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September 2011 Doc ID 022166 Rev 2 1/16

LDCL015XX

LDCL015XX33

150 mA capless ultra low drop linear regulator ICs

Features

■ No input or output capacitor required

■ Input voltage from 1.8 V to 5.5 V

■ Very low drop: 50 mV at 100 mA load

■ ± 2% output voltage accuracy

■ Output voltage tolerance: ± 3%

■ Low noise

■ 150 mA guaranteed output current

■ Available in fixed and adjustable output

voltages, from 0.8 V in 100 mV steps

■ Internal current and thermal limit

■ Operating temperature range: - 40 °C to 125 °C

■ SOT23 5-lead package

Applications

■ Space-sensitive applications

■ Battery-powered equipment

■ Cordless and mobile phones

■ Industrial and medical equipment

■ Portable equipment

Description

The LDCL015 provides 150 mA of maximum

current from an input voltage ranging from 1.8 V

to 5.5 V, with a typical dropout voltage of 50 mV. It

is stable with no input or output capacitor. Low

quiescent current, low noise and capless

operation make it suitable for low power battery-

powered applications and allows the reduction of

board size. Typical power supply rejection ratio is

52 dB at low frequencies, and starts to roll off at

10 kHz. The Enable logic control function puts the

LDCL015 in shutdown mode, reducing the total

current consumption to less than 1 µA. The

device also includes short-circuit constant current

limit and thermal protection. Typical applications

are mobile phones, personal digital assistants

and similar battery-powered systems.

SOT23-5L

Table 1. Device summary

Part numbers Markings Order codes Output voltages

LDCL015XX33 CL33 LDCL015M33R 3.3 V

LDCL015XX CLAD LDCL015MR Adjustable from 0.8

www.st.com

Summary of content (16 pages)

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LDCL015XX LDCL015XX33 150 mA capless ultra low drop linear regulator ICs Features ■ No input or output capacitor required ■ Input voltage from 1.8 V to 5.5 V ■ Very low drop: 50 mV at 100 mA load ■ ± 2% output voltage accuracy ■ Output voltage tolerance: ± 3% ■ Low noise ■ 150 mA guaranteed output current ■ Available in fixed and adjustable output voltages, from 0.
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Contents LDCL015XX, LDCL015XX33 Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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LDCL015XX, LDCL015XX33 1 Block diagram Figure 1.
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Pin configuration LDCL015XX, LDCL015XX33 2 Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description 4/16 Pin n° Symbol 1 VIN 2 GND 3 EN 4 ADJ/NC 5 VOUT Name and function Input voltage Ground Enable pin. The device is in OFF state when this pin is pulled low Feedback pin for adjustable version.
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LDCL015XX, LDCL015XX33 Typical application 3 Typical application Figure 3. Typical application schematic - adjustable version (LDCL015XX) OUT IN COUT CIN R1 LDCL015 EN ADJ GND ON R2 OFF AM09360v1 Figure 4. Typical application schematic - fixed VOUT version (LDCL015XX33) OUT IN COUT CIN LDCL015 EN ON GND OFF AM09361v1 Note: 1 R1 and R2 are calculated according to the following formula: R1 = R2 x (VOUT/VADJ-1). 2 CIN and COUT are optional.
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Maximum ratings LDCL015XX, LDCL015XX33 4 Maximum ratings Table 3. Absolute maximum ratings Symbol Parameter VIN Input supply voltage Value Unit -0.3 to +7 V VOUT Output voltage -0.3 to VIN +0.3 V IOUT Output current Internally limited A Enable and feedback pin voltage -0.3 to +VIN +0.
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LDCL015XX, LDCL015XX33 5 Electrical characteristics Electrical characteristics TJ = 25 °C, VIN = VOUT + 0.5 V; VOUT = 1.6 V; CIN = COUT = 100 nF; IOUT =1 mA; VEN=VIN. Table 5. Electrical characteristics Symbol Parameter VIN Operating input voltage range VOUT (1) Output voltage accuracy Test conditions Min. Max. Unit 1.8 5.5 V TJ=25°C -2.0 2.0 % -40°C
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Typical performance characteristics LDCL015XX, LDCL015XX33 6 Typical performance characteristics Figure 5. Output voltage vs. temperature (VIN = 3.8 V) 0.86 VIN = 3.8 V, IOUT = 1 mA Output voltage vs. temperature (VIN = 2 V) VIN = 2 V, IOUT = 1 mA 0.85 0.84 0.83 0.82 VOUT [V] VOUT [V] 3.44 3.42 3.4 3.38 3.36 3.34 3.32 3.3 3.28 3.26 3.24 3.22 3.2 3.18 3.16 Figure 6. 0.81 0.8 0.79 0.78 0.77 0.76 -50 -25 0 25 50 75 100 125 VOUT@0.8 V 0.75 VOUT = 3.3 V 0.
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LDCL015XX, LDCL015XX33 Typical performance characteristics Figure 11. Dropout voltage vs. temperature Figure 12. SVR vs. frequency (VOUT = 0.8 V) 300 70 VEN = VIN; IOUT = 150 mA 60 55 200 50 SVR [dB] Vdropout [mV] CIN = COUT = 0.1 µF, IOUT = 10 mA 65 250 150 100 45 40 35 30 25 50 20 VOUT = 3.3 V VOUT@0.8 V 15 0 10 -75 -50 -25 0 25 50 75 100 125 150 0.1 1 10 Figure 13. SVR vs. frequency 1000 Figure 14. Noise voltage vs.
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Typical performance characteristics LDCL015XX, LDCL015XX33 Figure 17. Line transient (rising) Figure 18. Line transient (falling) VOUT = 3.3 V VOUT = 3.3 V VEN = VCC = from 3.8 V to 5.5 V; IOUT = 1 mA; CIN = 0.1 µF; COUT = 1 µF VEN = VCC = from 5.5 V to 3.8 V; IOUT = 1 mA; CIN = 0.1 µF; COUT = 1 µF Figure 19. Load transient Figure 20. Load transient VOUT = 3.3 V VOUT = 3.3 V VEN = VIN = 3.8 V; IOUT = from 1 to 150 mA CIN = 0.1 µF NO COUT 10/16 VOUT = 3.3 V VEN = VIN = 3.
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LDCL015XX, LDCL015XX33 Application information 7 Application information 7.1 General operation The main feature of the LDCL015 is its capability to operate with or without input and output capacitors. To achieve this goal, the LDO architecture is based on a robust operational amplifier which has sufficient phase margin over all positions of the output capacitor pole.
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Package mechanical data 8 LDCL015XX, LDCL015XX33 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.
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LDCL015XX, LDCL015XX33 Package mechanical data SOT23-5L mechanical data mm. mils. Dim. Min. Typ. Max. Min. Typ. Max. A 0.90 1.45 35.4 57.1 A1 0.00 0.10 0.0 3.9 A2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 1.50 1.75 59.0 68.8 e 0.95 37.4 H 2.60 3.00 102.3 118.1 L 0.10 0.60 3.9 23.
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Package mechanical data LDCL015XX, LDCL015XX33 Tape & reel SOT23-xL mechanical data mm. inch. Dim. Min. Typ. A Min. Typ. 180 13.0 13.2 Max. 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 14/16 Max. 0.504 0.512 14.4 0.519 0.567 Ao 3.13 3.23 3.33 0.123 0.127 0.131 Bo 3.07 3.17 3.27 0.120 0.124 0.128 Ko 1.27 1.37 1.47 0.050 0.054 0.0.58 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 3.9 4.0 4.1 0.153 0.157 0.
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LDCL015XX, LDCL015XX33 Revision history 9 Revision history Table 6. Document revision history Date Revision 05-Sep-2011 1 First release. 2 Added part number LDCL015XX to document heading and Table 1. Modified document title. Removed Section 8: Other output voltage versions of the LDCL015 available on request.
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LDCL015XX, LDCL015XX33 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.