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Semtech

SC21150 Datasheet Preview

SC21150 Datasheet

Tiny 1.2A Synchronous Buck Regulator

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POWER MANAGEMENT
Features
Input voltage range — 2.3V to 5.5V
1.2A continuous output current
4MHz switching frequency
Adjustable Output Voltage
0.8V to VIN
1% output voltage accuracy
Adaptive On-Time architecture
Up to 100% duty cycle
Up to 96% peak efficiency
Power Save mode for efficient light load operation
>90% efficiency 30mA to 75mA
1μA shutdown current
23μA quiescent current
Pre-bias startup protection
Internal or optional external Soft Start
Device options (contact Semtech Marketing)
Automatic output discharge
Power Good indicator
Internal Soft Start
External Programmable Soft Start
Forced PWM Operation Input
0.75mm x 1.11mm, 6-Bump WLCSP Package
WEEE and RoHS compliant and halogen-free
SC21150
Tiny 1.2A Synchronous
Buck Regulator
Description
The SC21150 is an ultra high efficiency 1.2A DC/DC buck
regulator available in a tiny CSP package. These features
make the SC21150 family perfect for small form factor
portable applications where long battery life is essential.
SC21150 is an Adaptive On-Time 4MHz switching regula-
tor at full load conditions. Under light load conditions it
seamlessly transitions into Power Save Mode and reduces
switching frequency thus saving energy. High switching
frequency operation allows the use of a very small 0.47μH
inductor along with small input and output capacitors to
minimize overall circuit size. A Forced PWM input allows
continuous switching under all load conditions.
The SC21150 is highly configurable with a wide range of
factory options including internal Soft Start time, fixed or
adjustable output voltage, automatic output discharge,
and a Forced PWM input.
The SC21150 is offered in an ultra small WLCSP 6-Bump
0.75mm x1.11mm package with a bump pitch of 0.35mm.
The SC21150 operating temperature range is -40C to
+85C.
Applications
Automotive
Smart Phones
Wearable Electronics
Tablet PCs
GPS devices
Battery powered equipment
Portable devices
Typical Application Circuit
Adjustable Output Voltage
2.3V-5.5V Supply
VIN LX
4.7µF SC21150
0.47µH
1.2A
Output
10µF
FPWM
FPWM
FB
EN EN GND
Rev 2.0





Semtech

SC21150 Datasheet Preview

SC21150 Datasheet

Tiny 1.2A Synchronous Buck Regulator

No Preview Available !

SC21150
Pin Configuration
Marking Information
A2 B2 C2
A1 B1 C1
TOP VIEW
0.75x1.11 (m m)
6-Bump W LCSP
XX
TOP VIEW
0.75x1.11
6-B um p
WLCSP
6-Bump WLCSP Marking Diagram
XX = Pin A1 and Marking Code
Bump Assignments 0.75x1.11mm 6-Bump WLCSP
Row/Column
1
2
A GND VIN
B LX FPWM
C FB EN
6-Bump WLCSP Device Code
Part Number
Output
Marking
Code
SC21150ACSTRT
Adj
AZ



Part Number SC21150
Description Tiny 1.2A Synchronous Buck Regulator
Maker Semtech
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SC21150 Datasheet PDF






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