MIC2297-15YML TR Micrel Inc, MIC2297-15YML TR Datasheet - Page 5

• Manufacturer Part Number: MIC2297-15YML TR
• Description: IC,Laser Diode/LED Driver,LLCC,10PIN,PLASTIC
• Manufacturer: Micrel Inc
• Type: Backlight, White LEDr

Specifications of MIC2297-15YML TR

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Frequency: 525kHz ~ 6.75kHz
• Voltage - Supply: 2.5 V ~ 10 V
• Mounting Type: Surface Mount
• Package / Case: 10-MLF®, QFN
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 20mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MIC2297-15YMLTR; MIC2297-15YMLTR

Typical Characteristics (continued)
Micrel
Mach 2008
85
80
75
70
65
60
55
50
45
40
35
35
30
25
20
15
10
0
5
0
0
Efficiency for 10 LEDs
20
5V
vs. LED Current
LED CURRENT (mA)
10
vs. Duty Cycle
DUTY CYCLE (%)
LED Current
V
V
IN
IN
4V
40
= 3.2V
= 4.2V
20
3V
PWM = 20kHz
2V peak PWM
R
60
SENSE
V
L = 15µH
IN
30
2V
80
= 3.6V
100
40
0.22µF, 10V
80
75
70
65
60
55
50
45
40
0
C3
V
Efficiency for 9 LEDs
5
IN
LED CURRENT (mA)
vs. LED Current
= 4.2V
10 15 20 25 30 35
V
C1
1µF, 16V
IN
PWM
5
= 3.2V
V
L = 6.8µH
IN
L1 = Murata LQH32CN100K11
= 3.6V
AGND
VIN
EN
REF
BRT
MIC2297BML
PGND
L1
COMP
OVP
SW
FB
C4
0.1µF, 10V
85
80
75
70
65
60
55
50
45
40
35
0
Efficiency for 9 LEDs
5 10 15 20 25 30 35 40
vs. LED Current
LED CURRENT (mA)
V
V
IN
IN
= 4.2V
= 3.2V
M9999-032708
MIC2297
L = 15µH
V
C2
0.47µF, 50V
IN
= 3.6V