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Qorvo

ACT4515SH-T Datasheet Preview

ACT4515SH-T Datasheet

Step-Down DC/DC Converter

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FEATURES
40V Input Voltage Surge
Up to 1.5A Constant Output Current
Output Voltage up to 12V
Patent Pending Active CC Constant Current Control
Integrated Current Control Improves Efficiency,
Lowers Cost, and Reduces Component Count
Resistor Programmable Outputs
Current Limit from 400mA to 1500mA
Patented cable compensation from 0Ω to 0.5Ω
±7.5% CC Accuracy
Compensation of Input/ Output Voltage Change
Temperature Compensation
Independent of Inductance and Inductor DCR
2% Feedback Voltage Accuracy
Up to 93% Efficiency
210kHz Switching Frequency Eases EMI Design
Advanced Feature Set
Integrated Soft Start
Thermal Shutdown
Secondary Cycle-by-Cycle Current Limit
Protection Against Shorted ISET Pin
SOP-8 Package
ACT4515
Wide Input Sensorless CC/CV
Step-Down DC/DC Converter
APPLICATIONS
Car Charger
Rechargeable Portable Devices
General-Purpose CC/CV Supply
GENERAL DESCRIPTION
ACT4515 is a wide input voltage, high efficiency Active
CC step-down DC/DC converter that operates in either
CV (Constant Output Voltage) mode or CC (Constant
Output Current) mode. ACT4515 provides up to 1.5A
output current at 210kHz switching frequency.
Active CC is a patent-pending control scheme to
achieve highest accuracy sensorless constant current
control. Active CC eliminates the expensive, high
accuracy current sense resistor, making it ideal for
battery charging applications and high-brightness LED
drive for architectural lighting. The ACT4515 achieves
higher efficiency than traditional constant current
switching regulators by eliminating the sense resistor
and its associated power loss.
Protection features include cycle-by-cycle current limit,
thermal shutdown, and frequency foldback at short
circuit. The devices are available in a SOP-8 package
and require very few external devices for operation.
Data Sheet Rev. 7.0, January 19, 2020 | Subject to change without notice
1 of 17
www.qorvo.com




Qorvo

ACT4515SH-T Datasheet Preview

ACT4515SH-T Datasheet

Step-Down DC/DC Converter

No Preview Available !

ACT4515
Wide Input Sensorless CC/CV
Step-Down DC/DC Converter
ORDERING INFORMATION
PART NUMBER TEMPERATURE RANGE
ACT4515SH-T
-40°C to 85°C
INPUT VOLTAGE
10V to 36V
PACKAGE
SOP-8
PINS
8
PACKING
TAPE & REEL
PIN CONFIGURATION
PIN DESCRIPTIONS
PIN NAME
DESCRIPTION
1
HSB
High Side Bias Pin. This provides power to the internal high-side MOSFET gate driver. Connect a 10nF
capacitor from HSB pin to SW pin.
2
IN
Power Supply Input. Bypass this pin with a 10µF ceramic capacitor to GND, placed as close to the IC as
possible.
3
SW Power Switching Output to External Inductor.
4
GND
Ground. Connect this pin to a large PCB copper area for best heat dissipation. Return FB, COMP, and
ISET to this GND, and connect this GND to power GND at a single point for best noise immunity.
5
FB
Feedback Input. The voltage at this pin is regulated to 0.808V. Connect to the resistor divider between
output and GND to set the output voltage.
6
COMP Error Amplifier Output. This pin is used to compensate the converter.
Enable Input. EN is pulled up to 5V with a 4μA current, and contains a precise 0.8V logic threshold. Drive
7
EN
this pin to a logic-high or leave unconnected to enable the IC. Drive to a logic-low to disable the IC and
enter shutdown mode.
8
ISET Output Current Setting Pin. Connect a resistor from ISET to GND to program the output current.
Data Sheet Rev. 7.0, January 19, 2020 | Subject to change without notice
2 of 17
www.qorvo.com


Part Number ACT4515SH-T
Description Step-Down DC/DC Converter
Maker Qorvo
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