LED5000PHR STMicroelectronics, LED5000PHR Datasheet - Page 28
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LED5000PHR
Manufacturer Part Number
LED5000PHR
Description
Current & Power Monitors & Regulators 3A monolithic Conv 850kHz Synch
Manufacturer
STMicroelectronics
Datasheet
1.LED5000PHR.pdf
(51 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LED5000PHR
Manufacturer:
ISSI
Quantity:
1 001
Application notes - buck conversion
28/51
higher than this value to compensate for the losses in the overall application. For this
reason, the conduction losses related to the R
●
Equation 38
Where T
switching losses when driving an inductive load (see
switching time.
Figure 18. Switching losses
●
Equation 39
Example (see
V
The typical output voltage is:
Equation 40
R
IN
DSON_HS
=42 V, V
Switching losses due to turning ON and OFF. These are derived using the following
equation:
Quiescent current losses.
RISE
P
has a typical value of 200
SW
FW_LED
and T
Chapter 5.6
=
V
IN
=3.7 V, n
FALL
I
OUT
represent the switching times of the power element that cause the
V
):
OUT
LED
Doc ID 023951 Rev 1
---------------------------------------- -
T
=8, I
=
RISE
n
LED
LED
+
2
P
T
Q
FALL
at 25 °C.
=1500 mA
V
=
FW_LED
V
IN
DSON
F
SW
I
+
Q
=
V
increase compared to an ideal case.
FB
V
Figure 18
IN
=
29.4V
I
OUT
). T
T
SW
SW_EQ
is the equivalent
F
SW
LED5000
AM13502v1