Datasheet

15
1
2
16
15
1
2
16
LED1
LED2
OUT
OUT
SW
SW
GND
GND
IN
ENVM/
TX2
TX1/
TORCH
LEDI/
NTC
SDA
STROBE
SCL
/RESET
LM3554
IN VL
GND VL
OUT
VI/O
STROBE
VI/O
/RESET
GND
VUSB
IN
A2
A1
RTH
LED2
(PWF4)
LED1
(PWF4)
LEDI
R3
ENVM/TX2
VI/O
SDA
GND
SCL
GND
R_SDA
(10 k:)
R_SCL
(10 k:)
R_RESET
(10 k:)
GND
SW
CIN
(10 PF)
L
(2.2 PH)
COUT
(10PF)
TX1/TORCH
VI/O
VIN/VUSB
FLASH
(Button)
R2
(0.1:)
R1
(0.1:)
VB
C4
GND
VBIAS
GND
USBL
USBR
www.ti.com Evaluation Board Schematic and Bill of Materials
5 Evaluation Board Schematic and Bill of Materials
Figure 2. LM3554 Evaluation Board Schematic
Table 7. Bill of Materials
Component Manufacturer Value Part Number Size (mm) Description
L TOKO 2.2 µH FDSE0312-2R2M (3 × 3 × 1.2) I
SAT
= 2.3A (0.2Ω)
COUT, CIN Murata 10 µF GRM188R60J106ME470 0603 (1.6 × 0.8) 6.3V, X5R
LED1, LED2 Lumiled Flash LED LXCL-PWF4 (2.04 × 1.64 × 0.7) 145 lm (1A),
V
F
= 3.6V, @1A
LEDI Stanley Electric or Red LED HKR1105W-TR 1206 (3.2 × 1.6) Indicator LED
equivalent
R1, R2 Panasonic 100 mΩ ERJ-L06KF10CV 0805 (2 × 1.2) 1/8W, 1%
R
TH
Not Populated Thermistor Pad
R_RESET, Vishay 10 kΩ CRCW06031002F 0603 (1.6 × 0.8) Open Drain Pull-up
RSDA, RSCL Resistors
R3 Not Populated Series Resistor for
Thermistor Divider
Flash Button Panasonic EVQP1 Momentary Push-
button for Hardware
Flash
USBL, USBR USB Interface
Board Connector
9
SNVA646B–January 2009–Revised July 2013 AN-1742 LM3554 Evaluation Board
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