LD29300xx 3 A, very low drop voltage regulators Features ■ Very low dropout voltage (Typ. 0.4 at 3 A) ■ Guaranteed output current up to 3 A ■ Fixed voltage with ± 1 % tolerance at 25 °C ■ Internal current and thermal limit ■ Logic controlled electronic shutdown available in PPAK D2PAK TO-220 Description The LD29300xx is a high current, high accuracy, low-dropout voltage regulator series. These regulators feature 400 mV dropout voltage and very low ground current. Designed for high current loads, these devices are also used in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes. Typical applications are in power supply switching post regulation, Series power supply for monitors, Series power supply for VCRs and TVs, Computer systems and Battery powered systems. Table 1. July 2008 P2PAK/A D2PAK/A P2PAK Device summary Part numbers Output voltages LD29300XX15 1.5 V LD29300XX18 1.8 V LD29300XX25 2.5 V LD29300XX33 3.3 V LD29300XX50 5.0 V LD29300XX80 8.0 V LD29300XX ADJ Rev 12 1/26 www.st.com 26 Contents LD29300xx Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 8 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2/26 LD29300xx Diagram 1 Diagram Figure 1. Schematic diagram for adjustable version Figure 2. Schematic diagram for fixed version * Only for version with inhibit function. 3/26 Pin configuration LD29300xx 2 Pin configuration Figure 3. Pin connections (top view) D2PAK TO-220 P2PAK * Not connected for fixed version. 4/26 P2PAK/A D2PAK/A LD29300xx Typical application 3 Typical application Figure 4. Application circuit VO = VREF (1 + R1/R2) * Only for version with inhibit function. 5/26 Maximum ratings LD29300xx 4 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit 30 (1) V VI DC input voltage IO Output current Internally limited mA PD Power dissipation Internally limited mW TSTG Storage temperature range -55 to 150 °C TOP Operating junction temperature range -40 to 125 °C 1. Above 14 V the device is automatically in shut-down. Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Table 3. Thermal data Symbol Parameter TO-220 D2PAK-P2PAK-D2PAK/A-P2PAK/A Unit RthJA Thermal resistance junction-ambient 50 60 °C/W RthJC Thermal resistance junction-case 3 3 °C/W 6/26 LD29300xx Electrical characteristics 5 Electrical characteristics Table 4. Electrical characteristics of LD29300#15 (IO = 10 mA, TJ = 25 °C, VI = 3.5 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Symbol Parameter Test conditions VI Minimum operating input voltage IO = 10mA to 3A, TJ = -40 to 125°C VO Output voltage IO = 10mA to 3A, VI = 3 to 7V TJ = -40 to 125°C ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 3 to 13V SVR Iq Isc Supply voltage rejection Quiescent current Short circuit current f = 120 Hz, VI = 3.5 ± 1V, IO = 1.5A Min. Typ. Max. 2.5 1.485 V 1.5 1.515 V 1.47 (2) 65 1.53 0.2 1.0 % 0.06 0.5 % 75 dB IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 (1), Unit mA VIL Control input logic low OFF MODE TJ = -40 to 125°C VIH Control input logic high ON MODE (1), TJ = -40 to 125°C IINH Control input current TJ = -40 to 125°C, VINH = 13V 5 eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA 60 µA A 0.8 2 V V 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design 7/26 Electrical characteristics Table 5. Symbol LD29300xx Electrical characteristics of LD29300#18 (IO = 10 mA, TJ = 25 °C, VI = 3.8 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Parameter Test conditions IO = 10mA to 3A, VI = 3 to 7.3V TJ = -40 to 125°C VO Output voltage ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 3 to 13V SVR Supply voltage rejection f = 120 Hz, VI = 3.8 ±1V, IO = 1.5A IO = 500mA, TJ = -40 to 125°C VDROP Dropout voltage Isc VIL Quiescent current Short circuit current Control input logic low Typ. Max. 1.782 1.8 1.818 (2) 62 (3) 1.836 0.2 1.0 % 0.06 0.5 % 72 dB 0.1 0.2 (3) V 0.4 0.7 IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 OFF MODE (1), (1), mA TJ = -40 to 125°C TJ = -40 to 125°C Unit V 1.764 IO = 1.5A, TJ = -40 to 125°C (3) IO = 3A, TJ = -40 to 125°C Iq Min. A 0.8 VIH Control input logic high ON MODE IINH Control input current TJ = -40 to 125°C, VINH = 13V 5 eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA 60 µA 2 V V 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design. 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99 % of its nominal value with VO + 1 V applied to VI. 8/26 LD29300xx Table 6. Symbol Electrical characteristics Electrical characteristics of LD29300#25 (IO = 10 mA, TJ = 25 °C, VI = 4.5 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Parameter Test conditions IO = 10mA to 3A, VI = 3.5 to 8V TJ = -40 to 125°C VO Output voltage ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 3 to 13V SVR Supply voltage rejection f = 120 Hz, VI = 4.5 ±1V, IO = 1.5A IO = 500mA, TJ = -40 to 125°C VDROP Dropout voltage Isc VIL Quiescent current Short circuit current Control input logic low Typ. Max. 2.475 2.5 2.525 (2) 55 (3) 2.55 0.2 1.0 % 0.06 0.5 % 70 dB 0.1 0.2 (3) V 0.4 0.7 IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 OFF MODE (1), (1), mA TJ = -40 to 125°C VIH Control input logic high ON MODE TJ = -40 to 125°C IINH Control input current TJ = -40 to 125°C, VINH = 13V eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA Unit V 2.45 IO = 1.5A, TJ = -40 to 125°C (3) IO = 3A, TJ = -40 to 125°C Iq Min. µA A 0.8 2 V V 5 100 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design. 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99 % of its nominal value with VO + 1 V applied to VI. 9/26 Electrical characteristics Table 7. Symbol LD29300xx Electrical characteristics of LD29300#33 (IO = 10 mA, TJ = 25 °C, VI = 5.3 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Parameter Test conditions IO = 10mA to 3A, VI = 4.3 to 8.8V TJ = -40 to 125°C VO Output voltage ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 4.3 to 13V SVR Supply voltage rejection f = 120 Hz, VI = 5.3 ±1V, IO = 1.5A IO = 500mA, TJ = -40 to 125°C VDROP Dropout voltage Isc VIL Quiescent current Short circuit current Control input logic low Typ. Max. 3.267 3.3 3.333 (2) 52 (3) 3.366 0.2 1.0 % 0.06 0.5 % 67 dB 0.1 0.2 (3) V 0.4 0.7 IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 OFF MODE (1), (1), mA TJ = -40 to 125°C VIH Control input logic high ON MODE TJ = -40 to 125°C IINH Control input current TJ = -40 to 125°C, VINH = 13V eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA Unit V 3.234 IO = 1.5A, TJ = -40 to 125°C (3) IO = 3A, TJ = -40 to 125°C Iq Min. µA A 0.8 2 V V 5 132 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design. 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99 % of its nominal value with VO + 1 V applied to VI. 10/26 LD29300xx Table 8. Symbol Electrical characteristics Electrical characteristics of LD29300#50 (IO = 10 mA, TJ = 25 °C, VI = 7 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Parameter Test conditions IO = 10mA to 3A, VI = 6 to 10.5V TJ = -40 to 125°C VO Output voltage ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 6 to 13V SVR Supply voltage rejection f = 120 Hz, VI = 7 ±1V, IO = 1.5A IO = 500mA, TJ = -40 to 125°C VDROP Dropout voltage Isc VIL Quiescent current Short circuit current Control input logic low Typ. Max. 4.95 5 5.05 (2) 49 (3) 5.1 0.2 1.0 % 0.06 0.5 % 64 dB 0.1 0.2 (3) V 0.4 0.7 IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 OFF MODE (1), (1), Unit V 4.9 IO = 1.5A, TJ = -40 to 125°C (3) IO = 3A, TJ = -40 to 125°C Iq Min. mA TJ = -40 to 125°C VIH Control input logic high ON MODE TJ = -40 to 125°C IINH Control input current TJ = -40 to 125°C, VINH = 13V eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA µA A 0.8 2 V V 5 200 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design. 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99 % of its nominal value with VO + 1 V applied to VI. 11/26 Electrical characteristics Table 9. Symbol LD29300xx Electrical characteristics of LD29300#80 (IO = 10 mA, TJ = 25 °C, VI = 10 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF, unless otherwise specified) Parameter Test conditions IO = 10mA to 3A, VI = 9 to 13V TJ = -40 to 125°C VO Output voltage ΔVO Load regulation IO = 10mA to 3A ΔVO Line regulation VI = 9 to 13V SVR Supply voltage rejection VDROP Dropout voltage Isc VIL Quiescent current Short circuit current Control input logic low Max. 7.92 8 8.08 (2) 45 (3) 8.16 0.2 1.0 % 0.06 0.5 % 59 dB 0.1 0.2 (3) V 0.4 0.7 IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 VI - VO = 5.5V 4.5 OFF MODE (1), (1), Unit V IO = 1.5A, TJ = -40 to 125°C (3) IO = 3A, TJ = -40 to 125°C Iq Typ. 7.84 f = 120 Hz, VI = 9 ±1V, IO = 1.5A IO = 500mA, TJ = -40 to 125°C Min. mA TJ = -40 to 125°C VIH Control input logic high ON MODE TJ = -40 to 125°C IINH Control input current TJ = -40 to 125°C, VINH = 13V eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA µA A 0.8 2 V V 5 320 10 µA µVRMS 1. Only for version with Inhibit function. 2. Guaranteed by design. 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99 % of its nominal value with VO + 1 V applied to VI. 12/26 LD29300xx Table 10. Symbol Electrical characteristics Electrical characteristics of LD29300#ADJ (IO = 10 mA, TJ = 25 °C, VI = 3.23 V, VINH = 2 V (1), CI = 330 nF, CO = 10 µF adjust pin tied to output pin) Parameter Test conditions Min. Typ. Max. Unit Minimum operating input voltage IO = 10mA to 3A, TJ = -40 to 125°C ΔVO Load regulation IO = 10mA to 3A 0.2 1.0 % ΔVO Line regulation VI = 2.5 V to 13V 0.06 0.5 % +1% Reference voltage IO = 10mA to 3A, VI = 2.5 to 4.5V TJ = -40 to 125°C (2) 1.23 VREF SVR Supply voltage rejection VI Iq Quiescent current f = 120 Hz, VI = 3.23 ±1V, IO = 1.5A (3) -1% V V -2% 65 +2% 75 dB IO = 1.5A, TJ = -40 to 125°C 20 50 IO = 3A, TJ = -40 to 125°C 45 100 VI = 13V, VINH = GND, TJ = -40 to 125°C 130 180 µA 1 µA TJ = -40 to 125°C Isc Short circuit current VI - VO = 5.5V VIL Control input logic low OFF MODE (1),TJ = -40 to 125°C (1), mA (3) Adjust pin current IADJ 2.5 4.5 TJ = -40 to 125°C A 0.8 VIH Control input logic high ON MODE 2 IINH Control input current TJ = -40 to 125°C, VINH = 13V 5 eN Output noise voltage BP = 10Hz to 100kHz, IO = 100mA 50 V V 10 µA µVRMS 1. Only for version with Inhibit function. 2. Reference voltage is measured between output and GND pin, with ADJ PIN tied to VOUT. 3. Guaranteed by design. 13/26 Typical characteristics LD29300xx 6 Typical characteristics Figure 5. Output voltage vs temperature Figure 6. Dropout voltage vs temperature Figure 7. Dropout voltage vs output current Figure 8. Quiescent current vs output current Figure 9. Quiescent current vs output current Figure 10. Quiescent current vs supply voltage 14/26 LD29300xx Figure 11. Quiescent current vs temperature Typical characteristics Figure 12. Quiescent current vs temperature Figure 13. Short circuit current vs temperature Figure 14. Supply voltage rejection vs temperature Figure 15. Stability vs CO Figure 16. Line transient VI=3.5 to 5.5V, ILOAD=10mA, VO=2.5V, CO=10µF 15/26 Typical characteristics Figure 17. Load transient VI=4.5V, IO=10mA to 3A, VO=2.5V, CO=47µF 16/26 LD29300xx LD29300xx 7 Package mechanical data Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 17/26 Package mechanical data LD29300xx TO-220 (A type) mechanical data Dim. mm. Min. Typ. inch. Max. Min. Typ. Max. A 4.40 4.60 0.173 0.181 b 0.61 0.88 0.024 0.035 b1 1.15 1.70 0.045 0.067 c 0.49 0.70 0.019 0.028 D 15.25 15.75 0.600 0.620 E 10.0 10.40 0.394 0.409 e 2.4 2.7 0.094 0.106 e1 4.95 5.15 0.195 0.203 F 1.23 1.32 0.048 0.052 H1 6.2 6.6 0.244 0.260 J1 2.40 2.72 0.094 0.107 L 13.0 14.0 0.512 0.551 L1 3.5 3.93 0.138 0.155 L20 16.4 0.646 L30 28.9 1.138 φP 3.75 3.85 0.148 0.152 Q 2.65 2.95 0.104 0.116 0015988/N 18/26 LD29300xx Package mechanical data D2PAK mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 4.4 4.6 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.027 0.036 B2 1.14 1.7 0.044 0.067 C 0.45 0.6 0.017 0.023 C2 1.23 1.36 0.048 0.053 D 8.95 9.35 0.352 D1 E 8 10 E1 G 0.368 0.315 10.4 0.393 8.5 0.409 0.335 4.88 5.28 0.192 0.208 L 15 15.85 0.590 0.624 L2 1.27 1.4 0.050 0.055 L3 1.4 1.75 0.055 0.068 M 2.4 3.2 0.094 0.126 8° 0° R V2 0.4 0° 0.016 8° P011P6G 19/26 Package mechanical data LD29300xx D2PAK/A mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 4.40 4.60 0.173 0.181 A1 2.49 2.69 0.098 0.106 A2 0.03 0.23 0.001 0.009 B 0.7 0.93 0.028 0.037 B1 0.8 1.3 0.031 0.051 B2 1.14 1.7 0.045 0.067 C 0.45 0.60 0.018 0.024 C2 1.23 1.36 0.048 0.054 D 8.95 9.35 0.352 D1 E 8 10 10.4 0.394 4.88 5.28 0.192 0.208 0.624 E1 G 0.368 0.315 8.5 0.409 0.335 L 15 15.85 0.591 L2 1.27 1.4 0.050 0.055 M 2.4 3.2 0.094 0.126 8° 0° R V2 0.4 0° 0.016 8° 7106164/D 20/26 LD29300xx Package mechanical data P2PAK mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 4.30 4.80 0.169 0.188 A1 2.40 2.80 0.094 0.110 A2 0.03 0.23 0.001 0.009 b 0.80 1.05 0.031 0.041 c 0.45 0.60 0.017 0.023 c2 1.17 1.37 0.046 0.053 D 8.95 9.35 0.352 0.368 10.40 0.393 3.60 0.126 D2 E 8 10.00 E1 e 0.315 8.5 3.20 0.409 0.334 0.409 0.142 e1 6.60 7.00 0.260 0.275 L 13.70 14.50 0.539 0.571 L2 1.25 1.40 0.049 0.055 L3 0.90 1.70 0.035 0.067 L5 1.55 2.40 0.061 0.094 8° 0° R V2 0.40 0° 0.016 8° 7226255/B 21/26 Package mechanical data LD29300xx P2PAK/A mechanical data mm. inch. Dim. Min. Typ. Max. Min. Typ. Max. A 4.30 4.80 0.169 0.188 A2 0.03 0.23 0.001 0.009 C 1.17 1.37 0.046 0.053 D 2.40 2.80 0.094 0.110 D1 8.95 9.35 0.352 0.368 E 0.45 0.60 0.017 0.023 F 0.80 1.05 0.031 0.041 G 3.20 3.60 0.126 0.142 G1 6.60 7.00 0.260 0.275 H1 8.5 0.334 0.409 H2 10.00 10.40 0.393 0.409 L 15 15.85 0.590 0.624 L1 8 0.315 L2 1.27 1.40 0.050 0.055 M 2.4 3.2 0.094 0.126 8° 0° R V2 0.40 0° 0.016 8° 7157127/A 22/26 LD29300xx Package mechanical data Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data mm. inch. Dim. Min. Typ. A Max. Min. Typ. 180 13.0 7.086 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 10.50 10.6 10.70 0.413 0.417 0.421 Bo 15.70 15.80 15.90 0.618 0.622 0.626 Ko 4.80 4.90 5.00 0.189 0.193 0.197 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 23/26 Order codes LD29300xx 8 Order codes Table 11. Order codes Packages D2 TO-220 2 PAK D PAK/A 2 P PAK (1) Output voltage 2 P PAK/A LD29300P2T15R LD29300D2T18R LD29300D2M18R LD29300P2T18R 1.5 V LD29300P2M18R LD29300D2M25R LD29300V33 LD29300V50 LD29300D2T50R (1) 2.5 V LD29300D2M33R LD29300P2T33R LD29300P2M33R 3.3 V LD29300D2M50R LD29300P2T50R LD29300P2M50R 5.0 V LD29300P2T80R LD29300P2TR 1. Available on request 24/26 1.8 V 8.0 V LD29300P2MTR (1) ADJ LD29300xx Revision history 9 Revision history Table 12. Document revision history Date Revision Changes 21-Oct-2005 7 Order codes updated. 10-Apr-2007 8 Order codes updated. 11-May-2007 9 Order codes updated. 08-Jun-2007 10 Order codes updated. 03-Apr-2008 11 Modified: Table 11 on page 24. 11-Jul-2008 12 Modified: Table 11 on page 24. 25/26 LD29300xx Please Read Carefully: Information in this document is provided solely in connection with ST products. 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