ACE722G Datasheet PDF - ACE Technology

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ACE722G
ACE Technology

Part Number ACE722G
Description 1.3MHz Synchronous Buck Converter
Page 13 Pages


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ACE722G
5V 2.0A, 1.3MHz Synchronous Buck Converter
Description
The ACE722G is a high-efficiency, DC-to-DC step-down switching regulators, capable of delivering
up to 2A of output current. The device operates from an input voltage range of 2.5V to 6.0V and provides
an output voltage from 0.6V to VIN, making the ACE722G ideal for low voltage power conversions.
Running at a fixed frequency of 1.3MHz allows the use of small external components, such as ceramic
input and output caps, as well as small inductors, while still providing low output ripples. This low noise
output along with its excellent efficiency achieved by the internal synchronous rectifier, making ACE722G
an ideal green replacement for large power consuming linear regulators. Internal soft-start control circuitry
reduces inrush current. Short-circuit and thermal-overload protection improves design reliability. The
ACE722G is available in a SOT23-6 Package
Features
High Efficiency: Up to 97%
Capable of Delivering 2A
1.3MHz Switching Frequency
No External Schottky Diode Needed
Light-load Mode
Internal Compensation and Soft-Start
Current Mode control
0.6V Reference for Low Output voltages
Logic Control Shutdown (IQ<1uA)
Thermal shutdown and UVLO
Available in SOT23-6
Application
Digital Cameras
MP3 and MP4 players
Set top boxes
Wireless and DSL Modems
USB supplied Devices in Notebooks
Portable Devices.
VER 1.1 1



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Absolute Maximum Rating
ACE722G
5V 2.0A, 1.3MHz Synchronous Buck Converter
Parameter
Max Input Voltage
Max Operating Junction Temperature(Tj)
Ambient Temperature(Ta)
Maximum Power Dissipation
SOT-23-6
Storage Temperature(Ts)
Lead Temperature & Time
TAPE & REEL
Value
6V
125°C
-40°C~+85°C
400mW
-40°C~150°C
260°C 10S
3000/REEL
Note1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Recommended Operating
Range indicates conditions for which the device is functional, but do not guarantee specific performance limits. Electrical
Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance
limits. This assumes that the device is within the Operating Range. Specifications are not guaranteed for parameters where no
limit is given, however, the typical value is a good indication of device performance.
Typical Application
Vin 2.5V to 6V
22uF
IN
SW
FB
GND
Vout 1.8V/2A
2.2uH
240K
120K
22uF
SYMBOL
VIN
TOPT
DESCRIPTTION
VIN Supply Voltage
Operating Temperature
Value
2.5 to 6
-40 to +85
Unit
V
°C
VER 1.1 2



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Packaging Type
SOT-23-6
EN
GND
SW
ACE722G
5V 2.0A, 1.3MHz Synchronous Buck Converter
FB
NC
IN
SOT-23-6
1
2
3
4
5
6
Description
EN
GND
SW
IN
NC
FB
Enable pin
Ground
Power Switch Output
Power Supply Input
Not Connected
Feedback input pin
Ordering information
ACE722G XX + H
Halogen - free
Pb - free
GM : SOT-23-6
SIMPLIFIED BLOCK DIAGRAM
Function
VER 1.1 3



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ACE722G
5V 2.0A, 1.3MHz Synchronous Buck Converter
Electrical Characteristics
VDD=5, TA=25
Symbol
Parameter
VIN Input Voltage Range
VFB Feedback Voltage
IFB Feedback Leakage current
IQ Quiescent Current
ISD Shutdown Current
FSW Switching Frequency
RONP
PMOSFET RDSON
RONN
NMOSFET RDSON
ILIMIT Peak Current Limit
ISW SW Leakage Current
IEN
VENH
VENL
TSD
HYSTSD
EN Leakage Current
EN Input High Voltage
EN Input Low Voltage
Thermal Shutdown
Thermal Shutdown Hysteresis
Conditions
Active, VFB=0.65V
Shutdown
VIN=6.0V, VSW=0 or
6.0V, VEN=0V
Min
2.5
0.585
Typ
0.6
0.1
50
1.3
120
80
2.5
Max
6.0
0.615
0.4
1
10
Unit
V
V
uA
uA
uA
MHz
A
uA
1 uA
1.5 V
0.4 V
150 °C
15 °C
VER 1.1 4



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