L6599AD STMicroelectronics, L6599AD Datasheet - Page 5
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L6599AD
Manufacturer Part Number
L6599AD
Description
IC RESONANT CONVRTR CTRLR 16SOIC
Manufacturer
STMicroelectronics
Specifications of L6599AD
Applications
Resonant Converter Controller
Voltage - Supply
8.85 V ~ 16 V
Current - Supply
3.5mA
Operating Temperature
0°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Operating Temperature Classification
Automotive
Mounting
Surface Mount
Pin Count
16
Number Of Outputs
Single Output
Topology
Half-Bridge
Output Voltage
1.5 V
Output Current
800 mA
Switching Frequency
500 KHz
Duty Cycle (max)
50 %
Operating Supply Voltage
8.85 V to 16 V
Supply Current
2 mA
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 40 C
Fall Time
30 ns
Mounting Style
SMD/SMT
Output Power
0.83 W
Rise Time
60 ns
Synchronous Pin
No
For Use With
497-10542 - BOARD EVAL BASED ON L6599497-8429 - BOARD ADAPTER L6599/STP12NM50N497-5496 - EVAL BOARD FOR L6599
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L6599AD
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
L6599ADTR
Manufacturer:
U-BLOX
Quantity:
21 000
Part Number:
L6599ADTR
Manufacturer:
ST
Quantity:
20 000
Part Number:
L6599ADTR-2LF
Manufacturer:
ST
Quantity:
20 000
L6599A
3
Pin connection
Figure 2.
Table 2.
Pin N#
1
2
3
Pin connection (top view)
Pin description
DELAY
Type
Css
CF
Soft-start. This pin connects an external capacitor to GND and a resistor to
RFmin (pin 4) that set both the maximum oscillator frequency and the time
constant for the frequency shift that occurs as the chip starts up
(soft-start). An internal switch discharges this capacitor every time the chip
turns off (Vcc < UVLO, LINE < 1.24 V or > 6 V, DIS > 1.85 V, ISEN > 1.5 V,
DELAY > 2 V) to make sure it will be soft-started next, and when the
voltage on the current sense pin (ISEN) exceeds 0.8 V, as long as it stays
above 0.75 V.
Delayed shutdown upon overcurrent. A capacitor and a resistor are
connected from this pin to GND to set the maximum duration of an
overcurrent condition before the IC stops switching and the delay after
which the IC restarts switching. Every time the voltage on the ISEN pin
exceeds 0.8 V the capacitor is charged by an internal 150 µA current
generator and is slowly discharged by the external resistor. If the voltage
on the pin reaches 2 V, the soft start capacitor is completely discharged so
that the switching frequency is pushed to its maximum value and the
150 µA is kept always on. As the voltage on the pin exceeds 3.5 V the IC
stops switching and the internal generator is turned off, so that the voltage
on the pin will decay because of the external resistor. The IC will be soft-
restarted as the voltage drops below 0.3 V. In this way, under short circuit
conditions, the converter will work intermittently with very low input
average power.
Timing capacitor. A capacitor connected from this pin to GND is charged
and discharged by internal current generators programmed by the external
network connected to pin 4 (RFmin) and determines the switching
frequency of the converter.
Doc ID 15308 Rev 4
Function
Pin connection
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