Temperature 1.3 1.295 1.29 1.285 1.28 1.275 1.27 1.265 1.26 -40 -20 0 20 40 60 80 100 Feedback Voltage (mV) Feedback Voltage (mV) VCC (V) Temperature (°C) Frequency vs. VCC 1 0.9 0.8 1 0.9 0.8 Frequency vs. Temperature Frequency (MHz) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 2 2.5 3 3.5 4 4.5 5 5.5 6 Frequency (MHz) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -40 -20 0 20 40 60 80 100 VCC (V) Temperature (°C) SW R_on vs. VCC 0.5 0.45 0.4 0.5 0.45 0.4 SW R_on vs. Temperature SW R_on (Ω) SW R_on (Ω) 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 2 2.5 3 3.5 4 4.5 5 5.5 6 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 -40 -20 0 20 40 60 80 100 VCC (V) Temperature (°C) Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 4 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) Current Limit vs. VCC 1.8 1.7 1.8 1.7 G5107 Current Limit vs. Temperature Current Limit (A) Current Limit (A) 1.6 1.5 1.4 1.3 1.2 2 2.5 3 3.5 1.6 1.5 1.4 1.3 1.2 VCC (V) 4 4.5 5 5.5 6 -40 -20 0 20 40 60 80 100 Temperature (°C) Stability Waveform Stability Waveform Stability Waveform Stability Waveform Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 5 Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) G5107 Load Transient Load Transient Efficiency vs. Load Current 100 90 80 70 60 50 40 30 20 10 0 1 10 100 1000 VOUT = 3.3V 100 90 80 70 60 50 40 30 20 10 0 1 Efficiency vs. Load Current VIN=4.5V Efficiency (%) Efficiency (%) VIN=1.5V VIN=2.0V VIN=2.5V VIN=3.0V VIN=2.0V VIN=2.5V VIN=1.5V VOUT = 5.0V 10 100 VIN=4.0V VIN=3.5V VIN=3.0V 1000 10000 Load Current (mA) Load Current (mA) Max. Output Current vs. Input Voltage 1200 Recommended Minimum Footprint SOT-23-6/ TSOT-23-6 Max. Output Current (mA) 1000 800 600 400 200 0 0 0.5 1 1.5 2 VOUT = 3.3V VOUT = 5.0V 2.5 3 3.5 4 4.5 5 Input Voltage (V) Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 6 Global Mixed-mode Technology Inc. Pin Description PIN 1 2 3 4 5 6 G5107 NAME SW GND FB SHDN FUNCTION Switch Pin. The drain of the internal NMOS power switch. Connect this pin to inductor. Ground Pin. Feedback Pin. Active Low Shutdown Pin. Compensation Pin. Input Supply Pin. Bypass this pin with a capacitor as close to the device as possible. COMP VCC Block Diagram FB COMP SW COMPARATOR A1 + A2 + R Q CONTROL DRIVER M1 S 1.28V VREF RAMP GENERATOR OC + 1MHz OSCILLATOR VCC SHDN GND White LED Driver L1 VIN C1 VCC ON OFF SHDN SW M1 C2 D2 (Optional) D1 VOUT G5107 GND R2 FB COMP R3 RC CC R4 R1 VBIAS VDIM PWM Dimming Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 7 Global Mixed-mode Technology Inc. Function Description Normal Operation The G5107 uses a constant frequency control scheme to provide excellent line and load regulation. Operation can be best understood by referring to the block diagram. At the start of each oscillator cycle, the SR latch is set, which turns on the power switch M1. An artificial ramp is generated to the positive terminal of the PWM comparator A2. When this voltage exceeds the level at the negative input of A2, the SR latch is reset turning off the power switch. The level at the negative input of A2 is set by the error amplifier A1, and is simply an amplified version of the difference between the feedback voltage and the reference voltage of 1.28V. In this manner, the error amplifier sets the correct peak current level (DCM) or duty (CCM) to keep the output in regulation. Over Voltage Protection Over voltage protect function is designed to prevent the output accidentally damage the load. Once the device detects over voltage (nominalx1.05) at the output, the internal NMOS switch turned off to stop power input. G5107 Capacitor Selection Various types of output capacitor are suitable for G5107. To obtain small output ripple, the small size of ceramic capacitors are suitable for G5107 applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and temperature ranges than other types such as Y5V or Z5U. A 4.7µF~22µF output capacitor is enough for most applications. To using a low cost Tantalum/Electrolytic type capacitors, a 47µF~100µF output capacitor is enough. Another small 1µF ceramic is recommended to place near G5107 VCC pin to bypass high frequency noise generated from the higher ESR output capacitor. Diode Selection Schottky diodes, with their low forward voltage drop and fast reverse recovery, are the ideal choices for G5107 applications. The forward voltage drop of a Schottky diode represents the conduction losses in the diode, while the diode capacitance (CT or CD) represents the switching losses. For diode selection, both forward voltage drop and diode capacitance need to be considered. Schottky diodes with higher current ratings usually have lower forward voltage drop and larger diode capacitance, which can cause significant switching losses at the 1MHz switching frequency of the G5107. A Schottky diode rated at 2A is sufficient for most G5107 applications. Application Information Inductor Selection A 2.2µH~10µH inductor is recommended for small ripple applications. Small form factor and high efficiency are the major concerns for most G5107 applications. Inductor with low core losses and small DCR (cooper wire resistance) at 1MHz are good choice for G5107 applications. Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 8 Global Mixed-mode Technology Inc. Package Information G5107 C L D E H e1 e θ1 A2 b A A1 SOT-23-6 (TB) Package Note: 1. Package body sizes exclude mold flash protrusions or gate burrs 2. 3. Tolerance ±0.1000 mm (4mil) unless otherwise specified 4. Coplanarity: 0.1000mm 5. Dimension L is measured in gage plane SYMBOL A A1 A2 b C D E e e1 H L θ1 MIN. 1.00 0.00 0.70 0.35 0.10 2.70 1.40 --------2.60 0.37 1° DIMENSION IN MM NOM. 1.10 ----0.80 0.40 0.15 2.90 1.60 1.90(TYP) 0.95 2.80 -----5° MAX. 1.30 0.10 0.90 0.50 0.25 3.10 1.80 --------3.00 ----9° MIN. 0.039 0.000 0.028 0.014 0.004 0.106 0.055 --------0.102 0.015 1° DIMENSION IN INCH NOM. 0.043 ----0.031 0.016 0.006 0.114 0.063 0.075(TYP) 0.037 0.110 ----5° MAX. 0.051 0.004 0.035 0.020 0.010 0.122 0.071 --------0.118 ----9° Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 9 Global Mixed-mode Technology Inc. D C L G5107 E1 E1 E e e1 θ1 A2 y A1 A b TSOT-23-6 (TP) Package Note: 1. Dimension D does not include mold flash, protrusions or tate burrs. Mold flash, protrusions or gate burrs shall not exceed 0.1mm PER end. Dimension E1 does not include interlead flash or protrusion. Interlead flash or protrusion shall not exceed 0.15mm PER side. 2. The package top may be smaller than the package bottom. Dimensions D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. SYMBOL A A1 A2 b C D E E1 e e1 L y θ1 MIN. 0.75 0.00 0.70 0.35 0.10 2.80 2.60 1.50 DIMENSION IN MM NOM. --------0.75 --------2.90 2.80 1.60 0.95 BSC 1.90 BSC ------------- MAX. 0.90 0.10 0.80 0.51 0.25 3.00 3.00 1.70 MIN. 0.030 0.000 0.028 0.014 0.004 0.110 0.102 0.059 DIMENSION IN INCH NOM. --------0.030 --------0.114 0.110 0.063 0.0374 BSC 0.0748 BSC ------------- MAX. 0.035 0.004 0.031 0.020 0.010 0.118 0.118 0.067 0.37 ----0° ----0.10 8° 0.015 0° ----0.004 8° Taping Specification PACKAGE SOT-23-6 TSOT-23-6 Feed Direction SOT-23-6/TSOT-23-6 Package Orientation GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications. Q’TY/REEL 3,000 ea 3,000 ea Ver: 0.3 Preliminary May 11, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw 10