LED5000PHR STMicroelectronics, LED5000PHR Datasheet - Page 37

• Manufacturer Part Number: LED5000PHR
• Description: Current & Power Monitors & Regulators 3A monolithic Conv 850kHz Synch
• Manufacturer: STMicroelectronics

Specifications of LED5000PHR

• Rohs: yes
• Product: Current Regulators
• Supply Voltage - Max: 48 V
• Supply Voltage - Min: 5.5 V
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Package / Case: HPSO-8
• Accuracy: +/- 3 %
• Input Voltage Range: 5.5 V to 48 V
• Output Current: 23 uA
• Sensing Method: High or Low Side
• Supply Current: 1.7 mA

LED5000
Equation 57
R1 must be dimensioned to limit the D1 rated power so it is an inexpensive small signal
Zener diode.
The overvoltage protection plays an important role for the inverting buck-boost topology. In
fact, in case of open row, the output voltage tends to diverge thus exceeding the input
voltage absolute maximum rate and the device would be damaged (see
overvoltage protection limits V
disconnection.
To design the compensation network for the inverting buck-boost topology please refer to
paragraph
Figure 26. Inverting BB PCB layout (component side)
Figure 27. Inverting BB PCB layout (bottom side)
Chapter 6.4: Compensation network design for alternative topologies
Doc ID 023951 Rev 1
OUT
V
OUT
I
and thereby it protects the device in case of load
ZENER_DIODE
=
V
FB
+
V
Application notes - alternative topologies
=
ZENER_DIODE
-------------------- -
R
S
V
+
FB
R
1
Equation 50
.
AM13510v1
AM13511v1
). The
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