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LD29080 series
800mA Fixed and adjustable output very low drop voltage regulator
Features

Very low dropout voltage (Typ. 0.4 at 800mA) Guaranteed output current up to 800mA Fixed and adjustable output voltage (1% at 25C) Internal current and thermal limit Logic controlled electronic shutdown
PPAK DPAK
Description
The LD29080 is a high current, high accuracy, low-dropout voltage regulators series. These regulators feature 400mV dropout voltages and very low ground current. Designed for high current loads, these devices also find applications in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes. Typical application 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.
Order codes
Part numbers Packages DPAK (T&R) LD29080DT15R LD29080DT18R LD29080DT25R LD29080DT33R LD29080DT50R LD29080DT80R PPAK (T&R) LD29080PT15R LD29080PT18R LD29080PT25R LD29080PT33R LD29080PT50R LD29080PT80R LD29080PTR
1. Available on request.
Output voltage
1.5 V 1.8 V (1) 2.5 V 3.3 V 5.0 V 8.0 V (1) ADJ
May 2007
Rev. 3
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www.st.com 21
LD29080 series
Contents
1 2 3 4 5 6 7 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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LD29080 series
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
LD29080 series
2
Figure 3.
Pin configuration
Pin connections (top view)
PPAK
DPAK
Table 1.
Pin description
Symbol VI GND VO ADJ/N.C. INHIBIT
(1) (2)
PPAK 2 3 4 5 1
DPAK 1 2 3
1. Not connect for fixed version. 2. Not internally pulled up; in order to assure the operating condition (device in ON mode), it must be connected to a positive voltage higher than 2V.
Figure 4.
Application circuit
VO = VREF (1 + R1/R2)
* Only for version with inhibit function.
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LD29080 series
Maximum ratings
3
Table 2.
Symbol VI VINH IO PD TSTG TOP
1.
Maximum ratings
Absolute maximum ratings
Parameter DC Input Voltage Inhibit Input Voltage Output Current Power Dissipation Storage Temperature Range Storage Temperature Range Value 30 (1) 14 Internally Limited Internally Limited -55 to 150 -40 to 125 Unit V V mA mW C C
Above 14V 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-case Thermal resistance junction-ambient DPAK 8 100 PPAK 8 100 Unit C/W C/W
Table 3.
Symbol RthJC RthJA
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Electrical characteristics
LD29080 series
4
Table 4.
Electrical characteristics
Electrical characteristics of LD29080#15 IO = 10mA, (Note 4) TJ = 25C, VI = 3.5V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 3 to 7V TJ = -40 to 125C IO = 10mA to 800mA VI = 3 to 13V f = 120 Hz, VI = 3.8 1V, IO = 400mA (Note 1) IO = 10mA, TJ = -40 to 125C Iq Quiescent Current IO = 400mA, TJ = -40 to 125C IO = 800mA, 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 RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA 2 5 60 10 65 Min. 2.5 1.485 1.463 0.2 0.06 75 2 8 14 130 1.2 0.8 5 20 35 180 A A V V A VRMS mA 1.5 Typ. Max. 13 1.515 V 1.537 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
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LD29080 series
Electrical characteristics
Table 5.
Electrical characteristics of LD29080#18 IO = 10mA, (Note 4) TJ = 25C, VI = 3.5V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 3 to 7.3V TJ = -40 to 125C IO = 10mA to 800mA VI = 3 to 13V f = 120 Hz, VI = 3.8 1V, IO = 400mA (Note 1) IO = 150mA, TJ = -40 to 125C (Note 2) 62 Min. 2.5 1.782 1.755 0.2 0.06 72 0.1 0.2 0.4 2 8 14 130 1.2 0.8 2 5 72 10 0.7 5 20 35 180 A A V V A VRMS mA V 1.8 Typ. Max. 13 1.818 V 1.845 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
VDROP
Dropout Voltage
IO = 400mA, TJ = -40 to 125C (Note 2) IO = 800mA, TJ = -40 to 125C (Note 2) IO = 10mA, TJ = -40 to 125C
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, 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
RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
7/21
Electrical characteristics
LD29080 series
Table 6.
Electrical characteristics of LD29080#25 IO = 10mA, (Note 4) TJ = 25C, VI = 4.5V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 3.5 to 8V TJ = -40 to 125C IO = 10mA to 800mA VI = 3.5 to 13V f = 120 Hz, VI = 4.5 1V, IO = 400mA (Note 1) IO = 150mA, TJ = -40 to 125C (Note 2) 55 2.475 2.438 0.2 0.06 70 0.1 0.2 0.4 2 8 14 130 1.2 0.8 2 5 100 10 0.7 5 20 35 180 A A V V A VRMS mA V 2.5 Min. Typ. Max. 13 2.525 V 2.562 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
VDROP
Dropout Voltage
IO = 400mA, TJ = -40 to 125C (Note 2) IO = 800mA, TJ = -40 to 125C (Note 2) IO = 10mA, TJ = -40 to 125C
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, 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
RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
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LD29080 series
Electrical characteristics
Table 7.
Electrical characteristics of LD29080#33 IO = 10mA, (Note 4) TJ = 25C, VI = 5.3V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 4.3 to 8.8V TJ = -40 to 125C IO = 10mA to 800mA VI = 4.3 to 13V f = 120 Hz, VI = 5.3 1V, IO = 400mA (Note 1) IO = 150mA, TJ = -40 to 125C (Note 2) 52 3.267 3.218 0.2 0.06 67 0.1 0.2 0.4 2 8 14 130 1.2 0.8 2 5 132 10 0.7 5 20 35 180 A A V V A VRMS mA V 3.3 Min. Typ. Max. 13 3.333 V 3.382 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
VDROP
Dropout Voltage
IO = 400mA, TJ = -40 to 125C (Note 2) IO = 800mA, TJ = -40 to 125C (Note 2) IO = 10mA, TJ = -40 to 125C
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, 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
RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
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Electrical characteristics
LD29080 series
Table 8.
Electrical characteristics of LD29080#50 IO = 10mA, (Note 4) TJ = 25C, VI = 7V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 6 to 10.5V TJ = -40 to 125C IO = 10mA to 800mA VI = 6 to 13V f = 120 Hz, VI = 7 1V, IO = 400mA (Note 1) IO = 150mA, TJ = -40 to 125C (Note 2) 49 4.95 4.875 0.2 0.06 64 0.1 0.2 0.4 2 8 14 130 1.2 0.8 2 5 320 10 0.7 5 20 35 180 A A V V A VRMS mA V 5 Min. Typ. Max. 13 5.05 V 5.125 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
VDROP
Dropout Voltage
IO = 400mA, TJ = -40 to 125C (Note 2) IO = 800mA, TJ = -40 to 125C (Note 2) IO = 10mA, TJ = -40 to 125C
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, 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
RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
10/21
LD29080 series
Electrical characteristics
Table 9.
Electrical characteristics of LD29080#80 IO = 10mA, (Note 4) TJ = 25C, VI = 10V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Output Voltage Load Regulation Line Regulation Supply Voltage Rejection Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA, VI = 9 to 13V TJ = -40 to 125C IO = 10mA to 800mA VI = 9 to 13V f = 120 Hz, VI = 9 1V, IO = 400mA (Note 1) IO = 150mA, TJ = -40 to 125C (Note 2) 45 7.92 7.80 0.2 0.06 59 0.1 0.2 0.4 2 8 14 130 1.2 0.8 2 5 320 10 0.7 5 20 35 180 A A V V A VRMS mA V 8 Min. Typ. Max. 13 8.08 V 8.20 1.0 0.5 % % dB Unit V
Symbol VI VO VO VO SVR
VDROP
Dropout Voltage
IO = 400mA, TJ = -40 to 125C (Note 2) IO = 800mA, TJ = -40 to 125C (Note 2) IO = 10mA, TJ = -40 to 125C
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, 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
RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
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Electrical characteristics
LD29080 series
Table 10.
Electrical characteristics of LD29080#ADJ IO = 10mA, (Note 4) TJ = 25C, VI = 10V, VINH = 2V, CI = 330nF, CO = 10F, unless otherwise specified)
Parameter Operating Input Voltage Load Regulation Line Regulation Reference voltage Test Conditions IO = 10mA to 800mA IO = 10mA to 800mA VI = 2.5 to 13V, IO = 10mA IO = 10mA to 800mA, VI = 2.5 to 6.73V TJ 1.2177 = -40 to 125C (Note 3) 1.1993 f = 120 Hz, VI = 3.23 1V, IO = 400mA (Note 1) IO = 10mA, TJ = -40 to 125C 45 Min. 2.5 0.2 0.06 1.23 Typ. Max. 13 1.0 0.5 1.2423 V 1.2607 75 2 8 14 130 5 20 35 180 1 1.2 0.8 2 5 50 10 A A A V V A VRMS mA dB Unit V % %
Symbol VI VO VO VREF SVR
Supply Voltage Rejection
Iq
Quiescent Current
IO = 400mA, TJ = -40 to 125C IO = 800mA, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
IADJ Isc VIL VIH IINH eN
Adjust Pin Current Short Circuit Current Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage
TJ = -40 to 125C RL = 0 OFF MODE, TJ = -40 to 125C ON MODE, TJ = -40 to 125C VINH = 13V, TJ = -40 to 125C BP = 10Hz to 100KHz, IO = 100mA
Note:
1 2 3 4
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+1V applied to VI. Reference Voltage is measured between output and GND pins, with ADJ PIN tied to VO. In order to avoid any output voltage rise within the whole operating temperature range, due to output leakage current, a minimum load current of 2mA is required.
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LD29080 series
Typical characteristics
5
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 temperature
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Typical characteristics
LD29080 series
Figure 11. Quiescent current vs supply voltage
Figure 12. Quiescent current vs temperature
Figure 13. Short circuit current vs temperature Figure 14. Adjust pin current vs temperature
Figure 15. Supply voltage rejection vs temperature
Figure 16. Output voltage vs input voltage
14/21
LD29080 series
Typical characteristics
Figure 17. Stability vs CO
Figure 18. Line transient
VI=3.5 to 13V, IO=10mA, VO=1.5V
Figure 19. Load transient
VI=3.5V, IO=10mA to 0.8A, VO=1.5V
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Package mechanical data
LD29080 series
6
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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LD29080 series
Package mechanical data
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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Package mechanical data
LD29080 series
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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LD29080 series
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
LD29080 series
7
Table 11.
Date
Revision history
Revision history
Revision 1 2 3 First Release. Order codes has been updated. Order codes has been updated. Changes
15-Oct-2004 20-Oct-2005 14-May-2007
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LD29080 series
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