L6728 STMicroelectronics, L6728 Datasheet - Page 27

• Manufacturer Part Number: L6728
• Description: IC PWM CTLR 1PH PWRGOOD 10-DFN
• Manufacturer: STMicroelectronics

Specifications of L6728

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 330kHz
• Duty Cycle: 80%
• Voltage - Supply: 4.5 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: 330kHz
• Output Voltage: 0.8 V
• Output Current: 30 A
• Input Voltage: 1.5 V to 13.2 V
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• For Use With: 497-8228 - BOARD EVALUATION W/L6728497-6418 - BOARD EVAL BASED ON L6728
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L6728
13.1
13.1.1
Table 7.
Board description
Power input (Vin)
This is the input voltage for the power conversion. The high-side drain is connected to this
input. This voltage can range from 1.5 V to 12 V bus.
Capacitors
Resistors
Inductor
Active Components
Qty
2
1
2
1
1
2
1
1
3
3
1
1
2
2
1
1
1
1
1
1
1
5 A demonstration board - bill of material
C12, C51
C10
C14, C38
C39
C30
C23, C36
C24
C35
R1, R2, R17
R3, R5, R16
R4
R14
R6, R9
R8, R13
R7
R19
R18
L1
D1
Q5
U1
Reference
MLCC, 10 μF, 25 V, X5R
Murata GRM31CR61E106KA12
MLCC, 100 nF, 16 V, X7R
MLCC, 1 μF, 16 V, X7R
MLCC, 22 μF, 6.3 V, X5R
Murata GRM31CR60J226ME19L
330 μF, 6.3 V, 9 mΩ
Sanyo 6TPF330M9L
MLCC, 6.8 nF, X7R
MLCC, 68 nF, X7R
MLCC, 220 pF, X7R
Resistor, 3R3, 1/16 W, 1 %
Resistor, 0R, 1/16 W, 1 %
Resistor, 1R8, 1/8 W, 1 %
Resistor, 15R, 1/16 W, 1 %
Resistor, 2K2, 1/16 W, 1 %
Resistor, 3K9, 1/16 W, 1 %
Resistor, 4K7, 1/16 W, 1 %
Resistor, 22K, 1/16 W, 1 %
Resistor, 10K, 1/16 W, 1 %
Inductor, 2.2 μH,
WURTH 744324220LF
Diode, BAT54
STS9D8NH3LL
Controller, L6728
Description
5 A demonstration board
DFN10, 3x3 mm
SMD0603
SMD0603
SMD1206
SMD0603
SMD0805
SMD1206
SMD7343
SMD0603
SMD0603
SMD0805
SMD0603
Package
SOT23
SO8
na
27/31