LED5000PHR STMicroelectronics, LED5000PHR Datasheet - Page 14
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
5.3
14/51
Equation 2
Equation 3
where:
Equation 4
S
(V
harmonic oscillations at duty cycle over 50%
The sampling effect contribution F
Equation 5
where:
Equation 6
and
Equation 7
Error amplifier compensation network
The external compensation network connected at the output of the error amplifier is
dimensioned to stabilize the system depending on the application conditions.
n
PP
represents the slope of the sensed inductor current, S
peak to peak amplitude) that implements the slope compensation to avoid sub-
P
Doc ID 023951 Rev 1
=
Q
----------------------------------------
R
F
LOAD
P
H
H
S
(s) is:
=
S
s
m
n
e
--------------------------------------------------------------- -
Z
C
=
1
=
=
=
=
V
----------------------------- -
C
n
------------------------------------------ -
1
V
IN
m
OUT
----------------------------------
ESR
1
=
+
pp
C
+
–
-------------------- -
L
V
n
S
------
S
+
OUT
e
n
f
s
1
SW
m
----------------------------------------------- -
1
1
f
1 D
C
Q
SW
L
C
–
OUT
P
+
C
R
s
-----
1 D
OUT
–
CS
2
2
n
0.5
–
e
the slope of the external ramp
–
f
SW
0.5
LED5000