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LM3699 Arkusz danych(PDF) 5 Page - Texas Instruments

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Numer części LM3699
Szczegółowy opis  High-Efficiency White LED Driver
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
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LM3699 Arkusz danych(HTML) 5 Page - Texas Instruments

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LM3699
www.ti.com
SNVS821A – JANUARY 2014 – REVISED MARCH 2014
6.5 Electrical Characteristics
Limits apply over the full operating ambient temperature range (
−40°C ≤ TA ≤ 85°C) and VIN = 3.6V, unless otherwise
specified.
(1) (2)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
General
2.7 V
≤ VIN ≤ 5.5 V, HWEN = GND
3.0
ISHDN
Shutdown current
µA
2.7 V
≤ VIN ≤ 5.5 V, HWEN = GND,
1
TA = 25°C
Thermal shutdown
140
TSD
°C
Hysteresis
15
Boost Converter
2.7 V
≤ VIN ≤ 5.5 V, ILOW = GND,
IS0 = IS1 = VIN,
18.38
22.02
PWM Duty Cycle = 100%
2.7 V
≤ VIN ≤ 5.5 V, ILOW = GND,
IS0 = IS1 = VIN,
20.2
PWM Duty Cycle = 100%
TA = 25°C
ILOW = GND, IS0 = IS1 = VIN,
PWM Duty Cycle = 100%
18.7
21.58
TA = 25°C
Output current
IHVLED(1/2/3)
regulation (HVLED1,
mA
ILOW = GND, IS0 = IS1 = VIN,
HVLED2, HVLED3)
PWM Duty Cycle = 100%,
20.2
TA = 25°C
3.0 V
≤ VIN ≤ 4.5 V, ILOW = GND,
IS0 = IS1 = VIN,
18.63
21.58
PWM Duty Cycle = 100%
TA = 25°C
3.0 V
≤ VIN ≤ 4.5 V, ILOW = GND,
IS0 = IS1 = VIN,
20.2
PWM Duty Cycle = 100%
TA = 25°C
2.7 V
≤ VIN ≤ 5.5 V, ILOW = GND,
IS0 = IS1 = VIN,
–2.5%
2.5%
PWM Duty Cycle = 100%
HVLED matching
(HVLED1 to HVLED2
ILOW = GND, IS0 = IS1 = VIN,
–2%
1.7%
IMATCH_HV
or HVLED2 to HVLED3
PWM Duty Cycle = 100%, TA =
or HVLED1 to
25°C
HVLED3) (3)
3.0 V
≤ VIN ≤ 4.5 V, ILOW = GND,
IS0 = IS1 = VIN,
–2.5%
2.5%
PWM Duty Cycle = 100%
ILOW = GND, IS0 = IS1 = VIN,
Regulated current sink
VREG_CS
PWM Duty Cycle = 100%,
400
headroom voltage
TA = 25°C
ILED = 95% of nominal, ILOW =
GND, IS0 = IS1 = VIN, PWM Duty
275
mV
Cycle = 100%
Minimum current sink
VHR_MIN
headroom voltage for
ILED = 95% of nominal, ILOW =
HVLED current sinks
GND, IS0 = IS1 = VIN, PWM Duty
190
Cycle = 100%
TA = 25°C
NMOS switch on
RDSON
ISW = 500 mA, TA = 25°C
0.3
resistance
880
1120
NMOS Switch Current
ICL_BOOST
mA
Limit
TA = 25°C
1000
(1)
All voltages are with respect to the potential at the GND terminal.
(2)
Minimum (Min) and Maximum (Max) limits are verified by design, test, or statistical analysis. Typical (Typ) numbers are not verified, but
do represent the most likely norm. Unless otherwise specified, conditions for typical specifications are: VIN = 3.6 V and TA = 25°C.
(3)
LED current sink matching in the high-voltage current sinks (HVLED1, HVLED2, and HVLED3) is given as the maximum matching value
between any two current sinks, where the matching between any two high-voltage current sinks (X and Y) is given as (IHVLEDX (or
IHVLEDY) - IAVE(X-Y))/(IAVE(X-Y)) x 100.
Copyright © 2014, Texas Instruments Incorporated
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