LED5000PHR STMicroelectronics, LED5000PHR Datasheet - Page 15

• 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
Figure 7.
R
system stability but it can be useful to reduce the noise at the output of the error amplifier.
The transfer function of the error amplifier and its compensation network is:
Equation 8
Where A
The poles of this transfer function are (if C
Equation 9
Equation 10
whereas the zero is defined as:
Equation 11
C
and C
A
0
s
vo
C
=
= G
FB
introduce a pole and a zero in the open loop gain. C
V
Transconductance embedded error amplifier
+
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
s
2
m
· R
R
dV
0
o
+
-
C
0
+
G
E/A
m
C
p
dV
Doc ID 023951 Rev 1
f
P HF
R
F
f
c
P LF
=
Z
COMP
A
------------------------------------------------------------
2
=
C
V0
=
2
----------------------------------------- -
c
+
c
----------------------------------------- -
2
R
s
>> C
0
1
R
+
c
1
R
R
1
s
0
c
1
0
R
+C
C
0
R
C
0
C
C
P
Application notes - buck conversion
c
0
+
c
):
c
C
+
C
c
C
R
p
c
0
R
C
C
R
C
C
C
C
P
C
0
does not significantly affect
+
C
C
C
p
P
P
+
R
c
C
c
+
1
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