L6699D STMicroelectronics, L6699D Datasheet - Page 27

• Manufacturer Part Number: L6699D
• Description: AC/DC Switching Converters Enhanced High Volt Res CTRL 600V
• Manufacturer: STMicroelectronics
• Type: High Voltage Controllersr

Specifications of L6699D

• Product Category: AC/DC Switching Converters
• Output Voltage: 13.3 V
• Input / Supply Voltage (max): 8.85 V
• Input / Supply Voltage (min): 16 V
• Switching Frequency: 235 kHz
• Supply Current: 3 mA
• Operating Temperature Range: - 25 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SO-16
• Number Of Outputs: 1
• Output Current: 800 mA

L6699
Current sensing, OCP and OLP
Figure 20. Soft-start and delayed shutdown upon overcurrent timing diagram (safe-
start details are not shown)
In applications where continuous operation of the converter is needed even under overload
conditions, the delayed shutdown function can be disabled by simply grounding the DELAY
pin.
If the voltage on the ISEN pin reaches 1.5 V, the second comparator is triggered. Switching
is stopped immediately and both the internal switch that discharges C
and the 350 µA
SS
current source on the DELAY pin are forced continuously on. As V(DELAY) equals 3.5 V the
350 µA generator is turned off, so that C
is slowly discharged by R
. The L6699
Delay
Delay
restarts when V(DELAY) falls below 0.3 V.
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