LM3554TME/NOPB National Semiconductor, LM3554TME/NOPB Datasheet - Page 12

• 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

www.national.com
Channel 1: V
Channel 4: I
Channel 2: I
Channel 3: STROBE (5V/div)
Time Base: (100µs/div)
Channel 1: V
Channel 4: I
Channel 2: I
Channel 3: TX1 (5V/div)
Time Base: (20µs/div)
LED
L
LED
L
OUT
OUT
(1A/div)
(1A/div)
Torch Mode to Flash Mode Transition
TX1 Interrupt Operation, TX1 Falling
(500mA/div)
(500mA/div)
(5V/div)
(2V/div)
I
I
TORCH
FLASH
= 1.2A, I
= 295mA, I
Single LED
Single LED
TORCH
FLASH
= 180mA
= 1.2A
30042062
30042064
12
Channel 1: V
Channel 4: I
Channel 2: I
Channel 3: TX1 (5V/div)
Time Base: (20µs/div)
Channel 3: V
Channel 4: I
Channel 2: I
Time Base: (400µs/div)
LED
L
LED
L
OUT
IN
(1A/div)
(1A/div)
(LED Mode, Single LED, I
(1V/div)
TX1 Interrupt Operation, TX1 Rising
(500mA/div)
(500mA/div)
(2V/div)
I
FLASH
= 1.2A, I
Line Transient
Single LED
TORCH
= 180mA
FLASH
= 1.2A)
30042063
30042065