L6730TR STMicroelectronics, L6730TR Datasheet - Page 20

• Manufacturer Part Number: L6730TR
• Description: IC CTRLR ADJ STEP DOWN 20-TSSOP
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6730TR

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adj to 0.6V
• Frequency - Switching: 100kHz ~ 1MHz
• Voltage - Input: 1.8 ~ 14 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP Exposed Pad, 20-eTSSOP, 20-HTSSOP
• Output Voltage: 0.6 V
• Input Voltage: 1.8 V to 14 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• For Use With: 497-5868 - EVAL BOARD 30A 400KHZ L6730497-5501 - EVAL BOARD FOR L6730XX
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-5098-2

Device description
5.7
20/52
Figure 12. Sink mode disabled: Inductor current during and after soft-start (L6730)
Driver section
The high-side and low-side drivers allow for the use of different types of power MOSFETs
(also multiple MOSFETs to reduce the R
low-side driver is supplied by V
A predictive dead time control avoids MOSFETs cross-conduction maintaining very short
dead time duration (see
The control monitors the phase node in order to sense the low-side body diode recirculation.
If the phase node voltage is less than a certain threshold (–350 mV typ.) during the dead
time, it will be reduced in the next PWM cycle. The predictive dead time control does not
work when the high-side body diode is conducting because the phase node does not go
Figure
Doc ID 11938 Rev 3
CCDR
13.).
while the high-side driver is supplied by the BOOT pin.
DSON
), maintaining fast switching transitions. The
L6730 - L6730B
Vout
Vcc
Vss
I
L