Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsVoltage RegulatorsLE50ABZ-AP

This is information on a product in full production.

May 2012 Doc ID 2573 Rev 13 1/22

LExxAB

LExxC

Very low dropout voltage regulators with inhibit function

Datasheet − production data

Features

■ Very low dropout voltage (0.2 V typ.)

■ Very low quiescent current (typ. 50 µA in OFF

mode, 0.5 mA in ON mode, no load)

■ Output current up to 100 mA

■ Output voltages of 3 V, 3.3 V, 4.5 V, 5 V, 8 V

■ Internal current and thermal limit

■ Small 2.2 µF capacitor for stability

■ Available in ± 1% (A) or ± 2% (C) selection at

25 °C

■ Supply voltage rejection: 80 dB (typ.)

■ Temperature range: - 40 to 125 °C

Description

The LExxAB and LExxC are very low dropout

voltage regulators available in SO-8 and TO-92

packages and over a wide range of output

voltages.

The very low dropout voltage (0.2 V) and the very

low quiescent current make them particularly

suitable for low-noise low-power applications and

especially in battery-powered systems.

These devices are pin-to-pin compatible with the

older L78Lxx series. Furthermore, in the 8-pin

configuration (SO-8) they employ a shutdown

logic control (pin 5, TTL compatible). This means

that when the device is used as a local regulator,

a part of the board can be put in standby,

decreasing even more total power consumption.

In the three-terminal configuration (TO-92) the

device is always in the ON state, maintaining the

same electrical performance. It requires only a

2.2 µF capacitor for stability, reducing component

size and cost.

SO-8

TO-92

Table 1. Device summary

Order codes

Output voltages

SO-8

(tape and reel)

TO-92

(tape and reel)

TO-92 (Ammopak)

LE30ABZ-TR 3 V

LE30CD-TR 3 V

LE33CD-TR LE33CZ-TR LE33CZ-AP 3.3 V

LE45CD-TR 4.5 V

LE50ABD-TR LE50ABZ-AP 5 V

LE50CD-TR 5 V

LE80CD-TR 8 V

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Summary of content (22 pages)

PAGE 1
LExxAB LExxC Very low dropout voltage regulators with inhibit function Datasheet − production data Features ■ Very low dropout voltage (0.2 V typ.) ■ Very low quiescent current (typ. 50 µA in OFF mode, 0.5 mA in ON mode, no load) ■ Output current up to 100 mA ■ Output voltages of 3 V, 3.3 V, 4.5 V, 5 V, 8 V ■ Internal current and thermal limit ■ Small 2.2 µF capacitor for stability ■ Available in ± 1% (A) or ± 2% (C) selection at 25 °C ■ Supply voltage rejection: 80 dB (typ.
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Contents LExxAB, LExxC Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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LExxAB, LExxC 1 Diagram Figure 1.
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Pin configuration LExxAB, LExxC 2 Pin configuration Figure 2.
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LExxAB, LExxC Maximum ratings 3 Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter VI DC input voltage IO Output current Value Unit 20 V Internally limited (1) PTOT Power dissipation Internally limited TSTG Storage temperature range -65 to 150 °C TOP Operating junction temperature range -40 to 125 °C 1. Our SO-8 package used for voltage regulators is modified internally to have pins 2, 3, 6 and 7 electrically fused to the die attach pad.
PAGE 6
Electrical characteristics 4 LExxAB, LExxC Electrical characteristics Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 4. Symbol Electrical characteristics for LE30AB Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 5 V 2.970 3 3.030 IO = 10 mA, VI = 5 V, TJ = -25 to 85°C 2.940 Unit V 3.060 IO = 100 mA 18 150 V mA ΔVO Line regulation VI = 3.
PAGE 7
LExxAB, LExxC Electrical characteristics Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 5. Symbol Electrical characteristics for LE30C Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 5 V 2.940 3 3.060 IO = 10 mA, VI = 5 V, TJ = -25 to 85°C 2.880 Unit V 3.120 IO = 100 mA 18 150 V mA ΔVO Line regulation VI = 3.7 to 18 V, IO = 0.
PAGE 8
Electrical characteristics LExxAB, LExxC Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 6. Symbol Electrical characteristics for LE33C Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 5.3 V 3.234 3.3 3.366 IO = 10 mA, VI = 5.3 V, TJ = -25 to 85°C 3.168 Unit V 3.432 IO = 100 mA 18 150 V mA ΔVO Line regulation VI = 4 to 18 V, IO = 0.
PAGE 9
LExxAB, LExxC Electrical characteristics Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 7. Symbol Electrical characteristics for LE45C Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 6.5 V 4.41 4.5 4.59 IO = 10 mA, VI = 6.5 V, TJ = -25 to 85°C 4.32 Unit V 4.68 IO = 100 mA 18 150 V mA ΔVO Line regulation VI = 5.2 to 18 V, IO = 0.
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Electrical characteristics LExxAB, LExxC Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 8. Symbol Electrical characteristics for LE50AB Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 7 V 4.95 5 5.05 IO = 10 mA, VI = 7 V, TJ = -25 to 85°C 4.9 Unit V 5.1 IO = 100 mA 150 18 V 350 425 mA ΔVO Line regulation VI = 5.7 to 18 V, IO = 0.
PAGE 11
LExxAB, LExxC Electrical characteristics Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 9. Symbol Electrical characteristics for LE50C Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 7 V 4.9 5 5.1 IO = 10 mA, VI = 7 V, TJ = -25 to 85°C 4.8 Unit V 5.2 IO = 100 mA 150 18 V 350 425 mA ΔVO Line regulation VI = 5.7 to 18 V, IO = 0.
PAGE 12
Electrical characteristics LExxAB, LExxC Refer to the test circuits, TJ = 25 °C, CI = 0.1 µF, CO = 2.2 µF unless otherwise specified. Table 10. Symbol Electrical characteristics for LE80C Parameter VO Output voltage VI Operating input voltage IO Output current limit Test conditions Min. Typ. Max. IO = 10 mA, VI = 10 V 7.84 8 8.16 IO = 10 mA, VI = 10 V, TJ = -25 to 85°C 7.68 Unit V 8.32 IO = 100 mA 18 150 V mA ΔVO Line regulation VI = 8.7 to 18 V, IO = 0.
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LExxAB, LExxC Typical performance characteristics 5 Typical performance characteristics Figure 4. Unless otherwise specified, VO(NOM) = 3.3 V. Dropout voltage vs. output current Figure 5. Dropout voltage vs. temperature Figure 6. Supply current vs. temperature Figure 7. Supply current vs. input voltage Figure 8. Short-circuit current vs. dropout voltage Figure 9. SVR vs.
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Typical performance characteristics LExxAB, LExxC Figure 10. Logic-controlled precision 3.3/5.0 V selectable output Figure 11.
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LExxAB, LExxC Typical performance characteristics Figure 12. Multiple supplies with ON/OFF toggle switch Figure 13.
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Package mechanical data 6 LExxAB, LExxC Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark.
PAGE 17
LExxAB, LExxC Package mechanical data SO-8 mechanical data Dim. mm. Min. Typ. inch. Max. Min. Typ. Max. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8° (max.) 0.1 0.
PAGE 18
Package mechanical data LExxAB, LExxC TO-92 mechanical data mm. mils. Dim. Min. Typ. Max. Min. Typ. Max. A 4.32 4.95 170.1 194.9 b 0.36 0.51 14.2 20.1 D 4.45 4.95 175.2 194.9 E 3.30 3.94 129.9 155.1 e 2.41 2.67 94.9 105.1 e1 1.14 1.40 44.9 55.1 L 12.7 15.49 500.0 609.8 R 2.16 2.41 85.0 94.9 S1 0.92 1.52 36.2 59.8 W 0.41 0.56 16.1 22.
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LExxAB, LExxC Package mechanical data Tape & reel SO-8 mechanical data mm. inch. Dim. Min. A Typ. Max. Min. 330 Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ. 0.504 22.4 0.519 0.882 Ao 8.1 8.5 0.319 0.335 Bo 5.5 5.9 0.216 0.232 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.
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Package mechanical data LExxAB, LExxC Tape & reel for TO-92 mechanical data Dim. A1 T T1 T2 d P0 P2 F1, F2 delta H W W0 W1 W2 H H0 H1 D0 t L1 delta P u Φ1 Φ2 mm. Min. inch. Typ. Max. Min. 4.80 3.80 1.60 2.30 0.48 12.5 5.65 2.44 17.5 5.7 8.5 Typ. Max. 0.189 0.150 0.063 0.091 0.019 2.54 ±2 18.00 0.50 18.50 15.50 12.9 7.05 2.94 0.492 0.222 0.096 19.0 6.3 9.25 0.689 0.224 0.335 0.508 0.278 0.116 0.100 0.079 0.709 0.748 0.248 0.364 0.20 0.728 18.70 16.50 0.610 4.2 0.150 25.00 0.726 0.
PAGE 21
LExxAB, LExxC Revision history 7 Revision history Table 11. Document revision history Date Revision Changes 09-Jul-2004 6 IO typ. and max. are changed in tab. 24 and 25 - pag. 14. 16-Mar-2005 7 Add Tape & Reel for TO-92 - Note on Table 3. 12-Feb-2007 8 Change value TOP on Table 2. 26-Jul-2007 9 Add Table 1 in cover page. 29-Nov-2007 10 Modified: Table 25. 12-Feb-2008 11 Modified: Table 25. 10-Jul-2008 12 Modified: Table 1 and Table 25.
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LExxAB, LExxC Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.