L6591 STMicroelectronics, L6591 Datasheet - Page 4

• Manufacturer Part Number: L6591
• Description: IC CTRLR PWM PROG CM HV 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6591

• Output Isolation: Isolated
• Frequency Range: 168 ~ 192kHz
• Voltage - Input: 8.7 ~ 22 V
• Power (watts): 750mW
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Output Voltage: 5 V
• Input Voltage: 25 V
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 50 %
• For Use With: 497-8335 - BOARD EVAL FOR L6591
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8286

Pin settings
2
2.1
2.2
4/41
Pin settings
Connection
Figure 3.
Functions
Table 1.
Pin N.
1
2
Pin connection (top view)
Pin functions
Name
LINE
DIS
PFC_STOP
Line sensing input. The pin is to be connected to the high-voltage input bus
with a resistor divider. A voltage below 1.25 V shuts down the IC, lowers its
consumption and discharges the soft-start capacitor. IC’s operation is re-
enabled as the voltage exceeds 1.25 V. The comparator is provided with
current hysteresis: an internal 15 µA current generator is ON as long as the
voltage applied at the pin is below 1.25 V and is OFF if this value is
exceeded. Bypass the pin with a capacitor to GND (#11) to reduce noise
pick-up. The pin is intended for either power-on sequencing in systems with
PFC, or brownout protection. Tie to Vcc (#9) with a 220 to 330 kΩ resistor if
the function is not used.
Latched device shutdown. Internally the pin connects a comparator that,
when the voltage on the pin exceeds 4.5 V, shuts the IC down and brings its
consumption to a value barely higher than before start-up. The information
is latched and it is necessary to recycle the input power to restart the IC: the
latch is removed as the voltage on the Vcc pin (#9) goes below the UVLO
threshold. Connect the pin to GND (#11) if the function is not used.
COMP
VREF
ISEN
LINE
OSC
DIS
Doc ID 14821 Rev 5
SS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
Function
9
HVSTART
BOOT
HVG
FGND
N.C.
GND
LVG
Vcc
L6591