111
Littelfuse, Inc. © 2023
1
Technical resources (Click on below icons to learn more)
Datasheet
Series Page
Problem/Solution
The LQ05021QCS4 is an ultra-efficient, 2 A-rated load switch with integrated slew
rate control. The best-in-class efficiency makes it ideal for IoT, mobile, and
wearable electronics. It supports the industry's lowest quiescent current (I
Q
) and
shutdown current (I
SD
), helping designers reduce parasitic leakage current,
improve system efficiency, and increase battery lifetime. LQ05021QCS4 load
switch device is small, utilizing a chip-scale package with four (4) bumps in a 0.77
mm x 0.77 mm x 0.46 mm die size and a 0.4 mm bump pitch.
Markets/Applications
▪ Mobile devices
▪ Wearables
▪ Low-power subsystems
▪ Internet of Things (IoT)
Load Switch ICs - LQ05021QCS4 Series
5 V, 2 A, Ultra-Low Consumption with Slew Rate Control
Typical Application
Functional Block Diagram
Tech Info
Product
Brief
Features
▪ Low R
ON
: 34 mΩ typ. @ 5.5 V
IN
▪ Ultra-low I
Q
: 1 nA typ. @ 5.5 V
IN
▪ Ultra-low I
SD
: 19 nA typ. @ 5.5 V
IN
▪ I
OUT
Max: 2 A
▪ TControlled V
OUT
rise time: 430 μs @ 3.3 V
IN
▪ Wide input range: 1.1 V to 5.5 V, 6 V
abs
max
▪ 4 bumps in WLCSP
(0.77 mm x 0.77 mm x 0.46 mm)
Benefits
▪ Ultra-low consumption power
▪ Integrated output discharge switch
▪ Powe on slew rate control
▪ Ultra small size solution
222
Littelfuse, Inc. © 2023
2
Technical resources (Click on below icons to learn more)
Datasheet
Series Page
Problem/Solution
The LQ05021RCS4 is an advanced technology, fully integrated load switch
device with True Reverse Current Blocking (TRCB) and slew rate control of the
output voltage. It minimizes reverse current flow if the V
OUT
pin voltage exceeds
the V
IN
voltage. LQ05021RCS4 load switch device is small, utilizing a chip-scale
package with four (4) bumps in a 0.77 mm x 0.77 mm x 0.46 mm die size and a
0.4 mm pitch.
Load Switch ICs - LQ05021RCS4 Series
5 V, 2 A Ultra-Low Consumption with True Reverse Current Blocking
Typical Application
Functional Block Diagram
Product
Brief
Features
▪ Low R
ON
: 37 mΩ typ. @ 5.5 V
IN
▪ Ultra-low I
Q
: 450 nA typ. @ 5.5 V
IN
▪ Ultra-low I
SD
: 20 nA typ. @ 5.5 V
IN
▪ I
OUT
Max: 2 A
▪ Controlled V
OUT
rise time: 570 μs @ 3.3 V
IN
▪ Wide input range: 1.1 V to 5.5 V, 6 Vabs max
▪ 4 bumps in WLCSP
(0.77 mm x 0.77 mm x 0.46 mm)
Benefits
▪ Ultra-low consumption power
▪ Integrated output discharge switch
▪ True reverse current blocking (TRCB)
▪ Ultra small size solution
▪ Powe on slew rate control
Markets/Applications
▪ Mobile Devices
▪ Wearables
▪ Low Power Subsystems
▪ Internet of Things (IoT)
Tech Info