MIC2169BYMM Micrel Inc, MIC2169BYMM Datasheet - Page 10

• Manufacturer Part Number: MIC2169BYMM
• Description: IC CTLR PWM BUCK SYNC 10MSOP
• Manufacturer: Micrel Inc

Specifications of MIC2169BYMM

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 550kHz
• Duty Cycle: 92%
• Voltage - Supply: 3 V ~ 14.5 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Frequency-max: 550kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-3641-5; MIC2169BYMM

The following graphs are used to determine the
maximum gate charge that can be driven with respect to
supply voltage and ambient temperature. Figure 2 shows
the power dissipation in the driver for different values of
gate charge.
Figure
dissipation vs ambient temperature. For a given total
gate
temperature can be found by using the two graphs.
Micrel, Inc.
April 2010
Figure 2. Power Dissipation vs. Total Gate Charge
Figure 3. Maximum Ambient Temperature vs.
charge,
3
shows
140
120
100
80
60
40
20
0
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
0.0
the
0
0.2
Power Dissipation
the
20
MSOP
POWER DISSIPATION (W)
maximum
GATE CHARGE (nC)
0.4
maximum
40
0.6
12Vin
60
0.8
operating
80
1.0
ePAD
MSOP
5Vin
allowable
100
1.2
ambient
power
10
Figures 4 and 5 show the increase in junction and case
temperature for a given power dissipation.
Figure 5. Junction Temperature Rise vs.
Figure 4. Case Temperature Rise vs.
60
50
40
30
20
10
0
120
100
0.0
80
60
40
20
0
0.0
0.2
Power Dissipation
Power Dissipation
0.2
POWER DISSIPATION (W)
POWER DISSIPATION (W)
0.4
0.4
MSOP
MSOP
0.6
0.6
0.8
0.8
ePAD
MSOP
ePAD
MSOP
1.0
1.0
M9999-041210-B
1.2
1.2
MIC2169B