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LD29150XXXX LD29150XX
1.5 A, very low drop voltage regulators
Features

Very low dropout voltage (typ. 0.4 at 1.5 A) Guaranteed output current up to 1.5 A Fixed and adjustable output voltage ( 1 % at 25 C) Internal current and thermal limit Logic controlled electronic shutdown available in PPAK and P2PAK
PPAK DPAK
Description
The LD29150 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.
Device summary
Order codes Output voltage DPAK PPAK LD29150PT15R LD29150PT18R LD29150PT25R LD29150PT33R LD29150PT50R LD29150PTR 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V ADJ LD29150DT15R LD29150DT18R LD29150DT25R LD29150DT33R LD29150DT50R
Part numbers LD29150XX15 LD29150XX18 LD29150XX25 LD29150XX33 LD29150XX50 LD29150XX
February 2008
Rev 13
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Contents
LD29150XXXX - LD29150xx
Contents
1 2 3 4 5 6 7 8 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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Diagram
1
Figure 1.
Diagram
Schematic diagram for adjustable version
Figure 2.
Schematic diagram for fixed version
* Only for version with inhibit function.
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Pin configuration
LD29150XXXX - LD29150xx
2
Figure 3.
Pin configuration
Pin connections (top view)
TO-220
P2PAK
PPAK
DPAK
* Not connected for fixed version.
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LD29150XXXX - LD29150xx
Typical application
3
Figure 4.
Typical application
Application circuit
VO = VREF (1 + R1/R2)
* Only for version with inhibit function.
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Maximum ratings
LD29150XXXX - LD29150xx
4
Table 2.
Symbol VI VO VINH IO PD TSTG TOP
Maximum ratings
Absolute maximum ratings
Parameter DC input voltage DC output voltage Inhibit input voltage Output current Power dissipation Storage temperature range Operating junction temperature range Value 30 (1) -0.3 to 20 -0.3 to 20 Internally limited Internally limited -55 to 150 -40 to 125 Unit V V V mA mW C 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. Thermal data
Parameter Thermal resistance junction-ambient Thermal resistance junction-case DPAK 100 8 PPAK 100 8 P2PAK 60 3 TO-220 50 3 Unit C/W C/W
Table 3.
Symbol RthJA RthJC
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Electrical characteristics
5
Table 4.
Electrical characteristics
Electrical characteristics of LD29150#15 (IO = 10 mA, TJ = 25 C, VI = 3.5 V, VINH = 2 V (Note 2), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Minimum operating input voltage Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 1.5A, TJ = -40 to 125C IO = 10mA to 1.5A, VI = 3 to 7V TJ = -40 to 125C IO = 10mA to 1.5A VI = 3 to 13V f = 120 Hz, VI = 3.5 1V, IO = 0.75A (Note 1) IO = 0.75A, TJ = -40 to 125C Iq Quiescent current IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown VI - VO = 5.5V OFF MODE, (Note 2), TJ = -40 to 125C ON MODE, (Note 2), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA 2 5 60 150 10 65 Min. 2.5 1.485 1.47 0.2 0.06 75 15 30 130 2.2 0.8 40 mA 80 180 A A V V A VRMS C 1.5 1.515 V 1.53 1.0 0.5 % % dB Typ. Max. Unit V
Symbol VI VO VO VO SVR
TSHDN
Note:
1 2
Guaranteed by design. Only for version with Inhibit function.
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Electrical characteristics
LD29150XXXX - LD29150xx
Table 5.
Electrical characteristics of LD29150#18 (IO = 10 mA, TJ = 25 C, VI = 3.8 V, VINH = 2 V (Note 3), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 1.5A, VI = 3 to 7.3V TJ = -40 to 125C IO = 10mA to 1.5A VI = 3 to 13V f = 120 Hz, VI = 3.8 1V, IO = 0.75A (Note 1) IO = 250mA, TJ = -40 to 125C (Note 2) 62 Min. 1.782 1.764 0.2 0.06 72 0.1 0.2 0.4 15 30 130 2.2 0.8 2 5 72 150 10 0.7 40 mA 80 180 A A V V A VRMS C V Typ. 1.8 Max. 1.818 V 1.836 1.0 0.5 % % dB Unit
Symbol VO VO VO SVR
VDROP
Dropout voltage
IO = 0.75A, TJ = -40 to 125C (Note 2) IO = 1.5A, TJ = -40 to 125C (Note 2) IO = 0.75A, TJ = -40 to 125C
Iq
Quiescent current
IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
Isc VIL VIH IINH eN TSHDN
Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown
VI - VO = 5.5V OFF MODE, (Note 3), TJ = -40 to 125C ON MODE, (Note 3), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA
Note:
1 2 3
Guaranteed by design. 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. Only for version with Inhibit function.
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Electrical characteristics
Table 6.
Electrical characteristics of LD29150#25 (IO = 10 mA, TJ = 25 C, VI = 4.5 V, VINH = 2 V (Note 3), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 1.5A, VI = 3.5 to 8V TJ = -40 to 125C IO = 10mA to 1.5A VI = 3.5 to 13V f = 120 Hz, VI = 4.5 1V, IO = 0.75A (Note 1) IO = 250mA, TJ = -40 to 125C (Note 2) 55 Min. 2.475 2.45 0.2 0.06 70 0.1 0.2 0.4 15 30 130 2.2 0.8 2 5 100 150 10 0.7 40 mA 80 180 A A V V A VRMS C V Typ. 2.5 Max. 2.525 V 2.55 1.0 0.5 % % dB Unit
Symbol VO VO VO SVR
VDROP
Dropout voltage
IO = 0.75A, TJ = -40 to 125C (Note 2) IO = 1.5A, TJ = -40 to 125C (Note 2) IO = 0.75A, TJ = -40 to 125C
Iq
Quiescent current
IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
Isc VIL VIH IINH eN TSHDN
Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown
VI - VO = 5.5V OFF MODE, (Note 3), TJ = -40 to 125C ON MODE, (Note 3), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA
Note:
1 2 3
Guaranteed by design. 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. Only for version with Inhibit function.
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Electrical characteristics
LD29150XXXX - LD29150xx
Table 7.
Electrical characteristics of LD29150#33 (IO = 10 mA, TJ = 25 C, VI = 5.3 V, VINH = 2 V (Note 3), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 1.5A, VI = 4.3 to 8.8V TJ = -40 to 125C IO = 10mA to 1.5A VI = 4.3 to 13V f = 120 Hz, VI = 5.3 1V, IO = 0.75A (Note 1) IO = 250mA, TJ = -40 to 125C (Note 2) 52 Min. 3.267 3.234 0.2 0.06 67 0.1 0.2 0.4 15 30 130 2.2 0.8 2 5 132 150 10 0.7 40 mA 80 180 A A V V A VRMS C V Typ. 3.3 Max. 3.333 V 3.366 1.0 0.5 % % dB Unit
Symbol VO VO VO SVR
VDROP
Dropout voltage
IO = 0.75A, TJ = -40 to 125C (Note 2) IO = 1.5A, TJ = -40 to 125C (Note 2) IO = 0.75A, TJ = -40 to 125C
Iq
Quiescent current
IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
Isc VIL VIH IINH eN TSHDN
Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown
VI - VO = 5.5V OFF MODE, (Note 3), TJ = -40 to 125C ON MODE, (Note 3), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA
Note:
1 2 3
Guaranteed by design. 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. Only for version with Inhibit function.
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LD29150XXXX - LD29150xx
Electrical characteristics
Table 8.
Electrical characteristics of LD29150#50 (IO = 10 mA, TJ = 25 C, VI = 7 V, VINH = 2 V (Note 3), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 1.5A, VI = 6 to 10.5V TJ = -40 to 125C IO = 10mA to 1.5A VI = 6 to 13V f = 120 Hz, VI = 7 1V, IO = 0.75A (Note 1) IO = 250mA, TJ = -40 to 125C (Note 2) 49 Min. 4.95 4.9 0.2 0.06 64 0.1 0.2 0.4 15 30 130 2.2 0.8 2 5 200 150 10 0.7 40 mA 80 180 A A V V A VRMS C V Typ. 5 Max. 5.05 V 5.1 1.0 0.5 % % dB Unit
Symbol VO VO VO SVR
VDROP
Dropout voltage
IO = 0.75A, TJ = -40 to 125C (Note 2) IO = 1.5A, TJ = -40 to 125C (Note 2) IO = 0.75A, TJ = -40 to 125C
Iq
Quiescent current
IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
Isc VIL VIH IINH eN TSHDN
Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown
VI - VO = 5.5V OFF MODE, (Note 3), TJ = -40 to 125C ON MODE, (Note 3), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA
Note:
1 2 3
Guaranteed by design. 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. Only for version with Inhibit function.
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Electrical characteristics
LD29150XXXX - LD29150xx
Table 9.
Electrical characteristics of LD29150#ADJ (IO = 10 mA, TJ = 25 C, VI = 3.23 V, VINH = 2 V (Note 3), CI = 330 nF, CO = 10 F adjust pin tied to output pin)
Parameter Minimum operating input voltage Load regulation Line regulation Reference voltage Test conditions IO = 10mA to 1.5A, TJ = -40 to 125C IO = 10mA to 1.5A VI = 2.5 V to 13V, IO = 10mA IO = 10mA to 1.5A, VI = 2.5 to 4.5V TJ = -40 to 125C (Note 2) f = 120 Hz, VI = 3.23 1V, IO = 0.75A (Note 1) IO = 0.75A, TJ = -40 to 125C -1% -2% 45 75 15 30 130 40 mA 80 180 1 2.2 0.8 2 5 50 150 10 A A A V V A VRMS C Min. 2.5 0.2 0.06 1.23 1.0 0.5 +1% V +2% dB Typ. Max. Unit V % %
Symbol VI VO VO VREF SVR
Supply voltage rejection
Iq
Quiescent current
IO = 1.5A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
IADJ Isc VIL VIH IINH eN TSHDN
Adjust pin current Short circuit current Control input logic low Control input logic high Control input current Output noise voltage Thermal shutdown
TJ = -40 to 125C (Note 1) VI - VO = 5.5V OFF MODE, (Note 3),TJ = -40 to 125C ON MODE, (Note 3), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA
Note:
1 2 3
Guaranteed by design. Reference voltage is measured between output and GND pin, with ADJ PIN tied to VOUT. Only for version with Inhibit function.
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Typical characteristics
6
Figure 5.
Typical characteristics
Output voltage vs temperature Figure 6. Reference voltage vs temperature
Figure 7.
Dropout voltage vs temperature
Figure 8.
Dropout voltage vs output current
Figure 9.
Quiescent current vs output current Figure 10. Quiescent current vs output current
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Typical characteristics
LD29150XXXX - LD29150xx
Figure 11. Quiescent current vs supply voltage
Figure 12. Quiescent current vs temperature
Figure 13. Quiescent current vs temperature
Figure 14. Short circuit current vs temperature
Figure 15. Adjust pin current vs temperature
Figure 16. Supply voltage rejection vs temperature
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LD29150XXXX - LD29150xx
Typical characteristics
Figure 17. Output voltage vs input voltage
Figure 18. Stability vs CO
Figure 19. Line transient
Figure 20. Load transient
VI=3.5 to 5.5V, IO=10mA, VO=2.5V, CO=10F
VI=5V, IO=10mA to 1.5A, VO=2.5V, CO=10F
Figure 21. Start-up time 10mA
Figure 22. Start-up time 1.5A
CO=10F, IO=10mA, VINH=2V, VO=5V, VI=7V
CO=10F, IO=1.5A, VINH=2V, VO=5V, VI=7V
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Package mechanical data
LD29150XXXX - LD29150xx
7
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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.
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LD29150XXXX - LD29150xx
Package mechanical data
DPAK mechanical data
mm. Dim. Min. A A1 A2 B b4 C C2 D D1 E E1 e e1 H L (L1) L2 L4 R V2 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 5.1 6.4 4.7 2.28 4.4 9.35 1 2.8 0.8 0.6 0.2 0 8 0 1 0.023 0.008 8 4.6 10.1 0.173 0.368 0.039 0.110 0.031 0.039 6.6 0.252 0.185 0.090 0.181 0.397 Typ. Max. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 Min. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.200 0.260 Typ. Max. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 inch.
0068772-F
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Package mechanical data
LD29150XXXX - LD29150xx
PPAK mechanical data
mm. Dim. Min. A A1 A2 B B2 C C2 D D1 E E1 e G G1 H L2 L4 L5 L6 0.6 1 2.8 4.9 2.38 9.35 0.8 6.4 4.7 1.27 5.25 2.7 10.1 1 1 0.023 0.039 0.110 0.193 0.093 0.368 0.031 2.2 0.9 0.03 0.4 5.2 0.45 0.48 6 5.1 6.6 0.252 0.185 0.050 0.206 0.106 0.397 0.039 0.039 Typ. Max. 2.4 1.1 0.23 0.6 5.4 0.6 0.6 6.2 Min. 0.086 0.035 0.001 0.015 0.204 0.017 0.019 0.236 0.201 0.260 Typ. Max. 0.094 0.043 0.009 0.023 0.212 0.023 0.023 0.244 inch.
0078180-E
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LD29150XXXX - LD29150xx
Package mechanical data
Tape & reel DPAK-PPAK mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 12.8 20.2 60 22.4 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 Typ. Max. 330 13.2 0.504 0.795 2.362 0.882 0.2.76 0.417 0.105 0.161 0.319 0.512 Min. Typ. Max. 12.992 0.519 inch.
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Revision history
LD29150XXXX - LD29150xx
8
Table 10.
Date
Revision history
Document revision history
Revision 5 6 7 8 9 10 11 12 13 Changes Add figures 20 and 21, PPAK, TO-220 and TO-220FP mechanical data updated. Remove Package TO-220FP4. Mistake Figure 7. Add VO and VINH on Table 2. Order Codes Has Been Updated. Add new package P2PAK. Add row TSHDN on tables of the electrical characteristics. Order codes updated. Added: Table 1 on page 1.
17-Jun-2004 19-Jul-2004 08-Nov-2004 21-Mar-2005 21-Oct-2005 17-Oct-2006 13-Nov-2006 11-May-2007 15-Feb-2008
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