ST2L05 VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATOR ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ VO1 = 1.5, 1.8, 2.5, 2.8, 3.0, 3.3V FIXED VO2 = 1.5, 1.8, 2.5, 2.8, 3.0, 3.3V FIXED OR ADJUSTABLE FROM 1.25 TO VI - VDROP GUARANTEED OUTPUT1 CURRENT: 1A GUARANTEED OUTPUT2 CURRENT: 1A ± 2% OUTPUT TOLERANCE (AT 25°C) ± 3% OUTPUT TOLERANCE OVER TEMP. TYPICAL DROPOUT 1.1V (IO1 = IO2 = 1A) INTERNAL POWER AND THERMAL LIMIT STABLE WITH LOW ESR OUTPUT CAPACITOR OPERATING TEMPERATURE RANGE: 0°C TO 125°C VERY LOW QUIESCENT CURRENT: 7mA MAX OVER TEMP. AVAILABLE IN PPAK, SPAK AND IN DFN 5x6mm PACKAGE DESCRIPTION Specifically designed for data storage applications, this device integrates two voltage regulators, each one able to supply 1A and it is assembled in PPAK, in SPAK and in a new 8-PIN surface mounting package named DFN 5x6mm at 8 pins. The first regulator block supplies 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V depending on the SPAK-5L PPAK DFN chosen version. The second one may be fixed to the same values or adjustable from 1.25V to VI VDROP that could power several kind of different micro-controllers. Both outputs are current limited and over temperature protected. It is worth underlining the very good thermal performance of the packages SPAK and DFN with only 2°C/W of Thermal Resistance Junction to Case. Applications are HARD DISK, CD/DVD-ROM, CD/ DVD-R/RW, COMBO (DVD-ROM+CD-R/RW). BLOCK DIAGRAM OF FIXED/ADJ VERSION October 2003 1/24 ST2L05 BLOCK DIAGRAM OF FIXED/FIXED VERSION 2/24 ST2L05 ORDERING CODES VO1 VO2 SPAK PPAK DFN SHIPMENT (1) 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.8 V 1.8 V 1.8 V 1.8 V 1.8 V 1.8 V 1.8 V 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V 3.0 V 3.0 V 3.0 V 3.0 V 3.0 V 3.0 V 3.0 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ 1.5 V 1.8 V 2.5 V 2.8 V 3.0 V 3.3 V ADJ ST2L05R1515K5 (*) ST2L05R1518K5 (*) ST2L05R1525K5 (*) ST2L05R1528K5 (*) ST2L05R1530K5 (*) ST2L05R1533K5 (*) ST2L05R1500K5 (*) ST2L05R1815K5 (*) ST2L05R1818K5 (*) ST2L05R1825K5 (*) ST2L05R1828K5 (*) ST2L05R1830K5 (*) ST2L05R1833K5 (*) ST2L05R1800K5 (*) ST2L05R2515K5 (*) ST2L05R2518K5 (*) ST2L05R2525K5 (*) ST2L05R2528K5 (*) ST2L05R2530K5 (*) ST2L05R2533K5 (*) ST2L05R2500K5 (*) ST2L05R2815K5 (*) ST2L05R2818K5 (*) ST2L05R2825K5 (*) ST2L05R2828K5 (*) ST2L05R2830K5 (*) ST2L05R2833K5 (*) ST2L05R2800K5 (*) ST2L05R3015K5 (*) ST2L05R3018K5 (*) ST2L05R3025K5 (*) ST2L05R3028K5 (*) ST2L05R3030K5 (*) ST2L05R3033K5 (*) ST2L05R3000K5 (*) ST2L05R3315K5 (*) ST2L05R3318K5 (*) ST2L05R3325K5 (*) ST2L05R3328K5 (*) ST2L05R3330K5 (*) ST2L05R3333K5 (*) ST2L05R3300K5 ST2L05R1515PT (*) ST2L05R1518PT (*) ST2L05R1525PT (*) ST2L05R1528PT (*) ST2L05R1530PT (*) ST2L05R1533PT (*) ST2L05R1500PT ST2L05R1815PT (*) ST2L05R1818PT (*) ST2L05R1825PT ST2L05R1828PT (*) ST2L05R1830PT (*) ST2L05R1833PT (*) ST2L05R1800PT ST2L05R2515PT (*) ST2L05R2518PT (*) ST2L05R2525PT (*) ST2L05R2528PT (*) ST2L05R2530PT (*) ST2L05R2533PT (*) ST2L05R2500PT ST2L05R2815PT (*) ST2L05R2818PT (*) ST2L05R2825PT (*) ST2L05R2828PT (*) ST2L05R2830PT (*) ST2L05R2833PT (*) ST2L05R2800PT (*) ST2L05R3015PT (*) ST2L05R3018PT (*) ST2L05R3025PT (*) ST2L05R3028PT (*) ST2L05R3030PT (*) ST2L05R3033PT (*) ST2L05R3000PT (*) ST2L05R3315PT (*) ST2L05R3318PT ST2L05R3325PT ST2L05R3328PT (*) ST2L05R3330PT (*) ST2L05R3333PT (*) ST2L05R3300PT ST2L05R1515PS (*) ST2L05R1518PS (*) ST2L05R1525PS (*) ST2L05R1528PS (*) ST2L05R1530PS (*) ST2L05R1533PS (*) ST2L05R1500PS (*) ST2L05R1815PS (*) ST2L05R1818PS (*) ST2L05R1825PS (*) ST2L05R1828PS (*) ST2L05R1830PS (*) ST2L05R1833PS (*) ST2L05R1800PS (*) ST2L05R2515PS (*) ST2L05R2518PS (*) ST2L05R2525PS (*) ST2L05R2528PS (*) ST2L05R2530PS (*) ST2L05R2533PS (*) ST2L05R2500PS (*) ST2L05R2815PS (*) ST2L05R2818PS (*) ST2L05R2825PS (*) ST2L05R2828PS (*) ST2L05R2830PS (*) ST2L05R2833PS (*) ST2L05R2800PS (*) ST2L05R3015PS (*) ST2L05R3018PS (*) ST2L05R3025PS (*) ST2L05R3028PS (*) ST2L05R3030PS (*) ST2L05R3033PS (*) ST2L05R3000PS (*) ST2L05R3315PS (*) ST2L05R3318PS (*) ST2L05R3325PS ST2L05R3328PS (*) ST2L05R3330PS (*) ST2L05R3333PS (*) ST2L05R3300PS Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel (*) Available on request. (1) For Tube Shipment, change "R" with "-" in the relevant ordering code, DFN is available only in Tape & Reel. 3/24 ST2L05 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit 10 V VI Operating Input Voltage PD Power Dissipation Internally Limited Short Circuit Output Current - 3.3 V and adjustable output Internally Limited IOSH Operating Junction Temperature Range Top (*) Tstg Storage Temperature Range Lead Temperature (Soldering) 10 Sec. TLEAD 0 to 150 °C -65 to 150 °C 260 °C (*) Storage temperatures > 125°C are only acceptable if the Dual Regulator is soldered to a PCBA. Absolute Maximum Ratings are those beyond which damage to the device may occur. Functional operation under these condition is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VI ∆VI tRISE tFALL Value Unit Input Voltage Parameter 4.5 to 7 V Input Voltage Ripple ± 0.15 V Input Voltage Rise Time (from 10% to 90%) ≥1 µsec Input Voltage Fall Time (from 10% to 90%) ≥1 µsec THERMAL DATA Symbol Parameter SPAK Rthj-case Thermal Resistance Junction-case 2 Rthj-amb Thermal Resistance Junction-ambient 26 DFN PPAK Unit 2 8 °C/W 36 100 °C/W CONNECTION DIAGRAM (top view for PPAK and SPAK, top through view for DFN8) PPAK SPAK DFN8 PIN DESCRIPTION 4/24 PPAK/SPAK DFN Symbol Name and Function 1 3 VI 2 3 4 4 8 5 ADJ/N.C. GND VO2 5 7 VO1 Fixed output voltage: bypass with a 4.7µF capacitor to GND 1, 2, 6 NC Not Connected Bypass with a 4.7µF capacitor to GND Resistor divider connection/Not Connected Ground Adjustable output voltage: bypass with a 4.7µF capacitor to GND ST2L05 APPLICATION CIRCUIT OF FIXED/FIXED VERSION APPLICATION CIRCUIT OF FIXED/ADJ VERSION NOTE: The regulator is designed to be stable with either tantalum or ceramic capacitors on the input and outputs. The expected values of the input and output X7R ceramic capacitors are from 4.7µF to 22µF with 4.7µF typical. The input capacitor must be connected within 0.5 inches of the VI terminal. The output capacitors must also be connected within 0.5 inches of output pins VO1 and VO2. There is no upper limit to the size of the input capacitor (for more details see the Application Hints section). NOTE: In the Fixed/ADJ version, the adjustable output voltage VO2 is designed to support output voltages from 1.25V to VI - VDROP. The adjustable output voltage VO2 is set by a resistor divider connected between VO2 (pin4) and Ground (pin3) with its centre tap connected to VO2 ADJ (pin2). The voltage divider resistors are: R1 connected to VO2 and VO2 ADJ and R2 connected to VO2 ADJ and GND. VO2 is determined by VREF, R1, R2, and IADJ as follows (for more details see the Application Hints section): VO2 = VREF (1+R1/R2) + IADJR1 5/24 ST2L05 OUTPUT1 AND OUTPUT2 DUAL SPECIFICATION (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, C O1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit IGND Quiescent Current (Fixed/ADJ) VI ≤ 7V IOUT1,2 = 5mA to 1A 5 mA IGND Quiescent Current (Fixed/Fixed) VI ≤ 7V IOUT1,2 = 5mA to 1A 7 mA IST TSHDN Total Current Limit IO1 + IO2 2 Thermal Shutdown DTSHDN Thermal Shutdown Hysteresis A 175 °C 5 °C ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 1.5V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Output Voltage 1.5V VO Output Voltage 1.5V ∆VO Line Regulation ∆VO Load Regulation Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Dropout Voltage ∆VO = -1% IO = 1A IS Current Limit eN SVR Typ. Max. Unit 1.47 1.5 1.53 V 1.455 1.5 1.545 V 15 mV 12 mV VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A VD IOMIN Min. VI = 5.5V 1.3 1 Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 0 T = 25°C VI = 5V V A 0.003 mA % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO = 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO TJ = 125°C NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 6/24 0.1 %/W 0.5 % 0.3 % ST2L05 ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 1.8V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Output Voltage 1.8V VO Output Voltage 1.8V ∆VO Line Regulation ∆VO Load Regulation VD IS IOMIN eN SVR Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Min. Typ. Max. Unit 1.764 1.8 1.836 V 1.746 1.8 1.854 V 15 mV 12 mV 1.3 V VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V 1 A Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 0 T = 25°C VI = 5V 0.003 mA % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO = 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO TJ = 125°C 0.1 %/W 0.5 % 0.3 % NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 7/24 ST2L05 ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 2.5V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter Test Conditions VO Output Voltage 2.5V VO Output Voltage 2.5V ∆VO Line Regulation ∆VO Load Regulation VD IS IOMIN eN SVR IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Min. Typ. Max. Unit 2.45 2.5 2.55 V 2.425 2.5 2.575 V 15 mV VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V T = 25°C VI = 5V mV V 0 mA 1 A Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 12 1.3 0.003 % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO= 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO S Long Term Stability (1000Hrs) (4) TJ = 125°C NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 8/24 0.1 %/W 0.5 % 0.3 % ST2L05 ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 2.8V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Output Voltage 2.8V VO Output Voltage 2.8V ∆VO Line Regulation ∆VO Load Regulation VD IS IOMIN eN SVR Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Min. Typ. Max. Unit 2.744 2.8 2.856 V 2.716 2.8 2.884 V 15 mV 12 mV 1.3 V VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V 1 A Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 0 T = 25°C VI = 5V 0.003 mA % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO= 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO TJ = 125°C 0.1 %/W 0.5 % 0.3 % NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 9/24 ST2L05 ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 3.0V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Output Voltage 3.0V VO Output Voltage 3.0V ∆VO Line Regulation ∆VO Load Regulation VD IS IOMIN eN SVR Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Min. Typ. Max. Unit 2.94 3.0 3.06 V 2.91 3.0 3.09 V 15 mV 12 mV 1.3 V VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V 1 A Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 0 T = 25°C VI = 5V 0.003 mA % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO= 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO TJ = 125°C NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 10/24 0.1 %/W 0.5 % 0.3 % ST2L05 ELECTRICAL CHARACTERISTICS OF FIXED OUTPUT 3.3V (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Output Voltage 3.3V VO Output Voltage 3.3V ∆VO Line Regulation ∆VO Load Regulation VD IS IOMIN eN SVR Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Min. Typ. Max. Unit 3.234 3.3 3.366 V 3.2 3.3 3.4 V 15 mV 12 mV 1.3 V VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V 1 A Min Output Current for regulation RMS Output Noise (1)(4) Supply Voltage Rejection (2)(4) Transient Response Change of VO with step 0 T = 25°C VI = 5V 0.003 mA % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO= 1mA to 1A, tr ≥ 1µs 10(5) % Transient Response Short Circuit Removal Response (3)(4) VI = 5V, IO = short to IO = 10mA 20(5) % TR Thermal Regulation (4) IO = 1A, tPULSE = 30ms S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) ∆VO/∆IO load change(3)(4) ∆VO1/∆VI Transient Response Change of VOUT1 with % application of VI (3)(4) ∆VO/∆IO TJ = 125°C 0.1 %/W 0.5 % 0.3 % NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. 11/24 ST2L05 ELECTRICAL CHARACTERISTICS OF ADJUSTABLE OUTPUT (IO = 10mA to 1A, TJ = 0 to 125°C, VI = 4.5V to 7V, CI = 4.7µF, CO1 = CO2 = 4.7µF, otherwise specified) Symbol Parameter VO Reference Voltage VO Reference Voltage ∆VO2 Line Regulation 2 ∆VO2 Load Regulation 2 VD IS Test Conditions IO = 5mA to 1A, VI = 4.75 to 5.25V, T = 25°C IO = 5mA to 1A, VI = 4.75 to 5.25V Dropout Voltage ∆VO = -1% IO = 1A Current Limit VI = 5.5V IADJ Adjustable Current (sinking) Adjustable Current Change IO = 10mA to 1A Min Output Current for regulation T = 25°C RMS Output Noise (1)(4) eN SVR Supply Voltage Rejection (2)(4) ∆VO2/∆IO2 Transient Response Change of VO1 with step load change(3)(4) ∆VO2/∆VI Transient Response Change of VOUT1 with Typ. Max. Unit 1.225 1.25 1.275 V 1.212 1.25 1.287 V 0.35 % 0.4 % 1.3 V VI = 4.75 to 5.25V, IO = 5mA to 1A VI = 4.75V, IO = 10mA to 1A I∆ADJ IOMIN Min. VI = 5V 1 A 1 µA 200 nA 2 mA 0.003 % 60 dB VI = 5V, IO = 1mA to 1A, tr ≥ 1µs 10(5) VI = 5V, IO = 1A to 1mA, tf ≥ 1µs 10(5) 0 to 5V step input, IO= 1mA to 1A, tr ≥ 1µs 10(5) % VI = 5V, IO = short to IO = 10mA 20(5) % % application of VI (3)(4) ∆VO2/∆IO2 Transient Response Short Circuit Removal Response (3)(4) TR Thermal Regulation (4) S Temperature Stability (4) S Long Term Stability (4) (1000Hrs) IO = 1A, tPULSE = 30ms TJ = 125°C 0.1 %/W 0.5 % 0.3 % NOTE 1: Bandwidth of 10 Hz to 10KHz. NOTE 2: 120Hz input ripple. NOTE 3: CI = 20µF, C1 and CO2 = 10µF. CI, CO1 and CO2 are all X7R ceramic capacitors. NOTE 4: Guaranteed by design, not tested in production. NOTE 5: % undershoot or overshoot of VO. APPLICATION HINTS EXTERNAL CAPACITORS Like any low-dropout regulator, the ST2L05 requires external capacitors for stability. We suggest soldering both capacitors as close as possible to the relative pins (1, 4 and 5). INPUT CAPACITOR An input capacitor, whose value is, at least, 2.2µF is required; the amount of the input capacitance can be increased without limit if a good quality tantalum or aluminium capacitor is used.SMD X7R or Y5V ceramic multilayer capacitors could not ensure stability in any condition because of their variable characteristics with Frequency and Temperature; the use of this capacitor is strictly related to the use of the output capacitors. For more details read the “OUTPUT CAPACITOR SECTION”.The input capacitor must be located at a distance of not more than 0.5" from the input pin of the device and returned to a clean analog ground. OUTPUT CAPACITOR The ST2L05 is designed specifically to work with Ceramic and Tantalum capacitors.Special care must be taken when a Ceramic multilayer capacitor is used.Due to their characteristics they can sometimes have an ESR value lower than the minimum required by the ST2L05 and their relatively large capacitance can 12/24 ST2L05 change a lot depending on the ambient temperature.The test results of the ST2L05 stability using multilayer ceramic capacitors show that a minimum value of 2.2µF is needed for both regulators. This value can be increased without limit if the input capacitor value is major or equal to 4.7µF, and up to 10µF if the input capacitor is minor than 4.7µF.Surface-mountable solid tantalum capacitors offer a good combination of small physical size for the capacitance value and ESR in the range needed by the ST2L05. The test results show good stability for both outputs with values of at least 1µF. The value can be increased without limit for even better performance such as transient response and noise. IMPORTANT: The output capacitor must maintain its ESR in the stable region over the full operating temperature to assure stability. More over, capacitor tolerance and variations due to temperature must be considered to assure that the minimum amount of capacitance is provided at all times. For this reason, when a Ceramic multilayer capacitor is used, the better choice for temperature coefficient is the X7R type, which holds the capacitance within ±15%. The output capacitor should be located not more than 0.5" from the output pins of the device and returned to a clean analog ground. ADJUSTABLE REGULATOR The ST2L05 has a 1.25V reference voltage between the output and the adjust pins (respectively pin 4 and 2). When a resistor R1 is placed between these two terminals, a constant current flows through R1 and down to R2 to set the overall (VO2 to GND) output voltage. Minimum load current is 2mA max in all temperature conditions. APPLICATION CIRCUIT VO = VREF(1+R 1/R 2)+IADJR1 IADJ is very small (typically 35µA) and constant: in the VO calculation it can be ignored. 13/24 ST2L05 TYPICAL CHARACTERISTICS Figure 1 : Reference Voltage vs Temperature Figure 4 : Reference Voltage vs Input Voltage Figure 2 : Reference Line Regulation vs Temperature Figure 5 : Dropout Voltage vs Temperature (Adjustable Output) Figure 3 : Reference Load Regulation vs Temperature Figure 6 : Dropout Voltage vs Input Voltage (Adjustable Output) 14/24 ST2L05 Figure 7 : Minimum Load Current vs Temperature (Adjustable Output) Figure 10 : Line Regulation vs Temperature Figure 8 : Adjust Pin Current vs Temperature (Adjustable Output) Figure 11 : Load Regulation vs Temperature Figure 9 : Output Voltage vs Temperature Figure 12 : Output Voltage vs Input Voltage 15/24 ST2L05 Figure 13 : Dropout Voltage vs Temperature (Fixed Output) Figure 16 : Supply Voltage Rejection vs Frequency Figure 14 : Dropout Voltage vs Input Voltage Figure 17 : Quiescent Current vs Temperature (Fixed/ADJ Version) Figure 15 : Supply Voltage Rejection vs Temperature Figure 18 : Quiescent Current vs Temperature (Fixed/Fixed Version) 16/24 ST2L05 Figure 19 : Short Circuit Removal Response Figure 22 : Change of VO with Step Load Change VI=5V, I O=short circuit to 10mA, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C VI=5V, I O=1A to 1mA, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tFALL=1µs Figure 20 : Change of VO with Step Load Change Figure 23 : Short Circuit Removal Response VI=5V, I O=1mA to 1A, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C VI=5V, I O=short circuit to 10mA, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C Figure 21 : Change of VO with Step Load Change Figure 24 : Change of VO with Step Load Change VI=5V, I O=1mA to 1A, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tRISE=1µs VI=5V, I O=1mA to 1A, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tRISE=1µs 17/24 ST2L05 Figure 25 : Change of VO with Step Load Change Figure 27 : Start-Up Transient VI=5V, I O=1mA to 1A, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tRISE=tFALL =1µs VI=0 to 5V, I O=1mA, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tRISE ≤ 1µs Figure 26 : Change of VO with Step Load Change Figure 28 : Start-Up Transient VI=5V, I O=1A to 1mA, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tFALL=1µs VI=0 to 5V, I O=1A, CO=10µF, CI=22µF all ceramic X5R, TJ=25°C, tRISE ≤ 1µs 18/24 ST2L05 SPAK-5L MECHANICAL DATA DIM. mm. MIN. A 1.78 A2 0.03 C TYP inch MAX. MIN. 2.03 0.070 0.13 0.001 0.25 C1 TYP. MAX. 0.080 0.005 0.010 0.25 0.010 D 1.02 1.27 0.040 0.050 D1 7.87 8.13 0.310 0.320 F 0.63 0.79 0.025 0.031 G 1.69 0.067 G1 6.8 0.268 H1 5.59 0.220 H2 9.27 9.52 0.365 0.375 H3 8.89 9.14 0.350 0.360 L 10.41 10.67 0.410 L1 7.49 0.420 0.295 L2 8.89 9.14 0.350 0.360 M 0.79 1.04 0.031 0.041 6˚ 3˚ N V 0.25 3˚ 0.010 6˚ PO13F1/B 19/24 ST2L05 PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.4 0.6 0.015 0.023 B2 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.023 C2 0.48 0.6 0.019 0.023 D 6 6.2 0.236 0.244 E 6.4 6.6 0.252 0.260 G 4.9 5.25 0.193 0.206 G1 2.38 2.7 0.093 0.106 H 9.35 10.1 0.368 0.397 L2 L4 0.8 0.6 0.031 1 0.023 0.039 0078180-B 20/24 ST2L05 DFN8 (5x6) MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. 0.80 0.90 1.00 0.032 0.035 0.039 A1 0.02 0.005 0.001 0.002 A3 0.20 A b 0.35 D D2 0.47 0.014 5.00 4.15 E E2 0.40 0.008 4.2 3.6 4.25 0.163 0.165 3.65 0.140 0.142 1.27 0.049 F 1.99 0.078 G 2.20 0.086 H 0.40 0.015 I 0.219 0.0086 0.70 0.167 0.236 e L 0.018 0.197 6.00 3.55 0.016 0.90 0.028 0.144 0.035 7286463/B 21/24 ST2L05 Tape & Reel SPAK-xL MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 180 13.0 13.2 MAX. 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 22/24 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 9.70 9.80 9.90 0.382 0.386 0.390 Bo 10.85 10.95 11.05 0.423 0.427 0.431 Ko 2.30 2.40 2.50 0.090 0.094 0.098 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 11.9 12.0 12.1 0.468 0.472 0.476 ST2L05 Tape & Reel DPAK-PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 23/24 ST2L05 Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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