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STLD40D Datasheet(PDF) 5 Page - STMicroelectronics

Part No. STLD40D
Description  White led power supply for large display backlight
Download  14 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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STLD40D Datasheet(HTML) 5 Page - STMicroelectronics

 
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STLD40D
Electrical characteristics
5/14
3
Electrical characteristics
Table 3.
Electrical characteristics
(TJ=-40°C to 85°C, VI=3.6V, VEN=3V, CI=2.2µF, CO=4.7µF, L=4.7µH, RLED=8VO=32V, Typ.
values @ 25°C, unless otherwise specified)
Note: 1 Guaranteed by design
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VI
Input voltage range
3.0
5.5
V
VO
Output voltage range
VI
37
V
IO
Regulated output current
VO = 36V (10 White Leds)
20
mA
ISD
Stand-by current
VEN = Low, VI = 3.6V, TJ = 25°C
13
µA
VEN = Low, VI = 3V to 4.2V
10
IQ
Quiescent current
VI = 3V to 4.2V, TJ = 25°C
0.4
0.8
mA
VI = 5.5V, TJ = 25°C
0.8
1.2
RDSON
Boost switch RDSON
VI = 5.5V, I = 100mA
0.4
VI = 4.2V, I = 100mA
0.4
VI = 3.0V, I = 100mA
0.5
BVDS Breakdown voltage
38
V
ILIM-ADJ
Maximum peak inductor limit
adjust range Note: 1
RSET = 12kΩ to 100kΩ
0.2
1
A
ILIM
Maximum peak inductor limit
when RSET = VI Note: 1
VI = 3V to 5.5V
0.75
1.1
A
VFB
Feedback voltage
VI = 3.6V
130
165
200
mV
Line FB
Line feedback voltage
VI = 3V to 5.5V
535
mV
TON_MAX Maximum ON Time
VI = 4.2V
5.5
µs
TOFF_MIN Minimum OFF Time
VI = 4.2V
250
ns
υ
Efficiency at VI = 3.0VDC Note: 1 IO = 20 mA, VO = 36VDC
75
%
Efficiency at VI = 5.5VDC Note: 1 IO = 20 mA, VO = 36VDC
80
OVP
Overvoltage protection
36
42
V
OVHYS
Overvoltage hysteresis
1.5
V
VEN
Enable input logic low
Disable Low VIL
0.3
V
Enable input logic high
Enable High VIH
1.2


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