L6727 STMicroelectronics, L6727 Datasheet - Page 26

IC PWM CTLR SGL PHASE SO-8

L6727

Manufacturer Part Number
L6727
Description
IC PWM CTLR SGL PHASE SO-8
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet

Specifications of L6727

Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
Adj to 0.8V
Frequency - Switching
300kHz
Voltage - Input
1.5 ~ 12 V
Operating Temperature
-20°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Output Current
1.5 A
Input Voltage
- 0.3 V to + 15 V
Switching Frequency
300 KHz
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
SMD/SMT
Duty Cycle (max)
80 %
For Use With
497-8266 - BOARD EVAL BASED ON L6727497-6258 - BOARD EVAL 1PH STPDWN CONV L6727
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

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20 A demonstration board
11.1
11.1.1
11.1.2
11.1.3
11.1.4
11.1.5
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Board description
Power input (VIN)
This is the input voltage for the power conversion. The high-side MOSFET drain is
connected to this input. Supply must be compliant with VIN recommended operating
conditions and capacitors rating.
If VIN voltage is compliant also to VCC range listed in recommended operating conditions, it
can supply also the device through R16 resistor. When VCC > 5 V, R6 need to be removed.
Power output (VOUT)
This is the output voltage of the power conversion. The output voltage is programmed to
1.25 V. It can be changed by replacing R13. R6 allows to adjust OCP threshold when
VCC = 5 V.
IC additional supply (VCC)
The controller can be supplied separately from the power conversion through VCC input. In
this case, to separate VCC from VIN, R16 resistor must be removed. When VCC > 5 V, R6
need to be removed.
Test points
The following test points are provided to allow easy probing of important signals:
Demonstration board efficiency
Figure 15. 20 A demonstration board efficiency
COMP: output of the error amplifier;
FB: inverting input of the error amplifier;
PH: Phase pin of the device;
LG: Low-Side gate pin of the device;
UG: High-Side gate pin of the device.
Doc ID 12933 Rev 4
L6727

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