STEVAL-ISA039V1 STMicroelectronics, STEVAL-ISA039V1 Datasheet - Page 9
![BOARD EVAL BASED ON L6727](/photos/9/14/91475/steval-isa039v1_sml.jpg)
STEVAL-ISA039V1
Manufacturer Part Number
STEVAL-ISA039V1
Description
BOARD EVAL BASED ON L6727
Manufacturer
STMicroelectronics
Type
DC/DC Switching Converters, Regulators & Controllersr
Specifications of STEVAL-ISA039V1
Design Resources
STEVAL-ISA039V1 Gerber Files L6727 Eval Board Schematic STEVAL-ISA039V1 Bill of Materials
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
1.25V
Current - Output
5A
Voltage - Input
5 ~ 12V
Regulator Topology
Buck
Frequency - Switching
300kHz
Board Type
Fully Populated
Utilized Ic / Part
L6727
Input Voltage
5 V to 12 V
Output Voltage
1.25 V
Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
L6727
Other names
497-8266
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STEVAL-ISA039V1
Manufacturer:
STMicroelectronics
Quantity:
1
L6727
4
Device description
L6727 is a single-phase PWM controller with embedded high-current drivers that provides
complete control logic and protections to realize in an easy and simple way a general DC-
DC step-down converter. Designed to drive N-channel MOSFETs in a synchronous buck
topology, with its high level of integration this 8-pin device allows reducing cost and size of
the power supply solution.
L6727 is designed to operate from a 5 V or 12 V supply bus. Thanks to the high precision
0.8V internal reference, the output voltage can be precisely regulated to as low as 0.8 V with
±1 % accuracy over line and temperature variations (between 0 °C and +70 °C).
The switching frequency is internally set to 300 kHz.
This device provides a simple control loop with a voltage-mode error-amplifier. The error-
amplifier features a 15 MHz gain-bandwidth product and 8V/µs slew rate, allowing high
regulator bandwidth for fast transient response.
To avoid load damages, L6727 provides over current protection as well as over voltage,
under voltage and feedback disconnection protection. When the device is supplied from 5 V,
over current trip threshold is programmable by a simple resistor. Output current is monitored
across Low-side MOSFET R
resistor. Output voltage and feedback disconnection are monitored through FB pin.
L6727 implements soft-start increasing the internal reference from 0 V to 0.8 V in 5.1 ms
(typ) in closed loop regulation. Low-side-less feature allows the device to perform soft-start
over pre-biased output avoiding high current return through the output inductor and
dangerous negative spike at the load side.
dsON
Doc ID 12933 Rev 4
, saving the use of expensive and space-consuming sense
Device description
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