L6731BTR STMicroelectronics, L6731BTR Datasheet - Page 17

• Manufacturer Part Number: L6731BTR
• Description: IC CTRLR ADJ STEP DOWN 16-TSSOP
• Manufacturer: STMicroelectronics

Specifications of L6731BTR

• Applications: Controller, DDR
• Voltage - Input: 1.8 ~ 14 V
• Number Of Outputs: 1
• Voltage - Output: Adjustable down to 0.6V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5099-2

L6731B
5.11
Figure 10. 14V -> 0.3V@500KHz, 5A
Minimum on-time (T
The device can manage minimum on-times lower than 100ns. This feature comes down from
the control topology and from the particular over-current-protection system of the L6731B. In
fact, in a voltage mode controller the current has not to be sensed to perform the regulation
and, in the case of L6731B, neither for the over-current protection, given that during the off-time
the valley-current-protection can operate in every case. The first advantage related to this
feature is the possibility to realize extremely low conversion ratios.
conversion from 14V to 0.3V at 500KHz with a T
The on-time is limited by the turn-on and turn-off times of the MOSFETs.
ON
,
50ns
MIN
)
ON
of about 50ns.
Figure 10.
VPHASE
V
I
OUT
L
shows a
Device description
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