LM3554TME/NOPB National Semiconductor, LM3554TME/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM3554TME/NOPB
• Description: IC LED DVR PHOTO FLASH 16-USMD
• Manufacturer: National Semiconductor
• Type: Photo Flash LED (I²C Interface)r

Specifications of LM3554TME/NOPB

• Constant Current: Yes
• Topology: High Side, Step-Up (Boost)
• Number Of Outputs: 2
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Type - Secondary: White LED
• Frequency: 2MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 5V
• Mounting Type: Surface Mount
• Package / Case: 16-MicroSMD
• Operating Temperature: -30°C ~ 85°C
• Current - Output / Channel: 600mA
• Internal Switch(s): Yes
• Efficiency: 90%
• Led Driver Application: LED Backlighting, Portable Electronics
• No. Of Outputs: 2
• Output Current: 1.2A
• Input Voltage: 2.7V To 5.5V
• Dimming Control Type: I2C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM3554TMETR

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TX1/TORCH/GPIO1, STROBE, HWEN, ENVM/TX2/GPIO2 Voltage Specifications
I
I
2
2
C-Compatible Voltage Specifications (SCL, SDA)
C-Compatible Timing Specifications (SCL, SDA) — See Figure 1
R
R
Symbol
I
TX1/TORCH
LED/NTC
V
V
I
STROBE
SHDN
V
V
f
1/t
IN_TH
V
V
t
V
V
TRIP
SW
I
TX
t
t
t
t
Q
OL
OL
IH
IH
2
3
4
5
IL
IL
1
Indicator Current
Comparator Trip
Threshold
Switching
Frequency
Quiescent
Supply Current
Shutdown
Supply Current
Flash-to-Torch
LED Current
Settling Time
VIN Monitor Trip
Threshold
Input Logic Low
Input Logic High 2.7V
Output Logic
Low
Internal Pull-
down Resistance
at TX1/TORCH
Internal Pull-
Down
Resistance at
STROBE
Input Logic Low
Input Logic High 2.7V
Output Logic
Low (SCL)
SCL Clock
Frequency
Data In Setup
Time to SCL
High
Data Out Stable
After SCL Low
SDA Low Setup
Time to SCL Low
(Start)
SDA High Hold
Time After SCL
High (Stop)
Parameter
LEDI/NTC bit
= 0
LEDI/NTC bit = 1, 2.7V
5.5V
2.7V
Device Not Switching
2.7V
TX_ Low to High, I
1.2A to 180mA
V
0x01 (Enabled with V
2.7V
I
2.7V
I
LOAD
LOAD
IN
Falling, VIN Monitor Register =
≤
≤
≤
≤
≤
≤
= 3mA, 2.7V
= 3mA, 2.7V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
Conditions
≤
≤
≤
≤
≤
≤
5.5V
5.5V
5.5V
5.5V
5.5V
5.5V
IND1, IND0 bits =
00
IND1, IND0 bits =
01
IND1, IND0 bits =
10
IND1, IND0 bits =
11
LED1
≤
≤
V
V
IN_TH
IN
IN
+ I
≤
≤
≤
V
LED2
= 3.1V)
5.5V
5.5V
IN
≤
4
=
0.947
1.75
2.95
1.22
Min
160
1.2
100
160
0
0
0
1.052
3.09
Typ
630
300
300
400
2.3
4.6
6.9
8.2
3.5
20
2
1.157
Max
2.23
3.23
400
400
0.4
V
0.4
V
6.6
IN
IN
Units
MHz
kHz
mA
mV
mV
µA
µA
kΩ
kΩ
µs
ns
ns
ns
ns
V
V
V
V
V
V