LED5000PHR STMicroelectronics, LED5000PHR Datasheet - Page 17
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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
LED5000
5.5
5.6
Figure 9.
As a consequence the LED equivalent circuit gives the
voltage with the high impedance FB input:
Equation 13
Total loop gain
In summary, the open loop gain can be expressed as:
Equation 14
Compensation network design
The maximum bandwidth of the system can be designed up to f
small signal model.
Equation 15
where
calculations are valid in the hypothesis that BW >
P
(
Equation 3
Load equivalent circuit
) is the pole introduced by the power components. The following
G s
VIN
VIN
VIN
VIN
LED
Doc ID 023951 Rev 1
=
-------------
2
n
G
LED
P
CO
D D
D1
D1
=
s
BW BW
------------------------------------------------------------
n
LED
A
0
s
R
r
MAX
LED
SENSE
L L
L L
P
LED
Application notes - buck conversion
+
=
which is the typical condition.
R
COUT
COUT
COUT
COUT
f
-------- -
SW
SENSE
6
LED
n
LED
(s) term correlating the output
SW
Rd1
Rd1
Rd2
Rd2
Dled1
Dled1
Dled2
Dled2
Rs
Rs
Rs
Rs
/6 to guarantee a valid
AM13493v1
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