G5104 GMT | Alldatasheet
Document overview
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Technical content
Features
Configurable Output Voltage Up to 5.5V 40µA Quiescent Current <1µA Shutdown Current <1µA Shutdown Pin Current Supply Range from 1.7V to 5.5V Low VDS(on): 120mV (ISW=400mA) Tiny SOT-23-5 Package
Applications
Personal Digital Assistants (PDAs) Handheld Computers Digital Still Cameras Cellular Phones WebPad Local 3V to 5V Conversion General Description The G5104 boost converter is designed for 3.3V/5V powered system. Due to a typical 40µA quiescent current and 1.7V~ 5.5V supply voltage range, it is suitable for battery powered portable applications. Such as PDAs and Handheld Computers. When the IC sets to shutdown mode, it only consumes less than 1µA. Furthermore, the 500mA current limit, 450ns fixed minimum off-time and tiny SOT23-5 package facili- tates the use of smaller inductor and other sur- face-mount components to minimize the PCB size in those space-conscious applications. To control the IC, no other external current is needed for the shutdown pin. It typically consumes less than 1µA of full supply range.
Ordering Information
(Pb free) MARKING TEMP. RANGE PACKAGE G5104T11U G5104T1Uf 5104X -40°C ~ +85°C SOT-23-5 Note:T1: SOT-23-5 U: Tape & Reel Pin Configuration Typical Application Circuit G963 VCC SHDN SOT-23-5 G5104 1SW GND FB VCC SW SHDN FB GND G5104 47µF47µF 4.7µH 316k VIN 300mA 10pF (option) G963 VCC SHDN SOT-23-5 G5104 1SW GND FB VCC SW SHDN FB GND G5104 47µF47µF 4.7µH 316k VIN 300mA 10pF (option)
Ver: 1.2 Mar 01, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G5104Global Mixed-mode Technology Inc. Absolute Maximum Ratings Operating Temperature Range (Note 1) -40°C to +85°C Reflow Temperature (Soldering, 10 sec)…….…+260°C Stress beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device.
Electrical Characteristics
(VCC = 3.6V, V SHDN = 3.6V, TA = 25°C) PARAMETER CONDITIONS MIN TYP MAX UNITS Input Voltage Range 1.7 --- 5.5 V Not Switching --- 40 80 µA Quiescent Current V SHDN = 0V --- 0.1 1 µA FB Comparator Trip Point 1.18 1.2 1.22 V Output Voltage Line Regulation 2.5V<V IN<5.5V --- -0.05 --- %/V FB Pin Bias Current (Note 2) V FB = 1.2V --- --- 1 µA Switch Off Time --- 450 --- ns Switch VDS(ON) I SW = 0.4A --- 120 160 mV Switch Current Limit 400 500 600 mA SHDN Pin Current --- 0.1 1 µA SHDN Input Voltage High 0.9 --- --- V SHDN Input Voltage Low --- --- 0.25 V Switch Leakage Current Switch Off, V SW = 7V --- 0.01 5 µA Note 1: The G5104 are guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 2: Bias current flows into the FB pin. Block Diagram VREF BIAS SHUTDOWN LOGIC SW SHDNVCC VOUT FB ERROR COMP 1.2V en_sw GND PUMP CONTROL OC COMP DRIVER TOFF PULSE CONTROL VOUTVIN (option) VREF BIAS SHUTDOWN LOGIC SW SHDNVCC VOUT FB ERROR COMP 1.2V en_sw GND PUMP CONTROL OC COMP DRIVER TOFF PULSE CONTROL VOUTVIN (option)
Ver: 1.2 Mar 01, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G5104Global Mixed-mode Technology Inc. Typical Performance Characteristics (VCC=+3V, V SHDN =+3V, L=4.7µH, TA=25°C, unless otherwise noted.) 0.3 0.6 0.9 1.2 1.5 Input Voltage (V) Feedback Voltage (V) 0.3 0.6 0.9 1.2 1.5 -40 -20 0 20 40 60 80 100 Temperature (°C) Feedback Voltage (V) 100 200 300 400 500 600 Input Voltage (V) RDS_on (mΩ) 100 200 300 400 - 4 0 - 2 00 2 04 06 08 0 1 0 0 Temperature (°C) RDS_on (mΩ) 100 200 300 400 500 600 Input Voltage (V) Current Limit (mA) 100 200 300 400 500 600 700 800 - 4 0 - 2 0 0 2 04 06 08 0 1 0 0 Temperature (°C) Current Limit (mA) Feedback Voltage vs. Input Voltage Feedback Voltage vs. Temperature RDS_on vs. Input Voltage RDS_on vs. Temperature Current Limit vs. Input Voltage Current Limit vs. Temperature
Ver: 1.2 Mar 01, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G5104Global Mixed-mode Technology Inc. Typical Performance Characteristics (continued) 1.5 2 2.5 3 3.5 4 4.5 Input Voltage (V) Efficiency (%) VO=5V, IO=100mA 0.1 1 10 100 1000 Output Current (mA) Efficiency (%) VIN=4.2V VIN=3.6VVIN=1.7V VIN=2.4V VIN=3.0V Efficiency vs. Input Voltage Efficiency vs. Output Current Line Transient Load Transient
G5104Global Mixed-mode Technology Inc. 1 SW Switch Pin. The drain of the internal NM OS power switch. Connect this pin to inductor. 5 VCC Input Supply Pin. Bypass this pin with a capacitor as close to the device as possible. drop below 1.2V as the NMOS switch turns on. ceed 1.2V and entering the none switching mode. proper inductance value for your design. Table 1. Recommended Inductors below can calculate the peak inductor current. ripple voltage and the peak-to-peak transient voltage. that use a capacitor with a sufficient voltage rating.
Ver: 1.2 Mar 01, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G5104Global Mixed-mode Technology Inc. Diode Selection For most G5104 applications, the high switching fre- quency requires a high-speed rectifier Schottky diodes, such as the VISHAY SS12 (1A, 20V) with their low forward voltage drop and fast switching speed, are recommended. Many different manufacturers make equivalent parts, but make sure that the component is rated to operate at least 0.5A. To achieve high effi- ciency, the average current rating of the Schottky di- odes should be greater than the peak switching cur- rent. Choose a reverse breakdown voltage greater than the output voltage. Lowering Output Voltage Ripple The G5104 supplies energy to the load in bursts by ramping up the inductor current, then delivering that current to the load. To use low ESR capacitors will help minimize the output ripple voltage, but proper selection of the inductor and the output capacitor also plays a big role. If a larger inductance value or a smaller capacitance value is used, the output ripple voltage will increase because the capacitor will be slightly overcharged each burst cycle. To reduce the output ripple, increase the output capacitance value or add a 10pF feed-forward capacitor in the feedback network of the G5104 (see the circuits in the Typical Applications section). To add this small, inexpensive 10pF capacitor will greatly reduce the output voltage ripple. Typical Applications VCC SW SHDN FB GND G5104 VIN 2.7V to 4.2V VOUT up to 9 LEDs PWM Dimming RS 47µF 4.7µH VIN 2.5V to 4.2V 5V 300mA L1: MURATA LQH3C4R7M24 D1: VISHAY SS12 Boost Converter LED Driver C1: MLCC 4.7µF 6.3V C2: MLCC4.7µF 35V L1: MURATA LQH3C4R7M24 D1: MOTOROLA MBR0540 D2: RB751V RS: 60Ω 1% M1: FDN337N VCC SW SHDN FB GND G5104 47µF R2 316k 1M VCC SW SHDN FB GND G5104 VIN 2.7V to 4.2V VOUT up to 9 LEDs PWM Dimming RS 47µF 4.7µH VIN 2.5V to 4.2V 5V 300mA L1: MURATA LQH3C4R7M24 D1: VISHAY SS12 Boost Converter LED Driver C1: MLCC 4.7µF 6.3V C2: MLCC4.7µF 35V L1: MURATA LQH3C4R7M24 D1: MOTOROLA MBR0540 D2: RB751V RS: 60Ω 1% M1: FDN337N VCC SW SHDN FB GND G5104 47µF R2 316k
Ver: 1.2 Mar 01, 2005 TEL: 886-3-5788833 http://www.gmt.com.tw G5104Global Mixed-mode Technology Inc.
Package Information
Note: 1. Package body sizes exclude mold flash protrusions or gate burrs 2. Tolerance ±0.1000 mm (4mil) unless otherwise specified 3. Coplanarity: 0.1000mm 4. Dimension L is measured in gage plane DIMENSIONS IN MILLIMETER SYMBOL MIN NOM MAX A 1.00 1.10 1.30 A1 0.00 ----- 0.10 A2 0.70 0.80 0.90 b 0.35 0.40 0.50 C 0.10 0.15 0.25 D 2.70 2.90 3.10 E 1.40 1.60 1.80 H 2.60 2.80 3.00 θ1 1º 5º 9º Taping Specification PACKAGE Q’TY/BY REEL SOT-23-5 3,000 ea 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. E e D H L C b A E e D H L C b A Feed Direction Feed Direction