STEVAL-ILL008V1 STMicroelectronics, STEVAL-ILL008V1 Datasheet - Page 4

• Manufacturer Part Number: STEVAL-ILL008V1
• Description: EVAL BOARD CREE LED FLASHLIGHT
• Manufacturer: STMicroelectronics

Specifications of STEVAL-ILL008V1

• Mfg Application Notes: Low Voltage LED Driver AppNote
• Design Resources: STEVAL-ILL008V1 Gerber Files STEVAL-ILL008V1 Schematic STEVAL-ILL008V1 Bill of Materials
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.5V
• Features: 1V Start up Input Voltage
• Voltage - Input: 1 ~ 5.5 V
• Utilized Ic / Part: L6920
• Product: Display Modules
• Core Chip: L6920DA
• Output Voltage: 3.5V
• Kit Contents: L6920D, L4971, L6902D Reference Board
• Development Tool Type: Hardware - Eval/Demo Board
• Tool / Board Applications: LED Flashlight
• Mcu Supported Families: L6920DA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Details
• Other names: 497-5516

L6920
Figure 3. Efficiency vs. Output Current
Figure 4. Efficiency vs. Output Current
4/13
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.01
0.01
0.1
0.1
LOAD CURRENT [mA]
LOAD CURRENT [mA]
1
1
Vout = 5V
L = 47µH
C = 100µF
f
Vin = 1.2V
10
10
Vin = 1.2V
Vout = 3.3V
L = 47µH
C = 100µF
Vin = 3.6V
Vin = 2.4V
Vin = 2.4V
100
100
1000
1000
Figure 5. Startup Voltage vs Output Current
1.4
1.2
0.8
0.6
0.4
0.2
1
0
30
60
Output current (mA)
90
120
L = 47µH
C = 22µF
150
180