MIC2297-42YML TR Micrel Inc, MIC2297-42YML TR Datasheet - Page 4

• Manufacturer Part Number: MIC2297-42YML TR
• Description: IC LED DRIVR WHITE BCKLGT 10-MLF
• Manufacturer: Micrel Inc
• Type: Backlight, White LEDr

Specifications of MIC2297-42YML 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: -
• Other names: 576-1440-2

Typical Characteristics
Micrel
Mach 2008
1200
1000
300
250
200
150
100
800
600
400
200
5.5
4.5
3.5
1.5
1.4
1.3
1.2
1.1
0.9
0.8
0.7
0.6
0.5
50
6
5
4
3
0
1
0
2
0
2
3
3
vs. Switch Voltage
vs. Input Voltage
SWITCH CURRENT (mA)
vs. Input Voltage
BRT VOLTAGE (mV)
Supply Current
vs. BRT Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Switch Current
4
4
500
BRT Voltage
FB Voltage
5
5
6
6
Not Switching
V
FB
1000
7
7
= 1V
V
10001200
IN
8
8
= 3.6V
9 10
9 10
1500
100
220
215
210
205
200
195
190
300
280
260
240
220
200
180
160
140
120
100
Efficiency for 10 LEDs @ 20mA
99
98
97
96
95
80
78
76
74
72
70
2
2
2
2
I
FSWITCH
3
3
3
3
vs. Input Voltage
vs. Input Voltage
vs. Input Voltage
Max Duty Cycle
vs. Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Switch Voltage
4
4
4
4
FB Voltage
= 0.5A
5
5
5
5
4
6
6
6
6
7
7
7
7
L = 6.8µH
8
8
8
8
9 10
9 10
9 10
9 10
800
700
600
500
400
20
18
16
14
12
10
30
25
20
15
10
80
75
70
65
60
55
50
45
40
5
0
2
2
0
Efficiency for 10 LEDs
3
3
5
V
vs. Input Voltage
vs. Input Voltage
BRT VOLTAGE (mV)
IN
vs. BRT Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
vs. LED Current
LED CURRENT (mA)
4
4
10 15 20 25 30 35
= 4.2V
LED Current
LED Current
Frequency
V
IN
5
5
= 3.6V
6
6
M9999-032708
R
SENSE
7
7
L = 6.8µH
V
MIC2297
10001200
IN
8
8
= 3.2V
9 10
9 10