LM3560 Datasheet, PDF (4/42 Pages) Texas Instruments – LM3560 Synchronous Boost Flash Driver w/ Dual 1A High-Side Current Sources (2A Total Flash Current)

Absolute Maximum Ratings (Note 1, Note
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V_IN, V_SW, V_OUT
V_SCL, V_SDA, V_HWEN, V_STROBE, V_TX1,
V_TX2, V_LED1, V_LED2, V_LED1/NTC
Continuous Power Dissipation
(Note 3)
Junction Temperature (T_J-MAX)
Storage Temperature Range
Maximum Lead Temperature
(Soldering)
−0.3V to 6V
−0.3V to the
lesser of (V_IN
+0.3V) or 6.0V
Internally Limited
+150°C
−65°C to +150°C
(Note 4)
Operating Ratings (Note 1, Note 2)
V_IN
Junction Temperature (T_J)
Ambient Temperature (T_A)
(Note 5)
2.5V to 5.5V
−40°C to +125°C
−40°C to +85°C
Thermal Properties
Thermal Junction-to-Ambient
Resistance (θ_JA)
(Note 6)
50.4°C/W
ESD Caution Note:
National Semiconductor recommends that all integrated cir-
cuits be handled with appropriate ESD precautions. Failure to
observe proper ESD handling techniques can result in dam-
age to the device.
Electrical Characteristics (Note 2, Note 7)
Limits in standard typeface are for T_A = +25°C. Limits in boldface type apply over the full operating ambient temperature range
(−40°C ≤ T_A ≤ +85°C). Unless otherwise specified, V_IN = 3.6V, V_HWEN = V_IN.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Current Source Specifications
1000 mA −40°C
Flash
≤ T_A ≤
-5%
Current _+85°C
Setting,
2000
+5%
per
current
T_A =
+25°C
−3.5%
I_LED
Current Source
Accuracy
I_LED1+I_{LED2, VOUT = source}
≤ ≤ 4.5V, 3.0V V_IN 4.2V ^31.25mA
Torch
+3.5%
mA
Current ^{−40°C}
Setting,
per
≤ T_A ≤
+85°C
−10%
62.5
+10%
current
source
V_OUT - V_LED1/2
Current Source
Regulation Voltage
V_OVP
Output Over-Voltage
Protection Trip Point
(Note 9)
I_LED = 2A, (I_LED1 + I_LED2)
V_OUT = 4.5V
ON Threshold
OFF Threshold
4.925
300
mV
5
5.075
V
4.8
Step-Up DC/DC Converter Specifications
R_PMOS
PMOS Switch On-
Resistance
I_PMOS = 1A
80
mΩ
R_NMOS
NMOS Switch On-
Resistance
I_NMOS = 1A
65
mΩ
I_CL
I_{OUT_SC}
Switch Current Limit
(Note 8)
Output Short Circuit
Current Limit
CL bits = 00, 3.0V ≤ V_IN ≤ 4.2V
CL bits = 01, 3.0V ≤ V_IN ≤ 4.2V
CL bits = 10, 3.0V ≤ V_IN ≤ 4.2V
CL bits = 11, 3.0V ≤ V_IN ≤ 4.2V
V_OUT < 2.3V
1.44
1.6
1.76
2.02
2.3
2.58
A
2.64
3.0
3.36
3.17
3.6
4.03
300
mA
Message Indicator Register, bits[2:0] =
I_LED/NTC
Indicator Current
111, 3.0V ≤ V_IN ≤ 4.2V, V_LEDI/NTC = 2V
16
18
20
mA
3
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