L6730B STMicroelectronics, L6730B Datasheet - Page 21

• Manufacturer Part Number: L6730B
• Description: IC CTRLR ADJ STPDN SYNC 20-TSSOP
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L6730B

• 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
• Package: HTSSOP20
• 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

L6730 - L6730B
5.8
negative. This situation happens when the converter is sinking current for example and, in
this case, an adaptive dead time control operates.
Figure 13. Dead times
Monitoring and protection
The output voltage is monitored by the FB pin. If it is not within ±10% (typ.) of the
programmed value, the Power-Good (PGOOD) output is forced low. The PGOOD signal can
be delayed by adding an external capacitor on PGDelay pin (see
and
calculated with the following formula:
The device provides over voltage protection: when the voltage sensed on FB pin reaches a
value 20% (typ) greater than the reference, the low-side driver is turned on. If the OVP not-
latched mode has been set the low-side MOSFET is kept on as long as the overvoltage is
detected (see
Figure
14.); this can be useful to perform cascade sequencing. The delay can be
Figure
15.).The OVP latched-mode has been set the low-side MOSFET is
Doc ID 11938 Rev 3
PGDelay
= 5 .
0
⋅
C
( )
pF
Table 4: Pin connection
Device description
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