Datasheets | Power Management | Linear Regulators | Very Low Dropout

3 A, very low drop voltage regulators

Datasheet

Format: (523 kb)

Last Updated: 11/07/2008

Pages: 26

Untitled Document

Generic Part Number

Orderable Part Number

Status

LD29300XX	LD29300P2MTR	Active
LD29300XX15	LD29300P2M15R	Obsolete
	LD29300V15	Obsolete
	LD29300P2M15	Obsolete
LD29300XX18	LD29300D2M18R	Active
	LD29300P2M18R	Active
	LD29300D2T18R	Active
LD29300XX25	LD29300D2T25R	NRND
	LD29300D2M25R	Active
LD29300XX33	LD29300D2M33R	NRND
	LD29300V33	NRND
	LD29300P2M33R	Active
LD29300XX80	LD29300V80	Obsolete
	LD29300P2M80	Obsolete
	LD29300P2M80R	Obsolete
LD29300XX50	LD29300P2M50R	Active
	LD29300D2M50R	Active
	LD29300V50	Active

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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
TO-220 D2PAK

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.
P2PAK/A P2PAK D2PAK/A

Table 1.

Device summary
Part numbers LD29300XX15 LD29300XX18 LD29300XX25 LD29300XX33 LD29300XX50 LD29300XX80 LD29300XX Output voltages 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V 8.0 V ADJ

July 2008

Rev 12

1/26
www.st.com 26

Contents

LD29300xx

Contents
1 2 3 4 5 6 7 8 9 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

2/26

LD29300xx

Diagram

1
Figure 1.

Diagram
Schematic diagram for adjustable version

Figure 2.

Schematic diagram for fixed version

* Only for version with inhibit function.

3/26

Pin configuration

LD29300xx

2
Figure 3.

Pin configuration
Pin connections (top view)

TO-220

D2PAK

P2PAK

P2PAK/A

D2PAK/A

* Not connected for fixed version.

4/26

LD29300xx

Typical application

3
Figure 4.

Typical application
Application circuit

VO = VREF (1 + R1/R2)

* Only for version with inhibit function.

5/26

Maximum ratings

LD29300xx

4
Table 2.
Symbol VI IO PD TSTG TOP

Maximum ratings
Absolute maximum ratings
Parameter DC input voltage Output current Power dissipation Storage temperature range Operating junction temperature range Value 30 (1) Internally limited Internally limited -55 to 150 -40 to 125 Unit 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 TO-220 50 3 D2PAK-P2PAK-D2PAK/A-P2PAK/A 60 3 Unit C/W C/W

Table 3.
Symbol RthJA RthJC

6/26

LD29300xx

Electrical characteristics

5
Table 4.

Electrical characteristics
Electrical characteristics of LD29300#15 (IO = 10 mA, TJ = 25 C, VI = 3.5 V, VINH = 2 V (1), 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 3A, TJ = -40 to 125C IO = 10mA to 3A, VI = 3 to 7V TJ = -40 to 125C IO = 10mA to 3A VI = 3 to 13V f = 120 Hz, VI = 3.5 1V, IO = 1.5A IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE
(1), (2)

Symbol VI VO VO VO SVR

Min. 2.5 1.485 1.47

Typ.

Max.

Unit V

1.5

1.515 V 1.53

0.2 0.06 65 75 20 45 130 4.5

1.0 0.5

% % dB

50 mA 100 180 A A 0.8 V V

TJ = -40 to 125C 2 5 60

ON MODE (1), TJ = -40 to 125C TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

10

A VRMS

1. Only for version with Inhibit function. 2. Guaranteed by design

7/26

Electrical characteristics Table 5.

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 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 3A, VI = 3 to 7.3V TJ = -40 to 125C IO = 10mA to 3A VI = 3 to 13V f = 120 Hz, VI = 3.8 1V, IO = 1.5A IO = 500mA, TJ = -40 to 125C
(3) (2)

Symbol VO VO VO SVR

Min. 1.782 1.764

Typ. 1.8

Max. 1.818

Unit V

1.836 0.2 0.06 1.0 0.5 % % dB

62

72 0.1 0.2 0.4 20 45 130 4.5 0.7 50

VDROP

Dropout voltage

IO = 1.5A, TJ = -40 to 125C (3) IO = 3A, TJ = -40 to 125C
(3)

V

IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE ON MODE
(1),

mA 100 180 A A 0.8 2 5 60 10 V V A VRMS

TJ = -40 to 125C

(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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

Electrical characteristics

Table 6.

Electrical characteristics of LD29300#25 (IO = 10 mA, TJ = 25 C, VI = 4.5 V, VINH = 2 V (1), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 3A, VI = 3.5 to 8V TJ = -40 to 125C IO = 10mA to 3A VI = 3 to 13V f = 120 Hz, VI = 4.5 1V, IO = 1.5A IO = 500mA, TJ = -40 to 125C
(3) (2)

Symbol VO VO VO SVR

Min. 2.475 2.45

Typ. 2.5

Max. 2.525

Unit V

2.55 0.2 0.06 1.0 0.5 % % dB

55

70 0.1 0.2 0.4 20 45 130 4.5 0.7 50

VDROP

Dropout voltage

IO = 1.5A, TJ = -40 to 125C (3) IO = 3A, TJ = -40 to 125C
(3)

V

IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE ON MODE
(1),

mA 100 180 A A 0.8 2 5 100 10 V V A VRMS

TJ = -40 to 125C

(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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

LD29300xx

Table 7.

Electrical characteristics of LD29300#33 (IO = 10 mA, TJ = 25 C, VI = 5.3 V, VINH = 2 V (1), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 3A, VI = 4.3 to 8.8V TJ = -40 to 125C IO = 10mA to 3A VI = 4.3 to 13V f = 120 Hz, VI = 5.3 1V, IO = 1.5A IO = 500mA, TJ = -40 to 125C
(3) (2)

Symbol VO VO VO SVR

Min. 3.267 3.234

Typ. 3.3

Max. 3.333

Unit V

3.366 0.2 0.06 1.0 0.5 % % dB

52

67 0.1 0.2 0.4 20 45 130 4.5 0.7 50

VDROP

Dropout voltage

IO = 1.5A, TJ = -40 to 125C (3) IO = 3A, TJ = -40 to 125C
(3)

V

IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE ON MODE
(1),

mA 100 180 A A 0.8 2 5 132 10 V V A VRMS

TJ = -40 to 125C

(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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

Electrical characteristics

Table 8.

Electrical characteristics of LD29300#50 (IO = 10 mA, TJ = 25 C, VI = 7 V, VINH = 2 V (1), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 3A, VI = 6 to 10.5V TJ = -40 to 125C IO = 10mA to 3A VI = 6 to 13V f = 120 Hz, VI = 7 1V, IO = 1.5A IO = 500mA, TJ = -40 to 125C
(3) (2)

Symbol VO VO VO SVR

Min. 4.95 4.9

Typ. 5

Max. 5.05

Unit V

5.1 0.2 0.06 1.0 0.5 % % dB

49

64 0.1 0.2 0.4 20 45 130 4.5 0.7 50

VDROP

Dropout voltage

IO = 1.5A, TJ = -40 to 125C (3) IO = 3A, TJ = -40 to 125C
(3)

V

IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE ON MODE
(1),

mA 100 180 A A 0.8 2 5 200 10 V V A VRMS

TJ = -40 to 125C

(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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

LD29300xx

Table 9.

Electrical characteristics of LD29300#80 (IO = 10 mA, TJ = 25 C, VI = 10 V, VINH = 2 V (1), CI = 330 nF, CO = 10 F, unless otherwise specified)
Parameter Output voltage Load regulation Line regulation Supply voltage rejection Test conditions IO = 10mA to 3A, VI = 9 to 13V TJ = -40 to 125C IO = 10mA to 3A VI = 9 to 13V f = 120 Hz, VI = 9 1V, IO = 1.5A IO = 500mA, TJ = -40 to 125C
(3) (2)

Symbol VO VO VO SVR

Min. 7.92 7.84

Typ. 8

Max. 8.08

Unit V

8.16 0.2 0.06 1.0 0.5 % % dB

45

59 0.1 0.2 0.4 20 45 130 4.5 0.7 50

VDROP

Dropout voltage

IO = 1.5A, TJ = -40 to 125C (3) IO = 3A, TJ = -40 to 125C
(3)

V

IO = 1.5A, TJ = -40 to 125C Iq Quiescent current IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C Isc VIL VIH IINH eN Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage VI - VO = 5.5V OFF MODE ON MODE
(1),

mA 100 180 A A 0.8 2 5 320 10 V V A VRMS

TJ = -40 to 125C

(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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.

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 F adjust pin tied to output pin)
Parameter Test conditions IO = 10mA to 3A, TJ = -40 to 125C IO = 10mA to 3A VI = 2.5 V to 13V IO = 10mA to 3A, VI = 2.5 to 4.5V TJ = -40 to 125C (2) f = 120 Hz, VI = 3.23 1V, IO = 1.5A (3) IO = 1.5A, TJ = -40 to 125C -1% -2% 65 75 20 45 130 50 mA 100 180 1 4.5 0.8 2 5 50 10 A A A V V A VRMS 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

Minimum operating input voltage Load regulation Line regulation Reference voltage Supply voltage rejection

Iq

Quiescent current

IO = 3A, TJ = -40 to 125C VI = 13V, VINH = GND, TJ = -40 to 125C
(3)

I ADJ Isc VIL VIH IINH eN

Adjust pin current Shor t circuit current Control input logic low Control input logic high Control input current Output noise voltage

TJ = -40 to 125C VI - VO = 5.5V

OFF MODE (1),TJ = -40 to 125C ON MODE
(1),

TJ = -40 to 125C

TJ = -40 to 125C, VINH = 13V BP = 10Hz to 100kHz, IO = 100mA

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
Figure 5.

Typical characteristics
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

Typical characteristics

Figure 11. Quiescent current vs temperature

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=10F

15/26

Typical characteristics Figure 17. Load transient

LD29300xx

VI=4.5V, IO=10mA to 3A, VO=2.5V, CO=47F

16/26

LD29300xx

Package mechanical data

7

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. A b b1 c D E e e1 F H1 J1 L L1 L20 L30 P Q 3.75 2.65 mm. Min. 4.40 0.61 1.15 0.49 15.25 10.0 2.4 4.95 1.23 6.2 2.40 13.0 3.5 16.4 28.9 3.85 2.95 0.148 0.104 Typ. Max. 4.60 0.88 1.70 0.70 15.75 10.40 2.7 5.15 1.32 6.6 2.72 14.0 3.93 Min. 0.173 0.024 0.045 0.019 0.600 0.394 0.094 0.195 0.048 0.244 0.094 0.512 0.138 0.646 1.138 0.152 0.116 inch. Typ. Max. 0.181 0.035 0.067 0.028 0.620 0.409 0.106 0.203 0.052 0.260 0.107 0.551 0.155

0015988/N

18/26

LD29300xx

Package mechanical data

D2PAK mechanical data
mm. Dim. Min. A A1 A2 B B2 C C2 D D1 E E1 G L L2 L3 M R V2 0 4.88 15 1.27 1.4 2.4 0. 4 8 0 10 8.5 5.28 15.85 1.4 1.75 3.2 0.192 0.590 0.050 0.055 0.094 0.016 8 4.4 2.49 0.03 0.7 1.14 0 .45 1.23 8.95 8 10.4 0.393 0.335 0.208 0.624 0.055 0.068 0.126 Typ. Max. 4.6 2.69 0.23 0.93 1.7 0.6 1.36 9.35 Min. 0.173 0.098 0.001 0.027 0.044 0.017 0.048 0.352 0.315 0.409 Typ. Max. 0.181 0.106 0.009 0.036 0.067 0.023 0.053 0.368 inch.

P011P6G

19/26

Package mechanical data

LD29300xx

D2PAK/A mechanical data
mm. Dim. Min. A A1 A2 B B1 B2 C C2 D D1 E E1 G L L2 M R V2 0 4.88 15 1.27 2.4 0. 4 8 0 10 8.5 5.28 15.85 1.4 3.2 0.192 0.591 0.050 0.094 0.016 8 4.40 2.49 0.03 0.7 0.8 1.14 0.45 1.23 8.95 8 10.4 0.394 0.335 0.208 0.624 0.055 0.126 Typ. Max. 4.60 2.69 0.23 0.93 1 .3 1.7 0.60 1.36 9.35 Min. 0.173 0.098 0.001 0.028 0.031 0.045 0.018 0.048 0.352 0.315 0.409 Typ. Max. 0.181 0.106 0.009 0.037 0.051 0.067 0.024 0.054 0.368 inch.

7106164/D

20/26

LD29300xx

Package mechanical data

P2PAK mechanical data
mm. Dim. Min. A A1 A2 b c c2 D D2 E E1 e e1 L L2 L3 L5 R V2 0 3.20 6.60 13.70 1.25 0.90 1.55 0.40 8 0 10.00 8.5 3.60 7.00 14.50 1.40 1.70 2.40 0.126 0.260 0.539 0.049 0.035 0.061 0.016 8 4.30 2.40 0.03 0.80 0.45 1.17 8.95 8 10.40 0.393 0.334 Typ. Max. 4.80 2.80 0.23 1.05 0.60 1.37 9.35 Min. 0.169 0.094 0.001 0.031 0.017 0.046 0.352 0.315 0.409 0.409 0.142 0.275 0.571 0.055 0.067 0.094 Typ. Max. 0.188 0.110 0.009 0.041 0 . 0 23 0.053 0.368 inch.

7226255/B

21/26

Package mechanical data

LD29300xx

P2PAK/A mechanical data
mm. Dim. Min. A A2 C D D1 E F G G1 H1 H2 L L1 L2 M R V2 0 1.27 2.4 0.40 8 0 10.00 15 8 1.40 3.2 0.050 0.094 0.016 8 4.30 0.03 1.17 2.40 8.95 0.45 0.80 3.20 6.60 8.5 10.40 15.85 0.393 0.590 0.315 0.055 0.126 Typ. Max. 4.80 0.23 1.37 2.80 9.35 0.60 1.05 3.60 7.00 Min. 0.169 0.001 0.046 0.094 0.352 0.017 0.031 0.126 0.260 0.334 Typ. Max. 0.188 0.009 0.053 0.110 0.368 0 . 0 23 0.041 0.142 0.275 0.409 0.409 0.624 inch.

7157127/A

22/26

LD29300xx

Package mechanical data

Tape & reel D2PAK-P2PAK-D2PAK/A-P2PAK/A mechanical data
mm. Dim. Min. A C D N T Ao Bo Ko Po P 10.50 15.70 4.80 3.9 11.9 10.6 15.80 4.90 4.0 12.0 12.8 20.2 60 14.4 10.70 15.90 5.00 4.1 12.1 0.413 0.618 0.189 0.153 0.468 0.417 0.622 0.193 0.157 0.472 13.0 Typ. Max. 180 13.2 0.504 0.795 2 .362 0.567 0.421 0.626 0.197 0.161 0.476 0.512 Min. Typ. Max. 7.086 0.519 inch.

23/26

Order codes

LD29300xx

8
Table 11.

Order codes
Order codes
Packages TO-220 D2 PAK D PAK/A
2

P PAK

2

(1)

P PAK/A

2

Output voltage 1.5 V

LD29300P2T15R LD29300D2T18R LD29300D2M18R LD29300D2M25R LD29300V33 LD29300V50 LD29300D2T50R
(1)

LD29300P2T18R

LD29300P2M18R

1.8 V 2.5 V

LD29300D2M33R LD29300D2M50R

LD29300P2T33R LD29300P2T50R LD29300P2T80R LD29300P2TR

LD29300P2M33R LD29300P2M50R

3.3 V 5.0 V 8.0 V

LD29300P2MTR

(1)

ADJ

1. Available on request

24/26

LD29300xx

Revision history

9
Table 12.
Date

Revision history
Document revision history
Revision 7 8 9 10 11 12 Order codes updated. Order codes updated. Order codes updated. Order codes updated. Modified: Table 11 on page 24. Modified: Table 11 on page 24. Changes

21-Oct-2005 10-Apr-2007 11-May-2007 08-Jun-2007 03-Apr-2008 11-Jul-2008

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LD29300xx

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Document Number: 9248



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