TSM108IDT STMicroelectronics, TSM108IDT Datasheet - Page 11

• 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

12. Measured Performances
The few following curves show the measured per-
formances of TSM108 used in DC/DC step down
12.1. Voltage and Current Control, Efficiency Performances using a Pchannel MOSFET:
5.999
5.998
5.997
5.996
5.995
5.994
5.993
5.992
6.001
Converter efficiency & Switching duty cycle vs Iout
100%
CV & CC Regulation - Switching duty cycle vs Iout
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
6
7
6
5
4
3
2
0
1
5
0
0
0.1
0.1
10
Vout & Efficiency versus Vin
Vin = 12V, Vout = 6V, Iout = 600mA
Vin = 12V, Vout = 6V, Iout = 600mA
Vout = 6V, Iout = 600mA
0.2
0.2
15
0.3
0.3
Iout (A)
Vin (V)
Iout (A)
20
0.4
0.4
converter, either with a Pchannel MOSFET or with
a PNP bipolar transistor.
25
0.5
0.5
0.6
30
0.6
0.7
70%
60%
50%
40%
30%
20%
10%
0%
0.7
35
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
86%
85%
84%
83%
82%
81%
80%
79%
78%
77%
TSM108
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