L6910 STMicroelectronics, L6910 Datasheet - Page 17

• Manufacturer Part Number: L6910
• Description: IC PWM BUCK BST VM 16SOIC
• Manufacturer: STMicroelectronics

Specifications of L6910

• Pwm Type: Voltage Mode
• Number Of Outputs: 1
• Frequency - Max: 230kHz
• Duty Cycle: 100%
• Voltage - Supply: 5 V ~ 12 V
• Buck: Yes
• Boost: Yes
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 230kHz
• Output Voltage: 4 V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3656-5; 497-4220-5; 497-4220-5

Figure 18. PCB and Components Layouts
7.1 Compact Demo Board Performances
Figures 19, 20 show the measured efficiency versus load current for different values of output voltage. The mea-
sure has been done at 5V and 12V input. Output voltage has been changed modifying the value of R1 in the
demo board as reported in the part list.
Figure 19. Efficiency vs. Output Current
Figure 20. Efficiency vs. Output Current
Component Side
100
100
95
95
90
90
85
85
80
80
75
75
70
70
95
95
90
90
85
85
80
80
75
75
70
70
1
1
1
1
Vin=Vcc=5V
Vin=Vcc=5V
Fsw=200KHz
Fsw=200KHz
Vin=Vcc=12V
Vin=Vcc=12V
Fsw=200KHz
Fsw=200KHz
2
2
2
2
3
3
3
3
Output Current (A)
Output Current (A)
Output Current (A)
Output Current (A)
4
4
4
4
5
5
5
5
6
6
6
6
Solder Side
7
7
Vo=3.3V
Vo=3.3V
Vo=2.5V
Vo=2.5V
Vo=1.8V
Vo=1.8V
Vo=1.2V
Vo=1.2V
Vo=1.5V
Vo=1.5V
Vo=5V
Vo=5V
7
7
Vo=2.5V
Vo=2.5V
Vo=1.8V
Vo=1.8V
Vo=1.2V
Vo=1.2V
Vo=3.3V
Vo=3.3V
Vo=1.5V
Vo=1.5V
8
8
L6910 - L6910A
8
8
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