LDK220
200 mA low quiescent current and low noise LDO
Datasheet - production data
Applications
Battery-powered equipment
TV
Set-top box
PC and laptop
Industrial
Description
The LDK220 is a low drop voltage regulator,
which provides a maximum output current of
200 mA from an input voltage in the range of
2.5 V to 13.2 V, with a typical dropout voltage of
100 mV.
Features
Input voltage from 2.5 to 13.2 V
Very low-dropout voltage (100 mV typ. @
100 mA load)
Low quiescent current (typ. 55 µA, 1 µA in
off mode)
Low noise
Output voltage tolerance: ± 2.0% @ 25 °C
200 mA guaranteed output current
Wide range of output voltages available on
request: fixed from 1.2 V to 12 V with
100 mV step and adjustable
Logic-controlled electronic shutdown
Compatible with ceramic capacitor
C
OUT
= 1 µF
Internal current and thermal limit
Available in SOT23-5L, SOT323-5L, SOT-89
and DFN6-1.2x1.3 packages
Temperature range: -40 °C to 125 °C
A ceramic capacitor stabilizes it on the output.
The very low drop voltage, low quiescent current
and low noise make it suitable for battery-
powered applications.
The enable logic control function puts the
LDK220 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.
October 2016
DocID026015 Rev 4
1/28
www.st.com
This is information on a product in full production.
Contents
LDK220
Contents
1
2
3
4
5
6
7
Diagram ............................................................................................ 3
Pin configuration ............................................................................. 4
Typical application .......................................................................... 5
Maximum ratings ............................................................................. 6
Electrical characteristics ................................................................ 7
Typical performance characteristics ........................................... 10
Package information ..................................................................... 15
7.1
7.2
7.3
7.4
7.5
7.6
SOT23-5L package information ...................................................... 15
SOT23-5L packing information........................................................ 17
SOT-89 package information .......................................................... 18
SOT-89 packing information............................................................ 21
SOT323-5L package information .................................................... 22
DFN6 1.2x1.3 package information ................................................. 24
8
9
Ordering information..................................................................... 26
Revision history ............................................................................ 27
2/28
DocID026015 Rev 4
LDK220
Diagram
1
Diagram
Figure 1: Block diagram (fixed version)
Figure 2: Block diagram (adjustable version)
DocID026015 Rev 4
3/28
Pin
configuration
LDK220
2
Pin configuration
Figure 3: Pin connections (top view)
Table 1: Pin description (SOT23-5L, SOT323-5L)
Pin n°
1
2
3
4
5
Symbol
IN
GND
EN
ADJ/NC
OUT
Input voltage of the LDO
Common ground
Enable pin logic input: low = shutdown, high = active
Adjustable pin on ADJ version, not connected on fixed version
Output voltage of the LDO
Function
Table 2: Pin description (DFN6)
Pin n°
1
2
3
4
5
6
Symbol
OUT
N/C
ADJ/NC
EN
GND
IN
Output voltage of the LDO
Not connected
Adjustable pin on ADJ version, not connected in fixed version
Enable pin logic input: low = shutdown, high = active
Common ground
Input voltage of the LDO
Function
Table 3: Pin description (SOT-89)
Pin n°
(1)
1
2
3
Notes:
(1)
Symbol
OUT
GND
IN
Function
Output voltage of the LDO
Common ground
Input voltage of the LDO
Adjustable version and enable pin are not available on the SOT-89 package.
4/28
DocID026015 Rev 4
LDK220
Typical
application
3
Typical application
Figure 4: Typical application circuits
Adjustable version and enable pin are not available on the SOT-89 package.
DocID026015 Rev 4
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