Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsVoltage RegulatorsLDK120C-R

This is information on a product in full production.

October 2013 DocID023965 Rev 3 1/25

LDK120

200 mA low quiescent current very low noise LDO

Datasheet

production data

Features

• Input voltage from 1.9 to 5.5 V

• Very low dropout voltage (100 mV typ. at 100

mA load)

• Low quiescent current (max. 100 µA, 1 µA in

OFF mode)

• Very low noise

• Output voltage tolerance: ± 2.0% @ 25 °C

• 200 mA guaranteed output current

• Wide range of fixed output voltages available

on request: from 0.8 V to 3.5 V with 100 mV

step

• Adjustable version: from 0.8 V to V

-V

drop

• Logic-controlled electronic shutdown

• Compatible with ceramic capacitor C

OUT

= 1 µF

• Internal current and thermal limit

• Available in SOT23-5L, SOT323-5L and DFN6

(1.2 x 1.3 mm) packages

• Temperature range: -40 °C to 125 °C

Applications

• Mobile phones

• Personal digital assistants (PDAs)

• Cordless phones and similar battery-powered

systems

• Digital still cameras

Description

The LDK120 low drop voltage regulator provides

200 mA of maximum current from an input supply

voltage in the range of 1.9 V to 5.5 V, with a

typical dropout voltage of 100 mV.

It is stabilized with a ceramic capacitor on the

output.

The very low drop voltage, low quiescent current

and low noise features make it suitable for low

power battery-powered applications.

An enable logic control function puts the LDK120

in shutdown mode allowing a total current

consumption lower than 1 µA.

The device also includes a short-circuit constant

current limiting and thermal protection.

627/

627/

')1[PP

www.st.com

Summary of content (25 pages)

PAGE 1
LDK120 200 mA low quiescent current very low noise LDO Datasheet - production data Applications • Mobile phones • Personal digital assistants (PDAs) 627 / ')1 [ PP • Cordless phones and similar battery-powered systems • Digital still cameras Description The LDK120 low drop voltage regulator provides 200 mA of maximum current from an input supply voltage in the range of 1.9 V to 5.5 V, with a typical dropout voltage of 100 mV.
PAGE 2
Contents LDK120 Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . .
PAGE 3
LDK120 1 Diagram Diagram Figure 1.
PAGE 4
Pin configuration 2 LDK120 Pin configuration Figure 2. Pin connection (top view) SOT23-5L, SOT323-5L DFN6 (1.2 x 1.3) Table 1. Pin description (SOT23-5L, SOT323-5L) Pin SOT23/ SOT32 3 DFN6 1 6 IN 2 2 GND 3 4 EN 4 3 BYP(1)/ADJ 5 1 OUT Output voltage of the LDO - 5 N/C Not connected.
PAGE 5
LDK120 3 Typical application Typical application Figure 3. Typical application circuits for fixed version Figure 4.
PAGE 6
Maximum ratings 4 LDK120 Maximum ratings Table 2. Absolute maximum ratings Symbol VIN DC input voltage Value Unit - 0.3 to 7 V VOUT DC output voltage - 0.3 to VI + 0.3 V VEN Enable input voltage - 0.3 to VI + 0.
PAGE 7
LDK120 5 Electrical characteristics Electrical characteristics TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless otherwise specified. Table 4. Electrical characteristics for LDK120 Symbol Parameter VIN Operating input voltage VOUT VOUT accuracy Test conditions Min. Typ. Max. Unit 1.9 5.5 V IOUT=1 mA, TJ=25 °C -2.0 2.0 % IOUT=1 mA, -40 °C
PAGE 8
Electrical characteristics LDK120 TJ = 25 °C, VIN = VOUT(NOM) + 1 V, CIN = COUT = 1 µF, IOUT = 1 mA, VEN = VIN, unless otherwise specified. Table 5. Electrical characteristics for LDK120 Symbol Parameter VIN Operating input voltage VADJ VADJ accuracy Test conditions Min. Typ. 1.9 IOUT=1 mA, TJ=25 °C 784 IOUT=1 mA, -40 °C
PAGE 9
LDK120 6 Typical performance characteristics Typical performance characteristics 0.850 0.840 0.830 0.820 0.810 0.800 0.790 0.780 0.770 0.760 0.750 -50 AM12800v1 VIN = 1.9 V, I OUT = 1 mA VADJ [V] VADJ [ V ] CIN = COUT = 1 µF, VEN to VIN, unless otherwise specified. Figure 5. Output voltage vs. temp. for Figure 6. Output voltage vs. temp. for adjustable (IO = 1 mA) adjustable version (IO = 200 mA) -25 0 25 50 75 Temperature [°C] 100 125 150 3.500 3.400 3.300 3.200 3.100 3.000 2.900 2.800 2.
PAGE 10
Typical performance characteristics LDK120 Figure 11. Load regulation vs. temp. for adjustable version Figure 12. Load regulation vs. temp. for fixed version AM16202v1 0.01 AM16203v1 0.01 V IN = 4 V, I OUT from 1 mA to 200 mA V IN = 1.9 V, I OUT from 1 mA to 200 mA 0.008 Load regulation [%/mA] Load regulation [%/mA] 0.008 0.006 0.004 0.002 0 -50 -25 0 25 50 75 100 125 0.006 0.004 0.002 0 -50 150 -25 0 Temperature [°C] AM16204v1 V IN = 1.9 V, I OUT = 1 mA 0.8 1.600 Low 1.
PAGE 11
LDK120 Typical performance characteristics Figure 17. Quiescent current vs. temp. for fixed Figure 18. Quiescent current vs. temp. for fixed version (IO = 0 mA) version (IO = 200 mA) AM16208v1 100 V IN = 4 V, I OUT = 0 mA V IN = 4 V, I OUT = 200 mA 180 80 Quiescent current [µA] Quiescent current [µA] AM16209v1 200 90 70 60 50 40 30 20 160 140 120 100 80 60 40 20 10 0 -50 -25 0 25 50 75 100 125 0 -50 150 -25 0 25 Temperature [°C] Figure 19. Shutdown current vs.
PAGE 12
Typical performance characteristics LDK120 Figure 23. Output noise vs. frequency (VO = VADJ) Figure 24. Stability region vs. COUT (fixed) AM16214v1 VIN = 1.8 V, IOUT = 10 mA 9 1.2 8 1.0 7 ESR @ 100 kHz [Ω] eN [µV /Sqrt (Hz)] AM16215v1 10 1.4 0.8 0.6 0.4 6 Stability area 5 4 3 2 0.2 1 0 0.0 1000 10000 100000 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 COUT [µF] (nominal value) Frequency [Hz] VIN = VEN = 4 to 5.5 V, IOUT = 10 mA to 0.
PAGE 13
LDK120 Typical performance characteristics Figure 29. Load transient (VOUT = VADJ) Figure 30. Startup transient VOUT = VADJ, VIN = VEN = 3.5 V, IOUT = 1 mA to 200 mA, COUT = 1 µF, tr = tf = 5 µs VOUT = 3 V, VIN = VEN = 0 to 4.2 V, IOUT = 1 mA, CIN = COUT = 1 µF, tr = tf = 5 µs Figure 31. Enable transient (VOUT = VADJ) Figure 32. Enable transient (VOUT = 3 V) VIN = 4 V, VEN = 0 to VIN, IOUT = 200 mA, CIN = COUT = 1 µF, tr = tf = 1 µs VOUT @ 0.8 V, VIN = 1.
PAGE 14
Package mechanical data 7 LDK120 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. Table 6. SOT23-5L mechanical data mm Dim. Min. 14/25 Typ. Max. A 0.90 1.45 A1 0 0.15 A2 0.90 1.30 b 0.30 0.50 c 2.09 0.20 D 2.95 E 1.60 e 0.
PAGE 15
LDK120 Package mechanical data Figure 35. SOT23-5L mechanical drawing BN Figure 36.
PAGE 16
Package mechanical data LDK120 Table 7. DFN6L (1.2 x 1.3 mm) mechanical data mm Dim. 16/25 Min. Typ. Max. A 0.41 0.45 0.50 A1 0.00 0.02 0.05 D - 1.20 - E - 1.30 - e - 0.40 - b 0.15 0.18 0.25 L 0.475 0.525 0.575 L3 0.375 0.425 0.475 aaa - 0.
PAGE 17
LDK120 Package mechanical data Figure 37. DFN6L (1.2 x 1.
PAGE 18
Package mechanical data LDK120 Figure 38.
PAGE 19
LDK120 Package mechanical data Table 8. SOT323-5L mechanical data mm Dim. Min. Typ. Max. A 0.80 1.10 A1 0 0.10 A2 0.80 b 0.15 0.30 c 0.10 0.22 D 1.80 2 2.20 E 1.80 2.10 2.40 E1 1.15 1.25 1.35 0.90 e 0.65 e1 1.30 L 0.26 < 0° DocID023965 Rev 3 0.36 1 0.
PAGE 20
Package mechanical data LDK120 Figure 39.
PAGE 21
LDK120 8 Packaging mechanical data Packaging mechanical data Table 9. SOT23-5L tape and reel mechanical data mm Dim. Min. Typ. A Max. 180 C 12.8 D 20.2 N 60 13.0 T 13.2 14.4 Ao 3.13 3.23 3.33 Bo 3.07 3.17 3.27 Ko 1.27 1.37 1.47 Po 3.9 4.0 4.1 P 3.9 4.0 4.
PAGE 22
Packaging mechanical data LDK120 Table 10. SOT323-xL tape and reel mechanical data mm Dim. Min. Typ. Max. A 175 180 185 C 12.8 13 13.2 D 20.2 N 59.5 60 60.5 T 14.4 Ao 2.25 Bo 3.17 Ko 1.2 Po 3.9 4.0 4.1 P 3.9 4.0 4.2 Figure 40.
PAGE 23
LDK120 9 Order codes Order codes Table 11. Order codes Packages Output voltages SOT323-5L SOT23-5L DFN6L LDK120C-R LDK120M-R LDK120PU-R ADJ LDK120C08R LDK120M08R LDK120PU08R 0.8 V LDK120C10R LDK120M10R LDK120PU10R 1.0 V LDK120C11R LDK120M11R 1.1 V LDK120C12R LDK120M12R 1.2 V LDK120C15R LDK120M15R 1.5 V LDK120C18R LDK120M18R 1.
PAGE 24
Revision history 10 LDK120 Revision history Table 13. Document revision history Date Revision 26-Nov-2012 1 Initial release 31-Jan-2013 2 Added new part number LDK120PU32R Updated Table 11 on page 23 3 RPN LDK120xx changed to LDK120. Updated the Features and the Description in cover page. Cancelled Table1: Device summary. Updated Section 7: Package mechanical data, Table 2: Absolute maximum ratings and Table 11: Order codes. Added Section 8: Packaging mechanical data. Minor text changes.
PAGE 25
LDK120 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.