TSM108IDT STMicroelectronics, TSM108IDT Datasheet - Page 12

• Manufacturer Part Number: TSM108IDT
• Description: IC CONTROLLER P-CH MOSFET 14SOIC
• Manufacturer: STMicroelectronics

Specifications of TSM108IDT

• Pwm Type: Voltage/Current Mode
• Number Of Outputs: 1
• Frequency - Max: 130kHz
• Duty Cycle: 100%
• Voltage - Supply: 9 V ~ 32 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Frequency-max: 130kHz
• Duty Cycle (max): 100 %
• Output Current: 80 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 70 KHz to 130 KHz
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Synchronous Pin: No
• Topology: Step Down
• For Use With: 497-8716 - DEMO BOARD BASED ON TSM108497-6264 - BOARD DEMO FOR TSM108
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2333-2

TSM108
12.2. Voltage and Current Control, Efficiency Performances using a PNP bipolar transistor
12/13
80%
70%
60%
50%
40%
30%
20%
10%
0%
7
6
5
4
3
2
0
6.045
6.035
6.025
1
6.05
6.04
6.03
0
0
5
Efficiency & duty cycle versus Iout
Vout & duty cycle versus Iout
0.05
Vout & Efficiency versus Vin
10
0.05
Vin=12V, Vout=6V, Iout=200mA
Vin=12V, Vout=6V, Iout=200mA
PNP transistor Rbase = 220 L=150µH
PNP transistor Rbase = 220 L=150µH
PNP transistor Rbase =220 L=150µH
Vout = 6V, Iout = 200mA
15
0.1
0.1
Iout (A)
Vin (V)
Iout (A)
20
0.15
0.15
25
30
0.2
0.2
35
85%
80%
75%
70%
65%
60%
0.25
0.25
70%
60%
50%
40%
30%
20%
10%
0%
80%
70%
60%
50%
40%
30%
20%
10%
0%