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ELM915BA Datasheet(PDF) 3 Page - ELM Technology Corporation

Part # ELM915BA
Description  54V 1A switching LED driver
Download  6 Pages
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Manufacturer  ELM-TECH [ELM Technology Corporation]
Direct Link  http://www.elm-tech.com
Logo ELM-TECH - ELM Technology Corporation

ELM915BA Datasheet(HTML) 3 Page - ELM Technology Corporation

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3
Rev.1.1
■Block diagram
6 -
LD/PWM
VDD
2
1
6
3
4
5
GND
CS
SW
RT
OTP/OVP
Toff time
modulation
Regulator
5V
250mV
250
25
0.25 2.5
Vd(mV)
S
R
Q
250mV
5V
Vin
-
+
●
●
-
+
-
+
●
ELM915BA 54V 1A switching LED driver
Parameter
Symbol
Condition
Min.
Typ.
Max. Unit
Input DC supply voltage range
Vdd
DC supply voltage
6
54
V
Shut-down mode
supply current
Iin_SD LD/PWM to GND, Vin=6V
600
μA
VDD under voltage lockout
threshold
UVLO Vdd rising
5.4
V
UVLO hysteresis
ΔUVLO Vdd falling
300
mV
LD/PWM low disable voltage
Vsd
LD/PWM voltage falling
180
mV
LD/PWM linear dimming
voltage range
Vld
0.25
2.50
V
Current sense pull-in
threshold voltage
Vcs-th Vin=6V, Top=25°C
238
250
262
mV
Constant off time(100kΩ)
Toff
Rt=100kΩ, Vin=6V, Vcs=0.4V
0.7
μs
Constant off time(500kΩ)
Toff
Rt=500kΩ, Vin=6V, Vcs=0.4V
3.5
μs
SW switch resistance
Rsw(on) Vin=6V, Vcs=0V
0.5
Ω
Current sense blanking time
Tblank Vld/pwm=Vdd, Vcs=0.4V
300
ns
■Electrical characteristics
Top=25°C
Vin=6V


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