3A Low Dropout Voltage Regulator
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1 3A Low Dropout oltage Regulator Product Description The GS185L is a low drop voltage regulator able to provide up to 3A output current. The dropout voltage of the device is guaranteed at a maximum 1.3 at the maximum output current, decreasing at lower loads. The GS185L is pin compatible with older 3-terminal adjustable regulators, but has better performances in term of drop and output tolerance. Features Three Terminal Adjustable or Fixed Output oltages 1.5, 1.8, 2.5, 3.3 and 5 Guaranteed Output Current up to 3A Typical Dropout 1.3 (at 3A) Output Tolerance: ±2% at 25 Wind Operating Temperature Range: -4 to 125 Package Available: SOT-223,TO-252, TO-22 and TO-263 Applications Post Regulators for Switching Supply Battery-Powered Circuitry Low oltage Logic Supplies High efficiency linear regulators Adjustable power supply Block Diagram 1
2 Packages & Pin Assignments GS185LT (TO-22) GS185LM (TO-263) GS185LD (T-252) GS185LX(SOT-223) (TAB) (TAB) GS185LT-xxF GS185LM-xxF GS185LD-xxF GS185LX-xxF GND/ADJ 1 GND/ADJ 1 GND/ADJ 1 GND/ADJ 2 OUT 2 OUT 2 OUT 2 OUT 3 IN 3 IN 3 IN 3 IN Ordering Information Part Number GS185L P XX F Pb Free Code oltage Code Package Code TO-22 TO-263 TO-252 SOT-223 Output GS185LT GS185LM GS185LD GS185LX ADJ GS185LT15 GS185LM15 GS185LD15 GS185LX GS185LT18 GS185LM18 GS185LD18 GS185LX GS185LT25 GS185LM25 GS185LD25 GS185LX GS185LT33 GS185LM33 GS185LD33 GS185LX GS185LT5 GS185LM5 GS185LD5 GS185LX Adjustable ersion does not need oltage Code. Marking Information GS P/N Package Code GS P/N Package Code GS185 P GS185 P F YWLG F YWLG Lead Free Date Code GS Code oltage Code Lead Free Date Code GS Code 2
3 Absolute Maximum Ratings Parameter Symbol Maximum Ratings Units Input oltage IN 15 TO-22 3 Thermal Resistance TO θ (Junction to Case) JC /W TO SOT Thermal Resistance (Junction to Ambient) Internal Power Dissipation θ JA P D TO TO TO SOT TO-22 2 TO TO SOT Operating Junction Temperature T J -4 to 125 Storage temperature Range T STG -65 to 15 Lead Temperature ( Soldering 1sec) T LEAD 3 Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device /W W Electrical Characteristics at I OUT = ma, and T J = +25 C, unless otherwise noted. Parameter Device Conditions Min Typ Max Units Reference oltage (1) Output oltage Line Regulation (1) GS185L GS185L -1.5 GS185L -1.8 GS185L -2.5 GS185L -3.3 GS185L -5. All in=2.75, Io=1mA in=2.7 to 7, Io=1mA to 3A in=4. in=3., Io= ma to 3A in=4.3 in=3.3, Io= ma to 3A in=5. in=4., Io= ma to 3A in=5.8 in=4.8, Io= ma to 3A in=7.5 in=6.5, Io= ma to 3A I O =1mA (o+1.5) in % Load Regulation (1) All in=o+2.5, Io=mA to 3A.8.4 % Dropout oltage Δ All OUT, Δ REF = 1%, ( IN - OUT ) (1),(3) I OUT = 3A Current Limit (1) All 3 4 A Quiescent Current All IN =5 5 1 ma Ripple Rejection (1) All f =12Hz, C OUT = 25μF Tantalum, I OUT = 3A,( IN - OUT ) = 3, C ADJ =25μF 6 75 db Adjust Pin Current (1) GS185L 5 12 μa Temperature Stability.5 % Long Term Stability T A = 25 C, 1Hrs.3 1 % Note: 1. For GS185L(adjustable) ADJ = 2. For the adjustable device the minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider used to set the output voltage is selected to meet the minimum load current requirement. 3. The specification represent the minimum input/output voltage required to maintain 1% regulation. 3
4 Typical Applications in IN OUT out Cin GS185L ADJ ref 1.25 R1 Cout EN Iadj 5uA R2 OUT = REF (1+R2/R1)+I ADJ R2 Figure1. Adjustable oltage Regulator in IN OUT out GS185L-xx Cin 1uF/Tantalum GND Cout 1uF/Tantalum IGND Figure2. Fixed oltage Regulator 4
5 Typical Performance Characteristics Dropt oltage Load Regulation MINIMUM INPUT/OUTPUT DEFFERENTIAL() 2 TJ=25 C 1 TJ=15 C OUTPUT CURRENT(A) OUTPUT OLTAGE DELATION(%) TEMPERATURE( C) Temperature Stability Ripple Rejection OUTPUT OLTAGE CHANGE(%) TEMPERATURE( C) RIPPLE REJECTION (db) RIPPLE 3 P-P RIPPLE.5 P-P ( IN- OUT)³ ( IN- OUT)³ DROPOUT I OUT=I FULL LOAD 1 1k 1k 1k FREQUENCY (Hz) RIPPLE REJECTION(dB) Ripple Rejection v.s Current fr=2khz RIPPLE=.5p-p fr=12hz RIPPLE=3p-p OUTPUT CURRENT ( TO IFULLLOAD) SHORT-CIRCUIT CURRENT (A) Short-Circuit Current INPUT/OUTPUT DIFFERENTIAL () 5
6 Typical Performance Characteristics (Continue) OUTPUT OLTAGE DEIATION () LOAD CURRENT (A) Load Transient Response.3.2 C ADJ = C IN = 1μF -.2 C OUT = 1μF TANTALUM -.3 ~ ~ 3 OUT = 1 IN = 13 2 PRELOAD = 1mA 1 5 TIME (μs) OUTPUT OLTAGE DEIATION (m) INPUT DEIATION () Line Transient Response C ADJ = OUT = 1 I IN =.2A ~ ~ C 14 IN = 1μF TANTALUM C OUT = 1μF TANTALUM 1 TIME (μs) 2 POWER(W) Line Transient Response CASE TEMPERATURE( C) *AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE MINIMUM OPERATING CURRENT(mA) Minimum Operating Current TJ=15 C 6 5 TJ=25 C INPUT/OUTPUT DIFFERNTIAL() ADJUST PIN CURRENT(μA) Adjust Pin Current TEMPERATURE( C) 6
7 Package Dimension TO-22 PLASTIC PACKAGE E2 E E/2 A A1 (E) D Q ØP H1 (H1) D2 D1 CHAMFER OPTIONAL L1 E1 L e e1 b c A2 b2 Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A A A b b C D D D E E E e 2.54 (TYP).1 (TYP) e1 5.8 (TYP).2 (TYP) H L L ØP Q
8 TO-263 PLASTIC PACKAGE THERMAL PAD E E/2 L1 A c1 (E) (L1) D H D1 L2 b1 e b c E1 GAUGE PLANE L3 GAUGE PLANE L3 θ L A1 θ L A1 Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A A b b c c D D E E e 2.54 (TYP).1 (TYP) H L L L L3.25 (TYP).1 (TYP) θ
9 TO-252 PLASTIC PACKAGE L3 E b2 θ1 A c1 E1/2 E1 THERMAL PAD D L4 H D1 b1 e b L5 c L2 SEATING PLANE θ L A1 (L1) Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A A b b b C C D D E E e 2.29 (TYP).9 (TYP) H L L (TYP).18 (TYP) L2.51 (TYP).2 (TYP) L L L θ 1 1 θ
10 SOT-223 PLASTIC PACKAGE D b2 A A2 G A1 E1 E L θ e e1/2 b C e1 Dimensions SYMBOL Millimeters Inches MIN MAX MIN MAX A A A b b c D E E e 2.3 (TYP).91 (TYP) e1 4.6 (TYP).181 (TYP) L G.25 (TYP).1 (TYP) θ
11 NOTICE Information furnished is believed to be accurate and reliable. However Globaltech Semiconductor assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Globaltech Semiconductor. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information without express written approval of Globaltech Semiconductor. (Revise Date:27/11/13 ersion_1.) 11
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