L6728ATR STMicroelectronics, L6728ATR Datasheet - Page 27

• Manufacturer Part Number: L6728ATR
• Description: IC CTLR PWM SGL HI FREQ 10VFQFPN
• Manufacturer: STMicroelectronics

Specifications of L6728ATR

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 660kHz
• Duty Cycle: 67%
• Voltage - Supply: 5 V ~ 12 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 10-DFN
• Frequency-max: 660kHz
• Topology: Buck
• Output Voltage: 0.8 V
• Output Current: 1500 mA
• Switching Frequency: 660 KHz
• Duty Cycle (max): 67 %
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• For Use With: 497-8228 - BOARD EVALUATION W/L6728497-6418 - BOARD EVAL BASED ON L6728
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8324-2

L6728A
Table 8.
Capacitors
Resistors
Inductor
Active Components
Qty
2
1
2
2
2
1
1
3
3
1
2
2
1
1
1
1
1
1
1
5 A demonstration board - bill of material
C12, C51
C10
C14, C38
C39, C40
C36
C24
C35
R1, R2, R17
R3, R5, R16
R14
R6, R9
R8, R13
R7
R19
R18
L1
D1
Q5
U1
Reference
MLCC, 10 μF, 16 V, X5R
Murata GRM31CR61C106K
MLCC, 100 nF, 50 V, X7R
Murata GRM188R71H104K
MLCC, 1 μF, 16 V, X7R
Murata GRM21BR71C105K
MLCC, 22 μF, 6.3 V, X5R
Murata GRM31CR60J226K
MLCC, 10 nF, 50 V, X7R
Murata GRM188R71H103K
MLCC, 47 nF, 50 V, X7R
Murata GRM188R71H223K
MLCC, 1 nF, 50 V, X7R
Murata GRM188R71H102K
Resistor, 3R3, 1/16 W, 1%
Resistor, 0R, 1/8 W, 1%
Resistor, 51R, 1/8 W, 1%
Resistor, 2K2, 1/16 W, 1%
Resistor, 3K9, 1/16 W, 1%
Resistor, 270 R, 1/16 W, 1%
Resistor, 22 K, 1/16 W, 1%
Resistor, 18 K, 1/16 W, 1%
Wurth SMD power inductor
1.8 μH - 3.68 mΩ - 20 A
P/N 744-318-180
Diode, BAT54
Dual N-channel MOS,
STS8DNF3LL (the STS8DNH3LL
model can be used as well)
Controller, L6728A
Description
5A demonstration board
VFQFPN 10
SMD1206
SMD0603
SMD0805
SMD1206
SMD0603
SMD0603
Package
3x3 mm
SOT23
SO8
na
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