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G5ELM2576 Dataheets PDF



Part Number G5ELM2576
Manufacturers GTM
Logo GTM
Description Simple Switcher 3A Step-Down Voltage Regulator
Datasheet G5ELM2576 DatasheetG5ELM2576 Datasheet (PDF)

www.DataSheet4U.com ISSUED DATE :2005/04/15 REVISED DATE : G5ELM 2576 Simple Switcher 3A Step-Down Voltage Regulator The G5ELM2576 series of regulators are monolithic integrated circuits that provide all active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3v, 5v, 12v, 15v and an adjustable output version. Requiring a minimum number of external components, these r.

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www.DataSheet4U.com ISSUED DATE :2005/04/15 REVISED DATE : G5ELM 2576 Simple Switcher 3A Step-Down Voltage Regulator The G5ELM2576 series of regulators are monolithic integrated circuits that provide all active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3v, 5v, 12v, 15v and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The G5ELM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series if inductors optimized for use with the G5ELM2576 are available from several different manufactures. This feature greatly simplifies the design of switch-mode power supplies. Other feature include a guaranteed 4% to tolerance on output voltage within specified input voltages and output load condition, and 10% on the oscillator frequency. External shutdown is included, featuring 50uA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault condition. Description Features Applications 3.3V, 5.0V, 12V, 15V and adjustable output versions Adjustable version output voltage range , 1.23V to 37V Guaranteed 3A output current Wide input voltage range Efficient pre-regulator for linear regulators Requires only 4 external components 52kHz fixed frequency oscillator TTL shutdown capability, low power standby mode High efficiency Uses readily available standard inductors Thermal shutdown and current limit protection Simple high-efficiency step-down (buck) regulator On-card switching regulators Positive to negative converter (Buck-Boost) % max over line and load conditions Package Dimensions REF. A b c D E L4 Millimeter Min. Max. 4.40 4.80 0.76 1.00 0.36 0.50 8.60 9.00 9.80 10.4 14.7 15.3 REF. L5 c1 L e L1 Ø Millimeter Min. Max. 6.20 6.60 1.25 1.45 13.25 14.25 1.70 REF. 2.60 2.89 3.71 3.96 Typical Application (Fixed Output Voltage Version) G5ELM2576-5.0 G5ELM2576 Page: 1/7 ISSUED DATE :2005/04/15 REVISED DATE : Block Diagram 3.3V, R2=17k 5.0V, R2=3.1k 12V, R2=8.84k 15V, R2=11.3k For Adjustable version, R1=open, R2=0 Absolute Maximum Ratings (Note1) Parameter Maximum Supply Voltage ON/OFF pin input Voltage Output Voltage to ground (steady state) Power dissipation Storage Temperature Maximum junction temperature Minimum ESD rating (C=100pF, R=1.5k ) Lead temperature (soldering, 10seconds) Ratings 45 -0.3 V +VIN -1 Internally Limited -65 ~ +150 +150 2k +260 Ratings -40 TJ +125 40 Unit V V V V Operating Ratings Temperature range Supply Voltage Parameter Unit V G5ELM2576-3.3 Electrical Characteristics Specifications with standard type face are for TJ=25 , and those with boldface type apply over full operating temperature range Parameter Symbol Conditions System Parameters (Note3) Test Circuit Figure 2 VIN=12V, ILOAD=0.5A Output Voltage VOUT Circuit of Figure 2 6V VIN 40V, 0.5A ILOAD 3A Output Voltage VOUT Circuit of Figure 2 Efficiency VIN=12V, ILOAD=3A Min 3.234 3.168/3.135 Typ 3.3 3.3 75 Max 3.366 3.432/3.465 Unit V V % G5ELM2576-5.0 Electrical Characteristics Specifications with standard type face are for TJ=25 , and those with boldface type apply over full operating temperature range Parameter Symbol Conditions System Parameters (Note3) Test Circuit Figure 2 VIN=12V, ILOAD=0.5A Output Voltage VOUT Circuit of Figure 2 8V VIN 40V, 0.5A ILOAD 3A Output Voltage VOUT Circuit of Figure 2 Efficiency VIN=12V, ILOAD=3A G5ELM2576 Min 4.9 4.80/4.75 Typ 5.0 5.0 77 Max 5.1 5.20/5.25 Unit V V % Page: 2/7 ISSUED DATE :2005/04/15 REVISED DATE : G5ELM2576-12 Electrical Characteristics Specifications with standard type face are for TJ=25 , and those with boldface type apply over full operating temperature range Parameter Symbol Conditions Min System Parameters (Note3) Test Circuit Figure 2 VIN=25V, ILOAD=0.5A 11.76 Output Voltage VOUT Circuit of Figure 2 15V VIN 40V, 0.5A ILOAD 3A 11.52/11.40 Output Voltage VOUT Circuit of Figure 2 Efficiency VIN=15V, ILOAD=3A Typ 12 12 88 Max 12.24 12.48/12.60 Unit V V % G5ELM2576-15 Electrical Characteristics Specifications with standard type face are for TJ=25 , and those with boldface type apply over full operating temperature range Parameter Symbol Conditions Min System Parameters (Note3) Test Circuit Figure 2 VIN=25V, ILOAD=0.5A Output Voltage VOUT 14.70 Circuit of Figure 2 18V VIN 40V, 0.5A ILOAD 3A 14.40/14.25 Output Voltage VOUT Circuit of Figure 2 Efficiency VIN=18V, ILOAD=3A Typ 15 15 88 Max 15.30 15.60/15.75 Unit V V % G5ELM2576 Electrical Characteristics Specifications with standard type face are for TJ=25 , and those with boldface type apply over fu.


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